首页|累积叠轧焊Al/Mg/Al多层复合材料的腐蚀行为

累积叠轧焊Al/Mg/Al多层复合材料的腐蚀行为

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研究累积叠轧焊(ARB)Al1050/AZ31/Al1050多层复合材料的腐蚀行为,腐蚀介质为3.5％NaCl(质量分数)溶液,分析测试手段包括动电位极化测试(PDP)、电化学阻抗谱(EIS)、扫描电子显微镜(SEM-EDS)、拉曼光谱和X射线衍射(XRD)等.为了深入研究Al1050/AZ31/Al1050多层复合材料的耐腐蚀性和腐蚀产物,对ARB制备的Al1050/Al1050/Al1050多层复合材料进行了相似的测试作为对比.动电位极化曲线和电化学阻抗谱显示,ARB应变水平会显著影响腐蚀速率.与Al1050/Al1050/Al1050样品相比,Al1050/AZ31/Al1050多层复合材料具有更高的腐蚀速率和更低的极化电阻.AZ31层对腐蚀过程起主导作用.拉曼和XRD分析结果表明主要腐蚀产物为Mg(OH)2,且不含任何氯化合物(如(Mg(OH)2)·MgCl2).
Corrosion behavior of Al/Mg/Al multilayered composite elaborated by accumulated roll bonding
The corrosion behavior of an Al1050/AZ31/Al1050 multilayered hybrid composite fabricated by the accumulated roll bonding(ARB)technique up to six cycles in a 3.5 wt.％NaCl solution was studied through potentio-dynamic polarization tests(PDP),electrochemical impedance spectroscopy(EIS),scanning electron microscopy(SEM-EDS),Raman spectroscopy and X-ray diffraction(XRD).In order to deeply apprehend the corrosion resistance and corrosion products of the Al1050/AZ31/Al1050 multilayered hybrid composite,almost similar investigation was performed on the Al1050/Al1050/Al1050 multilayered sample elaborated by ARB up to one cycle.Potentiodynamic polarization plots and electrochemical impedance spectroscopy show that the corrosion rate is strongly affected by the ARB strain level.A higher corrosion rate and reduced polarization resistance are evidenced compared to the Al1050/Al1050/Al1050 multilayered sample.The AZ31 layers seem to dominate the corrosion process.Raman and XRD analyses confirm the presence of the main corrosion product of Mg(OH)2 and the absence of any chloride such as(Mg(OH)2)·MgCl2.

accumulated roll bonding(ARB)Al1050/AZ31/Al1050multilayered compositescorrosionintermetallics

Ismail BENCHERIFA、Khadidja ABIB、Khereddine ABDEL YAZID、Baya ALILI、Djamal BRADAI

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Laboratory of Metallic and Semiconducting Materials(LMSM),Department of Mechanical Engineering,University of Biskra,B.P.145,07000,Biskra,Algeria

Laboratory of Materials Physics,Faculty of Physics,University of Sciences and Technology-Houari Boumediene(U.S.T.H.B.),P.O.Box 32,El-Alia,Bab-Ezzouar,DZ-16111,Algiers,Algeria

Center for Development of Advanced Technologies,CDTA,Cité du 20 août 1956,Baba-Hassen,16303 Algiers,Algeria

累积叠轧焊 Al1050/AZ31/Al1050 多层复合材料 腐蚀 金属间化合物

2024

10.1016/S1003-6326(23)66386-1

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCD
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2024.34(1)
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