高速电弧喷涂FeMnCr/Cr_3C_2涂层抗高温冲蚀磨损性能  

High-Temperature Erosion Behavior of High-Velocity Arc-Spraying FeMnCr/Cr_3C_2 Coatings

作　　者：罗来马[1] 刘少光 俞佳[1] 赵琪[3] 孙乃荣[3] 郦剑[1] 

机构地区：[1]浙江大学,浙江杭州310027 [2]温州科得力新特材料有限公司,浙江温州325029 [3]江苏科技大学,江苏镇江212003

出　　处：《稀有金属材料与工程》2010年第2期234-237,共4页Rare Metal Materials and Engineering

基　　金：浙江省科技厅一般工业项目(2009C31129)资助

摘　　要：针对超临界锅炉管道的严重冲蚀磨损问题,采用高速电弧喷涂技术在20钢表面制取耐磨涂层,并研究其高温冲蚀磨损特性。采用场发射扫描电子显微镜和X射线能谱分析等方法探讨涂层的冲蚀磨损规律。结果表明,FeMnCr/Cr3C2涂层最大冲蚀率出现在冲击角60°附近,表现出半塑性冲蚀磨损特征;其耐高温冲蚀性与FeCrNi/Cr3C2涂层相近,明显优于20钢。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/CraC2 coatings. The erosion resistance of FeMnCr/Cr3C2 coatings is closed to that of FeCrNi/Cr3C2 coatings, and obviously better than that of 20 steel.

关 键 词：FeMnCr/Cr3C2粉芯丝材 高速电弧喷涂 抗高温冲蚀磨损 

分 类 号：TG174.442[金属学及工艺—金属表面处理]