Titanium is a very corrosion-resistant metal. However, the thermodynamic data of titanium show that titanium is a very unstable metal. If titanium can be dissolved to form Ti2+, its standard electrode potential is very low (-1.63V), and its surface is always covered with an oxide film
Titanium is an element with an atomic number of 22 in the periodic table. It is a subgroup element of the fourth period, that is, the IVB flag. In addition to titanium, this group of elements also includes zirconium and hafnium. Its common feature is that it has a high melting point and is on its surface at room temperature. A stable oxide film is formed.
In 1956, McGevellen made a strict distinction between titanium alloys based on the difference in annealing state, and delineated different types, mainly divided into three categories: α, β and α+β and other three types of titanium alloys.
