- Type of paper
: Paper in journal
Title: CONVERSION PROPERTIES OF CHEMICALLY DEPOSITED
CdS-ELECTROLYTE INTERFACES
- Authors:
- Gotovac, Vesna (14016)
- Aljinović, Ljiljana (362)
- Lučić-Lavčević, Magdy (118560)
Journal: ENGINEERING PHYSICS
Number: 1
ISSN: 0354-0162
Volume: 1
Year: 1991
Pages: from 63 to 71
Number of references: 27
Language: engleski
Summary: Photoelectrochemical conversion properties of thin
chemicallydeposited semiconductor CdS film/electrolyte interfaces
withdifferent redox systems have been investigated. Powercharacteristics,
the dependences of Jsc and Uoc on light intesityhave been measured. 1.5%
light to electrical conversionefficiency has been realised with
CdSşFe3+/Fe2+. In particularthe changes of Uoc with electrolyte Fermy level
have beendiscussed.
Keywords: Cadmium sulphide, photoelectrochemical, conversion, interface, semiconducting film, conversion efficiency.
- Type of paper
: Paper in journal
Title: ON THE PHYSICAL PROPERTIES AND PHOTOELECTROCHEMICAL
EXPERIMENTS WITH Cu2O FILMS ON CONDUCTIVE SUBSTRATES
- Authors:
- Gotovac, Vesna (14016)
Journal: SUNČEVA ENERGIJA
Number: 1
ISSN: 0351-2797
Volume: 12
Year: 1991
Pages: from 27 to 33
Number of references: 41
Language: hrvatski
Summary: The purpose of this review is to survey the work done on
Cu2Oduring the seventies up to date, analyse it, outline theunderlaying
problems and needs for further investigations.Various methods of producing
Cu2O, its physical properties, thefabrication of solar cells, the reasons
for their poorperformance are reported. The particular conditions
forgeneration of photocurrents and some unusual phenomena in
thephotoelectrochemical behaviour of thin disordered Cu2O films
arediscussed.
Keywords: Cuprous oxide, electrodeposition, semiconductor, type of conductivity, solar cells, photoelectrochemical.
- Type of paper
: Paper in journal
Title: EFFECT OF ORGANIC ACIDS AND BASES ON CATHODIC CORROSION OF
ALUMINIUM IN CHLORIDE SOLUTIONS
- Authors:
- Radošević, Jagoda (39742)
- Kliškić, Maja (119820)
- Despić, Aleksandar
Journal: JOURNAL OF APPLIED ELECTROCHEMISTRY
Number: 7
ISSN: 0021-891
Volume: 22
Year: 1992
Pages: from 649 to 656
Number of references: 4
Language: engleski
Summary: This paper reports an attempt to obtain insight into the
effectof organic acids and bases on the cathodic processes at Al inchloride
solutions. The corrosion is assumed to be caused by theeffect of OH- ions
formed from water upon cathodic hydrogenevolution. This is known to result
in hydration of the protectiveoxide film and chemical attack on the metal.
Hence, organicsubstances were expected to inhibit the corrosion by
consumingOH- ions as well as by an adsorptive effect. The substancestested
were HAc, HPro, HBut, HNic, TEA, Pyr, 3-Pic, 4-Pic, 3,5Lut, 2,6 Lut, 3,4,6
Col, 4-HP, 2,4 AMP, 2 AP i 3 AP. The besteffect was achieved by TEA, 2,4
AMP i 2 AP.
Keywords: High purity aluminium, cathodic corrosion, organic inhibitors.
- Type of paper
: Paper in journal
Title: THE THIOCARBAMATE AS A CORROSION INHIBITOR FOR Cu Ni10 Fe
ALLOY IN SEAWATER
- Authors:
- Aljinović, Ljiljana (362)
- Radošević, Jagoda (39742)
- Šmith, Mario (149441)
- Kliškić, Maja (119820)
Journal: OEBALIA,International Journal of Marine Biology and
Oceanography
ISSN: 0392-6613
Volume: 19
Year: 1993
Pages: from 567 to 571
Number of references: 7
Language: engleski
Summary: The effect of sodium diethildithiocarbamate (NaDDTC) on
thecorrosion of Cu Ni10 Fe alloy in seawater has been investigatedby means
of linear polarization, potentiostatic polarizationmeasurements and cyclic
voltammetry. In aerated and deaeratedseawater NaDDTC molecules act as an
effective inhibitor. Incontact with this chelating agent a sparingly
soluble complexwith Cu ions has been formed which probably diminishes
theporosity of corrosion product layer and so decreases oxygenreduction
rate.
Keywords: Cunifer, seawater, inhibition, thiocarbamate.
- Type of paper
: Paper in journal
Title: MECHANICAL STRAIN AND STRUCTURAL PHASE TRANSITION IN SMALL
PARTICLES
- Authors:
- Lučić-Lavčević, Magdy (118560)
- Ogorelec, Zvonimir (33971)
Journal: FIZIKA A
Number: 2
ISSN: 1330-0008
Volume: 4
Year: 1995
Number of references: 6
Language: engleski
Summary: Strain energy as a part of the Gibbs free-energy change
during the structural phase transition in small particles has been
analyzed. A special atention has been paid to those transitions
characterized by small latent heats and large volume changes (large strains
in the crystal lattice). Under assumption that the dilatation of the
nucleus of the phase just in formation causes plastic deformation of the
particle, a new expression for the strain energy has been formulated. It
shows that this energy may be greatly reduced if particles are sufficiently
small.
