摘要
镍基燃气轮机空心叶片的发展和涡轮发动机进气口温度的提升,使传统的铝化物涂层制备工艺无法满足叶片需要的抗热腐蚀性能和抗高温氧化性能。CVD法（Chemical Vapor Deposition）能对空心叶片这种形状复杂、结构精密的零件进行涂层的制备,同时添加改性元素以提高涂层的综合性能。本文综述了铬、硅、活性元素（如Hf、Y）、铂族金属（如Pt、Pd）这4类改性元素的作用机理和对应的CVD法在镍基高温合金表面制备改性铝化物涂层工艺进展,并对其未来发展进行展望。
The traditional preparation process of aluminide coating cannot meet the required thermal corrosion and high temperature oxidation resistance of the hollow blades on nickel base turbine,due to both the development of the blades and the promotion of inlet temperature of turbine engine. The CVD（ Chemical Vapor Deposition） method can be used to prepare the coating on the hollow blade with complex shape and precise structure,and to enhance the comprehensive properties of the blade by adding modified elements at the same time. The action mechanism of four kinds of modifying elements such as chromium,silicon,active elements（ such as Hf,Y）,platinum group metals（ such as Pt,Pd）,and the advance of CVD technology used in preparation of modified aluminide coating on the surface of nickel base superalloy,are reviewed. Their prospective developments are also discussed.
作者
顿易章
吴勇
张磊
Dun Yizhang1,2, Wu Yong1,2, Zhang Lei1,2(1. Wuhan Research Institute of Materials Protection Wuhan Hubei 430030, China; 2. State Key Laboratory of Special Surface Protection Materials and Application Technology, Wuhan Hubei 430030, Chin)
出处
《金属热处理》
CAS
CSCD
北大核心
2018年第3期145-151,共7页
Heat Treatment of Metals
关键词
CVD
改性铝化物涂层
制备工艺
镍基高温合金
CVD
modified aluminide coating
preparation process
nickel base superalloy
