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赫庆坤, 王勇, 赵卫民, 程义远. 激光原位合成TiC-Ni-Mo涂层界面组织与磨损性能[J]. 焊接学报, 2009, (1): 77-80100.
引用本文: 赫庆坤, 王勇, 赵卫民, 程义远. 激光原位合成TiC-Ni-Mo涂层界面组织与磨损性能[J]. 焊接学报, 2009, (1): 77-80100.
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HE Qingkun, WANG Yong, ZHAO Weimin, CHENG Yiyuan. Interface microstructure and wear properties of TiC-Ni-Mo coatings prepared by in-situ fabrication of laser cladding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2009, (1): 77-80100.
Citation: HE Qingkun, WANG Yong, ZHAO Weimin, CHENG Yiyuan. Interface microstructure and wear properties of TiC-Ni-Mo coatings prepared by in-situ fabrication of laser cladding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2009, (1): 77-80100.
shu

激光原位合成TiC-Ni-Mo涂层界面组织与磨损性能

Interface microstructure and wear properties of TiC-Ni-Mo coatings prepared by in-situ fabrication of laser cladding

    摘要
  • 摘要: 利用激光熔覆原位合成了TiC-Ni-Mo复合涂层,借助于EPMA,TEM分析以及磨损试验,研究了TiC-Ni-Mo涂层的界面组织与磨损性能.结果表明,在涂层中添加5%Mo,可以细化TiC晶粒,改善涂层组织的均匀性,提高涂层硬度和耐磨性,降低摩擦系数,TiC/Ni界面存在如下位向关系:(001)TiC//(111)γ-Ni.添加10%Mo,涂层硬度和耐磨性下降.TiC颗粒中存在大量呈一定方向分布的位错,γ-Ni相内部的位错杂乱分布;熔覆层的耐磨机制为增强相的抗磨作用,磨损形貌为短而浅的犁沟。

     

    Abstract: TiC-Ni-Mo composite coating was prepared by in-situ fabrication of laser cladding. The interface microstructure and wear properties of the coating was investigated by means of EPMA, TEM and wear tests. The results show that, adding 5% Mo into the coating could improve uniformity, rigidity, wear resistance, refine TiC grains, reduce friction coefficients and exist orientation relationship: (001)TiC//(111)γ-Ni. The rigidity and wear resistance of coating decrease with the content of 10 % Mo. There are many directional dislocations inside TiC phase and dislocation tangles inside γ-Ni-binder phase. The wear mechanism of the coating is anti-wear action of reinforcing phases. The wear morphology is short and shallow furrows.

     

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