Two cored wires L1 and L2, have been developed to produce arc-spraying coatings for treating high temperature erosion wear of four tubes in the power station, grit erosion experiments under various conditions such as temperature, incident angle, grit weight and shocking velocity have been taken, results show that coating L1 prepared by the new cored wire is more erosion resistance than the comparative materials 20g steel, coating L2 has different behavior varies with the distinct state, from the basis of surface structure and erosion performance, it is also concluded that coating L1 and L2 show mainly plastic erosion wear behavior during the grit erosion process.

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