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Chemical Elements

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     75    

75 Re Rhenium

Transition metal, mass: 186.21 u, 1 stable isotope (185), but nearly twice as frequent is 187Re with a half-life of 4.12*1010 years. Abundance rank (earth/space): 79/79

Click image to magnify. Pure rhenium bead, arc melted, 21 grams. Original size in cm: 1.5 x 1.7. Measured radiation dose <0.05 μS/h.
Rhenium Large rhenium bead
Rhenium is a very rare, hard, heavy, silvery metal, which is relatively noble. In nature, it only occurs in compounds in low concentrations, which makes its extraction very laborious and expensive. Rhenium is used as additive in nickel-based superalloys, on which high demands in temperature and durability are made, like in aircraft turbines. Rhenium was the last stable element to be discovered (in 1925). The most important rhenium source is molybdenite.

Small rhenium bead Small rhenium bead
Small rhenium bead, about 1.5 grams. Original size in cm: 0.5 x 0.5

Rhenium bar
A sintered and pressed rhenium bar, 11 grams. Original size in cm: 0.34 x 0.44 x 3.5




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The images are licensed under a Creative Commons Attribution 3.0 Unported License, unless otherwise noted. Attribution by linking (outside of the internet credit with url) to the according element page.



 


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