Two kind of alumina ceramics were metallized by Mo-Mn-Ti-Si-Al system paint. The results of sealing strength indicated that Mo-Mn-Ti-Si-Al system paint was fit for 95 ％ Al2O3 ceramic, but it was not fit for high pure alumina ceramics. And strength of metal-95％ Al2O3 ceramic seals reached above 150MPa. By analyzing the microstructure of metal- alumina ceramics seal section, the metallizing mechanism of high pure alumina ceramics was different from that of 95 ％ Al2O3 ceramic. The former was that glassy phase in metallizing layer was reaction with Al2O3 grains on the surface of ceramic. The latter was that glassy phase in metallizing layer migrated to ceramics, and glassy phase in ceramics migrated to metallizing layer.%用Mo-Mn-Ti-Si-Al系统膏剂金属化两种氧化铝陶瓷材料.封接强度实验结果表明,Mo-Mn-Ti-Si-Al系统膏剂不适宜高纯Al<,2>O<,3>陶瓷的金属化封接,而比较适宜95%Al<,2>O<,3>陶瓷的金属化封接.用该膏剂金属化95%Al<,2>O<,3>陶瓷,其焊接强度最高值可达150 MPa以上.通过显微结构分析发现,高纯Al<,2>O<,3>陶瓷的金属化机理与95%Al<,2>O<,3>陶瓷金属化的机理不同,前者中玻璃相仅仅通过高温熔解一沉析与表面的Al<,2>O<,3>晶粒反应,后者金属化层内玻璃相与陶瓷内玻璃相相互迁移渗透.
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