A COMPOSTION FOR PREPARING A LIQUID PHASE SINTERED SILICON CARBIDE POROUS BODY THE LIQUID PHASE SINTERED SILICON CARBIDE POROUS BODY USING THE COMPOSITION HAVING HIGH STRENGTH AND RESISTIVITY AND A METHOD FOR MANUFACTURING THEREOF

摘要

The present invention relates to a composition comprising a sintering assistant containing silicon carbide and an element selected from aluminum (Al), silicon (Si), yttrium (Y) and combinations thereof, a silicon carbide porous body made of the composition, . More particularly, the present invention relates to a method of preparing a sintering auxiliary containing an element selected from aluminum (Al), silicon (Si), yttrium (Y), and combinations thereof, and mixing the sintering aid and silicon carbide And sintering the silicon carbide formed body formed from the mixed powder at a low temperature of 1,400 ° C to 1,600 ° C to obtain a sintered body having a porosity of 40% or more, an average pore size of 1 탆 to 50 탆, a constant pore size distribution, And a silicon carbide porous body having a volume resistivity of 10 ⁸ Ω · cm or more is formed.