反应等离子喷涂TiC/Fe涂层的摩擦磨损性能研究  

Tribological Performance of TiC/Fe Coatings Fabricated by Reactive Plasma Spray

作　　者：张守全[1,2] 朱警雷[1] 黄继华[1] 王海涛[1] 张华[1] 赵兴科[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]厦门金鹭特种合金有限公司,福建厦门361006

出　　处：《材料工程》2009年第7期62-66,共5页Journal of Materials Engineering

基　　金：焊接国家重点实验室开放资助项目;河南杰出人才创新基金资助项目(0421001000)

摘　　要：采用等离子喷涂前驱体热分解技术制备的Fe-Ti-C系反应热喷涂粉末,在低碳钢基体上沉积TiC/Fe金属陶瓷复合涂层。利用SEM和X射线衍射仪对涂层的显微组织结构、磨损表面及其相组成进行分析;采用SRV型往复式摩擦磨损试验机评价喷涂涂层的摩擦磨损性能。结果表明:TiC理论含量为53%(质量分数)TiC/Fe金属陶瓷涂层的耐磨粒磨损性能较好,相比基体提高了约25倍;反应等离子喷涂TiC/Fe陶瓷涂层的磨损机制主要为粘着磨损和轻微的剥落。TiC reinforced Fe-based cermet coatings have been deposited on the mild steel substrate by reactive plasma spraying using Fe-Ti-C powder prepared by a precursor pyrolysis process. Microstructure, phase composition and wear surface of the coatings were examined by means of scanning electron microscopy and X-ray diffraction. Friction and wear test of TiC/Fe coatings and substrate were investigated by SRV abrasive tester. The results show that the TiC / Fe cermet coatings with 53%（mass fraction）TiC ceramic phases exhibited better abrasive wear resistance and about 25 times higher than that of the 45 mild steel. The adhesive wear and micro-spalling are the major wear mechanism of the TiC/Fe coatings fabricated by reactive plasma spraying.

关 键 词：反应等离子喷涂 碳化钛 摩擦磨损性能 

分 类 号：TH117.3[机械工程—机械设计及理论]