Tantalum has a series of excellent properties, such as high melting point, low vapor pressure, good cold processing performance, high chemical stability, as well as strong resistance to liquid metal corrosion, etc., it has important applications in high and new technology fields such as electronics, metallurgy, superconducting technology, automobile electronics, aerospace, medical treatment, and scientific research. The following is a brief introduction to the superb performances of tantalum in the electronics and aerospace industries.
In the electronic industry, tantalum is mainly used as tantalum capacitors, which are usually used in the form of capacitor-grade tantalum powder, tantalum wire, and tantalum foil. A tantalum capacitor is one of the indispensable electronic components of radar, aerospace aircraft and missiles, and it is widely used for civil use, such as mobile communication, electronic equipment, and instruments.
As the specific surface area of tantalum powder is large, the dielectric constant of the thin film of the dielectric body is large, so the capacitance is large, then the small large-capacity capacitors can be made. The electrolytic capacitors made of tantalum have the advantages of small size, lightweight, good reliability, wide operating temperature range, and long service life.
Tantalum electrolytic capacitors can be classified into solid electrolytic capacitors and liquid electrolytic capacitors, and they are mainly divided into two anode types: foil anode and sintered anode. Tantalum wire is used as the anode lead for both capacitors.
With the development of the electronic industry, the miniaturization and high reliability of tantalum capacitors are becoming increasingly strict. At present, the international commercial specific capacity of tantalum powder has reached more than 150,000 mu.F•V/g, and the laboratory has reached 30,000 mu.F•V/g.
Tantalum is also used as a material for electron tubes. Due to its high melting point, low real gas pressure, good processing performance, small linear expansion coefficient, and good inspiratory property, tantalum is a good material for launching tube and high-power electron tube parts.
Besides the above, tantalum target is an important material for magnetron sputtering coating of electronic chips due to its high chemical stability. You may check out more information at the specialized target website.
In addition to a large number of tantalum capacitors used in the aerospace industry, tantalum is also mainly used in high-temperature alloy and tantalum matrix heat-resistant alloy in the aerospace industry, especially in engines. High-performance alloys such as superalloy, corrosion-resistant alloy, and wear-resistant alloy can be made by adding tantalum to nickel base, cobalt base, and iron-base alloys.
Compared with niobium superalloy, tantalum superalloy has superior performance, higher heat resistance, and greater stress load. These alloys are mainly used as heat-resistant and high-strength structural materials for supersonic aircraft, solid propellant rockets, and missiles, as well as parts for control and adjustment devices. For example, the combustion chamber of the American Ajina Spacecraft is made of ta-10w alloy, and the flame temperature is very high (up to 2760℃) when its cover is small.
The aerospace industry is the second largest user of niobium and tantalum. Niobium and tantalum alloys, especially their superalloys and heat-resistant alloys based on them, are indispensable supporting materials for hot components of aircraft jet engines, rockets, spacecraft, and other vehicles.
Stanford Advanced Materials supplies high-quality tantalum products to meet our customers’ R&D and production needs. Please visit https://www.samaterials.com/ for more information.