Development of Joint Material for Alumina and Zirconia Ceramics

本研究旨在开发氧化铝和氧化锆陶瓷型芯材料的连接方法。添加微量氧化镁的氧化铝-氧化锆复合陶瓷的接头强度与无接头对照组相当。扫描电镜观察显示，添加氧化镁组的微孔数量减少，孔径减小。而对于部分稳定氧化锆陶瓷，无论改变氧化镁的添加量、pH值条件和烧结制度，均形成团聚颗粒，氧化锆晶粒没有分散。结果，在结构中形成微孔，并且接合强度变得显著降低。

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.