Magnetic and microstructural characteristics of Nd-Fe-B sintered magnets produced by Dy sputter coating process

Jin Woo Kim, Jong Min Byun, Ju Hyuk Park, Young Do Kim

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

Abstract

High-coercivity magnets were fabricated via a sputter coating process. A powder was successfully made in core-shell type structures by coating Nd-Fe-B powder with dysprosium nanoparticles. The maximum thickness of the Dy shell was 69.5 nm. The sputter coating of the Nd-Fe-B powder yielded samples with densities greater than 98% as a result of the effective penetration of (Nd,Dy)2Fe14B phases in the hollows between neighboring Nd2Fe14B grains. The microstructures of the (Nd,Dy)2Fe14B phases were effectively controlled, resulting in improved magnetic properties. Thus, the maximum coercivity of the samples increased from 934.8 to 1072.8 kA/m after the Dy sputter coating process.

Original languageEnglish
Title of host publicationAdvances in Powder Metallurgy and Particulate Materials - 2014, Proceedings of the 2014 World Congress on Powder Metallurgy and Particulate Materials, PM 2014
PublisherMetal Powder Industries Federation
Pages9200-9207
Number of pages8
ISBN (Electronic)0985339764, 9780985339760
StatePublished - 2014
Event2014 World Congress on Powder Metallurgy and Particulate Materials, PM 2014 - Orlando, United States
Duration: 18 May 201422 May 2014

Publication series

NameAdvances in Powder Metallurgy and Particulate Materials - 2014, Proceedings of the 2014 World Congress on Powder Metallurgy and Particulate Materials, PM 2014

Conference

Conference2014 World Congress on Powder Metallurgy and Particulate Materials, PM 2014
Country/TerritoryUnited States
CityOrlando
Period18/05/1422/05/14

Fingerprint

Dive into the research topics of 'Magnetic and microstructural characteristics of Nd-Fe-B sintered magnets produced by Dy sputter coating process'. Together they form a unique fingerprint.

Cite this