摘要
用多弧离子镀技术在炮钢表面沉积两种TixAl1-xN薄膜,薄膜在空气中850℃恒温氧化10h,采用XRD、SEM和EDS对薄膜微观结构进行分析,检测其恒温抗氧化性能。结果表明,Ti0.5Al0.5N薄膜的抗高温氧化性能明显优于Ti0.7Al0.3N薄膜。Ti0.7Al0.3N薄膜由于基体Fe元素扩散至薄膜表面,使其表面形成Fe2O3和Fe3O4氧化物,导致薄膜过早失效;而Ti0.5Al0.5N薄膜的表面形成致密且粘附性好的Al2O3和TiO2混合氧化物,表现出优良的抗高温氧化性,同时基体元素和薄膜元素的适度扩散能提高薄膜与基体的结合力。
Two TixAl1-xN films were deposited on gun steel substrates by means of multi-arc ion plating technology.Specimens were isothermally oxidized for 10 hat 850 ℃in air,and the morphologies and compositions of the two films were investigated by XRD,SEM and EDS.The results showed that Ti0.5Al0.5N film exhibits obviously better oxidation resistance than Ti0.7Al0.3N film.For Ti0.7Al0.3N film,the oxides of Fe2O3 and Fe3O4formed on its surface due to the element Fe diffusion from the substrate,which caused the premature failure of the Ti0.7Al0.3N film.In contrast,a mixture oxides of Al2O3 and TiO2formed on the surface of the Ti0.5Al0.5N film,which showed excellent high temperature oxidation resistance.Meanwhile,the moderate diffusion of elements improved the adhesion between the film and the substrate.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2015年第14期14107-14111,共5页
Journal of Functional Materials
基金
辽宁省教育厅重点实验室基础研究资助项目(LZ2014013)
辽宁省教育厅资助项目(L2012058)
关键词
炮钢
多弧离子镀
TixAl1-xN
高温氧化
gun steel
multi-arc ion plating(MAIP)
TixAl1-xN
high temp eratureoxidation