Keywords: Tin, nucleation, phase transition, strain energy, small particles.
- Type of paper
: Paper in proceedings
Title: EFFECT OF ORGANIC ACIDS AND BASES ON CATHODIC CORROSION OF
ALUMINIUM IN CHLORIDE SOLUTIONS
- Authors:
- Kliškić, Maja (119820)
- Radošević, Jagoda (39742)
- Vuko, Senka (181062)
- Despić, Aleksandar
Proceedings title: XII Jug. simpozij o elektrokemiji
Language: hrvatski
Place: Banja Luka, Bosna i Hercegovina
Year: 1991
Pages: from 17 to 18
Meeting: XI Simpozij o teoriji i praksi brodogradnje
Held: from 06/03/91 to 06/08/91
Summary: In this work attempts were made to extend the "potential
window"between anodic and cathodic corrosion of pure aluminium in
NaClsolutions i.e. shift the cathodic side of the "window" innegative
direction by adding some substances to the solutionwhich could act as
inhibitors. Two types of substances weretested: (a) weak acids acting by
buffering OH- ions formed duringcathodic evolution of hydrogen, thus
preventing hydration of theprotective oxide layer and (b) strongly
adsorbing basesinhibiting the process of hydrogen evolution at the surface
ofthe oxide. Both kinds of substances were found to shift thepotential of
fast increase of hydrogen evolution by a few hundredmilivolts.
Keywords: High purity aluminium, cathodic corrosion, inhibitors.
- Type of paper
: Paper in proceedings
Title: THE INFLUENCE OF NaDDTC ON THE CORROSION OF Cu Ni10 Fe
ALLOY IN CONTAMINATED SEAWATER
- Authors:
- Šmith, Mario (149441)
- Gotovac, Vesna (14016)
- Aljinović, Ljiljana (362)
Proceedings title: XII Jug. simpozij o elektrokemiji
Language: hrvatski
Place: Banja Luka, Bosna i Hercegovina
Year: 1991
Pages: from 33 to 34
Meeting: XI Simpozij o teoriji i praksi brodogradnje
Held: from 06/03/91 to 06/08/91
Summary: The time variations of the open circuit potential of the Cu
Ni10Fe electrode protected by NaDDTC in seawater with 186 ppm
activechlorine, or with 0.4 ppm Na2S have been continually observedwith the
aim to investigate the influence of oxygen incooperation with possible
polutants on inhibitive properties ofNaDDTC. By comparing the values of the
reciprocal polarizationresistance as well as cathodic polarization curves
obtained bygalvanodinamic techniques it has been estabilished
thatinhibitive properties of NaDDTC are satisfactorily conserved evenin
contaminated seawater.
Keywords: Cunifer alloy, inhibitor, thiocarbamat.
- Type of paper
: Paper in proceedings
Title: ON THE MECHANISM OF THE ACCELERATED CORROSION OF BRASS IN
CHLORINATED SEAWATER
- Authors:
- Vuko, Senka (181062)
- Šmith, Mario (149441)
- Aljinović, Ljiljana (362)
Proceedings title: XII Jug. simpozij o elektrokemiji
Language: hrvatski
Place: Banja Luka, Bosna i Hercegovina
Year: 1991
Pages: from 31 to 32
Meeting: XI Simpozij o teoriji i praksi brodogradnje
Held: from 06/03/91 to 06/08/91
Summary: The aim of this work was to study the influence of the
activechlorine on the corrosion of brass in chlorinated seawater.
Theexperimental results clearly indicated that at lower NaOClconcentration
(64 ppm) on the brass was formed some type ofprotective layer. With
increase NaOCl concetration (96 ppm, 186ppm) that layer would be broken by
the oxidizable action some ofdisproported product of the OCl- ion. On that
indicated decreasethe Rp values of the brass and its higher corrosion.
Keywords: Active chlorine, brass, seawater.
- Type of paper
: Paper in proceedings
Title: APPLICATION OF ELECTROCHEMICAL METHODS IN EXAMINATION OF
PHYSICAL AND CHEMICAL PROPERTIES OF POLYMERIC COATINGS
- Authors:
- Aljinović, Ljiljana (362)
- Šmith, Mario (149441)
- Vuko, Senka (181062)
- Šmith, Željka
Proceedings title: XI Simpozij teorija i praksa brodogradnje
Language: hrvatski
Place: Dubrovnik
Year: 1994
ISBN/ISSN: 953-96105-4-0
Pages: from 94 to 103
Meeting: XI Simpozij o teoriji i praksi brodogradnje
Held: from 05/19/94 to 05/21/94
Summary: The results obtained by laboratory electrochemical
examinations of paints systems based on epoxy-phenol resin and copolymer
coating with commercial name Coversub 300 by "Sinit" from Italy in this
paper was discussing. For the epoxy-phenol system the following
examinations have been carrying out: time depedence of open circuit
potential, the polarization curves and the polarization resistance was
record and potentials of galvanic cell model with brass as cathode was also
obtain. The polarization resistance of Coversub 300 was determine by
AC-impedance technique. The results obtained indicate on impossibility
application of paints bassed on epoxy-phenol resins for the protection of
constructions exposed a long time in the sea water, while Coversub 300
shows good protective characteristics.
