| 引用本文: | 时小军， 姜海波， 王晓明， 姚巨坤， 张康， 孟祥民.Si含量对镁合金表面铝基涂层摩擦学性能的影响[J].中国表面工程,2014,27(4):37~42 |
| SHI Xiaojun, JIANG Haibo, WANG Xiaoming, YAO Jukun, ZHANG Kang, MENG Xiangmin.Impact of Silicon Content on Wear Behavior of Al-based Coating on the Surface of Magnesium Alloy[J].China Surface Engineering,2014,27(4):37~42 |
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| 摘要: |
| 为提高镁合金的耐磨性能，采用超音速微粒沉积技术在ZM5镁合金表面喷涂，完成Al12Si与Al15Si耐磨防护涂层的制备。利用扫描电镜(SEM)与三维形貌显微镜对抛光后涂层的微观形貌与成分进行观察，通过X射线衍射仪(XRD)、金相显微镜与显微硬度仪对两种涂层的组织与显微硬度分析，用摩擦磨损试验机对涂层进行摩擦试验，并对两种涂层摩擦磨损试验产生的磨痕微观形貌进行对比。结果表明: Al12Si涂层与Al15Si涂层中主要为αAl相和共晶组织，Al15Si涂层的硬度为135.9 HV0.05，高于Al12Si的硬度(113.2 HV0.05)；且两种涂层均以粘着磨损为主要磨损失效形式。Al15Si涂层在3种载荷下(10、20和30 N)的磨损体积均小于Al12Si涂层，Al15Si涂层具有较强的耐磨性能，可以更好地为镁合金基材提供长效耐磨防护。 |
| 关键词: 镁合金 超音速微粒沉积 铝 硅 摩擦 磨损 |
| DOI：10.3969/j.issn.1007-9289.2014.04.006 |
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| Impact of Silicon Content on Wear Behavior of Al-based Coating on the Surface of Magnesium Alloy |
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SHI Xiaojun, JIANG Haibo, WANG Xiaoming, YAO Jukun, ZHANG Kang, MENG Xiangmin
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Department of Equipment Maintenance and Remanufacturing, Academy of Armored Forces Engineering, Beijing 100072
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| Abstract: |
| To improve the wear resistant properties of ZM5 alloy, Al12Si, and Al15Si coatings were prepared by supersonic particles deposition. The microstructure and chemical composition of the coatings after polishing were investigated and analyzed by scanning electron microscope (SEM). Their structure and microhardness were studied by the Xray diffraction (XRD), optical microscope (OM) and the microhardness tester. Their wear scar morphologies that were made by the friction and abrasion testing machine were researched by SEM and threedimensional microscope. The results show the main phases of Al12Si coating and Al15Si coating are αAl and eutectic structure. The microhardness of Al15Si coating and Al12Si coating is 135.9 HV0.05 and 113.2 HV0.05. In addition, the main abrasion failure mechanism of the two coatings is adhesive wear, and Al15Si coating has the less volumes and the better antifriction properties in the conditions of 10, 20, and 30 N. All those indicate that Al15Si coating has the better antiwear properties, which can provide longtime protection for ZM5 magnesium alloy substrate. |
| Key words: magnesium alloy supersonic particles deposition aluminum silicon friction wear |
