Electrochemical study of the in vitro degradation of plasma-sprayed hydroxyapatite/bioactive glass composite coatings after heat treatment

doi:10.1016/j.electacta.2004.08.001

中山醫學大學機構典藏 CSMUIR > 口腔醫學院 > 牙醫學系暨碩士班 > 期刊論文 > Item 310902500/18281

Please use this identifier to cite or link to this item: https://ir.csmu.edu.tw:8080/ir/handle/310902500/18281

Title:	Electrochemical study of the in vitro degradation of plasma-sprayed hydroxyapatite/bioactive glass composite coatings after heat treatment
Authors:	Chen, Chen C.C.;Huang, T.H.;Kao, C.T.;Ding, S.J.
Keywords:	Bioactive glass;Electrochemical test;Heat treatment;Hydroxyapatite;Plasma spray
Date:	2004
Issue Date:	2017-08-09T04:44:41Z (UTC)
ISSN:	134686
Abstract:	Hydroxyapatite (HA)-coated implants plasma-sprayed on metallic substrates have been widely used in load-bearing applications. In the present work, the in vitro behaviors of bioactive glass-containing HA coatings with post-deposition heat treatment in a simulated body fluid has been performed by means of electrochemical techniques. Annealing of the coatings in air at 650 °C led to recrystallization of amorphous calcium phosphate and effectively increased the conversion of non-apatite phases into apatite. The heat treatment also resulted in a reduction of layer defects associated with plasma-sprayed coatings without adversely affecting bond strength of the coatings. Moreover, the heat-treated coatings significantly increased the corrosion potential and polarization resistance value by approximately two times as compared to untreated samples. Improved corrosion resistance could be attributed to reduction of layer defects and enhancement of coating crystallinity. © 2004 Elsevier Ltd. All rights reserved.
URI:	http://dx.doi.org/10.1016/j.electacta.2004.08.001 https://www.scopus.com/inward/record.uri?eid=2-s2.0-9644296034&doi=10.1016%2fj.electacta.2004.08.001&partnerID=40&md5=3137e73b5654b1e451d2546f576c4412 https://ir.csmu.edu.tw:8080/ir/handle/310902500/18281
Relation:	Electrochimica Acta 50(4) ,1023-1029
Appears in Collections:	[牙醫學系暨碩士班] 期刊論文

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