R-TM-B permanent magnet member having improved corrosion resista

Details R-TM-B permanent magnet member having improved corrosion resista R-TM-B permanent magnet member having improved corrosion resista

1991-10-04

1994-01-04

Heller, Gregory A.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428611, 428900, 428928, 427436, H01F 1053

Patent

active

052758915

ABSTRACT:
The R-TM-B permanent magnet member having an improved corrosion resistance comprising an R-TM-B permanent magnet body provided with a nickel plating layer and then with a chromate coating layer, which may be then subjected to an immersion treatment in an alkali solution.

REFERENCES:
patent: 3518169 (1970-06-01), Oyama
patent: 4169022 (1982-09-01), Ward
patent: 4696724 (1987-09-01), Deguchi et al.
patent: 4967116 (1990-10-01), Oshima
patent: 4983262 (1991-01-01), Verhoeven

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