Keywords: Epoxy-phenol resins, copolymer coatings, electrochemical technique, corrosion in seawater.
- Type of paper
: Paper in proceedings
Title: THE INHIBITIVE ACTION OF SOME PYRIDINE DERIVATIVES ON
ALUMINIUM CORROSION IN CHLORIDE SOLUTIONS
- Authors:
- Radošević, Jagoda (39742)
- Kliškić, Maja (119820)
- Aljinović, Ljiljana (362)
- Vuko, Senka (181062)
Proceedings title: Proceedings of the VIII European Symposium on Corrosion Inhibitors
Language: engleski
Place: Ferrara, ITALY
Year: 1995
Pages: from 817 to 826
Meeting: Surface Science and Electrochemistry
Held: from 09/18/95 to 09/22/95
Summary: Polarization techniques were used to examine the action of
selected pyridine derivatives as corrosion inhibitors for high-purity
aluminium in a 2M NaCl solution. The polarization curves obtained indicate
that the compounds act as inhibitors. Variations in protection efficiency
are evident for different additives when electron density of the centre of
adsorption increases or decreases. The compounds examined obey the
Langmuire adsorption isotherm.
Keywords: High-purity aluminium, inhibition, pyridine derivatives.
- Type of paper
: Paper in proceedings
Title: EXAMINATION OF EFFICIENCY OF CERIUM PASSIVATION COATINGS
ON AN Al ALLOY
- Authors:
- Šmith, Mario (149441)
- Aljinović, Ljiljana (362)
- Radošević, Jagoda (39742)
Proceedings title: Proceedings of the VIII European Symposium on Corrosion Inhibitors
Language: engleski
Place: Ferrara, ITALY
Year: 1995
Pages: from 851 to 860
Meeting: VIII European Symposium on Corrosion Inhibitors
Held: from 09/18/95 to 09/22/95
Summary: Efficiency of cerium salts as possible alternatives to
chromates for the inhibition of corrosion on the Al alloy used in food
processing industry has been examined. Total immersion tests and
electrochemical examinations have been used to determine inhibitor
efficiences and possible inhibition mechanisms. It has been found that
cerium chloride might be an efficient substitute for toxic chromates.
However, the problems of adhesion to that substrate call for further
examination aimed at adaptation of the method on application of conversion
and polymeric protective coatings.
Keywords: Cerium chloride, chromates, total immersion tests.
- Type of paper
: Paper in proceedings
Title: RESEARCHES IN THE FIELD OF CORROSION PREVENTION AND
REASONABLE MANAGEMENT IN THE MEDITERRANEAN
- Authors:
- Aljinović, Ljiljana (362)
- Radošević, Jagoda (39742)
- Šmith, Mario (149441)
- Kliškić, Maja (119820)
Proceedings title: Mediteranski koncept razvojne strategije hrvatske
Language: hrvatski
Place: Split
Year: 1994
ISBN/ISSN: 0354-0251
Pages: from 579 to 584
Meeting: Mediteranski koncept razvojne strategije Hrvatske
Held: from 12/08/93 to 12/09/93
Summary: Damages provoked by corrosion and other destructive agents
in the industry and maritime affairs are one of the main factors that
restrain business efficiency and competitiveness. The ecological problems
in coastal zones that occurred as the consequence of application of
different corrosion-prevention methods are pointed out. The experiences of
Mediterranean countries in the improvement of protection procedures and
finding out more resistant materials suitable for construction in the
region are presented as well. The reasonable exploitation and protection of
equipment necessarily rely on the scientific and research activities, as
well as on the investments in development of research centres. They should
contribute to the transfer of modern technologies and therefore to the
faster development of the Republic of Croatia.
Keywords: Corrosion in seawater, protection of construction, echology.
- Type of paper
: Paper in proceedings
Title: PHOTOELECTROCHEMICAL CELLS AS ALTERNATIVE ENERGY SOURCES
- Authors:
- Gotovac, Vesna (14016)
- Krpan-Lisica, Draga (23911)
- Šmith, Mario (149441)
Proceedings title: Energija i zaštita okoliša
Language: hrvatski
Place: Opatija
Year: 1994
ISBN/ISSN: 953-96054-1-5
Pages: from 327 to 334
Meeting: Međunarodni kongres Energija i zaštita okoliša
Held: from 10/26/94 to 10/28/94
Summary: In this work we present the basical principles of the
photoelectrochemical solar cells operation. The experimental results of our
investigations of the behaviour of the electrochemical photovoltaic cells
with CdS and cuprous(I)oxide thin films are also given. Some problems,
advantages and perspectives in this way of using solar energy are briefly
discussed.
Keywords: Photoelectrochemical solar cells, cadmium(II)sulfide, cuprous(I)oxide.
- Type of paper
: Summary in proceedings
Title: ELECTROCATALYTIC EFFECT OF LANTANIDES FOR HYDROGEN
EVOLUTION ON NOBLE METAL SUBSTRATES
- Authors:
- Radošević, Jagoda (39742)
- Aljinović, Ljiljana (362)
- Jakšić, Milan
Proceedings title: 42nd ISE Meeting Abstracts
Language: engleski
Place: Montreux, Švicarska
Year: 1991
Pages: from 7048 to 7048
Meeting: 42nd Annual Meeting of the International Society of Electrochemistry
Held: from 08/25/91 to 08/30/91
Summary: Various individual lanthanides and actinides have been
applied byboth "in situ" activation during the electrolytic process and
byapart deposition and/or codeposition with other transition metalsin a
hypo-hiper-d or -f electronic pairs combinations to increasethe
electrocatalytic effect and achive the synergism for hydrogenevolution upon
various substrates including noble metals. Thecorrelation between
electrocatalytic activity and paramagneticsusceptibility of individual
lanthanides for hydrogen evolutionhas been clearly established. It has been
pointed out on thefact, that rather small activating amounts provide
remarkableelectrocatalytic effect, what is important in
practicalapplication.
