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Niobium Sputtering Targets (Nb)

Niobium Sputtering Targets (Nb)
Material Type Niobium
Symbol Nb
Atomic Weight 92.90638
Atomic Number 41
Color/Appearance Gray, Metallic
Thermal Conductivity 54 W/m.K
Melting Point (°C) 2,468
Coefficient of Thermal Expansion 7.3 x 10-6/K
Z Ratio 0.492
Sputter DC
Max Power Density*
(Watts/Square Inch)
Type of Bond Indium, Elastomer
Comments Attacks W source.


Niobium is a lustrous, grey, ductile, paramagnetic metal in group 5 of the periodic table (see table), with an electron configuration in the outermost shells atypical for group 5. (This can be observed in the neighborhood of ruthenium (44), rhodium (45), and palladium (46).)Although it is thought to have a body-centered cubic Crystal structure from T = 0 K to its melting point, high-resolution measurements of the thermal expansion along the three crystallographic axes reveal anisotropies which are inconsistent with a cubic structure. Therefore, further research and discovery in this area is expected.

Material Notes

Niobium Sputtering Targets, Purity is 99.95%;Circular: Diameter <= 14inch, Thickness >= 1mm; Block: Length <= 32inch, Width <= 12inch, Thickness >= 1mm.

Other Information of Niobium Sputtering Targets

 Optical flims
  Fiber optics
• Architectural glass
• Wear coatings
• High purity
• Grain refinement


Manufacturing Process
  Multiple step electron beam melting
• Rolled and annealed
• Cleaning and final packaging - Cleaned for use in vacuum
  Protection from environmental contaminants
  Protection during shipment
99.95% minimum purity  (excluding Ta)
• Planar circular targets up to 20'' (500mm) diameter
• Planar tiles up to 70’’ (1800 mm) length and width for larger target configurations
• Smaller sizes also available for R&D applications
• Sputtering target bonding service
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