SPHERICAL MONODISPERSION BETA-SIC PARTICLE AND ITS PRODUCTION

PURPOSE:To obtain spherical monodispersion beta-SiC particles having excellent sphericity and uniform particle size by sintering spherical gel which is obtained by hydrolyzing the mixture of silicone alkoxide and alkoxysilane incorporating hydrocarbon groups. CONSTITUTION:Silicone alkoxide such as e...

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Bibliographic Details
Main Authors KANZAKI SHUZO, NAGAOKA TAKAAKI, OOHASHI MASAYOSHI, HATAKEYAMA FUMIO
Format Patent
LanguageEnglish
Published 30.08.1991
Subjects
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Summary:PURPOSE:To obtain spherical monodispersion beta-SiC particles having excellent sphericity and uniform particle size by sintering spherical gel which is obtained by hydrolyzing the mixture of silicone alkoxide and alkoxysilane incorporating hydrocarbon groups. CONSTITUTION:Silicone alkoxide such as ethylsilicate and alkoxysilane incorporating at least one hydrocarbon group (e.g. phenyltriethoxy silane) are uniformly mixed by the molar concn. ratio of [C]/([Si]+[O]=0.91+ or -0.01 in alcohol (preferably 0.01-0.8mol/l concn.) and hydrolyzed. The obtd. spherical gel is separated, dried and sintered at 1300-1500 deg.C in vacuum or inert gaseous atmosphere for 1-10 hours to obtain spherical monodispersion beta-SiC powders having 0.1-10mum mean particle size.
Bibliography:Application Number: JP19890343235