超声辅助微弧氧化的含石墨复合膜的组织结构及摩擦学性能
Microstructure as well as Friction and Wear Behavior of Graphite - Containing Composite Coating Prepared on Aluminum Substrate by Ultrasound - Assisted Micro-Arc Oxidation
查看参考文献13篇
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文摘
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为了提高铝合金微弧氧化膜的摩擦磨损性能,在微弧氧化电解液中添加石墨颗粒,并引入超声波进行微弧氧化,制备了含石墨的复合膜。利用扫描电子显微镜(SEM)观察了膜的表面和截面形貌,用X射线衍射仪(XRD)和激光拉曼光谱仪分析了膜的组成,在摩擦试验机上评价了膜的摩擦学性能。结果表明:添加石墨能有效降低微弧氧化膜的摩擦系数;同时引入超声波更有利于石墨微粒的分散,促进其进一步扩散和渗透,从而得到石墨分布更均匀、更致密的复合膜,膜的摩擦系数和磨损程度进一步降低。 |
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其他语种文摘
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Graphite powder was introduced into micro - arcoxidation electrolyte to prepare graphite - containing composite coating on Al alloy substrate via ultrasound-assisted micro-arc oxidation. The surface and cross - section morphologies of as - prepared graphite - ontaining composite coating were observed with a scanning electron microscope, while its composition was determined by X- ray diffraction and laser Raman spectrometry. Moreover,a friction and wear tester was performed to evaluate the friction and wear behavior of the as - prepared graphite - containing composite coating. Results showed that introducing graphite helped to effectively reduce the friction coefficient of the microarc oxidation coating, while applying ultrasound was favorable for enhancing the dispersion and permeation of graphite powder in the micro - arc oxidation coating thereby affording composite coating with improved uniformity and compactness as well as reduced friction coefficient and wear rate. |
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来源
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材料保护
,2014,47(8):7-9,14 【核心库】
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关键词
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微弧氧化
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超声波
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石墨
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铝合金
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组织结构
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摩擦学性能
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地址
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1.
中国科学院兰州化学物理研究所, 固体润滑国家重点实验室, 甘肃, 兰州, 730000
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兰州理工大学理学院, 固体润滑国家重点实验室, 甘肃, 兰州, 730050
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1001-1560 |
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学科
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金属学与金属工艺 |
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基金
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中国科学院“百人计划”项目
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文献收藏号
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CSCD:5291006
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