Improving the Properties of Porous Si3N4 Ceramics Using Coated Si3N4 Poly-Hollow Microspheres as Por

• 作 者: Xiao-YanZhang;Jia-MinWu;Jin-LongYang;
• 机 构: State Key Lab of New Ceramics and Fine Processing,School of Materials Science and Engineering,Tsingh
• 出 处: The 5th International Congress on Ceramics, ICC5(第五届国际陶瓷大会)
• 发表日期: 2014年期

　　As sintering additives,the Al2O3 and Y2O3 were well coated on the surfaces of Si3N4 poly-hollow microspheres using Al(NO3)3·9H2O and Y(NO3)3·6H2O as the starting materials through the heterogeneous precipitation.The solid loading of Si3N4 poly-hollow microspheres,the reactant concentrations(Al+ and Y+),stirring speed,and pH value were optimized to achieve well-coated Si3N4 poly-hollow microspheres.