What is a suitable boat to evaporate Niobium?

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Temenuga Hristova-Vasileva

What method do you use to evaporate material with melting point of ~3000 K using a boat?.. :-)

I guess Nb could be evaporated by some sort of laser (plasma) technique...

Syed Zameer Abbas

Try electron beam evaporation.

Manohar Sehgal

No doubt, W with much higher mt(3420C) looks to be most suit able,but it has ONE LIMITATION . It ATTACKS Nb near ITS MPT(2468C).The use of Mo(mp-2893C) or Ta( mpt 2896C) boats is recommended as Nb attacks NEITHER Mo nor Ta though their mps are lower than W YET sufficiently higher than Nb(2468C).