The in vivo and in vitro corrosion behavior of MgO/Mg-Zn-Ca composite with different Zn/Ca ratio

The effect of Zn/Ca ratio on the corrosion behavior of Mg-3Zn-0.2Ca-1.0MgO (3ZX) and Mg-1Zn-0.2Ca-1.0MgO (ZX) was investigated on the as-extruded specimens. Microstructure observations revealed that the low Zn/Ca ratio led to the grain growth from 1.6 µm in 3ZX to 8.1 µm in ZX. At the same time, the...

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Bibliographic Details
Published in:	Frontiers in bioengineering and biotechnology 2023-06, Vol.11, p.1222722-1222722
Main Authors:	Zhang, Shuquan, Tang, Chaokun, Feng, Jiangtao, Wang, Qi, Li, Chenguang, Zhang, Weihao, Zhou, Fengxin, Xue, Feng, Xu, Baoshan, Lyu, Shaoyuan, Chen, Minfang, Wang, Hao
Format:	Article
Language:	eng
Subjects:	Bioengineering and Biotechnology bone growth in vitro corrosion in vivo corrosion MgO/Mg-Zn-Ca composite second phase corrosion
Online Access:	Get full text
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Summary:	The effect of Zn/Ca ratio on the corrosion behavior of Mg-3Zn-0.2Ca-1.0MgO (3ZX) and Mg-1Zn-0.2Ca-1.0MgO (ZX) was investigated on the as-extruded specimens. Microstructure observations revealed that the low Zn/Ca ratio led to the grain growth from 1.6 µm in 3ZX to 8.1 µm in ZX. At the same time, the low Zn/Ca ratio changed the nature of second phase from the existence of Mg-Zn and Ca Mg Zn phases in 3ZX to the dominated Ca Mg Zn phase in ZX. The local galvanic corrosion caused by the excessive potential difference was alleviated obviously due to the missing of MgZn phase in ZX. Besides, the experiment also showed that ZX composite exhibited a good corrosion performance and the bone tissue around the implant grew well.
ISSN:	2296-4185 2296-4185