Keywords: Electrocatalyse, lanthanide, catalytic coatings.
- Type of paper
: Summary in proceedings
Title: ON THE MECHANISM OF THE INHIBITIVE ACTION OF
Na-DIETHYLDITHIOCARBAMATE
- Authors:
- Aljinović, Ljiljana (362)
- Šmith, Mario (149441)
- Žmikić, Anka (55584)
Proceedings title: XII Sastanak kemičara Hrvatske
Language: hrvatski
Place: Zagreb
Year: 1991
Pages: from 245 to 245
Meeting: XII Sastanak kemičara Hrvatske
Held: from 02/11/91 to 02/13/91
Summary: The inhibitive properties of Na-diethyldithiocarbamate
(NaDDTC)for Cu Ni10 Fe alloy corrosion in seawater have been investigatedby
means of electrochemical methods and surface analyticaltechnique (AES). The
presence of all elements from organicmolecule on the alloy surface has been
estabilished afterpolarization in agresive media. Besides, the influence of
NaDDTCon the shape and pozition of polarization curves has
beenestabilished. The various reaction posibilities of -DDTC anion aswell
as its parts of decomposition after polarization have beendiscussed.
Keywords: Inhibitor, cunifer alloy, thiocarbamate.
- Type of paper
: Summary in proceedings
Title: PYRIDINE DERIVATIVES AS INHIBITORS OF THE CATHODIC
CORROSION OF ALUMINIUM IN CHLORIDE SOLUTIONS
- Authors:
- Radošević, Jagoda (39742)
- Kliškić, Maja (119820)
- Despić, Aleksandar
Proceedings title: XII Sastanak kemičara Hrvatske
Language: hrvatski
Place: Zagreb
Year: 1991
Pages: from 247 to 247
Meeting: XII Sastanak kemičara Hrvatske
Held: from 02/11/91 to 02/13/91
Summary: The great number methylpyridine and acethylpyridine
derivativeswere tested to see if the methyl- or acethyl- groups in
differentpositions have an influence on inhibition properties of
pyridinemolecule during the cathodic corrosion of aluminium.
Keywords: High purity aluminium, cathodic corrosion, inhibition, pyridine derivatives.
- Type of paper
: Summary in proceedings
Title: ON THE PHYSICAL AND PHOTOELECTROCHEMICAL PROPERTIES OF
Cu2O FILMS
- Authors:
- Krpan-Lisica, Draga (23911)
- Gotovac, Vesna (14016)
- Lučić-Lavčević, Magdy (118560)
Proceedings title: XII Jug. simpozij fizike kondezirane materije
Language: hrvatski
Place: Skopje, Makedonija
Year: 1991
Pages: from 23 to 23
Meeting: XII Jugoslavenski simpozij fizike kondezirane materije
Held: from 09/23/91 to 09/25/91
Summary: On the basis of experimental data of the temperature
depndence ofdc conductivity, photoconductivity and thermoelectric power,
andalso of the frequency depedence of ac conductivity, the energymodel of
thin disordered cuprous oxide films is given. In thatframe the conductivity
mechanisms are discussed. Electrochemicalbehaviour of Cu2O and its
conversion properties are investigatedas well.
Keywords: Cuprous oxide, conductivity, photoconductivity, thermoelectric power, conversion.
- Type of paper
: Summary in proceedings
Title: ELECTROCHEMICAL BEHAVIOUR OF Al-Sn ALLOYS ON THE NEGATIVE
SIDE OF THE OPEN-CIRCUIT POTENTIAL
- Authors:
- Kliškić, Maja (119820)
- Radošević, Jagoda (39742)
- Vuko, Senka (181062)
Proceedings title: 44th ISE Meeting abstracts
Language: engleski
Place: Berlin, Njemačka
Year: 1993
Pages: from 647 to 647
Meeting: 44th Annual Meetin of the International Society of Electrochemistry
Held: from 09/05/93 to 09/10/93
Summary: Cathodic current-time transients were recorded on Al-Sn
alloys(0.02% and 0.4%) in a neutral 2M NaCl, when subjected to apotential
pulse from OCP to different negative values.Experiments have shown that the
small amounts of Sn (0.02%) haveno influence on the hydration potential of
aluminium. Anodiccurrent responses to the return of the potential to the
restvalues were also recorded. The presence of some substances formedduring
the cathodic polarization was detected.
Keywords: Al-Sn alloy, cathodic polarization.
- Type of paper
: Summary in proceedings
Title: IMPEDANCE MEASUREMENTS OF THE BARRIER LAYERS ON ALUMINIUM
AND Al-Sn ALLOY
- Authors:
- Vuko, Senka (181062)
- Radošević, Jagoda (39742)
- Kliškić, Maja (119820)
- Gotovac, Vesna (14016)
Proceedings title: XIII Skup hrvatskih kemičara
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 239 to 239
Meeting: XIII Skup Hrvatskih kemičara
Held: from 02/08/93 to 02/10/93
Summary: The aim of this work was to study electronic properties
undopedand Sn-doped aluminia barrier films. Oxide films on hight purityAl
(5N) and Al-Sn alloy (0.4% Sn) were formed anodicaly inborate buffer.
