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316L stainless steel (316L SS) is easy to be damaged due to poor corrosion and wear resistance, the preparation of composite coating with excellent corrosion and wear resistance properties on the surface can lengthen its service life. In this aspect, Fe-based amorphous CoCrFeNi high entropy alloy (HEA) composite coating was prepared on 316L SS by laser cladding. The microstructure, phase, microhardness, wear and corrosion resistance of the coatings were analyzed by scanning electron microscope (SEM) equipped with energy disperse spectroscopy (EDS), X-ray diffraction (XRD), Vickers hardness tester, electrochemical workstation, and the friction and wear tester. The results show that the phase composition of the coatings was FCC solid solution. The microstructure of the coatings gradually evolved from regular cellular crystals to irregular amorphous structures, while the microhardenss of each coating changed little. The wear and corrosion resistance of the coatings was better than that of the substrate. When the content of Fe-based amorphous is 8%, the properties of the coating are the best.
Huang et al. (Sat,) studied this question.
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