Ferromagnetic metal particles, consisting essentially of iron an

Details Ferromagnetic metal particles, consisting essentially of iron an Ferromagnetic metal particles, consisting essentially of iron an

1981-06-29

1982-11-23

Stallard, W.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75251, 148 615R, 148 615Z, 148 616, 148105, 148 62, H01F 106

Patent

active

043603777

ABSTRACT:
Ferromagnetic metal particles, consisting essentially of iron and comprising a core, containing not less than 85% by weight of metallic iron, and an iron oxide plus chromium oxide surface layer surrounding this core, which layer additionally contains one or more elements selected from the group comprising zinc, phosphorus in the form of phosphate, aluminum, calcium, strontium, barium, cadmium, lead, cobalt and nickel in a total amount of not more than 9.5% by weight, based on the total amount of the metal particles, and a process for the production of such particles.

REFERENCES:
patent: 3837912 (1974-09-01), Roden
patent: 3865627 (1975-02-01), Roden et al.
patent: 3932293 (1976-01-01), Roden
M. Cohen, & A. F. Beck, Z. Elektrochem, 62 (1958), pp. 696-699.

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