CORROSION PROTECTION OF NDFEB MAGNETS BY SURFACE-COATINGS .1. SALT SPRAY TEST

Authors
MAN HH MAN HC LEUNG LK
Citation
Hh. Man et al., CORROSION PROTECTION OF NDFEB MAGNETS BY SURFACE-COATINGS .1. SALT SPRAY TEST, Journal of magnetism and magnetic materials, 152(1-2), 1996, pp. 40-46
Citations number
15
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
152
Issue
1-2
Year of publication
1996
Pages
40 - 46
Database
ISI
SICI code
0304-8853(1996)152:1-2<40:CPONMB>2.0.ZU;2-#
Abstract
Various surface modification techniques including electroplating, chem ical vapour deposition (CVD) and laser surface melting have been appli ed to improve the poor corrosion resistance of NdFeB magnets. A range of heterogeneous double-layer coatings were prepared. The corrosion re sistance of the surface-treated samples was compared with that of some commercially available coated samples using a aerated salt spray test . It was found that a double coating of Cr (topcoat)/Ni(undercoat) off ered the best corrosion resistance.