摘要
研究了热压烧结工艺制备的Ａｌ２Ｏ３／ＴｉＢ２和Ａｌ２Ｏ３／ＴｉＢ２／ＳｉＣＷ陶瓷复合材料在１３００℃的氧化行为用ＸＲＤ、ＳＥＭ、ＴＥＭ／ＥＤＳＡ分析了材料氧化后的相组成及显微结构．结果表明：两种材料在１３００℃空气中氧化３０ｈ内的氧化增重符合抛物线规律，ＳｉＣ晶须的加入可明显改善Ａｌ２Ｏ３／ＴｉＢ２材料的高温抗氧化性．
The isothermal oxidation behavior of Al2O3 /TiB2/ SiCW and Al2O3/TiB2 composites at 1300℃ was studied. Phase composition, microstructure and mechanical properties of the oxidized samples were investigated by XRD, SEM, TEM / EDSA. It was found that the oxidation of the two samples followed parabolic law and the Al2O3 / TiB2 / SiCWhave better oxidation resistance than that of Al2O3 / TiB2. The oxidation mechanisms of the two composites are also discussed.
出处
《腐蚀科学与防护技术》
CAS
CSCD
1995年第4期310-314,共5页
Corrosion Science and Protection Technology
