RTP silicon carbide powder uses high-purity submicron silicon carbide powder as raw material, and adds a special release agent. It has the characteristics of low forming pressure and sintering temperature. The pressureless sintered silicon carbide ceramics produced by it have the advantages of high strength, high hardness, wear resistance, acid and alkali corrosion resistance, and good thermal conductivity, and are widely used for prevention Bomb, chemical industry, machinery and other fields.