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US 9,543,075 B2Granted
Niobium powders having a particle shape
AssigneeH.C. Starck GmbH
InventorsJosua Löffelholz, Jürgen Hilpert
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Abstract
A valve metal powder having a particle shape factor mean value f, as determined by SEM image analysis, of 0.65≦f≦1, said powder has an average agglomerate particle size D50 value, as determined with a MasterSizer in accordance with ASTM B 822, of 40 to 200 μm and wherein the valve metal powder is niobium.
Claims16
A valve metal powder having a particle shape factor mean value f, as determined by SEM image analysis, of 0.65≦f≦1, said powder has an average agglomerate particle size D50 value, as determined with a MasterSizer in accordance with ASTM B 822, of 40 to 200 μm and wherein the valve metal powder is niobium.
Dependencies are inferred from the claim text.