Comparison of the corrosion behavior of AM60 Mg alloy with and without self-healing coating in atmospheric environment

Bibliographic Details
Title: Comparison of the corrosion behavior of AM60 Mg alloy with and without self-healing coating in atmospheric environment
Authors: Yingwei Song, Dan Liu, Weineng Tang, Kaihui Dong, Dayong Shan, En–Hou Han
Source: Journal of Magnesium and Alloys, Vol 9, Iss 4, Pp 1220-1232 (2021)
Publisher Information: KeAi Communications Co., Ltd., 2021.
Publication Year: 2021
Collection: LCC:Mining engineering. Metallurgy
Subject Terms: Self-healing coating, Micro-arc oxidation (mao) film, Atmospheric corrosion, Mg alloy, Inhibitor, Sediments, Mining engineering. Metallurgy, TN1-997
More Details: Coatings on the surface of Mg alloys are inevitably damaged during their practical applications, and corrosion can easily initiate from the damaged areas to accelerate the failure of Mg parts. A dual self-healing coating has already been developed to solve this problem in our previous work. Considering the practical application of this coating, it is necessary to investigate its service behavior in atmospheric environment. Thus, the corrosion behavior of AM60 Mg substrate with and without the self-healing coating was compared in Shenyang industrial atmospheric environment. The results show that the enrichment of sediments and rainwater on the scratch areas can accelerate the corrosion of the exposed Mg substrate. The inhibitors can be released from the damaged coating to inhibit corrosion. The dual self-healing coating shows better inhibition ability to narrow scratches due to the higher inhibitor concentration and less resumption. Also, the coating with wide scratches displays enough inhibition ability as well. The dual self-healing coating is a good alternative for Mg alloy parts in the practical applications.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 2213-9567
Relation: http://www.sciencedirect.com/science/article/pii/S2213956720301729; https://doaj.org/toc/2213-9567
DOI: 10.1016/j.jma.2020.05.018
Access URL: https://doaj.org/article/0523dd3cb82f4a409bc9a840122b8f5f
Accession Number: edsdoj.0523dd3cb82f4a409bc9a840122b8f5f
Database: Directory of Open Access Journals
More Details
ISSN:22139567
DOI:10.1016/j.jma.2020.05.018
Published in:Journal of Magnesium and Alloys
Language:English