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In this paper, the NiCr-Cr3C2 coating was prepared by laser-hybrid plasma spraying (LHPS)technology, the NSS (Neutral Salt Spraying) test results showed that the LHPS NiCr-Cr3C2 coating had good corrosion-resistance performance comparing with the base material and the APS (air plasma spraying) coating. A SEM (scanning electron microscope) was used to analyze corrosion morphology of the samples, The LHPS coating overcame many shortcomings of the conventional spraying coatings such as poor bonding strength, many porosities, many cracks and so on. LHPS is able to improve the bonding strength as the interfaces are melted and joined by the laser simultaneously with plasma spraying. The coating achieves metallurgy bonding and its microstructure becomes more compact and therefore its corrosion-resistance performance is greatly improved

Researching for Corrosion-Resistance Performance of Laser-Hybrid Plasma Spraying NiCr-Cr3C2 Coating