Magnetic and corrosion characteristics of Nd-Fe-B magnet with various surface coatings

C. W. Cheng, Hau Chung Man, F. T. Cheng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

46 Citations (Scopus)


Various surface coatings, including duplex Ni(undercoat)/Cr(topcoat), multilayer Ni/Cu/Ni/Cr, Zn, bright Ni, bright Au, and black epoxy were applied to improve the corrosion resistance of the Nd-Fe-B magnet. The corrosion behavior of the surface-coated magnets was studied using Normal and Acetic Acid Salt Spray Tests. The influence of coating and corrosion on the magnetic properties was also investigated. It was found that the duplex Ni/Cr coating provided the best corrosion protection with little deterioration in the magnetic properties during the corrosion process.
Original languageEnglish
Pages (from-to)3910-3912
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number5 PART 2
Publication statusPublished - 1 Dec 1997

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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