Nano Archive

Effect of suspension stability on electrophoretic deposition of hydroxyapatite coatings

Xiao, Xiu Feng and Liu, Rong Fang (2006) Effect of suspension stability on electrophoretic deposition of hydroxyapatite coatings. Materials Letters, 60 (21-22). 2627 - 2632.

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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.

Item Type:Article
Uncontrolled Keywords:Electrophoretic deposition; Hydroxyapatite; Dispersant; Coatings; Triethanolamine
Subjects:Material Science > Nanofabrication processes and tools
Material Science > Nanostructured materials
ID Code:6788
Deposited By:SPI
Deposited On:18 Jan 2010 09:47
Last Modified:18 Jan 2010 09:47

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