Titanium aluminum is a silver-white metal, it has many excellent properties. Titanium has a density of 4.54g / cm3, 43% lighter than steel, slightly heavier than the prestigious light-metal magnesium. Its mechanical strength is about the same as that of steel, twice as large as aluminum and five times as large as magnesium. Titanium high temperature, the melting point of 1942K, higher than gold high 1000K, 500K higher than steel.Titanium is a chemically active metal. Heating with O2, N2, H2, S and halogen and other non-metallic role. However, at room temperature, the titanium surface is easy to generate a layer of very thin and dense oxide protective film, which can resist the action of strong acids and aqua regia and show strong corrosion resistance. Therefore, the general metal in the acid, alkali, salt solution becomes riddled with titanium but safe and sound.
Titanium aluminum alloy in thevacuum coating industry is also widely used, can be made of a certain percentage of the alloy target for magnetron sputtering coating raw materials. Titanium aluminum alloy vacuum deposition target has a variety of composition ratio, commonly used titanium atomic aluminum ratio (at%) 90: 10,80 :: 20,70: 30,50: 50,30: 70,20: 80,10: 90. Titanium-aluminum alloy can be produced by vacuum casting when the titanium atom content is greater than or equal to 50%. When the content of aluminum is relatively decreased, the titanium content can only be produced by powder metallurgy to achieve the target. Titanium aluminum alloy with a titanium atom of 80% or more can also be forged and rolled.