摘要
超音速火焰喷涂制作的金属黏结层加料浆喷涂制作的柱状晶结构陶瓷隔热层被视作新一代航空发动机和燃气轮机用热喷涂热障涂层,其中采用的MCrAlY金属黏结层正朝着长寿命、低成本、适用于新燃料的方向发展。本文综述近年来航空发动机和燃气轮机热端部件热障涂层用MCrAlY金属黏结层研究进展,并对涂层的结构设计与成分设计进行探讨。
The MCrAlY bond coats used for thermally-sprayed thermal barrier coatings applied to aeroengines and industrial gas turbines are reached their temperature limits.The further development is aiming to extend service life,low production cost and compatibility with new fuels.The new MCrAlYs have to be oxidation resistant and spallation resistant,and able to prevent SRZ formation caused by the diffusion with superalloy substrate,and to avoid the damage of thermo-mechanical properties.This paper reviewed recent developments in this area,and proposed a composite structured low-β/near-γ′type MCrAlY with a very low ϕ value and CTE closed to Al_(2)O_(3) to achieve the target.This approach may be cost effective,and more attractive to aeroengine and industrial gas turbine manufacturers,as well as coating developers and research institutions.Meanwhile,big data analysis will help to design new coating composition,speed up the development process and reduce R&D cost,lead to the findings of more durable thermal barrier coatings for aeroengine and industrial gas turbine applications.
作者
陈卫杰
宋鹏
高栋
汪超
CHEN Weijie;SONG Peng;GAO Dong;WANG Chao(Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650093,China;R&D Center,Dept.of Materials and Technology,AECC Commercial Aircraft Engine Co.Ltd.,Shanghai 200241,China;Institute for Gas Turbines,Shanghai Electric Co.Ltd.,Shanghai 200240,China)
出处
《航空材料学报》
CAS
CSCD
北大核心
2022年第1期15-24,共10页
Journal of Aeronautical Materials
关键词
燃气轮机
热障涂层
金属黏结层
长寿命
低成本
成分设计
gas turbine
thermal barrier coating
metallic bond coat
durability
low cost
alloy design
作者简介
通讯作者:陈卫杰(1963-),男,博士,教授,研究方向为结构材料及防护涂层,联系地址:昆明理工大学材料科学与工程学院(650093),E-mail:wrchenca@outlook.com。
