Crucible demolding agent material

The present invention provides a crucible demolding agent material, which mainly comprises silicon nitride, wherein the silicon nitride component contains 0.5-30 wt% of nanometer silicon nitride witha particle size of less than 100 nm. According to the present invention, the nano-scale silicon nitride powder can be used for coating generally large-particle size silicon nitride, and can further befilled in the gap formed by the stacking arrangement of large-particle size silicon nitride, such that the nano-scale silicon nitride can generate micro-sintering during the crystal growth so as to improve the bonding force between the silicon nitride of the crucible demolding agent, solve the problem of shedding or powder falling during the use of the crucible demolding agent in the prior art, and avoid the problems of step increase, cost increase and pollution generation caused by the adding of the binder. 本发明提供种坩埚脱模剂材料，主要是由氮化硅所组成，所述氮化硅成分中具有重量百分比介于0.5-30％，粒径小于100nm的纳米氮化硅。本发明中纳米级的氮化硅粉末可以包覆于般较大粒径的氮化硅及填入般较大粒径的氮化硅堆栈排列的空