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Near‐Stoichiometric Silicon Carbide from an Economical Polysilane Precursor

 

作者: Dietmar Seyferth,   Timothy G. Wood,   Henry J. Tracy,   Jennifer L. Robison,  

 

期刊: Journal of the American Ceramic Society  （WILEY Available online 1992）
卷期: Volume 75, issue 5  

页码: 1300-1302

 

ISSN:0002-7820

 

年代: 1992

 

DOI:10.1111/j.1151-2916.1992.tb05578.x

 

出版商: Blackwell Publishing Ltd

 

关键词: silicon carbide;synthesis;polysilanes;precursors;pyrolysis

 

数据来源: WILEY

 

摘要:

Na condensation of CH3SiHCl2gives polysilanes of the type ((CH3SiH)x(CH3Si)y)n(wherex+y= 1) whose pyrolysis in a stream of Ar gives SiC and a substantial amount of elemental Si. Treatment of such polysilanes with catalytic quantities of group‐IV‐metal–organometallic complexes, ((η‐C5H5)2ZrH2)n, (η‐C5H5)2Zr(CH3)2, (η‐C5H5)2ZrHCl, and (η‐C5H5)2‐Ti(CH3)2, results in cross‐linking processes such that pyrolysis of these polysilanes gives close to stoichiometric SiC (≥95 wt %) and only v

 

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