等离子喷涂梯度涂层的显微组织结构和性能  

Microstructure and property of gradient coatings fabricated with plasma spraying

作　　者：赵海涛[1] 贾薇[1] 张学萍[1] 

机构地区：[1]沈阳工业学院材料工程分院,辽宁沈阳110016

出　　处：《沈阳工业大学学报》2003年第6期468-470,共3页Journal of Shenyang University of Technology

摘　　要：针对低散热发动机主要部件铝活塞顶部制备热障涂层的需要,用等离子喷涂法在铝基体上制备出梯度涂层,对其性能与显微组织结构进行了研究.抗热震实验结果表明,梯度涂层具有较高的结合强度.金相显微观测结果表明,梯度热障层结构致密,由基体至涂层表面,形成5种无宏观结合界面的成分呈梯度变化的组织结构.In order to use thermal barrier coatings on the top of aluminum piston in low heat emission engine,a gradient coatings is fabricated with plasma spraying.Its microstructure and property are investigated.Hot shock result indizcates that the TBCs has a high bond strength.Metallographilal picture shows that the best coatings can be obtained and to micro-interface betwcen Nilr CoAlY and ZrO\-2 which exists in duplex lowting eliminated.

关 键 词：梯度涂层 等离子喷涂 显微组织结构 热障涂层 铝基体 低散热发动机 

分 类 号：TG174.442[金属学及工艺—金属表面处理] TK403[金属学及工艺—金属学]