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A Multilayer Approach to Fabricate Bioactive Glass Coatings on Ti Alloys

Published online by Cambridge University Press:  15 February 2011

J.M. Gomez-Vega
Affiliation:
Materials Science Division. Lawrence Berkeley National Laboratory. Berkeley CA 94720. USA
E. Saiz
Affiliation:
Materials Science Division. Lawrence Berkeley National Laboratory. Berkeley CA 94720. USA
A.P. Tomsia
Affiliation:
Materials Science Division. Lawrence Berkeley National Laboratory. Berkeley CA 94720. USA
G.W. Marshall
Affiliation:
Department of Restorative Dentistry. University of California. San Francisco CA 94143. USA
S.J. Marshall
Affiliation:
Department of Restorative Dentistry. University of California. San Francisco CA 94143. USA
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Abstract

Glasses in the system Si-Ca-Na-Mg-P-K-O with thermal expansions coefficients close to that of Ti6AI4V were used to coat the titanium alloy by a simple enameling technique. Firings were done in air at temperatures between 800 and 840°C and times up to 1 minute. Graded compositions were obtained by firing multilayered glass coatings. Hydroxyapatite (HA) particles were mixed with the glass powder and the mixture was placed on the outer surface of the coatings to render them more bioactive. Coatings with excellent adhesion to the substrate and able to form apatite when immersed in a simulated body fluid (SBF) can be fabricated by this methodology.

Type
Research Article
Copyright
Copyright © Materials Research Society 1999

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