Electrochemical impedance spectroscopy (EIS) hasbeen used for study
alloy/oxide film/electrolyte interface inorder to obtain valuable
information on the semiconductingproperties of oxide films.
Keywords: High purity aluminium, Al-Sn alloy, barrier film.
- Type of paper
: Summary in proceedings
Title: CORROSION BEHAVIOUR OF Al-2.5Mg ALLOY IN THE SOLUTION OF
NaCl AND LACTIC ACID
- Authors:
- Aljinović, Ljiljana (362)
- Šmith, Mario (149441)
- Periš, Nenad
Proceedings title: XIII Skup hrvatskih kemičara
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 353 to 353
Meeting: XIII Skup Hrvatskih kemičara
Held: from 02/08/93 to 02/10/93
Summary: Corrosion behaviour of Al-2.5Mg alloy, often used for
fishcontainers, has been examined at elevated temperatures. The
timevariations of the electrode open circuit potential and the timechanges
of the electrolyte pH during 30 days at 37 řC has beencontinually observed.
The atomic apsorption spectroscopy analysishas given evidence for the
presence of aluminium species in theused electrolytes and the polarization
measurements havesupported this result. At elevated temperatures changes
insurface tension have also been observed which could ingluencebubbling and
protective properties of polymer films and promotealuminium corrosion.
Keywords: Al-Mg alloy, polarization resistance.
- Type of paper
: Summary in proceedings
Title: STRUCTURAL PHASE TRANSITION IN SMALL Sn-PARTICLES
- Authors:
- Ogorelec, Zvonimir (33971)
- Bonefačić, Antun
- Popović, Stanko
- Tonejc, Anton
- Lučić-Lavčević, Magdy (118560)
Proceedings title: Second Croatian-Slovenian Crystallographic Meeting, abstracts book
Language: engleski
Place: Zagreb
Year: 1993
Pages: from 46 to 46
Meeting: 2nd Croatian-Slovenian Crystallographic Meeting
Held: from 09/30/93 to 10/01/93
Summary: A new expression for strain energy is formulated for the
case ofnucleation of gray tin in white tin particles, characterized by
alarge increase in volume. It is shown that in small particlesstrain energy
has small values and does not prevent thenucleation. X-ray diffraction
analysis of the samples of smallSn-particles showed the absence of the
phase transition. Thisresult suggests that the influence of interfacial
energy onnucleation and phase transition in tin predominates the
influenceof strain energy.
Keywords: Tin, nucleation, phase transition, strain energy, interfacial energy, small particles.
- Type of paper
: Summary in proceedings
Title: SEAWATER CORROSION AND SELECTION OF METHODS FOR CORROSION
EXAMINATION
- Authors:
- Aljinović, Ljiljana (362)
- Šmith, Mario (149441)
- Radošević, Jagoda (39742)
- Gotovac, Vesna (14016)
Proceedings title: Od uzorka do podataka i informacije, Zbornik sažetaka radova
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 40 to 41
Meeting: Od uzorka do podatka i informacije
Held: from 10/20/93 to 10/23/93
Summary: Materials in seawater corrode as a result of the presence
ofdifferent biological and chemical substances, and also because ofthe
influence of many mutually dependent physical and mechanicalfactors. The
examination is planned with the task to selectproper materials and most
effective methods of protection. Theseinvestigations are done in the
laboratory conditions, on somemodels and on defined specimens, exposed to
natural conditions.In conclusion the advantages and limitations of the
appliedelectrochemical methods, especially in the interpretation ofresults
obtained by specific experimental techniques in thiscomplex system, are
pointed out.
Keywords: Electrochemical technique, biological corrosion, chemical corrosion.
- Type of paper
: Summary in proceedings
Title: INVESTIGATIONS OF CORROSION PROTECTION AND RATIONAL
MANAGEMENT IN MEDITERANIAN AREA
- Authors:
- Aljinović, Ljiljana (362)
- Radošević, Jagoda (39742)
- Šmith, Mario (149441)
- Kliškić, Maja (119820)
Proceedings title: Mediteranski koncept razvojne strategije Hrvatske, sažeci radova
Language: hrvatski
Place: Split
Year: 1993
Pages: from 31 to 32
Meeting: Mediteranski koncept razvojne strategije Hrvatske
Held: from 12/08/93 to 12/09/93
Summary: The cost of the corrosion and protection can be estimated
tobillions of dollars. In this paper some of dangerous effects ofcorrosion
in seawater material application are described. Inaddition, the
environmental problems arising from the applicationof various protection
activities are pointed out. Forthe purpose of the rational uses and
protection of materialsthere is a need for the scientific investigation in
real naturalconditions and cooperation of various scientific institutions
onthe coastal area.
Keywords: Corrosion, protection, corrosion agents.
