Cr3C2-NiCr　composite　coatings　were　fabricated　by　atmospheric　plasma　spraying　technology.　Oxidation　and　molten　salt　(Na2SO4+25wt%NaCl)corrosion　tests　of　the　coating　were　conducted　at　800　℃　for　1　h.　Phase　compositions　and　microstructure　of　the　surface　and　cross-section　of　the　coating　after　oxidation/corrosion　tests　were　analysed　by　using　X-ray　diffraction(XRD)　technique　and　scanning　electron　microscopy(SEM)　equipped　with　an　energy　dispersive　spectrometer(EDX).　The　oxidation　and　corrosion　failure　mechanisms　of　the　Cr3C2-NiCr　coating　were　explored.　The　results　show　that　the　as-sprayed　coating　presents　lamellar　structure　without　visible　phase　decomposition　during　spraying　process.　The　coating　exhibits　excellent　oxidation　resistance　at　800　℃,　which　are　attributed　to　the　formation　of　continuous　and　dense　Cr2O3　layers　on　the　surfaces　and　the　splat　boundaries.　Oxides　on　the　surfaces　and　splat　boundaries　are　attacked　by　chlorine　under　corrosion　condition,　and　chlorine　is　able　to　diffused　through　the　coating　along　splat　boundaries.　Corrosion　is　extremely　severe　in　oxidizing　conditions　because　of　active　oxidation,　which　can　lead　to　great　degradation　of　the　coating.　©　2016,　Editorial　Office　of　＂Jinshu　Rechuli＂.　All　right　reserved.