SVIBOR - Project code: 1-03-177

MINISTRY OF SCIENCE AND TECHNOLOGY

Strossmayerov trg 4, HR - 10000 ZAGREB
tel.: +385 1 459 44 44, fax: +385 1 459 44 69
E-mail: ured@znanost.hr

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Project code: 1-03-177


PHASE EQUILIBRIA, RELAXATION PROCESSES AND PHASE TRANSITIONS IN SOLIDS


Main researcher: POPOVIĆ, STANKO (38142)


Assistants
Type of research: basic
Duration from: 01/01/91. to 12/31/95.
Papers on project (total): 193
Papers on project quoted in Current Contents: 90
Institution name: Institut "Ruđer Bošković", Zagreb (98)
Department/Institute: Department of Materials Research and Electronics
Address: 10001 Zagreb, Bijenička cesta 54, p.p. 1016
City: 10000 - Zagreb, Croatia
Communication
Phone: 385 (0)1 4561111, 4561120
Fax: 385 (0)1 425497
Summary: Investigation of equilibria in systems of solid phases, relaxation processes and phase transitions in solids. Preparation, crystal structure, microstructure, stability conditions, physical and chemical properties, phase diagrams of novel intermetallics, metallic hydrides, mixed metal oxides, supraconductors, and generally multicomponent inorganic solids. Precipitation phenomena in supersaturated intermetallic solid solutions, solubility limits, equilibrium phase diagrams. Structure and properties of novel metallic and ceramic glasses, crystallization processes, kinetics of crystallite growth. Oxidation/corrosion of metals and metallic alloys. Influence of additives on properties of cements. Relaxation processes, interphase reactions and phase transitions in polymer dielectrics.

Keywords: phase equilibrium, relaxation processes, crystal lattice dynamics, phase transitions and diagrams, crystal lattice strains, corrosion, X-ray diffraction, Mossbauer spectroscopy, thermal analyses, electron microscopy, thermally stimulated depolarization, intermetallic compounds and alloys, intermetallic oxides, metallic hydrides, metallic glasses, supraconductors, dielectrics, electrets, ceramics, minerals

Research goals: Stability of phases and phase equilibria in multicomponent metallic systems, the influence of the component replacement on properties, chemical affinity to hydrogen. Precipitation processes in supersaturated solid solutions of transition metals in aluminium, the solubility limits, phase transitions ending up in the equilibrium state. Structural and thermal stability of metallic glasses, properties, crystallization. High-temperature oxidation of metals and metallic alloys, kinetics and mechanism of reactions, initial formation of oxide films. Multicomponent systems of metallic oxides, the influence of structure and properties of particular oxides on the phase diagram. Structure, properties, phase transitions of novel supraconductors. The influence of structural instabilities on properties of organic conductors. Structural properties of novel glass-ceramic material. Choice of additives which favourably influence the strength development in inorganic cements, optimum conditions for chemical stability and resistivity to temperature change. Relaxation phenomena in polymer dielecrics by use of depolarization thermal analysis, identification and compensation of parasitic current, interpretation of corresponding spectra and analysis of glass-transition. Phase equilibria, stability conditions, thermal properties of novel complex compounds of transition metals.

COOPERATION - PROJECTS


  1. Name of project: JF 106 Microstructure-property relationships in metallic alloys and compounds
    Name of institution: National Institute of Standards and Technology
    City: Boulder, Colorado, U.S.A.

COOPERATION - INSTITUTIONS


  1. Name of institution: Martin-Luther-Universitat Halle-Wittenberg;Fachbereich Physik, Fachgruppe Metalphysik, Halle(Saale), NjemaČka
    Type of institution: University/Faculty
    Type of cooperation: Joint publishing of scientific papers
    City: Halle (Saale), Njemačka

  2. Name of institution: Ceramics Research Laboratory, Nagoya Institute of Technology, Nagoya, Japan
    Type of institution: University/Faculty
    Type of cooperation: Joint publishing of scientific papers
    City: Nagoya, Japan

  3. Name of institution: University of Missoury - Rolla Graduate Center for Materials Research, Rolla, Mo, U.S.A.
    Type of institution: University/Faculty
    Type of cooperation: Joint publishing of scientific papers
    City: Rolla, Mo, U.S.A.

  4. Name of institution: Universite Paris-Sud, Laboratoire de Physique des Solides, Orsay, Francuska
    Type of institution: University/Faculty
    Type of cooperation: Joint publishing of scientific papers
    City: Orsay, Francuska

  5. Name of institution: Centre d'Etudes Nucleaires de Grenoble (CENG), Laboratoire de Cryophysique, Grenoble, Francuska
    Type of institution: University/Faculty
    Type of cooperation: Joint publishing of scientific papers
    City: Grenoble, Francuska

  6. Name of institution: University of Durham, Durham, Velika Britanija
    Type of institution: University/Faculty
    Type of cooperation: Joint publishing of scientific papers
    City: Durham, Velika Britanija

  7. Name of institution: University of Illinois, N.M.Newmark Civil Engineering Laboratory, Urbana, Illinois/ U.S. Department of Transportation, Washington, D.C., U.S.A.
    Type of institution: University/Faculty
    Type of cooperation: Joint publishing of scientific papers
    City: Urbana/Washington, U.S.A.

OTHER ACHIEVEMENTS


  1. Name: Nagrada za najbolji poster na 2nd European Powder Diffraction Conference, Enschede, Nizozemska 1992.
    Type of achievement: Other
    Authors: Gržeta, Biserka

  2. Name: Više desetaka analiza godišnje za privredu i za druge znanstveno, znanstveno-nastavne i zdravstvene ustanove
    Type of achievement: Other
    Authors: Suradnici na projektu
Other information about the project.
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