Preparation of ultrafine β-sialon powder by citrate sol-gel and carbothermal reduction nitridation

被引：2
|
作者：
Zhang, H. J. [1 ]
Zhang, H. T.
Miao, J. Q.
Wang, Z. L.
Jia, Q. L.
Jia, X. L.
机构：
[1] Zhengzhou Univ, High Temp Ceram Inst, Zhengzhou 450052, Peoples R China
[2] Henan Inst Sci & Technol, Dept Anim Sci, Henan 453003, Peoples R China
[3] Zhengzhou Univ, Sch Mat Sci & Engn, Henan, Peoples R China
来源：
High-Performance Ceramics IV, Pts 1-3 | 2007年 / 336-338卷
关键词：
beta-Sialon; sol-gel; carbothermal reduction nitridation;
D O I：
10.4028/www.scientific.net/KEM.336-338.927
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Ultrafine beta-sialon powder is synthesized by citrate sol-gel and carbothermal reduction and nitridation (CRN) process. The presence of small amounts of beta-sialon as crystal seed can obviously accelerate the formation of final beta-sialon product and lower its formation temperature. The effects of nitriding temperature on the formation of the final beta-sialon are investigated. The mean particle size of the prepared beta-sialon powder is 100 similar to 150 nm. The beta-sialon precursor gel and the ultrafine beta-sialon powder are characterized by XRD, TG-DTA and SEM. The isoelectric point of ultrafine beta-sialon is pH 2.46.
引用
收藏
页码：927 / 929
页数：3
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