涡轮叶片热障涂层热腐蚀性能研究  

Researches on Hot Corrosion Resistance of Thermal Barrier Coating for Turbine Blade

作　　者：姚青文[1] 徐佰明[1] 

机构地区：[1]哈尔滨汽轮机厂有限责任公司,哈尔滨150046

出　　处：《汽轮机技术》2014年第3期237-240,共4页Turbine Technology

摘　　要：热腐蚀性能是热障涂层最重要的性能指标之一,介绍了某型燃机涡轮叶片使用电子束物理气相沉积技术(EB-PVD)制备的某种热障涂层的显微组织结构,研究了其在两种熔盐腐蚀环境下的涂层失效机理。结果表明:此涡轮叶片表面使用EB-PVD制备的底层CoCrAlY厚度120μm+陶瓷层厚度80μm的热障涂层热腐蚀性能良好。Thermal corrosion resistance is the most important performance index of thermal barrier coating. This paper presents the microstructure of a certain thermal barrier coating produced with electron beam physical vapor deposition（EB-PVD） for certain gas turbine blades and conducts researches on coating failure mechanism in corrosive environment with two kinds of molten salts. The results show that the thermal barrier coating consisting of 120μm CoCrAlY primer and 80μm ceramic coating produced with EB-PVD technology can offer good hot corrosion resistance for turbine blade surface.

关 键 词：涡轮叶片 EB-PVD 热障涂层 热腐蚀 

分 类 号：TG174.453[金属学及工艺—金属表面处理]