An Investigation on the Microstructure of Multi-phase Composite Coatings Synthesized by Plasma Spraying Self-reaction Composite Powders

SELF-propagating high-temperature synthesis orcombustion synthesis(denoted as SHS)is referred to asuse of high exothermic reaction to prepare materials,itcan produce high melting point compounds,and is afairly simple technology[1-2].But,it is difficult tocontrol the reaction of SHS because the process of SHSis very fast.The density of materials made by SHS isvery lowj^4>5].Moreover,it is noticeable thatcoatings on the surface of the axle or plane cannot beproduced by SHS.For plasma spr…

An Investigation on the Microstructure of Multi-phase Composite Coatings Synthesized by Plasma Spraying Self-reaction Composite Powders

Multi-phase self-reaction composite (denoted as MPc) coatings containing ceramic and metal multi-phases were fabricated by plasma spraying Fe2O3-Al composite powders. This technology successfully combines self-propagating high-temperature synthesis with plasma spraying. The morphology of the composite powders was examined by scanning electron microscope (SEM). The phase composition and microstructure of the composite coating are studied.