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US 4,502,884 AGranted
Method for producing fiber-shaped tantalum powder and the powder produced thereby
AssigneeCabot Corporation
InventorJames A. Fife
Life of this patent
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Abstract
A method for producing fiber-shaped tantalum powder by deforming a composite of tantalum powder and an auxiliary metal, and the powder produced thereby.
Claims10
A method for producing fiber-shaped powder from suitable metals of Groups IV, V, VI of the Periodic Table comprising:
- forming a composite of said metal powder particles and an auxiliary metal by powder metallurgical techniques,
- working said metal/auxiliary metal composite by mechanical deformation until said metal particles are deformed into fiber shapes within a matrix of the auxiliary metal,
- removing said auxiliary metal from said matrix by treatment with a mineral acid suitable to dissolve the auxiliary metal, and
- recovering the fiber-shaped metal powder.
1 more element
Dependencies are inferred from the claim text.