A corrosion study on W-Cu alloys in sodium chloride solution at different pH

作     者：Dawei Guo Chi Tat Kwok Dawei Guo;Chi Tat Kwok

作者机构：Department of Electromechanical EngineeringUniversity of MacaoMacaoChina Institute of Applied Physics and Materials EngineeringUniversity of MacaoMacaoChina 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2021年第64卷第5期

页      面：38-56页

核心收录：

学科分类：080503[工学-材料加工工程] 0806[工学-冶金工程] 0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：finically supported by the project from the Multi-Year Research Grant(MYRG)of University of Macao(No.MYRG2018-00217-FST) 

主　　题：Tungsten-copper alloys Galvanic corrosion Potentiodynamic polarization Immersion test Chloride ion 

摘      要：A corrosion study of two types of tungsten-copper(W-Cu)alloys in 3.38 wt.%Na Cl solution with different pH at 25℃were investigated using potentiodynamic polarization and immersion *** is crucial that the corrosion behavior and preferential attacked phases of the W-Cu alloys were found to alter with p *** micro-galvanic effect of tungsten phase and copper binder played a significant *** was also proved that the existence of aggressive chloride ions could accelerate the Cu binder dissolution in acidic and neutral solution,which induced tungsten phase detachment and increased the corrosion rate of the W-Cu *** Cl-would accelerate the Cu binder dissolution of W-Cu alloys at high potential during polarization test in strong alkaline solution.