Chinese Journal of Lasers, Volume. 40, Issue 10, 1003005(2013)

Microstructure and frictional wear Properties of Laser Clad in Situ CrxSy/Ni Composite Coating

Sun Ronglu1,2、*, Niu Wei1, Lei Yiwen1, and Tang Ying1
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
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    CrxSy/Ni coating is prepared on H13 steel by laser cladding using powder mixture of NiCrBSi+33%Ni/MoS2 (mass fraction). The microstructure of the coating is examined using optical microscope (OM), scanning electronic microscope (SEM), energy dispersive spectrometer (EDS), and X-ray diffractor (XRD). The frictional wear properties of the coating are tested. The results show that the coating consists of CrxSy particles distribute in γ-Ni dentrites and γ-Ni+MoNi4 eutectics matrix. The in situ formed CrxSy particles appear quasi-spherical shape, with size of 5~20 μm. The relatively larger particles are mainly distributed in the upper layer of the coating and the smaller particles are mainly distributed in the middle and bottom layer of the coating. Due to the lubrication of CrxSy, the friction coefficient of the situ formed CrxSy/Ni self-lubricating coating is significantly lower than that of laser clad NiCrBSi coating. However, its wear resistance slightly decreases.

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    Sun Ronglu, Niu Wei, Lei Yiwen, Tang Ying. Microstructure and frictional wear Properties of Laser Clad in Situ CrxSy/Ni Composite Coating[J]. Chinese Journal of Lasers, 2013, 40(10): 1003005

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    Paper Information

    Category: laser manufacturing

    Received: Apr. 19, 2013

    Accepted: --

    Published Online: Sep. 25, 2013

    The Author Email: Ronglu Sun (rlsun@tjpu.edu.cn)

    DOI:10.3788/cjl201340.1003005

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