It has been found for a long time that when the temperature drops to near absolute zero, the chemical properties of some substances will suddenly change into a "superconductor" with almost no resistance.

Niobium is a gray white metal with a melting point of 2468 ℃, a boiling point of 4742 ℃, and a density of 8.57g/cm3. Niobium is a gray metal with luster, which has paramagnetism and belongs to 5 groups of periodic table.

Niobium is a kind of metal element. Chemical symbol Nb, atomic number 41, atomic weight 92.90638, belongs to the family VB of periodic system. In 1801, British C.

Tantalum also has excellent chemical properties and high corrosion resistance.

Tantalum TA, a metal element, occurs mainly in tantalite and coexists with niobium.

As we all know, the development trend of target material technology is closely related to the development trend of film technology in downstream application industry.