The Peculiarities of Refractory Phases in the System Al-Сr2О3-B2O3
Journal Title: Фізика і хімія твердого тіла - Year 2014, Vol 15, Issue 4
Abstract
In this paper we investigated the temperature and time dependence of Education refractory Al2O3 phases during the synthesis reaction at temperatures of isothermal holding from 1000°C to 1600°C and a duration of 2 to 16 minutes. It is shown that the synthesis reaction of Al-Cr2O3 and Al-B2O3 occurs in several stages and leads to the formation of additional, on fusible phases such as B2O3, chromium metal and aluminum and chromium yntermetalidiv that at a high temperature sintering decay modes to form refractory compounds. Using the reaction mixture Al-Cr2O3 -B2O3 ( energy yield of the reaction is 730 kJ, allowing at temperatures from 1300°C to obtain formulations contain only refractory ceramic phase.
Authors and Affiliations
O. A. Sivak, M. I. Cherednyk, I. M. Totskiy, A. Yu. Popov, V. A. Makara
Keywords
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