Mechanism for corrosion protection of β-TCP reinforced ZK60 via laser rapid solidification

被引：28

作者：

Deng, Youwen ^{[1
]}

Yang, Youwen ^{[2
]}

Gao, Chengde ^{[2
]}

Feng, Pei ^{[2
]}

Guo, Wang ^{[2
]}

He, Chongxian ^{[2
]}

Chen, Jian ^{[1
]}

Shuai, Cijun ^{[2
,3
,4
]}

机构：

[1] Cent South Univ, Xiangya Hosp 2, Dept Emergency Med, Changsha, Hunan, Peoples R China

[2] Cent South Univ, State Key Lab High Performance Complex Mfg, Changsha 410083, Hunan, Peoples R China

[3] Jiangxi Univ Sci & Technol, Ganzhou, Peoples R China

[4] Key Lab Organ Injury Aging & Regenerat Med Hunan, Changsha, Hunan, Peoples R China

来源：

INTERNATIONAL JOURNAL OF BIOPRINTING | 2018年 / 4卷 / 01期

关键词：

laser rapid solidification; ZK60/beta-TCP composite; degradation behavior; microstructure; IN-VITRO; MAGNESIUM ALLOYS; BEHAVIOR; BIOCOMPATIBILITY; MICROSTRUCTURE; FABRICATION; COMPOSITE;

D O I：

10.18063/IJB.v4i1.124

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

It remains the primary issue to enhance the corrosion resistance of Mg alloys for their clinical applications. In this study, beta-tricalcium phosphate (beta-TCP) was composited with Mg-6Zn-1Zr (ZK60) using laser rapid solidification to improve the degradation behavior. Results revealed rapid solidification effectively restrained the aggregation of beta-TCP, which thus homogenously distributed along grain boundaries of a-Mg. Significantly, the uniformly distributed beta-TCP in the matrix promoted the formation of apatite layer on the surface, which contributed to the formation of a compact corrosion product layer, hence retarding the further degradation. Furthermore, ZK60/8 beta-TCP (wt. %) composite showed improved mechanical strength, as well as improved cytocompatibility. It was suggested that laser rapidly solidified ZK60/8 beta-TCP composite might be a potential materials for tissue engineering.

引用

页数：11

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