Niobium is a metal in groupVB of the periodic table with atomic number 41, an atomic weight of 92.91, and a density of 8.4 Mg/m 3. Its melting point is 2468 C, and it boils at 3300 C. The electronic ...

China has mastered key technologies for the efficient utilization of niobium resources, enabling the economic development of large-scale niobium-rare earth deposits, industry newspaper China ...