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Glass/ceramic coatings for implants

United States Patent

September 6, 2011
View the Complete Patent at the US Patent & Trademark Office
Lawrence Berkeley National Laboratory - Visit the Technology Transfer and Intellectual Property Management Department Website
Glass coatings on metals including Ti, Ti6A14V and CrCo were prepared for use as implants. The composition of the glasses was tailored to match the thermal expansion of the substrate metal. By controlling the firing atmosphere, time, and temperature, it was possible to control the reactivity between the glass and the alloy and to fabricate coatings (25-150 .mu.m thick) with excellent adhesion to the substrate. The optimum firing temperatures ranged between 800 and C. at times up to 1 min in air or 15 min in N.sub.2. The same basic technique was used to create multilayered coatings with concentration gradients of hydroxyapatite (HA) particles and SiO.sub.2.
Tomsia; Antoni P. (Pinole, CA), Saiz; Eduardo (Berkeley, CA), Gomez-Vega; Jose M. (Nagoya, JP), Marshall; Sally J. (Larkspur, CA), Marshall; Grayson W. (Larkspur, CA)
The Regents of the University of California (Oakland, CA)
09/ 845,597
April 30, 2001
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under Grant (Contract) No. DE-AC03-76F00098 awarded by The United States Department of Energy. The United States Government has certain rights to this invention.