Co-precipitation processed needle-like YAG dispersed in alumina powder

被引：14

作者：

Li, WQ ^{[1
]}

Gao, L ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, St Key Lab High Perf Ceram Superfine Microstruct, Shanghai 200050, Peoples R China

来源：

MATERIALS LETTERS | 2001年 / 48卷 / 3-4期

关键词：

needle-like; powders; YAG-Al2O3; co-precipitation;

D O I：

10.1016/S0167-577X(00)00296-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A co-precipitation method was used to prepare Al2O3-25 vol.% YAG powders from aqueous solutions of aluminum nitrate and yttrium nitrate followed by co-precipitation with an ammonia solution. The as-prepared powders were heat-treated up to 1400 degreesC. The microstructure and the phase evolution were observed by TEM and XRD. TEM shows the starting powders appear in whisker-like form. As the temperature is increased to 1250 degreesC, the hair-like form transformed to a needle-like form and has the YAC cubic structure. Possible growth mechanisms of needle-like YAG (YAG whisker) are discussed. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：157 / 161

页数：5

共 8 条

[1] MELTING BEHAVIOR AND METASTABILITY OF YTTRIUM ALUMINUM GARNET (YAG) AND YAIO3 DETERMINED BY OPTICAL DIFFERENTIAL THERMAL-ANALYSIS [J].