无机材料学报

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共沉淀法制备纳米YAG粉体

王宏志; 高濂   

  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:2000-06-30 修回日期:2000-08-09 出版日期:2001-07-20 网络出版日期:2001-07-20

Preparation of Nanoscaled YAG Powders by Co-Precipitation Method

WANG Hong-Zhi; GAO Lian   

  1. State Key Lab of High Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050 China
  • Received:2000-06-30 Revised:2000-08-09 Published:2001-07-20 Online:2001-07-20

摘要: 用共沉淀方法,采用共滴的方式,仔细控制反应过程中的pH值,获得具有包裹结构的共沉淀物,在900℃煅烧后,可以获得纯YAG相粉体.研究了初始溶液浓度及pH值对粉体性能的影响,所制备的YAG粉体的比表面积随着初始溶液浓度的增加而减少,并随着滴定过程所控制的pH值的增加而迅速减少.通过优化工艺,可以获得颗粒大小为20~30nm,比表面达68m/g的纯 YAG粉体.

关键词: 共滴, YAG, 纳米粉体

Abstract: The precipitate with the microstructure of Y(OH)3 coating Al(OH)3 was obtained through keeping constant pH value in the co-precipitation processing, and pure YAG phase can be prepared after calcination precipite at 900℃. The special surface area of YAG powder became smaller with the increment of Y, Al solution concentration and pH value controlled during the titration. Nanoscaled YAG powder with the size of 20-30 nm and special surface area of 68m2/g can be prepared by the co-precipitation method.

Key words: Co-precipitation, YAG, Nano, Powder

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