Anodizing of titanium alloy in phosphoric acid system

　　Common types of electrolytes include chromic acid and chromate electrolyte, phosphate electrolyte, oxalic acid electrolyte, sulfuric acid and sulfate electrolyte, and fluoride electrolyte. Next, we will take you to understand the treatment methods of titanium alloy anodizing in phosphoric acid system.

Alkaline silicic acid electrolyte and other studies show that anodic oxidation of titanium and titanium alloy can form oxide film with thickness of hundreds to thousands of nanometers. The main component of the oxide film is titanium oxide. The thin film material composed of this component is transparent, and the strong reflection and refraction of light can show brilliant luster.

The thickness of the oxide film changes with the voltage. With the increase of the voltage, the thickness of the film also increases, showing different colors. The surface characteristics are improved and the appearance becomes beautiful, which plays a very good decorative role.

Although anodizing has many advantages, the composition of the electrolyte for titanium alloy anodizing is relatively complex and there are many technological processes, which can easily lead to the problems of uneven color, discoloration and poor wear resistance of anodic oxidation film.