The corrosion behavior of AZ91 bulk alloy and thin films
Anti-Corrosion Methods and Materials
ISSN: 0003-5599
Article publication date: 1 August 2024
Issue publication date: 30 October 2024
Abstract
Purpose
The purpose of this study is to campare the corrosion behavior of Az91 films and bulk sample, in the objective to provide reference for the corrosion resistance improvement of Mg alloys.
Design/methodology/approach
AZ91 films with various thickness values are produced by magnetron sputtering technique, and the corrosion behavior was characterized by immersion tests and electrochemical measurements.
Findings
The AZ91 films exhibited a preferred orientation with basal planes parallel to the surface and increased densification with the increase of thickness, and a superior corrosion resistance for the AZ91 films compared with the bulk sample.
Originality/value
The preferred (0002) basal planes in AZ91 films benefited the corrosion resistance and the nanoscale AZ91 films facilitated the development of a dense passivation film. Consequently, AZ91 film exhibited a superior corrosion resistance.
Keywords
Acknowledgements
The authors are grateful for the support from the Shaanxi Natural Science Basic Research Program (No. 2023-JC-YB-293).
Conflicts of interest: On behalf of all authors, the corresponding author states that there is no conflict of interest.
Citation
Yang, Z., Du, Y., Ma, B., Wang, Q. and Yang, C. (2024), "The corrosion behavior of AZ91 bulk alloy and thin films", Anti-Corrosion Methods and Materials, Vol. 71 No. 6, pp. 755-763. https://doi.org/10.1108/ACMM-04-2024-2998
Publisher
:Emerald Publishing Limited
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