Preparation and characterization of silicon-substituted hydroxyapatite coating by a biomimetic process on titanium substrate

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	Preparation and characterization of silicon-substituted hydroxyapatite coating by a biomimetic process on titanium substrate
	E. L. Zhang; C. M. Zou; S. Y. Zeng
	2009
发表期刊	Surface & Coatings Technology
ISSN	0257-8972
卷号	203 期号:8 页码:1075-1080
摘要	A biomimetic method has been used to prepare silicon-substituted hydroxyapatite coatings on titanium substrates. The surface structures of the coatings were characterized by X-ray diffraction, X-ray photoelectron spectroscopy (XPS) and Fourier transformed infrared spectroscopy (FTIR). Si substituted hydroxyapatite (Si-HA) coatings with different Si contents were deposited successfully on the titanium substrate by immersing the pretreated titanium substrate into silicon containing supersaturated solutions (SSS) with different SiO(3)(2-) concentrations. The pretreatment of the Ti substrate in a mixed alkaline (NaOH + Ca(OH(2))) followed by a heat treatment produced a 3D porous surface structure with rutile and CaTiO(3) as main phases, which contributed mainly to the fast precipitation and deposition of Si-HA. FTIR results showed that Si in the Si-HA coating existed in the form of SiO(4)(4-) groups. The cross-section microstructure was observed by scanning electronic microscopy and the shear strength was tested. The coating was about 5-10 mu m in thickness and no interval was observed at the interface between the coating and the substrate. Shear strength testing showed that Si-HA/Ti exhibited higher shear strength than HA/Ti due to the existence of the SiO(4)(4-) group in the coating. (C) 2008 Elsevier B.V. All rights reserved.
部门归属	[zhang, erlin] chinese acad sci, inst met res, shenyang 110016, peoples r china. [zou, chunming; zeng, songyan] harbin inst technol, sch mat sci & engn, harbin 150001, peoples r china.;zhang, el (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;erlin.zhang@imr.ac.cn
关键词	Biomimetic Coating Silicon Hydroxyapatite Titanium Simulated Body-fluid Calcium-phosphate Apatite Formation Bond Strength Thin-films In-vitro Deposition Bioceramics Behavior Metal
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WOS记录号	WOS:000262573800022
引用统计	被引频次：52[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32531
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	E. L. Zhang,C. M. Zou,S. Y. Zeng. Preparation and characterization of silicon-substituted hydroxyapatite coating by a biomimetic process on titanium substrate[J]. Surface & Coatings Technology,2009,203(8):1075-1080.
APA	E. L. Zhang,C. M. Zou,&S. Y. Zeng.(2009).Preparation and characterization of silicon-substituted hydroxyapatite coating by a biomimetic process on titanium substrate.Surface & Coatings Technology,203(8),1075-1080.
MLA	E. L. Zhang,et al."Preparation and characterization of silicon-substituted hydroxyapatite coating by a biomimetic process on titanium substrate".Surface & Coatings Technology 203.8(2009):1075-1080.