thermal stability of rare earth densified α-sialon ceramics

H.Mandal; D.P.Thompson

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thermal stability of rare earth densified α-sialon ceramics

机译：稀土致密α-赛隆陶瓷的热稳定性

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Typical α-sialon and mixed α-β sialon starting compositions were densified by either hot pressing or pressureless sintering using the oxides of Yb, Dy, Sm and Nd. The resulting materials were heat-treated at 1450 deg.C for up to 720 hours (1 month) to observe α→β sialon transformation. The results of microstructu4ral characteristics and the phase assembly showed that the high temperature stability of α-sialon phase depends on the starting composition, the type of rare earth sintering additives, the amount and viscosity of the liquid phase, and the presence or absence of β-sialon grains in the initial sintered material.

机译：通过使用Yb，Dy，Sm和Nd的氧化物进行热压或无压烧结，使典型的α-赛隆和混合的α-β赛隆起始组合物致密化。将所得材料在1450℃下热处理最多720小时（1个月），以观察α→β赛隆转变。微观结构特征和相组装的结果表明，α-赛隆相的高温稳定性取决于起始成分，稀土烧结添加剂的类型，液相的量和粘度以及β的存在与否。初始烧结材料中的-赛隆晶粒。

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《Key Engineering Materials》 |1997年第2期|p.990-993|共4页
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H.Mandal; D.P.Thompson;
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4. Thermal Stability of Rare Earth Densified alpha-Sialon Ceramics [C] . Hasan Mandal, Derek P. Thompson Conference and exhibition of the European ceramic society;ECerS-V . 1997

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thermal stability of rare earth densified α-sialon ceramics

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