Manufacture of acicular ferromagnetic iron particles

Details Manufacture of acicular ferromagnetic iron particles Manufacture of acicular ferromagnetic iron particles

1980-07-31

1981-10-20

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

148105, 252 6255, B22F 900

Patent

active

042958792

ABSTRACT:
A process for the manufacture of acicular ferromagnetic iron particles by reducing an iron(III) oxide which carries a shape-stabilizing surface coating and has been produced by heating acicular iron(III) oxide hydroxide at 250.degree.-390.degree. C. in an atmosphere containing water vapor at a partial pressure of not less than 30 mbar, with hydrogen at 275.degree.-425.degree. C.

REFERENCES:
patent: 3082067 (1963-03-01), Hund
patent: 3607220 (1971-09-01), van der Giessen et al.
patent: 3627509 (1971-12-01), van der Giessen et al.
patent: 3702270 (1972-11-01), Kawasaki et al.
patent: 4017303 (1977-04-01), Koester
patent: 4050962 (1977-09-01), Koester
patent: 4155748 (1979-05-01), Steck et al.
patent: 4178171 (1979-12-01), Steck et al.

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