Wear resistance of Al2O3/WC-Co/epoxy coatings on TC18 (Ti-5Al-5Mo-5V-1Cr-1Fe) alloy

被引：12

作者：

Li Fengkun ^{[1
]}

Yan Yuqin ^{[1
]}

Li Shuqin ^{[1
]}

Wei Dongbo ^{[1
,2
]}

Wang Shiyuan ^{[1
,2
]}

Ding Feng ^{[1
]}

Duan Baozhang ^{[1
]}

Wang Zhangzhong ^{[3
]}

Zhang Pingze ^{[1
,2
,3
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 211106, Jiangsu, Peoples R China

[2] Nanjing Univ Aeronaut & Astronaut, Minist Ind & Informat Technol, Key Lab Mat Preparat & Protect Harsh Environm, Nanjing 211106, Jiangsu, Peoples R China

[3] Jiangsu Key Lab Adv Struct Mat & Applicat Technol, Nanjing 211167, Jiangsu, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2019年 / 374卷

基金：

中国博士后科学基金;

关键词：

Epoxy/Al2O3; coating; Epoxy/WC-Co coating; Friction and wear; TC18 titanium alloy; SLIDING WEAR; BEHAVIOR; EPOXY; NANOCOMPOSITES; FRICTION;

D O I：

10.1016/j.surfcoat.2019.05.014

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper, Epoxy/Al2O3 and Epoxy/WC-Co coating were obtained on TC18 titanium alloy by air spraying process. The effect of adding nano filler Al2O3 and WC-Co ceramic particle in the epoxy resin coating on dry sliding at ambient temperature has been investigated. It was found that the addition of Al2O3 and WC-Co particles could improve the hardness of epoxy coating while maintaining the toughness of the substrate, which is one of the reasons for the improvement of wear resistance. The results of wear test showed that the friction coefficients of Epoxy/Al2O3 and Epoxy/WC-Co coating were 0.72-0.73 and 0.62, slightly higher than that of the TC18 alloy substrate. However, the specific wear rates of the Epoxy/Al2O3 and Epoxy/WC-Co coating were greatly reduced and the wear resistance was improved. Compared with the TC18 titanium alloy substrate, the wear resistance of Epoxy/Al2O3 coating increased by 64.7%-69% after adding ceramic particles, which was slightly higher than that of Epoxy/WC-Co coating by 59.4%-62%. The excellent wear resistance of the Epoxy/Al2O3 can be attributed to its high resistance to plastic deformation and nano effect of Al2O3 particles. The wear mechanism of TC18 titanium alloy was mainly abrasive wear, while Epoxy/Al2O3 and Epoxy/WC-Co coatings were adhesive wear.

引用

页码：1100 / 1107

页数：8

共 21 条

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