Cavitation erosion of the AA7050 aluminum alloy in 3.5 wt% NaCl solution—Part 2: an impedance investigation of the effect of cavitation intensity on interfacial states

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2025-04-11 DOI:10.1016/j.corsci.2025.112936

Chengcheng Pan , Yashar Behnamian , Yujie Guo , Zhenbo Qin , Wenbin Hu , Da-Hai Xia , Bernard Tribollet

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引用次数: 0

Abstract

The oxide film is crucial for the cavitation erosion resistance of passive metals, such as aluminum (Al) alloys. However, the properties of the oxide film and the way cavitation intensity impacts its dissolution mechanism remain unclear. In this study, electrochemical impedance spectroscopy (EIS) was employed to investigate the corrosion mechanism of an AA7050 Al alloy under cavitation erosion-corrosion (CEC) conditions. Morphological alterations, the degree of surface lattice distortion, and the composition of the oxide film were characterized. The influence of the gap width between the vibratory horn and the stationary samples on the CEC mechanism was also discussed. A comprehensive model that is independent of the gap width and considers the presence of one adsorbed intermediate, Al⁺, for anodic dissolution is proposed to elucidate the corrosion of Al under CEC conditions.

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.

Cavitation erosion of the AA7050 aluminum alloy in 3.5 wt% NaCl solution—Part 2: an impedance investigation of the effect of cavitation intensity on interfacial states

Abstract

Cavitation erosion of the AA7050 aluminum alloy in 3.5 wt% NaCl solution—Part 2: an impedance investigation of the effect of cavitation intensity on interfacial states