Plasma electrolytic oxidation (PEO) is a surface processing for oxide coatings formation with advanced properties. Mostly, PEO is performed in an aqueous solution electrolyte which limits the dimension of treated parts due to the system heating up. Therefore, treatment of large surfaces cannot be applied in aqueous electrolyte. In current work an alternative approach of PEO treatment applied in aluminum 1050 alloy in nitrate molten salt was investigated. The structure, phase and chemical compositions, and micro-hardness were examined using XRD, SEM, EDS and micro-hardness tests. The obtained results showed that formed coating contains from two phases of {\alpha}- Al2O3 and {\gamma}- Al2O3. It was found that formed coating is free of any contaminants originated from the electrolyte and has no damages, which are usually present in coatings formed in PEO treatment in aqueous solution electrolyte.
@article{arxiv.1810.03300,
title = {Creation of oxide coating on Al 1050 alloy},
author = {Alexander Sobolev and Alexey Kossenko and Michael Zinigrad and Konstantin Borodianskiy},
journal= {arXiv preprint arXiv:1810.03300},
year = {2018}
}
Comments
Proceedings of The Tenth International Conference on Material Technologies and Modeling MMT-2018, Ariel, Israel, (2018) 158-164