Corrosion and Biocompatibility of Pure Zn with a Micro-Arc-Oxidized Layer Coated with Calcium Phosphate
| Autor: | Ting Lu, Xinglong Zhu, Zhenlun Song, Lucai Wang, Huinan Liu, Qingke Zhang, Wensheng Sun, Yixuan Shi, Jianwei Shen, Lijing Yang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
pure Zn
calcium phosphate biocompatibility micro-arc oxidation hydrothermal treatment Materials science Biocompatibility Simulated body fluid Substrate (chemistry) Surfaces and Interfaces engineering.material Engineering (General). Civil engineering (General) Surfaces Coatings and Films Corrosion Dielectric spectroscopy Coating Materials Chemistry engineering TA1-2040 Polarization (electrochemistry) Layer (electronics) Nuclear chemistry |
| Zdroj: | Coatings, Vol 11, Iss 1425, p 1425 (2021) Coatings; Volume 11; Issue 11; Pages: 1425 |
| ISSN: | 2079-6412 |
| Popis: | Recent studies have indicated a great demand to optimize the biocompatibility properties of pure Zn as an implant material. For this purpose, CaZn2(PO4)2·2H2O (CaZnP) was prepared using hydrothermal treatment (HT) combined with micro-arc oxidation (MAO) on pure Zn substrate to generate biodegradable implants. The polarization test and electrochemical impedance spectroscopy indicated that the MAO1−HT coating could modulate the corrosion behavior of MAO1 by filling the crevice between the coating and the substrate. Immersion test evaluation revealed that the osteogenic properties of MAO1−HT coating were better than that of pure Zn substrate, as evidenced by the molar ratio of Ca and P, which increased after soaking in simulated body fluid (SBF) for up to 10 days. In addition, L-929 cells cultured in the 100%, 50%, and 25% extracts of MAO1−HT coated samples exhibited excellent cytocompatibility. Meanwhile, cell adhesion was promoted on the surface with high roughness generated during MAO and HT processes. In summary, the calcified coatings improved biocompatibility and adjusted the degradation rates of pure Zn, broadening the application of Zn alloys. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|