Titanium materials in various industries
Titanium and titanium alloys have many excellent properties such as lightweight, high strength, high heat resistance and corrosion resistance. They are honored as "the future metal" and are promising new structural materials. Titanium and titanium alloys not only have very important applications in aviation and aerospace industries, but also have been widely used in various industrial sectors such as chemical industry, petroleum, light industry, metallurgy and power generation.
Titanium metal in most aqueous solutions, can generate passivation oxide film on the surface, therefore, titanium in acidic, alkaline, neutral brine solution and oxidation medium has good stability, than the current stainless steel and other Corrosion resistance of non-ferrous metal are good. However, titanium can be corroded in this medium if it continuously dissolves the titanium surface oxide film in some medium. For example, titanium is corroded in hydrochloric acid, concentrated or hot sulfuric acid, hydrochloric acid, and phosphoric acid because these solutions dissolve the titanium surface oxide film. If oxidants or some metal ions are in addition to these solutions, the titanium oxide film will be protected and the stability of titanium will increase.
1. Chemical industry Titanium in various acids, alkali, salt medium, in addition to the above four kinds of inorganic acids and highly corrosive aluminum chloride, all has good stability.Therefore, titanium is the chemical industry excellent For instance, the use of titanium metal anodes and titanium wet chlorine gas chillers in the chlor-alkali industry, which received good economic results, has been hailed as a revolution in the chlor-alkali industry.
2. Petroleum Industry: Titanium has very good stability among organic compounds except for the five organic acids (formic acid, acetic acid, oxalic acid, trichloroacetic acid and trifluoroacetic acid) at higher temperatures. Therefore, titanium is Oil refining and petrochemical excellent structural materials, can be utilized to make make a variety of heat exchangers, reactors, high pressure vessels and distillation towers.
3. Metallurgical Industry: Titanium is an active metal with good gettering performance. It is a very good degassing agent in the steelmaking industry. It can combine the oxygen and nitrogen precipitated by the steel during cooling. Adding a small amount of titanium (<0.1%) to steel makes the steel tough and flexible. Titanium is also an essential alloy additive in industries such as steel making and aluminum smelting. Titanium has superconductivity, is a conventional superconducting material. In addition, titanium in acidic solution containing metal ions with excellent stability, so titanium in the hydrometallurgical industry, such as copper, nickel, cobalt, manganese and other non-ferrous metal electrolysis production, has a very wide range of applications.
4. Paper and textile industry
Titanium dioxide chlorine dioxide, chlorite, chlorite and other bleach has a special anti-corrosion properties. Therefore, titanium in textile printing and dyeing industry, paper industry bleaching equipment has an important application. For example, sub-bleach made of titanium work very well. At the same time, there are other industries such as synthetic fibers for spinneret.
5. Fertilizer industry
Urea is an eminent chemical fertilizer. Urea, ammonia, ammonium carbamate and their mixture are highly corrosive under high temperature and high pressure in the production process. The service life of equipment is greatly increased after titanium is used instead of stainless steel, and the maintenance time is greatly reduced. Therefore, main equipment used in urea production currently uses titanium.
6. Desalination and shipbuilding industry
The ability of titanium to resist seawater corrosion is preferable to all other metals, and titanium is exceptionally stable in both static and high-velocity seawater. Therefore, titanium is perfect for desalination plants. Titanium in the field of the number of applications will be growing. Titanium has strong resistance to seawater and ocean air corrosion, and its strength and light weight are ideal organizational materials for the shipbuilding industry. It has been widely used in many parts of numerous ships and deep-water submarines.
7. Power Industry
Titanium has good stability in many corrosive hot water containing chloride, sulfides, etc. Therefore. Titanium has been widely used as a cooling pipe for heat exchangers in thermal power plants. With thin-walled titanium tube instead of copper-nickel alloy tube, not only greatly improve the service life, but also greatly reduce the maintenance time, the monetary effect is very significant.
Other aspects
The remarkable characteristic of titanium City corrosion resistance, which is attributable to its strong affinity for oxygen and can produce a layer of dense oxide film on its shows, can protect the titanium from the media corrosion. Titanium can resist human corrosion. And harmless to the human body. So it can be commonly used in medical and pharmaceutical industry.
