Synthesis and Reinforcement of Heat-Resistant Cordierite-Mullite Ceramic Structure with Introduction of a Fiber Filler

Resumo

The effect of a fiber filler on properties and phase composition of a ceramic based on a corundum-mullite matrix is studied. It is established that use of a steel fiber for reinforcement during preparation of cordierite ceramic is impossible. It is shown that with use of a mullite-silica fiber within the mix composition for cordierite ceramic preparation it is possible to achieve an increase in material mechanical strength by a factor of 1.2 – 2.0; ceramic LTEC at 800°C is 4.1 × 10–^{6 –} 5.0 × 10^–6 K^–1. It is shown that with introduction of mullite-silica fiber into the ceramic composition the relative amounts of cordierite and mullite increase insignificantly.