- Type of paper
: Summary in proceedings
Title: THE THYOCARBAMATE AS A CORROSION INHIBITOR FOR Cu Ni10 Fe
ALLOY IN SEAWATER
- Authors:
- Aljinović, Ljiljana (362)
- Radošević, Jagoda (39742)
- Šmith, Mario (149441)
- Kliškić, Maja (119820)
Proceedings title: 8th International Congress on Marine Corrosion and Fouling, abstract book
Language: engleski
Place: Taranto, Italija
Year: 1992
Pages: from 116 to 117
Meeting: 8th International Congress on Marine Corrosion and Fouling
Held: from 09/21/92 to 09/25/92
Summary: As part of a programme of evaluation of various organic
compoundsas corrosion inhibitors to Cu Ni10 Fe alloy, the present
studydetermines the effectiveness of sodium diethyldithiocarbamate(NaDDTC),
which contains two active centers able to formcoordinate bonds with metal
cations. The results obtained bymeans of polarization resistance technique,
cyclic voltammetryand potentiostatic pulse methods confirm that NaDDTC has
a goodinhibitive properties for this alloy in seawater. The
protectionproperties may be atributed to the adsorption of the molecule
onthe metal surface. Although during polarization the thyocarbamatemolecule
may be split, its remained part at the alloy surfaceretains protective
properties.
Keywords: Cunifer alloy, adsorption, thiocarbamat, polarization resistance.
- Type of paper
: Summary in proceedings
Title: AN INVESTIGATION OF THE ELECTROCHEMICAL AND
PHOTOELECTROCHEMICAL PROPERTIES OF THE CUPROUS OXIDE/LIQUID PHASE BOUNDARY
- Authors:
- Šmith, Mario (149441)
- Gotovac, Vesna (14016)
- Aljinović, Ljiljana (362)
- Lučić-Lavčević, Magdy (118560)
Proceedings title: Surface Science and Electrochemistry
Language: engleski
Place: San Benedetto del Tronto, Italy
Year: 1994
Pages: from 80 to 81
Meeting: Surface Science and Electrochemistry
Held: from 09/12/94 to 09/16/94
Summary: The composition of galvanostaticaly deposited films is pure
cuprous(I)oxide. In these disordered n-type films the "Hopping"
conductivity prevails. Thermoelectric and conductivity measurements support
such conclusions. The analysis of the photoelectrochemical behaviour of the
cuprous(I)oxide/electrolyte phase boundary is very difficult. The reasons
are: photodegradation, incoplete light absorption and recombination of
photogenerated carriers. The performance of the electrochemical
photovoltaic cell with cuprous(I)oxide electrode is given and discussed.
Keywords: Semiconducting films, cuprous(I)oxide, photovoltaic conversion.
- Type of paper
: Summary in proceedings
Title: ELECTROCHEMICAL PROPERTIES OF Al-Sn ALLOYS IN SODIUM
CHLORIDE SOLUTION
- Authors:
- Kliškić, Maja (119820)
- Radošević, Jagoda (39742)
- Vuko, Senka (181062)
Proceedings title: XIV Skup hrvatskih kemičara
Language: hrvatski
Place: Zagreb
Year: 1995
Pages: from 332 to 332
Meeting: XIV Skup hrvatskih kemičara
Held: from 02/06/95 to 02/08/95
Summary: Great deal of attention has been recently paid to a number
of Al alloys in which aluminium is electrochemically active, e.g. with In,
Ga, Sn, etc. Use of aluminium as an active anodic material ha been
restricted due to a very resistant oxide film formed on its surface. So far
it has not been examined how the properties of this oxide film depend on
the previous cathodic polarization. This work has analyzed the behaviour of
the Al-Sn alloy at cathodic polarization up to high negative values of the
potential.
Keywords: Al-Sn alloy, oxide film, cathodic polarization.
- Type of paper
: Summary in proceedings
Title: THE POSSIBILITY OF ALTERNATIVES TO CHROMATE INHIBITORS FOR
THE PROTECTION OF Al ALLOYS
- Authors:
- Aljinović, Ljiljana (362)
- Šmith, Mario (149441)
- Vuko, Senka (181062)
Proceedings title: XIV Skup hrvatskih kemičara
Language: hrvatski
Place: Zagreb
Year: 1995
Pages: from 188 to 188
Meeting: XIV Skup hrvatskih kemičara
Held: from 02/06/95 to 02/08/95
Summary: In solutions containing chloride ions, corrosion in Al
alloys takes place as a local attack in most cases. Chromate compounds have
been proven to be efficient inhibitors of such corrosion, but, once their
cancerogenic properties have been discovered, efforts are being made to
replace them by less dangerous substances. This work has proven that
various salts of cerium, nicotine acids, and alcoholic extract of propolis
have inhibitor properties and can replace chromates successfully.
Keywords: Al-alloy, inhibitors, chromate compounds.
- Type of paper
: Summary in proceedings
Title: AN IMPEDANCE SPECTROSCOPY STUDY OF BARRIER LAYERS ON
ALUMINIUM AND ITS ALLOYS
- Authors:
- Vuko, Senka (181062)
- Radošević, Jagoda (39742)
- Kliškić, Maja (119820)
Proceedings title: 45th Annual Meeting of the International Society of Electrochemistry
Language: engleski
Place: Porto, PORTUGAL
Year: 1994
Pages: from 43 to 43
Meeting: 45th Annual Meeting of the International Society of Electrochemistry
Held: from 08/28/94 to 09/02/94
Summary: The properties of undoped and doped Al barrier films with
small quantities of Sn has been examined. Anodic oxide film on Al grows
linearly with increasing anodic potential. Presence of Sn stabilizes the
oxide film. Namely, increasing of Sn content in alloy increase the values
of oxide film resistance and thickness.
