Synthesis of single phase β-SiAlON ceramics by reaction-bonded sintering using Si and Al2O3 as raw materials

被引：42

作者：

He, Enquan ^{[1
]}

Yue, Jianshe ^{[1
]}

Fan, Lei ^{[1
]}

Wang, Chao ^{[1
]}

Wang, Hongjie ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Shannxi, Peoples R China

来源：

SCRIPTA MATERIALIA | 2011年 / 65卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Reaction-bonded; beta-SiAlON; Crystal growth; Sintering; Scanning electron microscopy; COMBUSTION SYNTHESIS; SILICON-NITRIDE; FABRICATION; POWDER; DENSE;

D O I：

10.1016/j.scriptamat.2011.03.040

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Single-phase beta-SiAlON compacts with z = 1 have been synthesized by reaction-bonded sintering using Si and Al2O3 as raw materials. The nitrided samples consisted of fine equiaxed particles and continuous fibers. beta-SiAlON fibers with a diameter approximately 50 nm were obtained through the vapor solid mechanism. After post-sintering at 1650-1750 degrees C for 2 h, only beta-SiAlON phase with z = 1 was obtained. alpha-Si3N4 completely changed into beta-SiAlON through the solution-precipitation mechanism. beta-SiAlON shows different microstructures at different post-sintering temperature. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：155 / 158

页数：4

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