Tantalum is a very corrosion-resistant metal. Due to the high production cost, Mo, W, Hf and other elements can be added into it to form a kind of alloy while maintaining its corrosion resistance. Tantalum is resistant to nitric acid, hydrochloric acid, concentrated sulfuric acid and corrosion of liquid metal. Tantalum has good machinability and its mechanical properties at room temperature are similar to those of medium carbon.
Tantalum based alloy varieties are few, such as ta-10w, ta-8w-2hf, ta-10w-2.5hf-0.01c, etc. The purpose of alloying is to improve the mechanical properties of tantalum, but has a slight impact on its corrosion resistance. As a corrosion resistant alloy, tantalum alloy is mainly used in the lining of sulfuric acid systems, chlorine-containing and its derivatives systems, high purity nitric acid, ammonium nitrate and terephthalic acid containers, as well as the mixing blades.
At present, the application of tantalum-niobium new materials in the related high-tech industries include electronics, precision ceramics and precision glass industry. Electro-acousto-optic devices; Cemented carbide, aerospace and electronic energy industries; Biomedical engineering; Superconducting industry; Special steel and other industries.
Tantalum and niobium are very important in electronic industry, chemical industry, special alloy, vacuum technology and advanced technology. Electrolytic capacitors made of tantalum metal in the electronic industry are characterized by large capacitance, small leakage current, good stability, high reliability, good voltage resistance, long service life and small volume. A large number of national defense, aviation, aerospace, electronic computers, high-grade civil electrical appliances and all kinds of electronic instruments in the electronic circuit.
