𝔖 Bobbio Scriptorium
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Glass-based coatings for titanium implant alloys

✍ Scribed by Gomez-Vega, J. M. ;Saiz, E. ;Tomsia, A. P.

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
928 KB
Volume
46
Category
Article
ISSN
0021-9304

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✦ Synopsis

Glass coatings on Ti6Al4V were prepared using a simple enameling technique. The composition of the glasses was tailored to match the thermal expansion of Ti6Al4V. 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 m thick) with excellent adhesion to the substrate. The optimum firing temperatures ranged between 800 and 840°C at times up to 1 min in air or 15 min in N 2 . The same basic technique was used to prepare multilayered coatings with graded composition or with hydroxyapatite (HA) particles embedded in the outer layer. Some of these coatings presented excellent adhesion to the substrate and were able to form HA during in vitro tests in simulated body fluid.

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