Microstructure evolution and nanohardness of nanostructured TiAlN coating under N+ ion irradiation

被引：10
|
作者：
Tai, Pengfei [1 ,2 ]
Pang, Lilong [1 ,2 ,3 ]
Shen, Tielong [1 ,2 ,3 ]
Wang, Zhiguang [1 ,2 ,3 ]
Jin, Peng [1 ,2 ]
Huang, Sihao [1 ,2 ]
Chang, Hailong [1 ,2 ,3 ]
Wei, Kongfang [1 ]
Cui, Minghuan [1 ,2 ]
Sun, Jianrong [1 ]
Chai, Jianlong [1 ]
机构：
[1] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
[2] Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China
[3] Huizhou Res Ctr Ion Sci, Huizhou 516000, Peoples R China
来源：
SURFACE & COATINGS TECHNOLOGY | 2022年 / 441卷
基金：
中国国家自然科学基金;
关键词：
Nanostructured TiAlN coating; Ion irradiation; Radiation-induced softening; N bubbles; TIN FILMS; MECHANICAL-PROPERTIES; WEAR PERFORMANCE; RESISTANCE; DLC; CRN;
D O I：
10.1016/j.surfcoat.2022.128494
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The present study deals with nanostructured TiAlN coating materials irradiated by 1.4 MeV N+ ions with different fluences and temperatures. The TiAlN coatings were synthesized by cathodic arc ion plating with average grain size of 10.5 nm. The microstructure evolution and nanohardness of coatings were investigated before and after irradiation by using TEM, GIXRD and nanoindentation. Our findings showed that there are no phase segregation and amorphization observed in all irradiated samples, indicating a good irradiation resistance of nano-structured TiAlN coating. Meanwhile, a great number of N bubbles have been observed located within grains and along the grain boundaries when the fluence exceeds 2.0 x 10(16) ion/cm(2) at room temperature irradiation. The nanoindentation results showed an obvious radiation-induced softening (RIS) effect in TiAlN coatings which is susceptible to the irradiation fluence and the irradiation temperature. It is found that the formation and the evolution of N bubbles located along the grain boundaries may dominate the RIS effect.
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页数：10
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