采用两步烧结方法制得的非化学配比镁铝尖晶石透明陶瓷的透光性能研究  

Optical Property of Non-stoichiometric Mg-Al Spinel Transparent Ceramics Prepared by Two-step Sintering Method

作　　者：黄存兵[1] 魏春兰[1] 

机构地区：[1]西安邮电学院数理系,西安710121

出　　处：《硅酸盐通报》2010年第2期464-467,共4页Bulletin of the Chinese Ceramic Society

基　　金：陕西省教育厅自然科学专项(09JK718);西安邮电学院中青年基金项目(ZL2009-32)

摘　　要：本文报道了以MgO.nAl2O3超细粉体为原料,采用真空烧结和热等静压结合的两步烧结技术制备了4种不同化学配比的镁铝尖晶石透明陶瓷,并对其红外和可见波段光学通过率进行了测试分析。结果表明:n=1.3和1.5的非配比透明陶瓷在紫外-可见波段和红外波段与化学配比透明陶瓷一样具有较高的光学透过率,而n=1.8的陶瓷的透过率则有较大程度的下降。This paper reports the Mg-Al spinel transparent ceramics with four different non-stoichiometries fabricated by two step sintering method of combining vacuum sintering and hot isostatic pressing sintering, from the MgO·nAl2O3 powder. Transmittances in visible and infrared regions of the ceramics were analyzed. The results show that the ceramics with n of 1.3 and 1.5 have as high transmittance from ultra- violet region to infrared region as that of the stoichiometric ceramics. In contrast, the transmittance in the same sector of the ceramics with n of 1.8 is significantly lower.

关 键 词：MgO·nAl2O3 透明陶瓷 光学透过率 

分 类 号：TB321[一般工业技术—材料科学与工程]