Keywords: High-purity aluminium, Al-Sn alloy, barrier film.
- Type of paper
: Summary in proceedings
Title: THE INFLUENCE OF BACTERIA ON THE CORROSION BEHAVIOUR OF
CuNi10Fe ALLOY IN SEAWATER
- Authors:
- Šmith, Mario (149441)
- Aljinović, Ljiljana (362)
- Gotovac, Vesna (14016)
Proceedings title: 45th Annual Meeting of the International Society of Electrochemistry
Language: engleski
Place: Porto, PORTUGAL
Year: 1994
Pages: from 37 to 37
Meeting: 45th Annual Meeting of the International Society of Electrochemistry
Held: from 08/28/94 to 09/02/94
Summary: The results obtained from the time variation of open
circuit potential as well as from the polarization curves, Rp and cyclic
voltammograms suggest that Pseudomonas sp. primarlly affecton the cathodic
processes. Besides in some circumstances, these bacteria and/or their
metabolic products may act as corrosion inhibitors. They influence on the
dissolution of copper is markedly pronounced, as was established using AAS.
The aim of this work is an attempt to obtain more informations on the
influence of bacteria Sp. Pseudomonas on the corrosion potential evolution
for the CuNi10Fe alloy in seawater. The contaminated medium was prepared by
suspending bacteria, cultured on saline nutrient agar, in artificial
seawater.
Keywords: Pseudomonas Sp., corrosion in seawater, CuNi10Fe alloy.
- Type of paper
: Ph.D.
Title: THE STUDY OF CATHODIC BEHAVIOUR OF Al-Sn ALLOY IN AQUEOUS
SOLUTIONS
Faculty: TEHNOLOŠKI FAKULTET SPLIT
Author: KLIŠKIĆ MAJA
Date of defense: 10/28/94
Language: hrvatski
Number of pages: 104
Summary: The influence of addition of small quantities of tin to
high-purity Al (5N) on its electrochemical behaviour was investigated.
Cathodic current-time transients were recorded on Al-Sn alloys (0.02%,
0.09%, 0.2% and 0.4% Sn) in neutral 2M NaCl solution, when subjected to a
potential pulse from a potential around the open circuit potential to
different negative values. The charges required for oxidation of the
substances created during the cathodic process are discussed. In the aim of
identification of the alloy after cathodic polarization SEM micrographs and
EDAX analysis of samples were made.
Keywords: Cathodic polarization, Al-Sn alloy, high-purity aluminium.
- Type of paper
: M.A.
Title: INVESTIGATION OF CATHODIC BEHAVIOUR OF ALUMINIUM IN
AQUEOUS SOLUTIONS
Faculty: TEHNOLOŠKI FAKULTET SPLIT
Author: KLIŠKIĆ MAJA
Date of defense: 05/08/91
Language: hrvatski
Number of pages: 111
Summary: Cathodic current-time transients were recorded on high
purityaluminium immersed into a neutral 2M NaCl solution when subjectedto a
potential pulse from a potential around the open circuitpotential, to
different negative values. The presence of somesubstances, other than
gaseous hydrogen, was detected and theirdeppendence on potential and
cathodic pulse duration isdiscussed. The yield of hydrogen formed during
cathodicpolarization was measured volumetrically as a function of
currentdensity and temperature. Attempts were made to extend thepotential
region between anodic and cathodic corrosion of Al i.e.shift the cathodic
side of that region in negative direction byadding some substances which
could act as inhibitors.
Keywords: High purity aluminium, cathodic polarization, organic inhibitors.
- Type of paper
: M.A.
Title: THE STUDY OF THE ELECTRICAL AND PHOTOELECTROCHEMICAL
PROPERTIES OF THIN CUPROUS OXIDE FILMS
Faculty: FAKULTET KEMIJSKOG INŽENJERSTVA I TEHNOLOGIJE ZAGREB
Author: ŠMITH MARIO
Date of defense: 07/15/91
Language: hrvatski
Number of pages: 110
Summary: In this work the galvanostatic deposition of thin Cu2O
films ondifferent substrates (stainless steel, copper, SnOx on glass)
attemperature of 60 řC and at different current densities isdescribed. The
estimated film thickness varies between 3 and 5um. The dependences of
conductivity on temperature and lightintesity are examined and the
conductivity activation energy iscalculated. Open circuit voltage and short
circuit currentdensity are determined from the experimentally obtained
powercharacteristics of a photoelectrochemical cell. From theseresults Cu2O
conversion efficiency is also calculated. Theresults of investigations of
the electrochemical behaviour ofCu2O films by potentiodynamic and cyclic
voltammetry methods arepresented.
Keywords: Cuprous oxide, galvanostatic deposition, conductivity, photoconductivity, electrochemical photovoltaic cell, conversion efficiency.
- Type of paper
: M.A.
Title: STRUCTURAL PHASE TRANSITION IN SMALL Sn-PARTICLES
Faculty: PRIRODOSLOVNO-MATEMATIČKI FAKULTET ZAGREB
Author: LUČIĆ-LAVČEVIĆ MAGDY
Date of defense: 07/05/93
Language: hrvatski
Number of pages: 82
Summary: A new expression for strain energy is formulated for the
case ofnucleation of gray tin in white tin particles, characterized bya
large increase in volume. It is shown that in small particlesstrain energy
has small values and does not prevent homogeneousnucleation. This result as
well as the absence of phasetransition in samples of small Sn-particles are
basis for theestimation of completely unknown value of interfacial energy
andits influence on nucleation and phase transition in tin.
