无机材料学报

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AIN-多型体对形成长颗粒α-Sialon的影响

陈卫武; 孙维莹; 严东生   

  1. 中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室, 上海 200050
  • 收稿日期:1999-01-28 修回日期:1999-03-23 出版日期:2000-02-20 网络出版日期:2000-02-20

Effect of AIN-polytypoid on Elongated α-Sialon Formation

CHEN Wei-Wu; SUN Wei-Ying; YAN Dong-Sheng   

  1. State key Lab of High Performance Ceramics and Superfine Microstructure; Shanghai Institute ofCeramics; Chinese Academy of Sciences; Shanghai 200050; China
  • Received:1999-01-28 Revised:1999-03-23 Published:2000-02-20 Online:2000-02-20

摘要: 通过SEM、EDS等方法,研究了添加不同含量AIN-多型体对(Y+Sm)-α-Sialon晶粒形貌的影响.结果表明,随AIN-多型体添加量增多,材料中长颗粒α-Sialon的数量增加.本文对a’-AIN-多型体两相区内长颗粒α-Sialon的形成机理进行了讨论.

关键词: 长颗粒α-Sialon, 形成机理, AIN-多型体

Abstract: The microstructural characteristic of (Y+Sm) α-Sialon with different amount of AINpolytypoid was studied by SEM and EDS. The formation mechanism of elongated α-Sialon inα -AIN-polytypoids dual-phases area was discussed. The results show that with increasing amountof AIN-polytypoid, more α-Sialon grains exhibit the enlongated morphology.

Key words: elongated α-Sialon, formation mechanism, AIN-polytypoid

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