摘要
以新型定向凝固钴基高温合金 DZ40 M为基体 ,研究其低压化学气相沉积铝化物涂层的循环氧化行为 ,发现该涂层具有较高的抗循环氧化性能 ,涂层与基体结合良好。涂层退化主要是由外表面氧化膜的愈合消耗 Al源所造成 ,沉积渗剂中加入 Ti可加速涂层的退化。
The cyclic oxidation behavior of aluminide coatings made by low pressure chemical vapor deposition on to a new Co base superalloy DZ40M has been investigated. It was found that these coatings bonded well to the matrix well. Coating degradation when it occurs is due primarily to a depleting Al source as the oxide scale on outer surface is heated during cyclic oxidation. This degradation will be accelerated if Ti is added to the aluminizing reagent during deposition.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2000年第4期231-234,共4页
Rare Metal Materials and Engineering
基金
国家重点攻关项目
金属腐蚀与防护国家重点实验室资助项目
关键词
DZ40M钴基合金
铝化物涂层
循环氧化
alloy DZ40M, aluminide coating, cyclic oxidation Biography: Liu Peisheng, Ph.D., Assistant Professor, Dept. of Mater. Sci. & Eng., Tsinghua University, Beijing 100084, P. R. China, Tel:0086 10 62782126
