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DIAO Wang-xun, TANG Hai-bo, FANG Yan-li, LIU Dong, ZHANG Shu-quan, WANG Hua-ming. Microstructure and wear resistance of laser clad Cr7C3 reinforced Cr-Ni-Si coating[J]. LASER TECHNOLOGY, 2011, 35(4): 457-460,467. DOI: 10.3969/j.issn.1001-3806.2011.04.006
Citation: DIAO Wang-xun, TANG Hai-bo, FANG Yan-li, LIU Dong, ZHANG Shu-quan, WANG Hua-ming. Microstructure and wear resistance of laser clad Cr7C3 reinforced Cr-Ni-Si coating[J]. LASER TECHNOLOGY, 2011, 35(4): 457-460,467. DOI: 10.3969/j.issn.1001-3806.2011.04.006

Microstructure and wear resistance of laser clad Cr7C3 reinforced Cr-Ni-Si coating

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  • Received Date: September 12, 2010
  • Revised Date: September 28, 2010
  • Published Date: July 24, 2011
  • A wear resistant Cr7C3 reinforced Cr-Ni-Si ternary metal silicide composite coating was fabricated on a substrate of A3 mild steel by means of laser cladding with Cr3C2 and 0.47Cr-0.50Ni-0.03Si alloy powder as the precursor material.The microstructure and composition of the coating were investigated by means of optical microscopy,scanning electron microscopy,Xray diffraction,energy dispersive spectrometer and electron probe micro-analyzer.Then the wear resistance of the coating was tested under dry sliding wear condition at room temperature.Results indicated that,microhardness of the Cr-Ni-Si coating was evidently improved because of the introduction of Cr7C3.The laser clad Cr7C3 reinforced Cr-Ni-Si ternary metal silicide composite coating shows excellent wear resistance under dry sliding wear test conditions.
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