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WANG Yongdong, LIU Xing, ZHU Yan, MAO Xinyu. Analysis on property and microstructure of Mo-Si composite coating deposited by argon shielded arc on Q235 steel surface[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2009, (5): 42-44.
Citation: WANG Yongdong, LIU Xing, ZHU Yan, MAO Xinyu. Analysis on property and microstructure of Mo-Si composite coating deposited by argon shielded arc on Q235 steel surface[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2009, (5): 42-44.
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Analysis on property and microstructure of Mo-Si composite coating deposited by argon shielded arc on Q235 steel surface

  • Department of Material Science and Technology, Heilongjiang Institute of Science and Technology, Harbin 150022, China

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  • Received Date: April 21, 2008
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  • Metal-silicide composite coating of FeMoSi/Fei3Si was prepared by in situ synthesis on the surface of Q235 steel by means of argon arc cladding technique with the pre-alloyed powder of Mo and Si.The microstructure and phases of coating were investigated by scanning electron microscope(SEM) and X-ray diffraction(XRD), meanwhile the microhardness and the wear resistance of coating were tested.The results show that the interface between the coating and substrate has excellent bonding and is free of pores and cracks.Microstructure of the coating is mainly composed of α-Fe, primary dendrite FeMoSi and interdendritic FeMoSi/Fe3Si eutectic structure.The microhardness was 3 times higher than that of Q235 steel and the maximum microhardness can reach 1 000 HV0.2, the wear resistance of coating was 11 times higher than that of Q235 steel substrate.
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