Electrochemical and surface characterization of the corrosion of 6061 aluminum alloy and its composite with SiC in hydrochloric acid solutions

IF 2.4 4区化学 Q4 ELECTROCHEMISTRY

International Journal of Electrochemical Science Pub Date : 2025-07-22 DOI:10.1016/j.ijoes.2025.101133

Namitha Kedimar , Padmalatha Rao , Suma A. Rao

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引用次数: 0

Abstract

This article investigates the corrosion rates of 6061 aluminum alloy and 6061 Al-10(vol%) SiC_(p) composite (6061 Al-CM) by electrochemical techniques like potentiodynamic polarization and electrochemical impedance for five different HCl concentrations (0.01 M, 0.025 M, 0.05 M, 0.1 M, 0.25 M) and at five different temperatures (303 K, 308 K, 313 K, 318 K, 323 K). Kinetic parameters were determined using Arrhenius rate and transition state equations. The surface morphology was studied using a scanning electron microscope. Elemental mapping was done using energy-dispersive X-ray analysis, and the surface roughness was obtained from an atomic force microscope. The results showed that the corrosion rate was greater for 6061 Al-CM compared to aluminum alloy 6061 at all studied acid concentrations and at all temperatures. Surface morphology studies confirmed the active dissolution of composite and 6061 aluminum alloy in the presence of acid.

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6061铝合金及其SiC复合材料在盐酸溶液中腐蚀的电化学和表面表征

本文研究6061铝合金的腐蚀速率和6061年Al-10(卷%)碳化硅(p)复合(6061 Al-CM) potentiodynamic极化和电化学阻抗等电化学技术五个不同盐酸浓度(0.01 M, 0.025 M, 0.05 M, 0.1米,0.25 M)和五个不同温度(303 K 308 K 313 K, 318 K, 323 K)。利用阿伦尼乌斯速率和过渡态方程确定了动力学参数。用扫描电镜对其表面形貌进行了研究。元素映射是用能量色散x射线分析完成的，表面粗糙度是用原子力显微镜获得的。结果表明，在所有酸浓度和温度下，6061 Al-CM的腐蚀速率都大于6061铝合金。表面形貌研究证实了复合材料和6061铝合金在酸存在下的活性溶解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Electrochemical Science 工程技术-电化学

CiteScore

3.00

自引率

20.00%

发文量

714

审稿时长

2.6 months

期刊介绍： International Journal of Electrochemical Science is a peer-reviewed, open access journal that publishes original research articles, short communications as well as review articles in all areas of electrochemistry: Scope - Theoretical and Computational Electrochemistry - Processes on Electrodes - Electroanalytical Chemistry and Sensor Science - Corrosion - Electrochemical Energy Conversion and Storage - Electrochemical Engineering - Coatings - Electrochemical Synthesis - Bioelectrochemistry - Molecular Electrochemistry