Process for the production of a ferromagnetic metal powder

Details Process for the production of a ferromagnetic metal powder Process for the production of a ferromagnetic metal powder

1975-10-02

1978-01-17

Satterfield, Walter R.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

75 5AA, 252 6255, 252 6256, H01F 102, H01F 106

Patent

active

040690733

ABSTRACT:
A ferromagnetic metal powder obtained by a reducing reaction of wet process or dry process is brought into contact with a solution containing phosphate ion. The ferromagnetic metal powder treated in this way is favorably used for magnetic recording media, in particular, suitable for high density recording.

REFERENCES:
patent: 3607218 (1971-09-01), Akashi et al.
patent: 3661556 (1972-05-01), Jolley et al.
patent: 3669643 (1972-06-01), Bagley et al.
patent: 3756866 (1973-09-01), Parker et al.
patent: 3925114 (1975-12-01), Takahashi et al.

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