TiAl的抗环境性研究  

Research on Anti-environment Capacity of TiAl

作　　者：曲恒磊[1] 周廉[1] 魏海荣[2] 赵永庆[1] 

机构地区：[1]西北有色金属研究院,西安710016 [2]东北大学研究生院,沈阳110006

出　　处：《材料导报》2000年第10期32-35,共4页Materials Reports

摘　　要：TiAl吸氢量小,抗高温吸氢性优异。与镍基合金相比,TiAl抗燃气热腐蚀性及抗熔盐热腐蚀性均较好。TiAl的抗氧化性有限,未经表面改性处理时在800℃以上尚不足以使用。合金化元素、显微组织、机械载荷、表面状态等均可影响TiAl的高温氧化行为。Hydrogen-absorption resistance of TiAl is excellent. Combustion gas-hot corrosion resistance andmelting salt-hot erosion resistance of TiAl are better than that of Ni-based alloys However .anti-oxidation ability of TiAl is limited and it can not be used at temperatures above 800C for long time without surface modification treatment. Alloy elements,microslructures .mechanical load and surface state etc can all affect the high temperature oxidation behavior of TiAl remarkably.

关 键 词：高温氧化 热腐蚀 钛铝合金 航空材料 

分 类 号：TG146.23[一般工业技术—材料科学与工程] V252[金属学及工艺—金属材料]