Bharati, Sanghamitra and Soundrapandian, Chidambaram and Basu, Debabrata and Datta, Someswar (2009) Studies on a novel bioactive glass and composite coating with hydroxyapatite on titanium based alloys: Effect of gamma-sterilization on coating. Journal of the European Ceramic Society, 29 (12). pp. 2527-2535. ISSN 0955-2219

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A novel silicate based bioactive glass coating composition containing B(2)O(3) and TiO(2) having matching thermal properties with that of Ti(6)Al(4) V implants was developed and characterized. A conventional vitreous enamelling technique was used for coating small flat surface and curved surface of small rods. Hydroxyapatite (HAp) micro and nano-crystalline particles were used to prepare bioactive glass-HAp composite coating. Scratch testing was used to study the coating adhesion and its fracture behaviour under simulated conditions. As observed from scratch testing results, adhesion strength of the coating improved from 21 N normal load to 27 N and 32 N on addition of micro-HAp and nano HAp powder, respectively, to bioactive glass matrix. Further, sterilization of the coated samples with 25 kGy gamma irradiation substantially enhanced the adhesion of glass coating and HAp-composite coating. (C) 2009 Elsevier Ltd. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Composites; Glass; Apatite; Biomedical applications; Mechanical properties
Subjects: Glass
Depositing User: Ashok K Podder
Date Deposited: 22 Feb 2012 05:35
Last Modified: 22 Feb 2012 05:35

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