CoNiCrMo, FeCrNi, NiCr and FeNiAlMo modified iron based alloy coating deposited by plasma transferred arc process

Abstract

The technique of alloying an X120Mn12 steel substrate with the plasma transferred arc process was used to develop a surface with high toughness and wear resistance in high temperature applications. Co, Cr, Al and Ni-intermetallic phases were formed inside an Fe-based composite surface coating. The phase transformations on these coated surfaces were comprehensively examined using a combination of scanning electron microscopy and energy dispersive spectrometry microanalysis. The microstructure studies of the superficial layers of the coating revealed an inter-dendritic austenite (gamma) phase structure and fine eutectic Ni-based inter-metallics.