Tantalum alloy formed by adding a certain amount of tungsten to tantalum. TaW binary alloy of tantalum and tungsten is an infinite solid solution. At 200℃, the reliability of ta-w alloy in acid and neutral medium is even higher than that of gold and foil. Tantalum tungsten alloy quality is good, tantalum basic in other environments can quickly form a layer of surface oxide film and carefully coated on its metal matrix, the oxide film is thin and very fine, to the basic all media are impermeable, and if the damage, can immediately get better.
Due to the excellent protective film like this one, tantalum has superior corrosion resistance. Except for fluorine, hydrofluoric acid, acid sol containing fluorine ion, fuming nitric acid and strong base, tantalum will not be corroded in most media. The following table compares the corrosion resistance of tantalum with that of titanium and zirconium.
Tantalum can be used to make various ductile alloys with high melting point. So many alloys can be used as materials for processing superhard metals, and for making superalloys for jet engines, chemical test equipment, nuclear reactors, and temporary.
After deduction of non-profit, the gross profit reflects the boom of the industry, and the continuous repair of the financial indicators in one quarter: the annual net profit returned to the mother is %, but after deduction of non-profit is %, we find that the main reason is a big change in the profit structure: sponge titanium profit contribution strengthened, non-recurrent profit and loss significantly reduced tantalum has a high ductibility, can be stretched into silk. So many tantalum wires are used to gasify all kinds of metals, like aluminum.
Tantalum tungsten alloy quality is good, tantalum is a kind of steel gray cast nonferrous metal, because it is a special many strange characteristics, and is also said to be "VIP metal", and because it will have a general application field, therefore, known as the "metal kingdom" versatile. Tantalum has good mechanical properties, the most stable chemical properties and a large dielectric constant of the surface oxide film.
