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Electroless Ni-Co-P coatings on sintered Nd-Fe-B magnets with improved corrosion resistance

  • Zhejiang University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

Electroless Ni-Co-P coatings have been deposited on sintered Nd-Fe-B permanent magnets by optimizing the bath composition and operating conditions. The corrosion resistance of coated Nd-Fe-B magnets was significantly improved and corresponding corrosion current density Icorr in 3.5 wt. % NaCl solution decreased by two orders of magnitude. Coated with 12μm-thick Ni-Co-P, Nd-Fe-B magnets possessed slight reduction in magnetic properties, with a modest loss of remanence (Br) by 3.9 % and coercivity ( iHC) by 4.5 %.

Original languageEnglish
Title of host publicationSynthesis and Properties of Surface Coatings - Selected, peer reviewed papers from the 6th International Conference on Materials Processing for Properties and Performance, MP3-2007
Pages53-56
Number of pages4
DOIs
StatePublished - 2009
Externally publishedYes
EventSymposium on Synthesis and Properties of Surface Coatings - 6th International Conference on Materials Processing for Properties and Performance, MP3-2007 - Beijing, China
Duration: 13 Sep 200716 Sep 2007

Publication series

NameAdvanced Materials Research
Volume75
ISSN (Print)1022-6680

Conference

ConferenceSymposium on Synthesis and Properties of Surface Coatings - 6th International Conference on Materials Processing for Properties and Performance, MP3-2007
Country/TerritoryChina
CityBeijing
Period13/09/0716/09/07

Keywords

  • Corrosion resistance
  • Electroless plating
  • Nd-Fe-B
  • Ni-Co-P

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