Method for producing iron-nitride powders

Details Method for producing iron-nitride powders Method for producing iron-nitride powders

1992-08-28

1994-07-19

Wyszomierski, George

Specialized metallurgical processes, compositions for use therei

Processes

Producing or purifying free metal powder or producing or...

75352, 75354, 423409, 264 82, B22F 904

Patent

active

053305540

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.

REFERENCES:
patent: 2872292 (1959-02-01), Altmann
patent: 3700499 (1972-10-01), Haack et al.
patent: 4787561 (1988-11-01), Kemp et al.
J. Appl. Phys., vol. 67, No. 9, May 1, 1990, M. Komuro, et al., "Epitaxial Growth and Magnetic Properties of Fe.sub.16 N.sub.2 Films with High Saturation Magnetic Flux Density (Invited)", pp. 5126-5131.
Appl. Phys. Lett., vol. 20, No. 12, Jun. 15, 1972, T. K. Kim, et al., "New Magnetic Material Having Ultrahigh Magnetic Moment", pp. 492-494.

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