Properties of Titanium Oxide Films Deposited by the Sol-Gel Technique

FAVILLA, P.C.; ALTERACH, M.A.; MARIO ROBERTO ROSENBERGER; ARES, A.E.; SCHVEZOV, C. E.

New Orleans. Lousiana. USA

Conferencia; 2008 TMS Annual Meeting & Exhibition, Symposium: General Abstracts: Structural Materials Division; 2008

TMS Society

In the development of new material for use in mechanical heart valves there are conditions that must be satisfied. In particular for the present report the focus is in good surface quality, mechanical and corrosion resistance and biocompatibility for the intended period of use. The material object of this investigation is titanium oxide deposited on a substrate of  Ti-6Al-4V. The oxide films were deposited by the sol-gel technique by dip-coating, withdrawing at a constant velocity, drying and thermal treatment. The films were characterized by optical and scanning microscopy observations and test of adhesion. The adhesion of the films were determined as a function of the number of layers deposited and also in relation with the surface morphology. The results show that the mono-layer films have much better adhesion than the multilayer films. The films show cracks in the border of the samples which number density was reduced using a 6 months aged sol and covering the the border with an acrylic resin.