Keywords: Tin, nucleation, phase transition, strain energy, interfacial energy, small particles.
- Type of paper
: M.A.
Title: STUDY OF BARRIER FILMS ON HIGH PURITY ALUMINIUM
Faculty: FAKULTET KEMIJSKOG INŽENJERSTVA I TEHNOLOGIJE ZAGREB
Author: VUKO SENKA
Date of defense: 02/24/95
Language: hrvatski
Number of pages: 108
Summary: The effect of passivation potntial and the pH of the
solution on the properties of barrier films formed on high-purity Al (5N)
has been examined. The current-time responses were recorded and charge used
up during formation of the barrier film was determined. Imedance
measurments provided an insight into the characteristic sizes of barrier
films. The resistance and the thickness of the film were shown to increase
linearly with the increase in the potential, while the increase in solution
pH caused a marked decrease in the total system impedance. Current
efficiency of 25% indicates the formation of barrier films on Al to be
process which take place at great current losses. The mechanism of the
oxide growth has been examined within the framework of two "point-deffect"
models.
Keywords: High-purity aluminium, barrier film, current efficiency.
- Type of paper
: Mentorship
Title: INVESTIGATION OF CATHODIC BEHAVIOUR OF ALUMINIUM IN
AQUEOUS SOLUTIONS
Faculty: TEHNOLOŠKI FAKULTET SPLIT
Mentor: RADOŠEVIĆ JAGODA
Date of defense: 05/08/91
Number of pages: 111
Author: Kliškić Mr Maja
Degree level: M.A.
- Type of paper
: Mentorship
Title: STUDY OF THE ELECTRICAL AND PHOTOELECTROCHEMICAL
PROPERTIES OF THIN CUPROUS OXIDE FILMS
Faculty: TEHNOLOŠKI FAKULTET SPLIT
Mentor: ADLER NEVENKA
Date of defense: 07/15/91
Number of pages: 110
Author: Šmith Mr Mario
Degree level: M.A.
- Type of paper
: Mentorship
Title: STRUCTUAL PHASE TRANSITION IN SMALL Sn-PARTICLES
Faculty: PRIRODOSLOVNO-MATEMATIČKI FAKULTET ZAGREB
Date of defense: 07/05/93
Number of pages: 82
Author: Lučić-Lavčević magistar Magdy
Degree level: M.A.
- Type of paper
: Mentorship
Title: THE STUDY OF CATHODIC BEHAVIOUR OF Al-Sn ALLOY IN AQUEOUS
SOLUTIONS
Faculty: TEHNOLOŠKI FAKULTET SPLIT
Mentor: RADOŠEVIĆ JAGODA
Date of defense: 10/28/94
Number of pages: 104
Author: Kliškić Mr Maja
Degree level: Ph.D.
- Type of paper
: Mentorship
Title: STUDY OF BARRIER FILMS ON HIGH PURITY ALUMINIUM
Faculty: TEHNOLOŠKI FAKULTET SPLIT
Mentor: RADOŠEVIĆ JAGODA
Date of defense: 02/24/95
Number of pages: 108
Author: Vuko dipl.inž. Senka
Degree level: M.A.
- Type of paper
: Manuscript
Title: ELECTROCHEMICAL PROPERTIES OF Al-Sn ALLOYS IN NEUTRAL
SODIUM CHLORIDE SOLUTION
- Authors:
- Kliškić, Maja (119820)
- Radošević, Jagoda (39742)
- Vuko, Senka (181062)
Language: engleski
Summary: In order to determine appropriate aditions to aluminium for
it to become activated, the possibility of activation by tin was
investigated. The results were obtaind with two Al-Sn alloys (with 0.02%
and 0.4% Sn) which had been prepared on super-pure Al base (5N). It has
been observed that a low tin content causes aluminium to behave
hyperactively at high negative potential values, which leads to crevice
formation. The result of the change of potential in the negative direction
with the alloy containing 0.4% Sn is superactivation aluminium as
consequence of formation a separate tin phase in the aluminium
microstructure.
Keywords: Al-Sn alloy, hyperactivation, superactivation.
Other: Rad je zaprimljen u "Journal of Applied Electrochemistry",
ISSN 0021-891X.
- Type of paper
: Manuscript
Title: IMPEDANCE AND TRANSIENT STUDY OF ALUMINIUM BARRIER TYPE
OXIDE FILMS
- Authors:
- Vuko, Senka (181062)
- Radošević, Jagoda (39742)
- Kliškić, Maja (119820)
Language: engleski
Summary: The aim of this work is to study the kinetic of oxide
growth and properties of relatively thin barrier films on high purity
aluminium in neutral and alkaline borate buffer solutions. This was done by
following the decay of the anodic current with time and by measuring the
impedance of Al/barrier film/electrolyte system. The resistance and
thicness of the barrier film increase linearly with increase in the
passivation potential. The current efficiency for film growth is only 25%.
The results were correlated with two point-defect models.
Keywords: High-purity aluminium, current efficiency, point-defect model.
Other: Rukopis je poslan u "Journal of Applyed Electrochemistry",
ISSN 0021-891X.
