Niobium Yellow 10mm Metal Cube

Item #81649

Collecting elements is a fun way to learn about chemistry and nature in general.  Now you can own yellow Niobium in a 10mm cube!
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Description
The coolest thing about Niobium is how you can color it simply by oxidizing a microscopically thin layer.  Immersing a piece of niobium in an electrolytic bath and passing a current between it and a sacrificial anode.  At the cathode end, niobium rapidly oxidizes with the voltage determining how deep the oxidation layer goes.  The colors of the rainbow appear after you go past 12 volts.

Now you can own a 10mm cube of yellow Niobium, with a weight of 8.6 +/- .1g.

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Brand: Luciteria
Astronomy Discover