Oxydation anodique du titane en solution sulfurique : nature, épaisseur et indice de réfraction des films formés

DSA RuO2 / TiO2 Electrode Modeled by Ion Implantation: An In Situ Characterization by Photoacoustic and Photocurrent Spectroscopy

“…From in situ ellipsometric measurements (14,33), it is reasonable to assume that the thickness of oxide layers studied is between 30 and 200/L The absorption coefficient of vapor deposited TiO2 layers is reported (34) to be 104-10 s cm 1 at 350-300 nm; therefore, the penetration depth of the light in our experiments is always larger than the film thickness, and no saturation is expected. The anodically grown oxide layers were formed by stepping the potential from 0.9 to 5 V/SCE and the photoacoustic/photocurrent spectra were taken after a quasi-steady state was attained, generally after two to three days, when fluctuations with time of the observed "dark" current were small and random.…”

The effect of anodizing voltage on the electrical properties of Al–Ti composite oxide film on aluminum

“…Several results obtained in other electrolyte systems might be taken into account. For example, Arsov et al [11] reported that during the anodization of titanium in sulfuric acid, fully crystalline anatase was formed at voltages higher than 50 V, and Choi et al [12] found that the breakdown potential might be around 80 V in phosphoric acid. The increasing slopes of the two curves do not really present increscent formation rate of the oxides, but reveals the decrease in the effective surface area of etched aluminum foil with increasing thickness of the oxide film.…”

Electrochemical Micromachining of Titanium Through a Laser Patterned Oxide Film

“…18 Experiments were performed in an electrochemical cell containing 1 L of electrolyte solution. The electrolyte was prepared from analytical grade sulfuric acid 95-97% ͑pro analysis, Merck͒ and deionized water.…”

“…[19][20][21] The oxide film formed under these conditions appeared violet to the naked eye. Assuming a growth constant of 2.5 nm V Ϫ1 reported for titanium, 18 presents the ablation setup. The long pulse ͑250 ns͒ XeCl eximer laser from Lambda Physics ͑308 nm wavelength͒ emits a maximum fluence of 60 mJ cm Ϫ2 per pulse in a 2.2 ϫ 2.2 cm section.…”