Abstract

Plasma spraying was employed to spray commercial Ti2AlC MAX phase powders onto Inconel 600 substrates. Effects of different process parameters, including arc current, flow rates of primary Ar, secondary H2 and carrier Ar, powder feedrate, spray distance as well as presence of cooling air on the backside on the substrate were systematically screened by evaluating the content of Ti2AlC in the coating through X-ray diffraction and Rietveld phase analysis. The highest content of the remaining Ti2AlC in the coating was achieved to be 26.0%. The coating with 26.0wt% of Ti2AlC was further analyzed by a variety of techniques to probe its surface chemistry, morphology, cross-sectional microstructure, mechanical properties and salt fog corrosion resistance.

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