Niobium Powder

High Purity Nb Powder
CAS 7440-03-1

Product Product Code Order or Specifications
(2N) 99% Niobium Powder NB-M-02-P Contact American Elements
(3N) 99.9% Niobium Powder NB-M-03-P Contact American Elements
(4N) 99.99% Niobium Powder NB-M-04-P Contact American Elements
(5N) 99.999% Niobium Powder NB-M-05-P Contact American Elements

Formula CAS No. PubChem SID PubChem CID MDL No. EC No Beilstein
Re. No.
Nb 7440-03-1 24855926 23936 MFCD00011126 231-113-5 N/A [Nb] InChI=1S/Nb GUCVJGMIXFAOAE-UHFFFAOYSA-N

PROPERTIES Mol. Wt. Appearance Density Tensile Strength Melting Point Boiling Point Thermal Conductivity Electrical Resistivity Eletronegativity Specific Heat Heat of Vaporization Heat of Fusion MSDS
92.90 Silvery 8.57 gm/cc N/A 2468 °C 4742 °C

0.537 W/cm/K @ 298.2 K

12.5 microhm-cm @ 0°C

1.6 Paulings

0.064 Cal/g/K @ 25°C N/A

6.5 Cal/gm mole

Safety Data Sheet

Ultra High Purity Metal PowdersAmerican Elements specializes in producing high purity Niobium Powder with the smallest possible average grain sizes for use in preparation of pressed and bonded sputtering targets and in Chemical Vapor Deposition (CVD) and Physical Vapor Deposition (PVD) processes including Thermal and Electron Beam (E-Beam) Evaporation, Low Temperature Organic Evaporation, Atomic Layer Deposition (ALD), Metallic-Organic and Chemical Vapor Deposition (MOCVD). Powders are also useful in any application where high surface areas are desired such as water treatment and in fuel cell and solar applications. Nanoparticles (See also Nanotechnology Information and Quantum Dots) also produce very high surface areas. Our standard Powder particle sizes average in the range of - 325 mesh, - 100 mesh, 10-50 microns and submicron (< 1 micron). We can also provide many materials in the nanoscale range. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. See safety data and research below and pricing/lead time above. We also produce Niobium as rod, ingot, pieces, pellets, disc, granules, wire, and in compound forms, such as oxide. Other shapes are available by request.

Niobium(Nb) atomic and molecular weight, atomic number and elemental symbolNiobium (atomic symbol: Nb, atomic number: 41) is a Block D, Group 5, Period 5 element with an atomic weight of 92.90638. Niobium Bohr ModelThe number of electrons in each of niobium's shells is 2, 8, 18, 12, 1 and its electron configuration is [Kr] 4d4 5s1. The niobium atom has a radius of 146 pm and a Van der Waals radius of 207 pm. Niobium was discovered by Charles Hatchett in 1801 and first isolated by Christian Wilhelm Blomstrand in 1864. Elemental NiobiumIn its elemental form, niobium has a gray metallic appearance. Niobium has the largest magnetic penetration depth of any element and is one of three elemental type-II superconductors (along with vanadium and technetium). Niobium is found in the minerals pyrochlore, its main commercial source, and columbite. The word Niobium originates from Niobe, daughter of mythical Greek king Tantalus. For more information on niobium, including properties, safety data, research, and American Elements' catalog of niobium products, visit the Niobium Information Center.


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Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Material Safety Data Sheet (MSDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes.

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Recent Research & Development for Niobium

  • C. Coupeau, J. Durinck, M. Drouet, B. Douat, J. Bonneville, J. Colin, J. Grilhé, Atomic reconstruction of niobium (111) surfaces, Surface Science, Volume 632, February 2015
  • J. Suresh Kumar, K. Pavani, M.P.F. Graça, M.J. Soares, Enhanced green upconversion by controlled ceramization of Er3+–Yb3+ co-doped sodium niobium tellurite glass–ceramics for low temperature sensors, Journal of Alloys and Compounds, Volume 617, 25 December 2014
  • William A. Rigdon, Xinyu Huang, Carbon monoxide tolerant platinum electrocatalysts on niobium doped titania and carbon nanotube composite supports, Journal of Power Sources, Volume 272, 25 December 2014
  • Gisele C. Leindecker, Annelise K. Alves, Carlos P. Bergmann, Synthesis of niobium oxide fibers by electrospinning and characterization of their morphology and optical properties, Ceramics International, Volume 40, Issue 10, Part B, December 2014
  • Hong-Hong Li, Xiao-Yu Kuang, Li-Ping Ding, Peng Shao, Li-Li Han, Ting-Ting Lu, Evolution of geometrical structures, stabilities and electronic properties of neutral and anionic Nbn−1Co (n = 2–9) clusters: Comparison with pure niobium clusters, Computational Materials Science, Volume 95, December 2014
  • P. Tsakiropoulos, On the macrosegregation of silicon in niobium silicide based alloys, Intermetallics, Volume 55, December 2014
  • N.А. Tulina, А.N. Rossolenko, I.Yu. Borisenko, I.М. Shmytko, А.М. Ionov, А.А. Ivanov, Realization of rectifying and resistive switching behaviors of mesoscopic niobium oxide-based structures, Materials Letters, Volume 136, 1 December 2014
  • Yunyun Han, Jianxin Yi, Xin Guo, Improving the chemical stability of oxygen permeable SrFeO3 − δ perovskite in CO2 by niobium doping, Solid State Ionics, Volume 267, 1 December 2014
  • Z.J. Xie, Y.P. Fang, G. Han, H. Guo, R.D.K. Misra, C.J. Shang, Structure–property relationship in a 960 MPa grade ultrahigh strength low carbon niobium–vanadium microalloyed steel: The significance of high frequency induction tempering, Materials Science and Engineering: A, Volume 618, 17 November 2014
  • Sofya B. Artemkina, Tatyana Yu Podlipskaya, Alexander I. Bulavchenko, Alexander I. Komonov, Yuri V. Mironov, Vladimir E. Fedorov, Preparation and characterization of colloidal dispersions of layered niobium chalcogenides, Colloids and Surfaces A: Physicochemical and Engineering Aspects, Volume 461, 5 November 2014