Composition for manufacturing silicon nitride substrate and silicon nitride substrate manufactured thereby

Abstract

Provided is a composition for manufacturing a silicon nitride substrate. According to an embodiment of the present invention, the composition for manufacturing a silicon nitride substrate comprises a mixed powder including a silicon-based powder and a nitride-based sintering aid, wherein the mixed powder has a particle distribution coefficient of variation (CV value) of 65-86%. According to the present invention, the sintered body is compact and has excellent thermal conductivity, and uniform physical properties can be exhibited whilst also having excellent mechanical strength such as bending strength or abrasion resistance.

Dependencies are inferred from the claim text.