Effect of suspension stability on electrophoretic deposition of hydroxyapatite coatings

被引：114

作者：

Xiao, Xiu Feng ^{[1
]}

Liu, Rong Fang ^{[1
]}

机构：

[1] Fujian Normal Univ, Coll Chem & Mat Sci, Fuzhou 350007, Peoples R China

来源：

MATERIALS LETTERS | 2006年 / 60卷 / 21-22期

关键词：

electrophoretic deposition; hydroxyapatite; dispersant; coatings; triethanolamine;

D O I：

10.1016/j.matlet.2006.01.048

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to prepare densely packed hydroxyapatite (HAp) coating onto titanium substrate through electrophoretic deposition (EPD), it is highly desirable to produce stable HAp suspension. In this study, nano-HAp particles prepared by hydrothermal method were employed for EPD. The stability of HAp suspensions in various primary aliphatic alcohols (C1-C4) has been studied by measurement of sedimentation tests and electricity conductivity. Furthermore, to make a stable suspension, a dispersant [triethanolamine (TEA)] was added. Maximum stability is observed for the suspension containing n-butanol as the dispersion medium and TEA as the dispersant. The HAp coating deposited in this suspension was observed to be a crack-free and densely packed coating through scanning electron microscopy examination. The shear strength and nano-indention tests have confirmed the good adhesion between the coating and the substrate. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：2627 / 2632

页数：6

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