Development of Joint Material for Alumina and Zirconia Ceramics

研究了氧化铝与氧化锆陶瓷芯材的接合方法。添加微量氧化镁后，氧化铝和氧化锆复合陶瓷的连接强度与无连接的对照组相比有较高的提高。扫描电镜观察，氧化镁添加组微孔数量增多，孔径减小。而在部分稳定的氧化锆陶瓷中，尽管改变氧化镁的添加量、pH条件和烧结程序，氧化锆颗粒均形成团聚，颗粒不分散。导致结构中形成微孔隙，节理强度显著降低。

This study was to develop the methods of jointing ceramic core materials made from alumina and zirconia. The jointing strength of composite ceramic made from alumina and zirconia was increased as high as joint-free control group, using the jointing material supplemented a trace amount of magnesium oxide. At the Scanning Electron Microscope observation, a number of micro-pores and the pore size was decreased in magnesium oxide supplemented group. But in terms of partially stabilized zirconia ceramic, agglomerated particles were formed and zirconia grains were not dispersed, in spite of changing the additive amount of magnesium oxide, pH conditions and sintering schedules. As a result, micro pores were formed in the structure and jointing strength became a significantly lower.