镁合金阳极强化阴极动力学的实验研究

IF 1.1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Pub Date : 2023-09-29 DOI:10.5006/4420

Taylor W. Cain, Carol F. Glover, John R. Scully

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引用次数: 0

摘要

通过电化学方法研究了18种不同的Mg合金(包括商业纯Mg、Mg- al、Mg- zn、Mg- sn和Mg-RE (RE =稀土元素)基合金)在无缓冲的0.6 M NaCl中阳极增强的阴极动力学行为。Mg-Al和Mg-Sn合金的总阴极增强随合金含量的增加而降低，而Mg-Zn基合金的阴极活性随合金含量的增加而增加。此外，以体积分数表示的次级相的较低分数通常导致对阳极增强的阴极动力学的较低敏感性。阴极活性增强的变化归因于合金元素、微观结构和溶解产物膜的性质。

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An Experimental Survey of Anodically Enhanced Cathodic Kinetics of Magnesium Alloys

The anodically enhanced cathodic kinetics behavior of eighteen different Mg alloys encompassing commercially pure Mg, Mg-Al, Mg-Zn, Mg-Sn, and Mg-RE (RE = rare earth element) based alloys was studied via global and local electrochemical methods in unbuffered 0.6 M NaCl. The total cathodic enhancement observed for Mg-Al and Mg-Sn alloys was found to decrease with increasing primary alloy content whereas the cathodic activity of Mg-Zn based alloys increased with alloying content. Furthermore, a lower fraction of secondary phases expressed as a volume fraction present generally lead to lower susceptibility towards anodically enhanced cathodic kinetics. The variations in enhanced cathodic activity were attributed to the identity of the primary alloying element, microstructure, and nature of the dissolution product film.

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来源期刊

Corrosion MATERIALS SCIENCE, MULTIDISCIPLINARY-METALLURGY & METALLURGICAL ENGINEERING

CiteScore

2.80

自引率

12.50%

发文量

审稿时长

3 months

期刊介绍： CORROSION is the premier research journal featuring peer-reviewed technical articles from the world’s top researchers and provides a permanent record of progress in the science and technology of corrosion prevention and control. The scope of the journal includes the latest developments in areas of corrosion metallurgy, mechanisms, predictors, cracking (sulfide stress, stress corrosion, hydrogen-induced), passivation, and CO2 corrosion. 70+ years and over 7,100 peer-reviewed articles with advances in corrosion science and engineering have been published in CORROSION. The journal publishes seven article types – original articles, invited critical reviews, technical notes, corrosion communications fast-tracked for rapid publication, special research topic issues, research letters of yearly annual conference student poster sessions, and scientific investigations of field corrosion processes. CORROSION, the Journal of Science and Engineering, serves as an important communication platform for academics, researchers, technical libraries, and universities. Articles considered for CORROSION should have significant permanent value and should accomplish at least one of the following objectives: • Contribute awareness of corrosion phenomena, • Advance understanding of fundamental process, and/or • Further the knowledge of techniques and practices used to reduce corrosion.