Abstract
A novel approach to produce an intermetallic composite coating was put forward. The microstructure, microhardness, and dry-sliding wear behavior of the composite coating were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectrum (EDS) analysis, microhardness test, and ball-on-disc wear experiment. XRD results indicate that some new phases FeAl, Fe0.23Ni0.77Al, and Ni3Al exit in the composite coating with the Al2O3 addition. SEM results show that the coating is bonded with carbon steel metallurgically and exhibits typical rapid directional solidification structures. The Cr7C3 carbide and intermetallic compounds co-reinforced composite coating has a high average hardness and exhibits an excellent wear resistance under dry-sliding wear test compared with the Cr7C3 carbide-reinforced composite coating. The formation mechanism of the intermetallic compounds was also investigated.
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Zhang, Lm., liu, Bw. & Sun, Db. Preparation and properties of the Ni-Al/Fe-Al intermetallics composite coating produced by plasma cladding. Int J Miner Metall Mater 18, 725–730 (2011). https://doi.org/10.1007/s12613-011-0503-0
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DOI: https://doi.org/10.1007/s12613-011-0503-0