Sintering of transparent Nd:YAG ceramics in oxygen atmosphere

作     者：黄毅华 江东亮 张景贤 林庆玲 黄政仁 

作者机构：The State Key Laboratory of High Performance Ceramics and Superfine MicrostructureShanghai Institute of CeramicsChinese Academy of Sciences 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2013年第31卷第2期

页      面：153-157页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 08[工学] 0708[理学-地球物理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：Project supported by National Natural Science Foundation of China(50990301,51172263,51072210) Science and Technology Commission of Shanghai Municipality(12ZR1451900) 

主　　题：transparent ceramics YAG oxygen atmosphere sintering rare earths 

摘      要：Yttrium aluminum garnet （YAG） transparent ceramics were fabricated by sintering at oxygen atmosphere. Tetraethyl orthosilicate （TEOS） was added as the sintering additive to control the grain growth and densification. Pores were eliminated clearly at temperature lower than 1700oC, while grain size was around 3 μm. The in-line transmittance was 80% at 1064 nm when samples were sintered at 1710oC. The effect of TEOS was studied in oxygen atmosphere sintering for Nd：YAG transparent ceramics. At higher temperature like 1710oC, the grain growth mechanism was solute drag, while at 1630 and 1550 oC the grain growth was controlled by liquid phase sintering mechanism. And 0.5 wt.% TEOS was the best adding content for Nd：YAG sintered in oxygen atmosphere.