Dual layer inorganic coating on magnesium for delaying the biodegradation for bone fixation implants

被引：18
作者：
Alabbasi, Alyaa [1 ]
Kannan, M. Bobby [1 ]
Blawert, C. [2 ]
机构：
[1] James Cook Univ, Sch Engn & Phys Sci, Biomat & Engn Mat BEM Lab, Townsville, Qld 4811, Australia
[2] Zentrum Mat & Kustenforschung GmbH, Helmholtz Zentrum Geesthacht, Inst Mat Res, D-21502 Geesthacht, Germany
来源：
MATERIALS LETTERS | 2014年 / 124卷
关键词：
Magnesium; Biomaterials; Calcium phosphate; Plasma electrolytic oxidation; Degradation; CALCIUM-PHOSPHATE; ALLOY; BEHAVIOR;
D O I：
10.1016/j.matlet.2014.03.094
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, a dual layer inorganic coating was formed on a pure magnesium metal using electrochemical methods to delay the biodegradation of the metal for potential bone fixation implant applications. Firstly, a layer of silicate-based coating was formed on the base metal using the plasma electrolytic oxidation (PEO) method. A second layer of calcium phosphate (Cap) was formed on the PEO coating using the electrodeposition method. in vitro electrochemical degradation testings showed that the double layer coating (PEO-CaP) has significantly improved the initial degradation resistance of the metal. Localized degradation was not evident on the PEO-CaP coated metal even after 72 h exposure to simulated body fluid (SBF). (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：188 / 191
页数：4
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