Permanent oxide magnet and method of coating same

Details Permanent oxide magnet and method of coating same Permanent oxide magnet and method of coating same

1987-02-19

1989-04-11

Thibodeau, Paul J.

Stock material or miscellaneous articles

Composite

Of inorganic material

204 141, 204 34, 427127, 4274301, 428702, 428900, B32B 100, H01F 702

Patent

active

048205923

ABSTRACT:
A permanent oxide magnet having a basic composition of MO.Fe.sub.2 O.sub.3, wherein M represents one or more elements selected from the group consisting of Sr, Ba and Pb, in a molar ratio of Fe.sub.2 O.sub.3 /MO=5.3 to 6.2, a volume resistivity of less than 10.sup.7 .OMEGA..multidot.cm and a density of 4.80 g/cm.sup.3 or more, the magnet being coated with an electrodeposition paint layer. Since this permanent magnet has a low resistivity, it can be well coated with an electrodeposition coating layer.

REFERENCES:
patent: 2980617 (1961-04-01), Ireland
patent: 3723779 (1973-03-01), Gillum
patent: 3897355 (1975-07-01), Arendt et al.
J. Y. Laval et al; "Intergranular Structure and Electrical Behaviour in a Mixed Oxide-MnZn Ferrite"; Feb. 1986; pp. Cl 329-333.
IBM Specification for Part No. 5897387 entitled: "Electrophoretic Epoxy Coating System for Magnets".

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