摘要
通过分析YAG-ZrB2基复相陶瓷氧化前后的增重率、物相和显微结构,研究了YAG-ZrB2基复相陶瓷在700～1300℃的氧化行为,为提高高温陶瓷的高温性能奠定了基础。研究表明,在700～900℃氧化温度范围内,YAG-ZrB2复相陶瓷基本上不发生氧化反应;在900～1200℃氧化温度范围内,随着氧化温度的升高,增重率缓慢升高;在1200～1300℃氧化温度范围内,随着氧化温度的升高,增重率急剧增大。当氧化时间短于1h时,YAG-ZrB2复相陶瓷的增重率变化很快,而当氧化时间超过1h时,增重率变化较缓慢。
Oxidation behavior of YAG-ZrB2 multi-phase ceramics at 700-1300℃is researched through analy- zing weight gain ratio, phase and microstructure of YAG-ZrB2 multi-phase ceramics, which lay a strong foundation for increasing the performances of high-temperature ceramics. The results show that YAG-ZrBa multi-phase ceramics is not practically oxidized at 700-900℃. At 900-1200℃, weight gain ratio of YAG-ZrB2 multi-phase ceramics increases slowly with the oxidation temperature increasing. At 1200-1300℃, weight gain ratio of YAG-ZrB2 multi-phase ceramics increases sharply with the oxidation temperature increasing. When oxidation time is less than 1 h, weight gain ratio of YAG-ZrB2 multi-phase ceramics increases sharply, however, weight gain ratio change slowly after oxidizing 1h.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2010年第8期62-64,共3页
Materials Reports
基金
江西省教育厅青年科学基金项目(GJJ09595)
江西省高校省级教改项目(JXJG-09-17-6)
九江学院大学生自主创新性实验项目(08XSCXXSY02)
关键词
ZrB2陶瓷
YAG
复相陶瓷
氧化行为
ZrB2 ceramics, YAG, multi-phase ceramics, oxidation behavior
