76. Wear Resistance and Adherence of Tio2 Sol-Gel Thin Films,

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

Seatle

Congreso; 139º TMS Annual Meeting & Exhibition. TMS 2010; 2010

The wear resistance and adherence of TiO2 films was studied; the films were synthesized by thesol-gel dip-coating technique on a grade 5 titanium alloy. Monolayer and multilayer films weredeposited by varying: dip-coating velocity, aging time of sol and the heat treatment parameters.These process conditions had influence on the color (thickness) of the film and the cracks formation.The wear resistance was measured on a ball-on-flat machine using a rotating glass ball ascounterface. The worn films were evaluated by the size of the superficial scare, which can benoted by the change of color on the surface. The adherence was measured on a scratch testmachine and examined by optical microscope to determine the adherent critical load.The best wear resistance and adherence of the films was measured on a trilayer film fabricatedwith a heat treatment at 500ºC for 1h for each layer.