Mechanical-activation-assisted combustion synthesis of SiC powders with polytetrafluoroethylene as promoter

被引：41
作者：
Yang, Kun
Yang, Yun
Lin, Zhi-Ming
Li, Jiang-Tao [1 ]
Du, Ji-Sheng
机构：
[1] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100080, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
[3] Liaoning Jiayi Met & Minerals Co Ltd, Dalian 116001, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2007年 / 42卷 / 09期
基金：
中国国家自然科学基金;
关键词：
carbides; chemical synthesis; X-ray diffraction;
D O I：
10.1016/j.materresbull.2006.11.037
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Mechanical-activation-assisted combustion synthesis of SiC has been conducted with polytetralluoroethylene (PTFE) as promoters. The mechanical activation of the Si-C reactants with the addition of NH4CI as process controlling agent during the high-energy attrition milling could substantially decrease the content of PTFE promoter, which is needed for inducing the Si-C combustion reaction. Ultra-fine beta-SiC powders with spherical particles were synthesized at PTFE content as low as 6 wt.%. The combustion synthesized SiC powders have a narrow particle size distribution in the range of 0.5-1 mu m. (C) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1625 / 1632
页数：8
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