Microstructure and wear-resistant behaviors of Al2O3-TiO2 2 O 3-TiO 2 reinforced Ni-based composite coating plasma-sprayed on 6061 aluminum alloy

被引:4
|
作者
Yu, Xiang
Jiang, Rui
Gao, Yang [1 ]
Li, Yupeng [1 ]
Gong, Wenbiao
Li, Xuesong
Lue, Wei
机构
[1] Changchun Univ Technol, Key Lab Adv Struct Mat, Minist Educ, Changchun 130012, Peoples R China
来源
关键词
Nickel-based alloy coating; Plasma spraying; Heat treatment; Wear resistance; TRIBOLOGICAL PERFORMANCE; MECHANICAL-PROPERTIES; THERMAL-STABILITY; CERAMIC COATINGS; HEAT-TREATMENT; PROPERTY; TEMPERATURE;
D O I
10.1016/j.surfcoat.2024.131032
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Aluminium alloy is a widely used lightweight alloy in automobile and rail vehicle components, especially in parts such as brake pads and wheels, which require high wear resistance. Herein, to improve the wear resistance of aluminium alloys, Al2O3-13%TiO2 2 O 3 - 13%TiO 2 (AT13) reinforced Ni-based composite coatings were prepared by plasma spraying on 6061 aluminium alloy. The impact of AT13 content and heat treatment on the microstructure and wear resistance of Ni-based alloy coatings was systematically investigated. From our analysis, it was demonstrated that, in comparison to the substrate, the average micro-hardness of the composite coating with 10 %AT13 increased by more than 11 times, with a high value of 1250.81 HV0.2. 0.2 . Moreover, the average friction coefficient and wear rate reduced by 66 % and four orders of magnitude, with low values of 0.17 and 8.99 x 10-- 7 mm3(N-1 center dot m- 3 (N- 1 center dot m- 1 ), respectively, which indicated a significant enhancement in wear resistance. In addition, after heat treatment at 450 degrees C for 2 h, the micro-hardness of the composite coatings was improved, and the wear rate further decreased. This effect could be attributed to the encapsulation of the hard ceramic particles in the nickel- based alloy, which may suppress the dislocation motion in the composite coating. This study provides valuable insights into enhancing the wear resistance of metal-based alloy coatings with ceramic composite coatings.
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页数:11
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