| Ag含量对WC-12Co/Ag涂层高温摩擦性能的影响 |
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| 引用本文： | 付东兴,杨中元,张晓囡,张彬,孙昊,刘飞,李文杰.Ag含量对WC-12Co/Ag涂层高温摩擦性能的影响[J].热喷涂技术,2014(4):13-17. |
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| 作者姓名： | 付东兴 杨中元 张晓囡 张彬 孙昊 刘飞 李文杰 |
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| 作者单位： | 北京有色金属研究总院有研粉末新材料(北京)有限公司,北京100088 |
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| 摘 要： | 采用超音速火焰喷涂技术制备了三种不同Ag含量(10%,15%和20%)的WC-12Co/Ag涂层,将其高温摩擦性能与WC-12Co涂层进行对比。通过微观检测手段分析了Ag在涂层中的分布形态;检测了500℃,不同载荷(50N,100N,150N和200N)条件下,WC-12Co/Ag涂层摩擦因数随摩擦行程增加而变化的情况;并观察了涂层高温摩擦试验后磨痕微观形貌以及Ag元素的分布状态。试验结果表明:Ag元素在涂层中均匀分布,涂层中的Ag主要以单质的形式存在;在500℃条件下,当Ag含量大于15%时,Ag元素在磨损界面处形成一定厚度的连续润滑膜,起到良好的自润滑作用。
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| 关 键 词： | WC-12Co Ag 自润滑涂层 摩擦 超音速火焰喷涂 |
The Inlfuence of Ag Content on WC-12Co/Ag Coating Friction Performance |
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| FU Dong-xing,YANG Zhong-yuan,ZHANG Xiao-nan,ZHANG Bin,SUN Hao,LIU Fei,LI Wen-jie.The Inlfuence of Ag Content on WC-12Co/Ag Coating Friction Performance[J].Thermal Spray Technology,2014(4):13-17. |
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| Authors: | FU Dong-xing YANG Zhong-yuan ZHANG Xiao-nan ZHANG Bin SUN Hao LIU Fei LI Wen-jie |
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| Affiliation: | ( GRIPM Adwmced Materials Co. Ltd, General Research Institute for Nonferrous Metals, Beijing 100088, China ) |
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| Abstract: | Three WC-12Co/Ag coatings with different Ag contents （10%,15% and 20%） were sprayed by high velocity oxy-fuel （HVOF） technology, and the friction performance of WC-12Co/Ag coating and WC-12Co coating was studied. The distribution of the Ag in the coatings was observed. The friction coefficient variation of WC-12Co/Ag coatings at 500 ℃and different load（50N,100N,150N,200N） was detected. The microstructure of worn surface and distribution of Ag after high temperature friction wear testing were observed. Testing results indicated that there was a lot of Ag simple substance in coatings which distributed uniformly. The coatings with Ag content more than 15%perform well for the continuous Ag film appearing on the worn surface during the friction and wear testing at 500℃. |
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| Keywords: | WC-12Co Ag Self-lubricating coating Frictional HVOF |
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