Influence of albumin on in vitro degradation behavior of biodegradable Mg-1.5Zn-0.6Zr-0.2Sc alloy

被引：27
作者：
Li, Tao [1 ,2 ,3 ]
He, Yong [3 ]
Zhou, Jixue [1 ]
Tang, Shouqiu [1 ]
Yang, Yuansheng [1 ,2 ]
Wang, Xitao [4 ]
机构：
[1] Qilu Univ Technol, Shandong Acad Sci, Adv Mat Inst, Shandong Prov Key Lab High Strength Lightweight M, Jinan 250014, Shandong, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
[3] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
[4] Univ Sci & Technol Beijing, Collaborat Innovat Ctr Steel Technol, Beijing 100083, Peoples R China
来源：
MATERIALS LETTERS | 2018年 / 217卷
基金：
中国国家自然科学基金;
关键词：
Magnesium alloy; Degradation behavior; Albumin; Corrosion; Biomaterials; VIVO CORROSION; MAGNESIUM;
D O I：
10.1016/j.matlet.2018.01.082
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The immersion and electrochemical degradation behaviors of as-extruded Mg-1.5Zn-0.6Zr-0.2Sc (ZK21-0.2Sc) alloy in Hank's solution with and without albumins were investigated and the influencing mechanism was elucidated. The immersion experiment showed that the presence of albumins could inhibit the corrosion of the ZK21-0.2Sc alloy through the adsorption effect at the initial immersion stage. With immersing on, the albumins underwent denaturation and began to show the chelation effect, which accelerated the corrosion of the ZK21-0.2Sc alloy. With increasing albumin concentration, the corrosion potential of the ZK21-0.2Sc alloy increased while the corrosion current density greatly reduced. The electrochemical test showed the presence of albumins had nearly no change to the cathodic Tafel slops, but the anodic Tafel slops increased obviously with increasing albumin concentration. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：227 / 230
页数：4
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