添加YAG对ZrB_2及ZrB_2-Al_2O_3陶瓷抗高温氧化性的影响  

Effect of YAG addition on high-temperature oxidation resistance of ZrB_2 and ZrB_2-Al_2O_3 ceramics

作　　者：宋杰光[1] 王芳[1] 鞠银燕[1] 富伟[1] 李世斌[1] 纪岗昌[1] 马永红[1] 陈林燕[1] 

机构地区：[1]九江学院材料工程系九江市绿色再制造重点实验室,江西九江332005

出　　处：《粉末冶金技术》2011年第6期419-424,共6页Powder Metallurgy Technology

基　　金：江西省教育厅青年科学基金项目(GJJ09595);江西省教育科学"十一五"规划课题(09YB449);九江学院大学生自主创新性实验项目(09XSCXXSY13)

摘　　要：研究了掺杂相对ZrB2-YAG-Al2O3复相陶瓷高温抗氧化性能的影响,以提高高温陶瓷的高温抗氧化性能。结果表明:通过引入YAG制备的陶瓷和纯ZrB2陶瓷相比,在相同氧化条件下得到的氧化增重有所减小,在相同氧化条件下,引入YAG越多的陶瓷氧化增重越小,说明通过引入YAG可以改善ZrB2陶瓷的抗氧化性能。ZrB2-YAG-Al2O3陶瓷氧化增重随着YAG-Al2O3含量增大而减小,在700～1 200℃之间添加YAG-Al2O3和添加YAG有相似的高温氧化机理特性。The Effect of reinforced phase on oxidation property of ZrB2-YAG-Al2O3 multi-phase ceramics at high temperature were investigated,which can be helped to improve the performance of high-temperature ceramics.The results show that the oxidation weight gain is decreased with increasing the content of YAG.The oxidation weight gain is less than that of pure ZrB2 ceramics under the same oxidation conditions,which shows that the oxidation resistance property of ceramics is increased through adding the YAG phase.The oxidation weight gain of ZrB2-YAG-Al2O3 ceramics is decreased with increasing the contend of YAG-Al2O3,however,the high-temperature oxidation mechanism character of ceramics adding YAG or YAG-Al2O3 is similar at 700~1 200℃.

关 键 词：高温陶瓷 二硼化锆 复相陶瓷 增重 氧化性能 

分 类 号：TQ174.758[化学工程—陶瓷工业]