The study of technological peculiarities for improvement of chemical and physico-mechanical properties of reaction-sintered ceramic materials based on molybdenum disilicide

Recommended ways to improve the chemical and physico-mechanical properties of reaction-sintered ceramic materials based on molybdenum disilicide have been described. In order significantly increase operating temperatures change more stringent conditions for products, it is necessary existing methods processing ceramics development new ones. Various means studied analyzed, which include introduction activating additives, hardening with dispersed particles, filamentary crystals fibers application a protective coating prevent rapid oxidation at surface layers. Carrying out partial purification initial starting components from various impurities can some characteristics ceramics. Disilicide has researched significant influence physical mechanical (thermal conductivity, electrical resistance, coefficient thermal expansion strength) disilicides, are introduced into base material both in process its technological production. It established that possible ensure use disilicide-based harsher working be achieved by introducing aluminum, boron, beryllium, iron, yttrium, nickel cobalt powders charge, strengthening titanium coating, includes silicification technology. high presence molten silicon synthesis crystallization dicilicide occur grains layers, as well dissolution recrystallization submicron particles take place certain depth. Based published data analysis conducted research, complex measures improving proposed.