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Microstructure and Wear Resistance of In Situ Synthesized TiC-TiB2 Particulate Reinforced Ni-Based Composite Coating by Argon-Arc Cladding
Abstract:
In situ synthesized TiC-TiB2 reinforced Ni based coating was fabricated by argon arc cladding on Q235 steel substrate using titanium, boron carbide, Ni60 as the precursor powders. The phase composite on and microstructure of the clad layer were investigated by means of X-ray diffraction analysis (XRD), scanning electron microscopy (SEM) and Energy Dispersive Spectrometer (EDS). The results show that uniformly distributed TiC particles with the black petals shape and TiB2 particles with rod shape could be synthesized by the situ reaction. Compared to those unreinforced Q235 steel substrate, the hardness and the wear resistance of TiC-TiB2 reinforced Ni based composite coating were significantly enhanced.
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Pages:
763-767
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Online since:
August 2014
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