Tantalum applications
Tantalum has a series of excellent properties such as high melting point, low steam pressure, good cold working performance, high chemical stability, strong resistance to liquid metal corrosion, and high dielectric constant of surface oxide film. Therefore, tantalum has important applications in high-tech fields such as electronics, metallurgy, steel, chemical industry, cemented carbide, atomic energy, superconducting technology, automotive electronics, aerospace, medical health and scientific research.
50%-70% of the world's tantalum in the form of capacitor grade tantalum powder and tantalum wire is used to make tantalum capacitors. Since the surface of tantalum can form a dense and stable amorphous oxide film with high dielectric strength, it is easy to accurately and conveniently control the anodic oxidation process of capacitors, and the tantalum powder sintered block can obtain a large surface area in a small volume. Therefore, tantalum capacitors have high capacitance, low leakage current, low equivalent series resistance, good high and low temperature characteristics, long service life, excellent comprehensive performance, and other capacitors are difficult to match. It is widely used in communications (switches, mobile phones, pagers, fax machines, etc.), computers, automobiles, home and office appliances, instrumentation, aerospace, national defense and other industrial and technological sectors. Therefore, tantalum is an extremely versatile functional material.
Application of tantalum in alloys
Tantalum, as an alloying element, is rarely used in steel. Tantalum has a very high affinity with interstitial atoms in steel, such as C and N, and the compounds formed with them are very stable even at high temperatures.