Structural phase processes in multicomponent metal ceramic oxide materials based on the system Y–Ti–Zr–O (Y 2 O 3 –TiO 2 –ZrO 2 )

Abstract

The article investigates the synthesis processes, structural characteristics and structural-phase processes in multicomponent metal-ceramic oxide materials based on the Y-Ti-ZrO system (Y2O3-TiO2-ZrO2), synthesis of ultra- and nanodisperse oxide powders of the Y-Ti-Zrsystem. O, development and improvement of methods of compaction and consolidation of materials based on them, determination of structural characteristics of oxide materials and the impact of technological processes on these characteristics. The structural-phase evolution in the production of yttrium and titanium oxides, as well as compact ceramics based on them with the structure of pyrochlorine has been studied. Samples of oxide powders were obtained and compact and consolidated ceramics with different content of pyrochlorine phase of Y2Ti2O7 oxides were made, high-temperature influence technology was optimized to increase the content of this phase in ceramic samples. It is recorded that the increase in the term of high-temperature exposure leads to an increase in the content of the pyrochlorine phase