columbium pentoxide
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Niobium — zirconium ← niobium → molybdenum V ↑ Nb ↓ Ta … Wikipedia
niobium processing — Introduction preparation of the ore for use in various products. Niobium (Nb) has a body centred cubic (bcc) crystal structure and a melting point of 2,468° C (4,474° F). Of the refractory metals, it has the lowest density and best… … Universalium
Mineral industry of Mozambique — The Mineral industry of Mozambique plays a significant role in the world’s production of aluminium, beryllium, and tantalum.[1] In 2006, Mozambique s share of the world s tantalum mine output amounted to 6%; beryllium, 5%; and aluminium, 2%.[1]… … Wikipedia
niobium — /nuy oh bee euhm/, n. Chem. a steel gray metallic element resembling tantalum in its chemical properties; becomes a superconductor below 9 K; used chiefly in alloy steels. Symbol: Nb; at. no.: 41; at. wt.: 92.906; sp. gr.: 8.4 at 20°C. [1835 45;… … Universalium
