| 等离子喷涂铁基涂层的接触疲劳失效机理研究 |
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| 引用本文： | 朴钟宇,徐滨士,王海斗,濮春欢.等离子喷涂铁基涂层的接触疲劳失效机理研究[J].材料工程,2009(11). |
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| 作者姓名： | 朴钟宇 徐滨士 王海斗 濮春欢 |
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| 作者单位： | 1. 燕山大学机械工程学院,河北秦皇岛066004;装甲兵工程学院装备再制造技术国防科技重点实验室,北京100072
2. 装甲兵工程学院装备再制造技术国防科技重点实验室,北京,100072 |
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| 基金项目： | 国家863课题，国家自然科学基金，国防基金项目 |
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| 摘 要： | 对超音速等离子喷涂铁基涂层的接触疲劳失效机理进行了研究.使用球盘式接触疲劳试验机进行了涂层的接触疲劳实验,并通过对失效试样表面形貌的观察,总结出了涂层三种典型的失效形式,即点蚀、剥落和分层.分别研究了三种失效形式的相应的失效机理,结果表明:点蚀失效是由粗糙的表面引起的;剥落失效是由于表层与次表层的微观缺陷引起的;而分层失效则由涂层内部的剪切应力机制决定.
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| 关 键 词： | 等离子喷涂 铁基涂层 接触疲劳 失效形式 失效机理 |
Investigation of Contact Fatigue Mechanism of Plasma Spraying Fe-based Coating |
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| PIAO Zhong-yu,XU Bin-shi,WANG Hai-dou,PU Chun-huan.Investigation of Contact Fatigue Mechanism of Plasma Spraying Fe-based Coating[J].Journal of Materials Engineering,2009(11). |
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| Authors: | PIAO Zhong-yu XU Bin-shi WANG Hai-dou PU Chun-huan |
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| Affiliation: | PIAO Zhong-yu1,2,XU Bin-shi2,WANG Hai-dou2,PU Chun-huan2(1 School of Mechanical Engineering,YanShan University,Qinhuangdao 066004,Hebei,China,2 National Key Laboratory for Remanufacturing,Academy of Armored Forces Engineering,Beijing 100072,China) |
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| Abstract: | The contact fatigue mechanism of supersonic plasma sprayed Fe-based alloy coating was investigated.The contact fatigue experiments of coating were conducted by a ball-and-disc contact fatigue tester.Three typical failure modes were obtained after the analysis of worn surface morphologies,i.e.abrasion,spalling and delamination.And the failure mechanisms were investigated,respectively.The results showed that the abrasion failure is associated with asperity contact,the spalling failure is associated with micro... |
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| Keywords: | plasma spraying Fe-based coating contact fatigue failure mode failure mechanism |
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