Comparison of Dry Sliding Tribological Behavior of Nanostructured Al2O3-13 wt% TiO2 Coatings Prepared by High-Efficiency Supersonic Plasma Spraying and Atmospheric Plasma Spraying

被引:3
作者
Jin, Zi-ang [1 ]
Ma, Jian-long [2 ,3 ]
Zhu, Li-na [1 ,4 ]
Wang, Hai-dou [2 ]
Li, Guo-lu [5 ]
Liu, Ming [2 ]
机构
[1] China Univ Geosci Beijing, Sch Engn & Technol, Beijing 100083, Peoples R China
[2] Acad Armored Forces Engn, Natl Key Lab Remfg, Beijing 100072, Peoples R China
[3] Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China
[4] China Univ Geosci Beijing, Zhengzhou Inst, Zhengzhou 451283, Peoples R China
[5] Hebei Univ Technol, Sch Materfials Sci & Engn, Tianjin 300130, Peoples R China
来源
JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME | 2021年 / 143卷 / 07期
基金
中国国家自然科学基金;
关键词
high-efficiency supersonic plasma spraying; nanostructured Al2O3-13 wt% TiO2 coatings; micromorphology; wear mechanism; ALUMINA-TITANIA COATINGS; MECHANICAL-PROPERTIES; WEAR BEHAVIOR; MICROSTRUCTURE; DEPENDENCY; FRICTION;
D O I
10.1115/1.4048886
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Plasma-sprayed ceramic coatings have been widely used in friction and wear protection of mechanical parts. In this paper, the nanostructured Al2O3-13 wt% TiO2 coatings were prepared by high-efficiency supersonic plasma spraying (HESP) and atmospheric plasma spraying (APS), respectively. The surface and section morphology of the coatings were observed by scanning electron microscopy (SEM). The phase composition of the coatings was analyzed by X-ray diffraction (XRD). The dry sliding friction properties of the coatings were tested on UMT-3 friction and wear testing machine. The results show that after plasma spraying, a large amount of gamma-Al2O3 phase appears, while the TiO2 phase almost disappears in the coatings; compared with APS, the coatings sprayed by HESP have fewer defects and better coating quality; under dry friction condition, the steady-state friction coefficient of the coatings sprayed by HESP and APS all decreases with the increase of load, and the wear volume all increases with the increase of load. When the load is more than 40 N, wear volume of the coatings sprayed by APS is basically twice that of HESP; the wear mechanism of the coatings sprayed by HESP is the laminar cracking, peeling off and the adhesive wear.
引用
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页数:10
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