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US09481605B2 Porous mullite bodies having improved thermal stability 有权
具有改善的热稳定性的多孔莫来石体

Porous mullite bodies having improved thermal stability
Abstract:
A porous ceramic composition having improved thermal stability is comprised of ceramic grains bonded together by a grain boundary phase comprised of silica, rare earth element that is Eu, Gd, Nd or mixture thereof and oxygen and optionally yttrium, wherein the grain boundary phase has a amount of an alkali, an alkaline earth metal and a transition metal other than yttrium that is at most 2% by weight of the grain boundary phase.
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