Corrosion behavior of HVOF Inconel 625 coating in the simulated marine environment  

作　　者：彭超 钟丰平 袁梦 谢世杰 王学斌 Peng Chao;Zhong Fengping;Yuan Meng;Xie Shijie;Wang Xuebin(National Quality Inspection and Testing Center of Special Metal Structural Materials,Zhejiang Academy of Special Equipment Science,Hangzhou 310020,China;Key Laboratory of Special Equipment Safety Testing Technology of Zhejiang Province,Hangzhou 310020,China;Zhejiang-Ukraine Joint Laboratory for Materials and Welding Testing Technology,Hangzhou 310020,China)

机构地区：[1]National Quality Inspection and Testing Center of Special Metal Structural Materials,Zhejiang Academy of Special Equipment Science,Hangzhou 310020,China [2]Key Laboratory of Special Equipment Safety Testing Technology of Zhejiang Province,Hangzhou 310020,China [3]Zhejiang-Ukraine Joint Laboratory for Materials and Welding Testing Technology,Hangzhou 310020,China

出　　处：《China Welding》2024年第1期46-51,共6页中国焊接（英文版）

基　　金：supported by Zhejiang Provincial Natural Science Foundation of China(No.LTGC23E010001);the Youth Science and Technology Project of Zhejiang Provincial Administration for Market Regulation(No.QN2023427);Science and Techno-logy Project of State Administration for Market Regulation(No.2022MK054).

摘　　要：High velocity oxygen fuel(HVOF)spraying process is commonly used to produce superalloy coatings.Inconel 625 coating was prepared on Q235B low carbon steel by HVOF.A series of experiments were conducted to examine the surface and corrosion resistance properties of Inconel 625 HVOF coating.In this paper,potentiodynamic polarization tests and electrochemical impedance spectroscopy(EIS)tests were carried out to evaluate the corrosion resistance of Inconel 625 coating under simulated marine environment.The experiment-al results showed that Inconel 625 coating revealed low porosity and desired coating thickness.Shift in the corrosion potential(E_(corr))to-wards the noble direction combined with much low corrosion current density(i_(corr))indicating a significant improvement of HVOF Inconel 625 coating compared with the substrate.

关 键 词：high velocity oxygen fuel(HVOF) Inconel 625 coating marine environment corrosion 

分 类 号：TG174.4[金属学及工艺—金属表面处理]