Fabrication of one-dimensional rod-like α-SiAlON powders in large scales by combustion synthesis

被引：17

作者：

Liu, Guanghua ^{[1
]}

Pereira, C. ^{[2
]}

Chen, Kexin ^{[1
]}

Zhou, Heping ^{[1
]}

Ning, Xiaoshan ^{[1
]}

Ferreira, J. M. F. ^{[2
]}

机构：

[1] Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Dept Mat Sci & Engn, Beijing 100084, Peoples R China

[2] Univ Aveiro, CICECO, Dept Ceram & Glass Engn, P-3810193 Aveiro, Portugal

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 454卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

chemical synthesis; X-ray diffraction; scanning electron microscopy;

D O I：

10.1016/j.jallcom.2007.01.009

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

alpha-SiAlON powders consisting of one-dimensional rod-like microcrystals were prepared by combustion synthesis in large scales. No obvious negative effect on reaction products was noticed by the increase of sample size, and alpha-SiAlON was synthesized as predominant phase in all the samples, even in CS-CL with the weight of 1000 g. These results showed good repeatability of combustion synthesis and its great potential in industrial production of alpha-SiAlON powders in large quantities. According to the phase composition of intermediate product, the reaction procedurein combustion synthesis of Ca alpha-SWON was proposed. At the same time, the strong influence of different starting compositions on the grain morphology of Yb alpha-SiAlON products was explained with the consideration of reaction temperature and grain growth character. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：476 / 482

页数：7

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