阴极等离子体电沉积Pt颗粒弥散的Al_2O_3/YSZ复合涂层的性能研究（英文）  

Characteristics of Al_2O_3-Pt/YSZ-Pt Double Layer Composite Coatings Prepared by Cathode Plasma Electrolytic Deposition

作　　者：邓舜杰 蒋驰[2] 刘天伟[2] 帅茂兵[1] 王鹏 Deng Shunjie;Jiang Chi;Liu Tianwei;Shuai Maobing;Wang Peng(Science and Technology on Surface Physics and Chemistry Laboratory,Mianyang 621907,China;China Academy of Engineering Physics, Mianyang 621900,China;Research Institute of Aerospace Special Materials and Processing Technology,Beijing 100076,China)

机构地区：[1]表面物理与化学重点实验室,四川绵阳621907 [2]中国工程物理研究院,四川绵阳621900 [3]航天材料及工艺研究所,北京100076

出　　处：《稀有金属材料与工程》2018年第12期3590-3596,共7页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China(51271030,51801191);China Postdoctoral Science Foundation(2017M623066)

摘　　要：采用阴极等离子电解沉积弥散Pt颗粒增韧YSZ-Pt/Al_2O_3-Pt双层复合涂层。涂层中弥散的Pt颗粒阻碍的氧在涂层中的扩散,提高了涂层的抗氧化性能。Pt颗粒的弥散增韧显著提高了涂层的断裂韧性,缓解了陶瓷层与合金基体在高温下产生的热应力,使得涂层在高温服役过程中具有良好的抗剥落性能。Al2O3-Pt/YSZ-Pt double layer composite coatings were prepared by cathode plasma electrolytic deposition(CPED) on the superalloy with a NiCoCrAlY bond-coat. The composite coatings consist of an Al2O3-Pt film and a YSZ-Pt top-coat and show a good adhesion to the metallic bond-coat. It is demonstrated, from the cyclic oxidation test and mechanical properties test, that such coatings possess good oxidation and spallation resistance. These beneficial results can be attributed to these effects: owing to the extremely low oxygen diffusion rate of Al2O3-Pt film, such composite coatings can inhibit further oxidation of the bond-coat; the mechanical properties of Al2O3-Pt/YSZ-Pt composite coating are improved by the toughening effect of Pt particles.

关 键 词：阴极等离子体电沉积 抗高温氧化性能 复合涂层 颗粒增韧 

分 类 号：TG174.4[金属学及工艺—金属表面处理]