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王振廷, 秦立富. 氩弧熔覆Ni-Mo-Zr-WC-B4C复合材料涂层组织与耐磨性[J]. 焊接学报, 2009, (8): 13-16.
引用本文: 王振廷, 秦立富. 氩弧熔覆Ni-Mo-Zr-WC-B4C复合材料涂层组织与耐磨性[J]. 焊接学报, 2009, (8): 13-16.
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WANG Zhenting, QIN Lifu. Microstructure and wear resistance of argon arc cladding Ni-Mo-Zr-WC-B4_C composite coating[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2009, (8): 13-16.
Citation: WANG Zhenting, QIN Lifu. Microstructure and wear resistance of argon arc cladding Ni-Mo-Zr-WC-B4_C composite coating[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2009, (8): 13-16.
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氩弧熔覆Ni-Mo-Zr-WC-B4C复合材料涂层组织与耐磨性

Microstructure and wear resistance of argon arc cladding Ni-Mo-Zr-WC-B4_C composite coating

    摘要
  • 摘要: 利用氩弧熔覆技术,以Ni粉、Mo粉、Zr粉、WC粉和B4C粉为原料,在Q235钢表面原位合成了(Fe,Mo,W,Ni)2B,(Fe,Mo,W,Zr)C0.7,(Fe,Mo,W,Ni,Zr)(B,C)增强α-Fe基复合材料涂层.借助扫描电镜、X射线衍射仪、显微硬度计、摩擦磨损试验机对复合涂层组织和性能进行了测试和分析.结果表明,复合涂层与基体呈冶金结合,复合涂层无裂纹、无气孔.原位合成的增强相弥散分布于熔覆涂层中;复合涂层具有较高的硬度,平均约1300HV左右;在室温干滑动磨损试验条件下,熔覆层具有优异的耐磨性能,其耐磨性约为基体的14倍.

     

    Abstract: α-Fe-based composite coating reinforced by(Fe, Mo, W, Zr)C0.7, (Fe, Mo, W, Ni)2B, (Fe, Mo, W, Ni, Zr)(B, C) particles were prepared on the surface of Q235 steel by means of argon arc cladding technique with the pre-alloyed powder of Ni, Mo, Zr, WC and B4C.The microstructure and properties of the coating were investigated by scanning electron microscope, X-ray diffractometer, microhardness tester and friction and wear machine.The results indicate that the coating has excellent bonding between the coating and the Q235 steel substrate and is uniform, continuous and almost defect free.The particles are evenly distributed in the clad coating;composite coating has high hardness, which the average hardness of the coating is about HV1300.The argon arc clad composite coating has high hardness and excellent wear resistance under dry sliding wear test conditions, and the wear resistance of the coating is 14 times more than that of the matrix.

     

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