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US 4,376,740 AGranted
Process for production fine metal particles
AssigneeNational Research Institute for Metals
InventorsMasahiro Uda, Satoru Ohno, Tsutomu Hoshi
Life of this patent
Estimating the term…
Abstract
A process for producing fine particles of a metal or alloy, which comprises contacting a molten metal or alloy with activated hydrogen gas thereby to release fine particles of the metal or alloy having a diameter of less than 10 microns from the molten metal or alloy.
Claims4
A process for producing solid particles of a metal or alloy, comprising:
- a. directing a stream of activated hydrogen gas or a mixture of at least 20 percent by volume of activated hydrogen gas and up to 80 percent by volume of at least one gas selected from the group consisting of argon and helium, onto a mass of molten metal or alloy to subdivide said mass into particles of said metal or alloy having a diameter of less than 5 microns, and
- b. cooling and collecting said particles.
Dependencies are inferred from the claim text.