纳米ZrO2对MoSi2涂层高温摩擦磨损行为的影响

中国机械工程 ›› 2011, Vol. 22 ›› Issue (12): 1498-1502.

纳米ZrO₂对MoSi₂涂层高温摩擦磨损行为的影响

胡小平1;颜建辉1;张厚安2

1.湖南科技大学,湘潭,411201

2.厦门理工学院,厦门,361024

出版日期:2011-06-26 发布日期:2011-07-01
基金资助:
国防基础科研计划资助项目(A3720060115)；湖南省科技厅计划资助项目(2010GK3144)
National Defense Basic Scientific Research Project（No. A3720060115）;
Hunan Provincial Program of Ministry of Science and Technology of China（No. 2010GK3144）

Effects of Nano-ZrO₂ on Friction and Wear Behaviors of MoSi₂ Coating at High Temperature

Hu Xiaoping1;Yan Jianhui1;Zhang Houan2

1.Hunan University of Science and Technology,Xiangtan,Hunan,411201

2.Xiamen University of Technology,Xiamen,Fujian,361024

Online:2011-06-26 Published:2011-07-01
Supported by:

National Defense Basic Scientific Research Project（No. A3720060115）;
Hunan Provincial Program of Ministry of Science and Technology of China（No. 2010GK3144）

摘要/Abstract

摘要：

采用等离子喷涂制备了MoSi₂及纳米ZrO₂强韧化MoSi₂复合涂层，分析了涂层与氧化铝配对副在1100℃大气环境中不同载荷下的摩擦磨损行为,并采用XRD、SEM对磨损表面进行了物相、形貌和成分分析,进而分析了涂层的磨损机理。结果表明：随着载荷的增大，MoSi₂和ZrO₂-MoSi₂涂层的摩擦因数和磨损率均逐渐减小,纳米ZrO₂降低了MoSi₂涂层的摩擦因数，增强了MoSi₂涂层的抗摩擦磨损能力;随着载荷的增加，MoSi₂涂层的磨损机制由黏着磨损向脆性断裂变化，但始终存在氧化磨损;ZrO₂-MoSi₂涂层磨损机制主要是氧化磨损和轻微黏着磨损,当载荷增加到40N时，还存在脆性剥落磨损;纳米ZrO₂降低了MoSi₂涂层的脆性脱落趋势。

关键词:

MoSi₂涂层, 纳米ZrO₂, 高温摩擦磨损性能, 磨损机理

Abstract:

MoSi₂ and ZrO₂-MoSi₂ coating were prepared by air plasma spraying.The friction and wear properties of two coatings at 1100℃ were studied and the wear mechanism was also analyzed by XRD and SEM technology.Results

show,with load increasing, the friction factor of MoSi2 and ZrO₂-MoSi₂ coating

reduces gradually.With the addition of nano-ZrO₂ into MoSi₂,the friction factor of MoSi₂ coating reduces and the adhesion resistance is improved. With the load increasing, the wear mechanism of MoSi₂ coating changes from adhesion wear to

brittle fracture, but the oxidation wear accompanies all along. The main wear

mechanism of 30%ZrO₂-MoSi₂ coating are oxidation wear and mild adhesive wear. When the load increases to 40N, the brittle flaking-off also exists. Nano-ZrO₂ can reduce the brittle flaking-off of MoSi₂ coating.

Key words:

MoSi₂ coating, nano-ZrO₂, tribilogical property at high temperature, wear mechanism

中图分类号:

TB304

胡小平1, 颜建辉1, 张厚安2.

纳米ZrO₂对MoSi₂涂层高温摩擦磨损行为的影响

[J]. 中国机械工程, 2011, 22(12): 1498-1502.

HU Xiao-Beng-1, YA Jian-Hui-1, ZHANG Hou-An-2.

Effects of Nano-ZrO₂ on Friction and Wear Behaviors of MoSi₂ Coating at High Temperature

[J]. China Mechanical Engineering, 2011, 22(12): 1498-1502.

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纳米ZrO₂对MoSi₂涂层高温摩擦磨损行为的影响

Effects of Nano-ZrO₂ on Friction and Wear Behaviors of MoSi₂ Coating at High Temperature

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