A homogenous microstructural Mg-based matrix model for orthopedic application with generating uniform and smooth corrosion product layer in Ringer's solution:Study on biodegradable behavior of Mg-Zn alloys prepared by powder metallurgy as a case

Yang Yan; Kun Yu; Xin Chu; Xier Luo; Xuemei Xu; Yu Zhang; YiLong Dai; Ding Li; Liangjian Chen; Tao Xiao

首页> 中文期刊> 《镁合金学报（英文）》 >A homogenous microstructural Mg-based matrix model for orthopedic application with generating uniform and smooth corrosion product layer in Ringer's solution:Study on biodegradable behavior of Mg-Zn alloys prepared by powder metallurgy as a case

A homogenous microstructural Mg-based matrix model for orthopedic application with generating uniform and smooth corrosion product layer in Ringer's solution:Study on biodegradable behavior of Mg-Zn alloys prepared by powder metallurgy as a case

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摘要

For high corrosion resistance and extensively modified biodegradable Mg-based alloys and composites for bone implants,a new Mgbased matrix model prepared by powder metallurgy is discussed and developed.In this research,Mg-5 wt.%Zn alloys were selected as a case.And they were impacted by hot extrusion and aging treatments to construct microstructure with different characteristics.Their selfforming corrosion product layer in Ringer’s solution,biodegradable behavior and corrosion mechanism were minutely investigated by in vitro degradation,electrochemical corrosion and cytocompatibility.The results demonstrated the extruded Mg-5 wt.%Zn alloy aged for 96 h showed high corrosion resistance,good biocompatibility for L929 and excellent ability of maintaining sample integrity during the immersion.Significantly,the alloy showed fine-grain microstructure and uniform distributed hundred nano-sized second phases,which promoted the formation of the uniform and smooth corrosion product layer at the beginning of immersion.The corrosion product layer was more stable in chloride containing aqueous solution and could be directly formed and repaired quickly,which effectively protected the matrix from further corrosion.In addition,an ideal model of Mg-based matrix for bone tissue engineering was tried to presume and propose by discussing the causal relationship between microstructure and bio-corrosion process.

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《镁合金学报（英文）》 |2021年第001期|225-240|共16页
作者
Yang Yan; Kun Yu; Xin Chu; Xier Luo; Xuemei Xu; Yu Zhang; YiLong Dai; Ding Li; Liangjian Chen; Tao Xiao;
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作者单位

School of Materials Science and Engineering Central South University Changsha 410083 China;

School of Materials Science and Engineering Central South University Changsha 410083 China;

Department of Materials Science and Engineering Yantai Nanshan University Yantai 265713 China;

School of Materials Science and Engineering Central South University Changsha 410083 China;

School of Materials Science and Engineering Central South University Changsha 410083 China;

School of Materials Science and Engineering Central South University Changsha 410083 China;

School of Materials Science and Engineering Central South University Changsha 410083 China;

School of Materials Science and Engineering Central South University Changsha 410083 China;

The Second Xiangya Hospital Central South University Changsha 410011 China;

The Third Xiangya Hospital Central South University Changsha 410011 China;

The Second Xiangya Hospital Central South University Changsha 410011 China;

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A homogenous microstructural Mg-based matrix model for orthopedic application with generating uniform and smooth corrosion product layer in Ringer's solution:Study on biodegradable behavior of Mg-Zn alloys prepared by powder metallurgy as a case

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