SPHERICAL ALPHA SILICON CARBIDE, THE METHOD FOR MANUFACTURING THE SAME, AND A SINTERED BODY AS WELL AS AN ORGANIC RESIN-BASED COMPOSITE MADE FROM THE SILICON CARBIDE
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United States of America Patent
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Issued Date -
May 2, 2013
app pub date -
Oct 31, 2012
filing date -
Nov 1, 2011
priority date (Note) -
Abandoned
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Abstract
A spherical α type crystal silicon carbide powder having an average particle diameter is of 5 μm-60 μm, specific pore volume of the inside pores in it having a diameter of 1 μm or smaller is 0.02 cc/g or smaller, specific surface area of it is 1 m2/g or smaller, and average aspect ratio (short diameter/long diameter) of it is 0.65 or higher is proposed; a method for manufacturing the same including the steps of (1) spray-drying a slurry of a raw material silicon carbide powder which has an average particle diameter of 1 μm or smaller and has an α type crystal, to obtain porous and spherical particles, and (2) sintering the thus obtained porous and spherical particles, is also proposed.
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