Preparation of Ultrafine SiC Powders by Carbothermal Reduction

摘要：

　　SiC powder was synthesized by carbothermal reduction method using silica sol and amylum as reactants in closed and open graphite crucibles,respectively.The phase composition and morphology of the powders were characterized.Formation of phase-pure silicon carbide can be achieved at 1700℃ for lb.Increasing reaction temperature and extending holding time can greatly promote the production of SiC.The products synthesized in open graphite crucibles are mainly composed of equiaxial β-SiC particles while those synthesized in closed graphite crucibles are β-SiC particles and nanorods.

关键词： Silicon carbide Carbothermal reduction Partial pressure

作者: Wang Fu Cao WenBin Sun Jialin He RongLiang

作者单位: School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,P.R.China

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 821-823

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）