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41 Nb Niobium

Transition metal, mass: 92.906 u, 1 stable isotope (93), abundance rank (earth/space): 34/48

Click image to magnify. Ultrapure niobium bead, slightly oxidized. Original size in cm: 0.6 x 0.6
Niobium Niobium bead
Niobium is a rare, soft, grey metal, which, when exposed to air, quickly forms a protective oxide layer. It is not used widely, one application is as additive to superalloys, which have to withstand very high temperatures. Furthermore, it is sometimes used as mint metal for special coinages, because it can be anodized to form a colored oxide layer. The thickness of the oxide layer determines its color.

25 Euro coin 'Renewable Energy'
The Austrian 25 Euro bimetal coin 'Renewable Energy'. The inside is anodized niobium, the outer ring is made of silver.


Creative Commons License The images are licensed under a Creative Commons Attribution 3.0 Unported License, unless otherwise noted. Attribution by linking to the according element page.


Page last changed on June 09. 2010

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