Re: niobium - refractory metal ?

Atlas Shrugged wrote:

This is all that I've been able to find:
"THE REFRACTORY METALS include niobium (also known as columbium), tantalum, molybdenum, tungsten, and rhenium.

Thats pretty well all I have too. There doesn't SEEM to be any really nasty oxidation phenomena with it, like there is with moly, (MoO3 is particularly volatile, and Mo2O5 is a horrible purple dust) but it does still oxidise.

Steve
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