High-Temperature Erosion Behavior of High-Velocity Arc-Spraying FeMnCr/Cr3C2 Coatings
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Abstract:
FeMnCr/Cr3C2 cored wire was developed for building up the erosion-resistant coatings of super-critical boiler pipes by means of High-Velocity Arc Spraying. The high-temperature erosion behaviors at different impact angles of FeMnCr/Cr3C2 coatings were studied and compared with those of FeCrNi/Cr3C2 coatings and 20 steel by optical microscopy, scanning electron microscopy and energy dispersion spectrum analysis. Results show that FeMnCr/Cr3C2 coatings have the maximum erosive rate when the impact angle is about 60° due to the semi-brittleness erosion mechanism for FeMnCr/Cr3C2 coatings. The erosion resistance of FeMnCr/Cr3C2 coatings is closed to that of FeCrNi/Cr3C2 coatings, and obviously better than that of 20 steel.
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[Luo Laima, Liu Shaoguang, Yu Jia, Zhao Qi, Sun Nairong, Li Jian. High-Temperature Erosion Behavior of High-Velocity Arc-Spraying FeMnCr/Cr3C2 Coatings[J]. Rare Metal Materials and Engineering,2010,39(2):234~237.] DOI:[doi]