| Autor: |
Yourong Guo, Yi Zhang, Peng Zhou, Shuyi Li, Gaowu Qin, Tao Zhang, Fuhui Wang, Liangyu Chen |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Journal of Materials Research and Technology, Vol 32, Iss , Pp 926-936 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2238-7854 |
| DOI: |
10.1016/j.jmrt.2024.07.209 |
| Popis: |
In this work, plasma electrolytic oxidation (PEO) with a fluoride-based electrolyte was performed on Mg-0.45Ca-xZn (x = 0, 0.45, 1.0, 2.0 wt%) alloys to enhance their degradation properties. These PEO coatings were composed of a porous layer and a barrier layer for alloys with Zn ≥ 0.45 wt%, while the coating on Mg-0.45Ca alloy was consisted of a dense inner layer and a porous outer layer. The content of Zn in the alloy has no significant effect on the hardness, adhesion strength and composition of the PEO coating. All coated-Mg-0.45Ca-xZn samples in this work showed decent anti-degradation properties in the simulated body fluid (SBF). Among them, PEO coatings on Mg-0.45Ca-1.0Zn and Mg-0.45Ca-2.0Zn alloys could provide excellent protection to the substrate over 3 months and exhibited good biocompatibility with Grade 0–1 of cytotoxicity, which were expected to be applied in the biomedical field. Besides, PEO process in this work enabled a high-quality coating to be formed on Mg–Ca–Zn bone screws. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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