Corrosion behavior of Cu/Al casting-rolled clad plates in different alkaline solution

作     者：Yi-fan Zhang Xiao-guang Yuan Xiao-jiao Zuo Hong-jun Huang Yu-lin Cheng Yi-fan Zhang;Xiao-guang Yuan;Xiao-jiao Zuo;Hong-jun Huang;Yu-lin Cheng

作者机构：School of Materials Science and EngineeringShenyang University of technologyShenyang 110870China 

出 版 物：《China Foundry》 (中国铸造（英文版）)

年 卷 期：2021年第18卷第5期

页      面：513-520页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the National Natural Science Foundation of China(No.52001216) 

主　　题：Cu/Al clad plates alkaline solution pH anions electrochemistry casting-rolled 

摘      要：The effect of pH value and different kinds of anions on the corrosion behavior of Cu/Al casting-rolled clad plates in the alkaline solution was evaluated by means of scanning electron microscopy(SEM),energy dispersive spectroscopy(EDS),X-ray diffraction(XRD),weight loss analysis,3D confocal laser scanning microscopy(CLSM)and electrochemical *** show the corrosion mainly occurs on the aluminum *** corrosion resistance of the Cu/Al decreases as the pH value *** pH≥12,the dissolution of the film layer is faster than the passivation *** addition of Cl^(-)ions reduces the corrosion resistance of the Cu/Al clad plates,which leads to pitting *** higher the concentration of Cl^(-)ions,the more prone the pitting to *** addition of SO_(4)^(2-)ions causes the denudation of the *** corrosion resistance of the Cu/Al is better in the alkaline solution containing NO_(3)^(-)ions than that in the solution containing Cl^(-)ions or SO_(4)^(2-)*** adding SO_(4)^(2-),NO^(3)^(-)and Cl^(-)to the pure alkaline solution,the corrosion resistance of the Cu/Al clad plates decreases.