The stress-strain behaviour and creep resistance of sintered ceramics containing free silicon and having structure similar to self-bonded SiC, reaction-bonded ceramics with SiC, hot pressed TiN-containing ceramics and hot-isostatically pressed Si3N4 were studied under varying stresses at temperatures up to 1400 0 C in air, also with sodium sulphate present. Interesting features concerning the high-temperature properties of these materials are discussed.
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