Nucleation and growth behavior of protective coating by plasma electrolytic oxidation considering grain size of 6061 aluminum alloy

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作者

Maryam Chafiq¹ , Abdelkarim Chaouiki¹ , Young Gun Ko¹

1. School of Materials Science and Engineering, Yeungnam University

会议/活动

Conference on Research in Chemistry and Chemical Education, September 2022 (Bandung, Indonesia)

海报摘要

The work investigated nucleation and growth mechanism of protective coating during plasma electrolytic oxidation (PEO) by considering grain size of 6061 Al alloy substrate. Prior to PEO treatment, the substrate with grain size of 50 µm (coarse-grain, CG) was deformed via 4-pass differential-speed rolling (DSR) to achieve grain size of 1 µm (fine-grain, FG). Unlike CG, FG caused an early breakdown and more uniform characteristics of plasma sparks, resulting in the thick and compact layer. The nucleation and growth mechanism of the coating layer were scrutinized on the basis of transport behavior of massive electrons across the grain boundaries at the initial stage of PEO. The mechanical and corrosion properties of both samples were evaluated in a quantitative manner.

关键词

Plasma electrolysis, Surface modification, Differential-speed rolling, Nucleation, Growth

研究领域

Material Sciences

参考文献

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补充材料

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附加信息

利益冲突

No competing interests were disclosed.

数据可用性声明

The datasets generated during and / or analyzed during the current study are available from the corresponding author on reasonable request.

知识共享许可协议

Copyright © 2024 Chafiq et al. This is an open access work distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.