The　research　uses　electric　arc　spraying　with　low　cost　and　convenient　operation　to　prepare　four　TiB2　particle　reinforced　composite　coatings　with　high　bonding　strength　and　uniform　tissue.　It　makes　comparative　study　on　elevated　temperature　erosion　actions　of　coating　and　45CT　of　electric　arc　spraying.　The　results　indicate　the　coating　has　excellent　erosion　wearing　resistance.　TiB2　particles　in　M-TiB2　coating　have　small　size,　have　good　unity　with　metallic　matrix,　and　are　distributed　on　metallic　matrix　with　high　hardness　relatively　uniformly,　and　porosity　of　coating　is　low.　The　coating　has　excellent　erosion　resistance.　©　(2014)　Trans　Tech　Publications,　Switzerland.