Niobium - A Metal Which REPLACES GOLD!

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It's lovely stuff to anodize.

Lucky to get to work with Nb and Ta on daily basis.

Nb is very corrosion resistant, but tantalum is sublime in conditions that dissolve platinum and other PGMs.
Not such a good idea in reducing conditions--both hydride readily even in solution, and turn brittle as stale crisps!
 
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