Mechanical behaviour of cp-magnesium with duplex hydroxyapatite and PEO coatings
- 点击次数：
- 影响因子：7.328
- DOI码：10.1016/j.msec.2014.12.081
- 发表刊物：MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
- 摘要：Hydroxyapatite magnesia coatings were formed on cp-magnesium by plasma electrolytic oxidation (PEO) followed by cathodic electrodeposition (CED). The static tensile and cyclic fatigue performance of the coated samples were investigated. The cracking behaviour of the coatings during the tensile tests was studied by fracture analysis. The effects of the surface treatment on the fatigue performance of the magnesium substrate were addressed. Tensile strength of cp-Mg was not significantly affected, whereas the fatigue performance was improved by the PEO + CEO coatings in the low-cycle region, possibly due to compressive residual stress induced to the metal substrate by the surface treatment. However, reduced fatigue strength was observed in the high-cycle region, which might be attributed to the defects at the coating/substrate interface produced during the surface modification. The in vitro corrosion reduced the fatigue strength in both the low- and high-cycle regions. Finally, the applicability of surface engineered magnesium for biomedical applications was demonstrated from the mechanical standpoint.
- 合写作者：Allan Matthews
- 第一作者：Yonghao Gao
- 论文类型：期刊论文
- 通讯作者：Aleksey Yerokhin
- 论文编号：WOS:000350514100020
- 卷号：49
- 页面范围：190-200
- ISSN号：0928-4931
- 是否译文：否
- 发表时间：2015-04-01
- 收录刊物：SCI、EI
