Abstract
A 3Cr13/FeNiCrAl composite coating was prepared by high velocity arc spraying. Spraying FeNiCrAl cored wire was used as transition layer between 3Cr13 working coating and the mild steel substrate. The microstructure and the phase composition of the composite coatings were investigated by scanning election microscopy (SEM) equipped with the energy dispersion spectroscope (EDS) and the X-ray diffraction (XRD). Wear resistance and mechanical property of the coatings were studied and compared with the mild steel substrate. For the 3Cr13/FeNiCrAl composite coating, the resulting dense microstructure has relatively high adhesive strength value about 45·7 MPa. Moreover, the results of dry sliding wear test to the composite coating showed that the 3Cr13/FeNiCrAl composite coating had a more effectively wear resistance than that of the substrate.
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