Hot Corrosion Performance of FeMnCrAl/Cr3C2 Coatings Deposited by High Velocity Arc Spraying
FeMnCrAl/Cr3C2 coating was deposited on AISI1020 steel substrates using a type of self-developed FeMnCrAl/Cr3C2 alloy cored wire by high velocity arc spraying. Microstructure and hot corrosion performance of FeMnCrAl/Cr3C2 coating at 700℃ were studied and analyzed by field emission scanning electron microscopy (FE-SEM), energy dispersion spectrum (EDS) and X-ray diffraction (XRD) analysis. The results show that FeMnCrAl/Cr3C2 coating was structurally featured by consisting of slatted layers of mainly Fe solid solution phases mixed with oxide phases, un-melted particles and pores. The hot corrosion resistance of FeMnCrAl/Cr3C2 was obviously improved that of AISI 1020 steel substrates. The improvement is basically attributed to the formation of aluminum oxide, chromium oxide and spinels of chromium and iron on the coating surface. These oxides block further corroded, and hinder the corroding and oxidizing inward progress.
High velocity arc spraying FeMnCrAl/Cr3C2 coating Hot corrosion resistance
LUO Lai-ma LUO Juan LIU Shao-guang YAO Ji- peng CONG Xin-ting LI Jian
Department of Materials Science and Engineering,Zhejiang University,Hangzhou 310027,China Wenzhou Cadre New Special Material CO.LTD,Wenzhou 325029,China
国际会议
The Fourth Asian Conference on Heat Treatment and Surface Engineering(第四届亚洲热处理及表面工程大会)
北京
英文
583-586
2009-10-27（万方平台首次上网日期，不代表论文的发表时间）