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262749 Sigma-Aldrich

Niobium

powder, <250 μm, 99.8%

Synonym: Columbium

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Properties

assay   99.8%
form   powder
resistivity   13-16 μΩ-cm, 20°C
particle size   <250 μm
bp   4742 °C (lit.)
mp   2468 °C (lit.)
density   8.57 g/mL at 25 °C (lit.)
SMILES string   [Nb]
InChI   1S/Nb
InChI key   GUCVJGMIXFAOAE-UHFFFAOYSA-N
Safety & Documentation

Safety Information

RIDADR 
UN 1383 4.2/PG 1
WGK Germany 
-
RTECS 
QT9900000
Protocols & Articles

Articles

Self-Propagating Reactions Induced by Mechanical Alloying

Mechanical alloying is a “brute force” method of affecting alloying and chemical reactions. The mixture of reactant powders and several balls are placed in the milling jar of a high-energy ball mill,...
Prof. Laszlo Takacs
Material Matters 2007, 2.4, 21.
Keywords: Ceramics, Chemical reactions, Combustion, Diffraction, Exothermic, Mass spectrometry, Metal Science, Oxidations, Reductions, Size-exclusion chromatography, Thermite, X-Ray diffraction, transformation

Peer-Reviewed Papers
15

References

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262722 Niobium, powder, <45 μm, 99.8% trace metals basis

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