Method for producing iron-nitride powders
AssigneeAisin Seiki Kabushiki Kaisha
InventorsTamotsu Koyano, Uichiro Mizutani
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Abstract
A method for producing iron-nitride powder comprises the steps of introducing iron powder and NH.sub.3 gas or N.sub.2 gas in a vessel, and milling the iron powder in the NH.sub.3 gas or the N.sub.2 gas. Furthermore, a method for producing iron-nitride powder comprises the steps of introducing iron powder and intermetallic compound powder of iron and nitrogen in a vessel, and milling the iron powder and the intermetallic compound powder. The obtained iron-nitride powder consists essentially 85.1 to 99 at % of iron and the rest of nitrogen, and has a body centered cubic structure.
Claims7
A method for producing iron-nitride powder, comprising the steps of:
- introducing iron powder and an NH.sub.3 gas or N.sub.2 gas atmosphere into a vessel;
- and
- milling said iron power in said NH.sub.3 gas or said N.sub.2 gas atmosphere at a temperature less than 160.degree. C.
A method for producing iron-nitride power, comprising the steps of:
- introducing iron powder and an intermetallic compound powder of iron and nitrogen into a vessel;
- and
- milling said iron powder and said intermetallic compound powder under an inert gas atmosphere or an ammonia gas or nitrogen atmosphere or a mixed gas atmosphere of N.sub.2 and H.sub.2 at a temperature less than 160.degree. C.
Dependencies are inferred from the claim text.