Features:
1, first of all, the titanium target can be made in many colors, such as titanium ash, gun ash, black, imitation gold, brown, blue, purple and so on.
2. Secondly, titanium has very good adhesion, and also has very good adhesion to ceramic and glass substrates, so titanium can be used as the base film material of membrane materials with poor adhesion. Titanium can also be used as a material for thin film resistors or thin film capacitors.
3. Titanium has a strong adsorption capacity for active gases. The fresh Ti film evaporated on the mercury wall forms a surface with high adsorption capacity and excellent gettering performance, which can react with almost all gases except inert gases. This property makes Ti widely used as getter in ultra-high vacuum pumping system, such as titanium sublimation pump and sputtering ion pump.
4, corrosion resistance, titanium is a very active metal, its equilibrium potential is very low, and it tends to corrode in thermodynamic medium. But in fact, titanium is very stable in many media, for example, titanium is corrosion-resistant in oxidizing, neutral and weakly reducing media.
Extended data:
Titanium alloy is an alloy based on titanium and added with other elements. There are two kinds of isomorphic crystals of titanium: α titanium with dense hexagonal structure below 882℃ and β titanium with body-centered cubic structure above 882℃.
Oxygen, nitrogen, carbon and hydrogen are the main impurities in titanium alloys. Oxygen and nitrogen have great solubility in α phase, which obviously strengthens titanium alloy, but reduces plasticity. Generally speaking, the contents of oxygen and nitrogen in titanium are below 0. 15 ~ 0.2% and 0.04 ~ 0.05% respectively.
The solubility of hydrogen in α phase is very small, and too much hydrogen dissolved in titanium alloy will produce hydride, which will make the alloy brittle. The hydrogen content in titanium alloy is generally controlled below 0.0 15%. The dissolution of hydrogen in titanium is reversible and can be removed by vacuum annealing.
Titanium alloy works in humid atmosphere and seawater medium, and its corrosion resistance is far superior to that of stainless steel. Especially strong resistance to pitting corrosion, acid corrosion and stress corrosion; Excellent corrosion resistance to alkali, chloride, chlorine, nitric acid, sulfuric acid and other organic substances. However, the corrosion resistance of titanium to reducing oxygen and chromium salt medium is poor.
Baidu encyclopedia-titanium alloy