Characterization and corrosion properties of hydroxyapatite/graphene oxide bio-composite coating on magnesium alloy by one-step micro-arc oxidation method

被引：108
作者：
Wen, Cuilian [1 ,2 ]
Zhan, Xiaozhang [1 ,2 ]
Huang, Xiaogui [1 ,2 ]
Xu, Feng [1 ,2 ]
Luo, Lijin [3 ]
Xia, Chengsen [1 ,2 ]
机构：
[1] Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350116, Peoples R China
[2] Fuzhou Univ, Key Lab Ecomat Adv Technol, Fujian Prov Univ, Fuzhou 350116, Peoples R China
[3] Fujian Inst Microbiol, Fujian Prov Key Lab Screening Novel Microbial Pro, Fuzhou 350007, Peoples R China
来源：
SURFACE & COATINGS TECHNOLOGY | 2017年 / 317卷
基金：
中国国家自然科学基金;
关键词：
Graphene oxide; Hydroxyapatite; Magnesium alloy; Micro-arc oxidation; Composite coating; NANOSTRUCTURED FLUORIDATED HYDROXYAPATITE; GRAPHENE OXIDE; ELECTROPHORETIC DEPOSITION; BIOMEDICAL APPLICATIONS; SURFACE; BEHAVIOR; CALCIUM; NANOCOMPOSITES; RESISTANCE; IMPEDANCE;
D O I：
10.1016/j.surfcoat.2017.03.034
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A biodegradable hydroxyapatite/graphene oxide bio-composite (HA/GO) coating has been fabricated on magnesium (Mg) alloy by a convenient one-step method of micro-arc oxidation (MAO) for biodegradable implants. The microstructure and phase constituents of the obtained powders and coatings were characterized by XRD, SEM, TEM, FT-IR, XPS and the corrosion resistance in vitro has been investigated by electrochemical measurements in simulated body fluid (SBF). The results suggested that HA/GO powder has been successfully prepared and filled into the discharging pores of the coating during MAO process. The electrochemical measurements in SBF indicated that the corrosion current of Mg substrate has been significantly decreased by the HA/GO coating. Furthermore the EIS measurement suggested that the HA/GO coating more effectively inhibited the Mg substrate from corrosion compared to pure MAO coating. These results suggested that HA/GO coating on Mg alloy could be a promising candidate for biomedical application. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：125 / 133
页数：9
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