Research results show that composite aids are more effective than single aids to sintered Si 3N 4 ceramics, in which the rare-earth oxides and MgO-Al 2O 3-SiO 2 composite aids are more attractive.

• 研究表明 ,多组分助剂比单一组分助剂对氮化硅的助烧效果好 ,其中稀土氧化物和MgO -Al2 O3 -SiO2 体系比较受重视