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the structure and phase composition of the ceramic-based system zro2–mgo is studied. the dependence between the structural-phase state and the coefficient of thermal expansion of ceramic materials based on solid solutions zro2–mgo is demonstrated. the coefficient of thermal expansion of the system increases proportionally to the increase of the mgo content. the thermal expansion of the zro2–mgo ceramic materials can be described in the framework of the mixture rule taking into account the phase composition of zro2 and the amount of magnesia grains in the matrtix. keywords: zro2–mgo solid solutions, coefficient of thermal expansion, mixture rule Vladimir V. Promakhov, PhD has finished the tomsk state university in 2008. He is got scientific degree ‘’candidate of technical sciences’’ at institute of strength Physics and materials science sB rAs in 2012. theme of his Ph.D. work was “structure and phases in zro2-mgo after thermoloading and its mechanical properties” under guidance Prof. Buyakova. v.v. Promakhov is author or coauthor of 10 articles and 1 russian patent. Prof. Svetlana P. Buyakova Doctor of Sciences from 2008, full Professor from 2013. She is specialist in material sciencesof ceramic and ceramic matrix composites based on oxides and carbides. She is author and co-author more than 100 papers. Three Ph.D. students and one person makes they dissertations under her guidance in 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. Vanda Illavszky is a Bsc student at the materials science and engineering Faculty in university of miskolc (Hungary) and under guidance Prof. Gömze she is participating in the research works which are made under collaboration agreement between tomsk state university (russia) and university of miskolc (Hungary). 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). Prof. László A. Gömze establisher (in july 1st, 1999) and head of Department of ceramics and silicate engineering in the university of miskolc, Hungary. since then 7 students from the department have successfully completed their PhD theses and 4 of them were managed by Prof. Gömze. He is author or coauthor of 2 patents, 5 books and more than 250 scientific papers. recently, he is the chair of the international organization Board of ic-cmtp3 the 3rd international conference on competitive materials and technological Processes (2014) and ic-rmm2the 2nd international conference on rheology and modeling of materials (2015).

Thermal expansion of oxide systems on the basis of ZrO2