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共沉淀法制备YAG-Al2O3纳米复合粉体

李炜群; 高濂; 王宏志; 归林华   

  1. 中国科学院上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室, 上海 200050
  • 收稿日期:1999-03-25 修回日期:1999-04-16 出版日期:2000-02-20 网络出版日期:2000-02-20

Synthesis of YAG-Al2O3 Nanocomposite Powders by Co-Precipitation Methods

LI Wei-Qun; GAO Lian; WANG Hong-Zhi; GUI Lin-Hua   

  1. State Key Lab of Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China
  • Received:1999-03-25 Revised:1999-04-16 Published:2000-02-20 Online:2000-02-20

摘要: 本文采用共沉淀法制备了YAG-Al纳米复合粉体.并通过XRD、TEM详细研究了粉体组成、形貌随煅烧温度的变化.研究表明,在1300℃下煅烧可获得YAG粒径约100nm、分散均匀、无杂相的YAG-Al纳米复合粉体.粉体在1450℃可热压烧结致密,远低于文献报道的热压烧结温度1600℃.用共沉淀法制备YAG-Al纳米复合粉体具有成本低、产量高和工艺简单的优点.

关键词: YAG-A12O3, 纳米复合粉体, 共沉淀

Abstract: YAG-Al2O3 nanocomposite powders were prepared by the co-precipitation process. The crystallize temperature and morphology of the composite powder
was intensively studied with XRD and TEM. The results indicate that above 1300℃, there is only YAG and α-Al2O3 phases existed.
YAG particles with an average size of 100 nm can be observed uniformly dispersed in α-Al2O3. Using prepared powders, nearly fully dense sintering
body can be fabricated by hot-pressing at 1450℃. The sintering temperature is far lower than 1600℃ reported by other researchers. The preparation
of YAG-Al2O3 nanocomposite powders based on the co-precipitation method has promising application with merits of low cost, high production and simple processing.

Key words: YAG-Al2O3, nanocomposite powders, co-precipitation

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