Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/86364
Title: Galvanostatic pulse deposition of hydroxyapatite for adhesion to titanium for biomedical purposes
Authors: Blackwood, D.J. 
Seah, K.H.W. 
Keywords: Adhesion
Electrochemical pulse deposition
Hydroxyapatite
Titanium
Issue Date: 10-May-2010
Citation: Blackwood, D.J., Seah, K.H.W. (2010-05-10). Galvanostatic pulse deposition of hydroxyapatite for adhesion to titanium for biomedical purposes. Materials Science and Engineering C 30 (4) : 561-565. ScholarBank@NUS Repository.
Abstract: Calcium phosphate coatings, in particular synthetic hydroxyapatite, are applied to the surfaces of titanium and its alloys so as to improve the biocompatibility and biological performance. Currently, plasma spraying is the clinically accepted technique for the deposition of calcium phosphate onto titanium. Electrochemical cathodic deposition is emerging as an alternative technique due to it being a nonline-of-sight technique. In this present study, it is demonstrated that increased thickness, crystallinity and adhesion of calcium phosphate coating on titanium is achieved by periodic pulsed low current densities compared to a constant current deposition method. It is believed that the "off" part of the AC deposition cycle gives the calcium and phosphate ions in the bulk solution sufficient time to diffuse to the titanium's surface maintaining more favourable conditions for HA growth. Unfortunately, although pulsed deposition at high current densities is able to produce thick coatings it cannot avoid problems associated with hydrogen bubbles and thus both AC and DC films deposited at high current densities have low crystallinity and poor adhesion. © 2010 Elsevier B.V. All rights reserved.
Source Title: Materials Science and Engineering C
URI: http://scholarbank.nus.edu.sg/handle/10635/86364
ISSN: 09284931
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

14
checked on Feb 27, 2018

WEB OF SCIENCETM
Citations

14
checked on Apr 23, 2018

Page view(s)

25
checked on May 11, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.