引用本文:赵岩，吴志生，李华.等离子喷涂氧化铝碳纤维复合涂层的结构及耐磨性能[J].中国表面工程,2013,26(2):29~34
ZHAO Yan, WU Zhi-sheng, LI Hua.Microstructure and Anti-wear Properties of Plasma Sprayed Alumina-carbon Fiber Coatings[J].China Surface Engineering,2013,26(2):29~34
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等离子喷涂氧化铝碳纤维复合涂层的结构及耐磨性能
赵岩，吴志生，李华1,2
1. 太原科技大学 材料学院 太原 030024;2. 中国科学院宁波材料技术与工程研究所 表面事业部, 浙江 宁波 315201
摘要:
采用机械球磨方法制备了短线碳纤维，并与氧化铝粉末充分混合，利用等离子喷涂工艺制备了碳纤维质量分数为4%的复合涂层。利用场发射扫描电镜、拉曼光谱、X射线衍射、拉伸试验、摩擦磨损试验等对复合涂层的结构和性能进行了表征和测试分析。结果表明，碳纤维在等离子喷涂过程中较好地保持了原有结构和形貌，主要存在于氧化铝扁平粒子界面，碳纤维的加入使氧化铝涂层与基体之间的结合强度增加了38%，复合涂层耐磨性能比纯氧化铝涂层提高了64%，摩擦因数降低了50%。涂层耐磨性能的改善主要归功于参与磨损的碳纤维本身优异的润滑性能及其对氧化铝扁平粒子界面的结合作用，该复合涂层在低载荷摩擦磨损环境中具有潜在的应用价值。
关键词:  等离子喷涂  碳纤维  复合涂层  耐磨性
DOI：
分类号:
基金项目:中国科学院“百人计划”项目
Microstructure and Anti-wear Properties of Plasma Sprayed Alumina-carbon Fiber Coatings
ZHAO Yan, WU Zhi-sheng, LI Hua1,2
1. School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024;2. Division of Surface Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, Zhejiang
Abstract:
Short carbonfibers were prepared by ball milling method and were subsequently mixed with alumina powders. The composite powders (4% carbon fiber) were plasma sprayed to form coatings. Microstructure and properties of the composite coatings were examined by field emission SEM, Raman spectroscopy, XRD, tensile adhesive test and wear test. Results show that carbon fibers remain almost intact after spraying, revealing their even distribution in the coatings. The presence of the carbon fibers at the interfaces between alumina splats result in enhanced adhesion by 38%. The coatings with addition of 4% carbon fibers show that the antiwear performances significantly increases by 64% and the wear coefficient decreases by 50%. The improved antiwear behavior is presumably attributed to the lubrication characteristics of carbon fiber and enhanced alumina splats’ interfaces. This study gives clear insight into antiwear applications of the coatings.
Key words:  plasma spray  carbon fiber  composite coating  wear resistance
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