title: Synergistic effect of ultrasonic cavitation erosion and corrosion of WC-CoCr and FeCrSiBMn coatings prepared by HVOF spraying.
abstract: The high-velocity oxygen-fuel (HVOF) spraying process was used to fabricate conventional WC-10Co-4Cr coatings and FeCrSiBMn amorphous/nanocrystalline coatings. The synergistic effect of cavitation erosion and corrosion of both coatings was investigated. The results showed that the WC-10Co-4Cr coating had better cavitation erosion-corrosion resistance than the FeCrSiBMn coating in 3.5 wt.% NaCl solution. After eroded for 30 h, the volume loss rate of the WC-10Co-4Cr coating was about 2/5 that of the FeCrSiBMn coating. In the total cumulative volume loss rate under cavitation erosion-corrosion condition, the pure cavitation erosion played a key role for both coatings, and the total contribution of pure corrosion and erosion-induced corrosion of the WC-10Co-4Cr coating was larger than that of the FeCrSiBMn coating. Mechanical effect was the main factor for cavitation erosion-corrosion behavior of both coatings.
authors.affiliation: Institute of Metals and Protection, College of Mechanics and Materials, Hohai University, 1 Xikang Road, Nanjing 210098, PR China. Electronic address: hongsheng1988@126.com.
authors.forename: Sheng
authors.initials: S
authors.lastname: Hong
authors.affiliation: Institute of Metals and Protection, College of Mechanics and Materials, Hohai University, 1 Xikang Road, Nanjing 210098, PR China. Electronic address: wuyuping@hhu.edu.cn.
authors.forename: Yuping
authors.initials: Y
authors.lastname: Wu
authors.affiliation: Institute of Metals and Protection, College of Mechanics and Materials, Hohai University, 1 Xikang Road, Nanjing 210098, PR China.
authors.forename: Jianfeng
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, 62 Wencui Road, Shenyang 110016, PR China.
authors.forename: Yugui
authors.initials: Y
authors.lastname: Zheng
authors.affiliation: National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, Hohai University, 1 Xikang Road, Nanjing 210098, PR China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Zheng
authors.affiliation: College of Engineering, Nanjing Agricultural University, Nanjing 210031, PR China.
authors.forename: Jinran
authors.initials: J
authors.lastname: Lin
keywords: Cavitation; Corrosion; FeCrSiBMn; HVOF; Synergism; WC–CoCr