反应火焰喷涂TiC-Fe涂层的耐磨性能

Wear Resistance of Reactive-flame-sprayed TiC-Fe Coatings

  • 摘要: 研究以钛铁、石墨和纯铁粉为原料,用反应火焰喷涂技术制备Tic-Fe金属陶瓷涂层的耐磨性能.结果表明,涂层中富TiC和贫TiC片层的显微硬度分别达11.9~13.7GPa和3.3~6.0 GPa.在SRV磨损试验机上经20 min的干磨擦试验表明,反应火焰喷涂TiC-Fe涂层具有良好的耐磨性能,大约是常规火焰喷涂WC-Ni45金属陶瓷涂层的5倍.综合磨痕的轮廓曲线及其SEM形貌发现,其磨损机理主要是粘着磨损,但也有少量细小的硬质相剥落.

     

    Abstract: The wear resistance of TIC-Fe cermet coating prepaid by reactive flame spray of ferrotitanimu, graphic and iron powders was sutdied. It was revealed that the microhardness of TiC-rich and TiC-poor layer within the TiC-Fe composite coatings is 11.9-13.7 GPa and 3.3-6.0 GPa, respectively. A dry wear test showed that their wear resistance is five times higher than WC-Ni45 cermet coatings obtained by traditional process. The major wear mechanisms are surface adhesion and a little stripping of TiC.

     

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