Evolution of the magnesium incorporated amorphous calcium phosphate to nano-crystallized hydroxyapatite in alkaline solution

被引：29

作者：

Zhang, Xiao-Juan ^{[1
]}

Lin, Dong-Yang ^{[1
]}

Yan, Xiao-Hui ^{[1
]}

Wang, Xiao-Xiang ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China

来源：

JOURNAL OF CRYSTAL GROWTH | 2011年 / 336卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Amorphous calcium phosphate; Nano-particle; Electrochemical deposition; Nano-crystalline; Hydroxyapatite; OCTACALCIUM PHOSPHATE; ELECTROLYTE-SOLUTIONS; PHASE-TRANSFORMATION; CLUSTER; GROWTH; PRECIPITATION; MORPHOLOGY; ZEBRAFISH; BONE;

D O I：

10.1016/j.jcrysgro.2011.09.039

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

A homogeneous amorphous calcium phosphate (ACP) coating containing magnesium was achieved on titanium substrates by electrochemical deposition (ECD). Its amorphous structure is confirmed by transmission electron microscope (TEM) together with grazing reflection absorption infrared spectroscopy (IR) spectrometer. In the images of high-resolution transmission electron microscope (HRTEM), the ACP spheres are assembled by nano-particles with the diameter of 5-10 nm. In the alkaline environment, nucleation of hydroxyapatite (HAP) occurs on the surfaces of ACP spheres. By consuming the Ca and PO4 ions inside the ACP spheres, the HAP nuclei grow outward. Confirmed by TEM, the ACP spheres converse to hollow HAP spheres composed of HAP nano-needles. The coating is finally constructed by the HAP nano-needles, which are themselves aggregated by numerous nano-particles. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：60 / 66

页数：7

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