Formation mechanism of calcium phosphate coating on micro-arc oxidized magnesium

被引：35
作者：
Liu, G. Y. [1 ]
Hu, J. [1 ]
Ding, Z. K. [1 ]
Wang, C. [1 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2011年 / 130卷 / 03期
关键词：
Biomaterials; Coating; Crystal growth; Microstructure; SIMULATED BODY-FLUID; SELF-ASSEMBLED MONOLAYERS; CORROSION-RESISTANCE; IN-VITRO; HYDROXYAPATITE CRYSTALS; BIOMEDICAL APPLICATIONS; ALLOY; OXIDATION; APATITE; BONE;
D O I：
10.1016/j.matchemphys.2011.08.043
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A calcium phosphate coating was prepared on the surface of micro-arc oxidized magnesium by a chemical method. The microstructure evolution of the coating was characterized by X-ray diffraction, Fourier-transformed infrared spectroscopy and scanning electron microscopy. The results showed that Ca(10)(PO(4))(6)(OH)(2) (HA) was firstly formed on the surface of micro-arc oxidized magnesium, followed by flake-like CaHPO(4)center dot 2H(2)O (DCPD). The solution pH and Ca(2+) concentration had intense influence on the formation of calcium phosphate coating. Acidic Ca(2+) enrichment solution was favourable for HA formation on the surface of micro-arc oxidized magnesium. High concentration of HPO(4)(2-) and low concentration of Ca(2+) in acidic solution improved the formation of DCPD coating. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：1118 / 1124
页数：7
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