摘要
设计了３种复合镀层系，研究了多弧离子镀Ｔｉ－Ｎ镀膜对Ａｌ，Ｎｉ，Ｃｏ的扩散屏障作用及Ｔｉ－Ｎ镀膜在１０００和１１００℃长期时效时的热稳定化结果表明，在１０００℃以下时效时，Ｔｉ－Ｎ镀膜稳定性良好，并可有效地阻止Ａｌ向基材扩散，可减缓、阻止Ｎｉ，Ｃｏ在ＣｏＣｒＡｌＴａＹ涂层与基体间的互扩散行为；在１１００℃时效时，Ｔｉ－Ｎ镀膜未分解，也不与基材及ＣｏＣｒＡｌＴａＹ涂层间发生互扩散，但组织形态由薄膜变为颗粒状，颗粒状Ｔｉ－Ｎ无法阻止Ｎｉ，Ｃｏ在ＣｏＣｒＡｌＴａＹ涂层与基材间的互扩散．
Several multi-layer coatings have been designed so as to assess the diffusion barriering ability against Al,Ni,Co,etc.as well as the high temperature stability of the multi-arc plated Ti-N film after being aged at 1000 and 1100℃ for a long time.The results show that,up to 1000℃,Ti-N film is of good stability;it can prevent effectively Al from diffusing towards matrix,and slow down the rate of diffusion of Ni,Co from CoCrAlTaY to matrix.Above 1100℃,the morphology of Ti-N film changes from thin foil to particles.Apparently the particle-shaped Ti-N can not prevent Ni,Co from the inter-diffusing between matrix and CoCrAlTaY coating.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1994年第2期B077-B081,共5页
Acta Metallurgica Sinica
关键词
包覆型涂层
扩散屏障
钛氮镀层
overlaying coating,diffusion-barrier coating,inter diffusion effect,Ti-N coating
