A NiCrBSi alloy coating was sprayed on H13 hot work mould using a high velocity oxygen fuel. The surface and cross-section morphologies of obtained NiCrBSi coating were observed using a field emission scanning electron microscope (SEM), its phases were analyzed using an X-ray diffractometer (XRD). The friction-wear behaviors of NiCrBSi coating were investigated using a high temperature wear tester, the morphologies and chemical elements of worn tracks were analyzed using a SEM and its configured energy dispersive spectrometer (EDS), respectively. The results show that the average COF of NiCrBSi coating at 500, 600, and 700 °C is 0.4046, 0.4039, and 0.3975, respectively. The wear mechanism of NiCrBSi coating at 500 and 600 °C is abrasive wear, adhesive wear and oxidation wear, while that at 700 °C is abrasive wear and oxidation wear, the wear resistance of NiCrBSi coating is dependent on the compounds of Ni, Si and Cr.
High velocity oxygen fuel (HVOF) NiCrBSi coating COF (coefficient of friction) Wear performance
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Financial support for this research by the Jiangsu Province Science and Technology Support Program (Industry) (BE2014818) is gratefully acknowledged.
Jacobsen S D, Hinrichs R, Aguzzoli C, Figueroa C A, Baumvol I J R, and Vasconcellos M A Z, Surf Coat Technol286 (2016) 129CrossRefGoogle Scholar