Tantalum has a high melting point, low vapor pressure, good cold working performance, high chemical stability. Liquid metal corrosion resistance, surface oxide film dielectric constant and a series of excellent properties. Therefore, tantalum in electronics, metallurgy, iron and steel, chemical industry, cemented carbide, atomic energy, superconductivity technology, automotive electronics, aerospace, health care and scientific research and other high-tech fields have important applications.
The world's 50-70% of tantalum in the form of capacitor-grade tantalum powder and tantalum wire for the production of tantalum capacitors. Because the surface of tantalum can form a dense and stable, high dielectric strength amorphous oxide film, easy to accurately and conveniently control the capacitor's anodic oxidation process, while tantalum powder sintered block can be in a very small volume to obtain a large surface area, so the tantalum capacitor apparatus has a high capacitance, leakage current is small, the equivalent series resistance is low, high and low temperature characteristics of the good, long service life, the overall performance of the excellent, it is difficult for other capacitors to match, it is widely used in communications (communication), health and scientific research. It is widely used in communications (switches, cell phones, pagers, fax machines, etc.), computers, automobiles, home and office appliances, instruments and meters, aerospace, defense and military industries and other industrial and scientific sectors. Therefore, tantalum is an extremely versatile functional material.
