Niobium (Nb)

Niobium (Nb)

Though most metallurgists refer to the metal as 'columbium' the name 'niobium' ([Kr]4d45s1) (CAS 7440-03-1) was officially adopted by chemical authorities in 1950 after 100 years of controversy. Niobium is steel-gray or silvery-white but takes on a bluish tint when exposed to air at room temperatures for extended periods. The metal's oxidation in air commences at 200°C. Niobium, when used in alloying, improves strength, and its superconductive properties are enhanced when combined with zirconium. 

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99.8% (4)
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Niobium powder, -325 mesh, 99.8% (metals basis) 
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo...
Niobium wire, 1.0mm (0.04in) dia, 99.8% (metals basis) 
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo...
Niobium foil, 0.25mm (0.01in) thick, annealed, 99.8% (metals basis) 
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo...