Abstract
The features of the anodic plasma electrolytic treatment of commercial titanium in an aqueous ammonium chloride solution with ammonia and glycerol additions are investigated. It is revealed that the modified layer comprises an external TiO2 or TiO layer with micropores of up to 100 nm and a diffusion sublayer after nitriding in the solution with the ammonia addition. It is ascertained that the anodic dissolution of the titanium alloy dominates over its oxidation at treatment voltages reaching 210 V and an ammonium chloride concentration of 100 g/L. This effect is accompanied by a decrease in the sample mass. The sample mass grows due to an increase in the oxide layer exceeding the dissolution losses at higher voltages and ammonium chloride concentrations. It is shown that the corrosion current density in Ringer’s solution can be decreased after commercial titanium is treated in the ammonium chloride and glycerol solution.
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