POROSITY AND MECHANICAL PROPERTIES OF ZIRCONIUM CERAMICS

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POROSITY AND MECHANICAL PROPERTIES OF ZIRCONIUM CERAMICS

Porous ceramics have been studied obtained from ultra-fine zro2 powders. the porosity of ceramic samples was from 15 to 80%. the structure of the ceramic materials was a cellular structure. A distinctive feature of all the deformation diagrams obtained in the experiment was their nonlinearity at low deformations which was described by the parabolic law. it was shown that the observed nonlinear elasticity for low deformations on deformation diagrams is due to mechanical instability of the cellular elements in the ceramic carcass. keywords: zirconium oxide ceramics; plasma chemistry method; porosity; particle size distribution; mechanical properties Dr. Ekaterina S. KALATUR Dr. kalatur graduated at the tomsk state university in 2010. she has got scientific degree ‘’candidate of technical sciences’’ at institute of strength Physics and materials science sB rAs in 2013. topic of her Ph.D. work was “influence of porosity on structural phase state, deformation and fracture of porous ceramics” under guidance of Prof. Buyakova. Dr.kalatur is author or coauthor of 25 articles and 1 russian patent. Prof. Svetlana P. Buyakova Doctor of sciences from 2008, full Professor from 2013. she is specialist in material sciences of ceramic and ceramic matrix composites based on oxides and carbides. she is author and coauthor of more than 100 papers.

Four persons (three Ph.D. students) finished their dissertations under her guidance in the period 2010-2013. now, she is chief scientist in is Pms rAs and professor in tomsk state university and tomsk Polytechnic university. Her teaching experience: introduction to materials science, Fundamentals of materials engineering, materials and their applications. Prof. Sergey N. Kulkov Prof. kulkov is head of Department of ceramics in the institute of strength Physics and materials science of the russian Academy of science since 1989. He has got scientific degrees „Doctor of Physics and mathematical sciences” in 1990. since 1992 he’s working as professor both in tomsk state university and in tomsk Polytechnic university. in 1997 he had a soros Professor grant. His research works are represented in 5 books, more than 150 articles, 18 patents and many international symposiums and conferences.

At present he is head of department „theory of strength and mechanic of solids”, member of „the American ceramic society” of „the APmi international” and the Dym At society (France). Dr. Irene Gotman After receiving her doctorate, Dr. Gotman spent three years as a Fulbright Post-doctoral Fellow at Drexel university, Philadelphia. in 1995, she returned to the Department of materials seicnce & engineering at technion as a Levi eshkol Post-doctoral Fellow.

From 2001, Dr. Gotman is a senior research and teaching Fellow. she is a member of european society for Biomaterials (esB). she is also active in the field of reactive synthesis and was awarded, in 2007, a Diploma and a jubilee medal for contribution to r&D by scientific center of russian Academy of sciences and international Association of self-Propagating High-temperature synthesis (World Academy of ceramics). Dr. István Kocserha Finishing his msc study as a mechanical engineer Dr. kocserha has continued his studies as Ph.D. student under supervision of Prof. Dr. László A. Gömze at the Department of ceramic and silicate engineering (Dcse) in university of miskolc (Hungary) in 1999. the scope of his PhD thesis was “the effects of additives on the extrusion of brick clay compounds”. since 1999 he was involved into 68 research projects in the Dcse which were financed by different multinational companies or government. Dr. kocserha is author or coauthor of 32 articles and 1 Hungarian patent. At present he works at the Department of ceramic and silicate engineering in university of miskolc as assistant professor.

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