A high-purity boron nitride powder specially developed for aluminum nitride / silicon nitride substrates, with high purity, low oxygen conteng, and moderate particle size, is widely used for green isolation or buried burning during the substrate sintering process. It can prevent substrate bonding, easily spearate sintered substrate sheets from each other, and do not pullute the product. It also reduces the surface roughness of the substrate and improves the product qualification rate.
