Effects of Al/Cu co-doping on crystal structure and chemical composition of Nd-rich phases in Nd-Fe-B sintered magnet
DC Field | Value | Language |
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dc.contributor.author | Kim, Tae-Hoon | - |
dc.contributor.author | Lee, Seong-Rae | - |
dc.contributor.author | Bae, Kyoung-Hoon | - |
dc.contributor.author | Kim, Hyo-Jun | - |
dc.contributor.author | Lee, Min-Woo | - |
dc.contributor.author | Jang, Tae-Suk | - |
dc.date.accessioned | 2021-09-03T04:08:20Z | - |
dc.date.available | 2021-09-03T04:08:20Z | - |
dc.date.created | 2021-06-16 | - |
dc.date.issued | 2017-07-01 | - |
dc.identifier.issn | 1359-6454 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/82866 | - |
dc.description.abstract | We investigated the effects of Al/Cu co-doping on the magnetic and microstructural properties of a Nd-Fe-B sintered magnet. In particular, the structural and compositional changes of Cu-dissolved Nd-rich (Cu-rich) triple junction phase (TIP) and grain boundary phase (GBP) experienced upon Al/Cu co-doping were intensively analyzed. Al was selectively dissolved into the Cu-low-rich phases (B phase, 3-15 at.% Cu) other than the Cu-high-rich phases (A phase, 20-45 at.% Cu). The B phase with an h-Nd2O3 structure was transformed to the C phase (Al-dissolved Cu-low-rich phases) with a c-Nd2O3 structure upon Al dissolution. In addition, the continuity of C GBP was improved and the Fe content of C GBP was reduced (25 -> 5 at.% Fe). As a result, the coercivity (H-c) of the Al/Cu co-doped magnet was higher than that of a Cu-doped magnet. The critical role played by Al in improving the magnetic properties and microstructure of the Al/Cu co-doped magnet was elucidated. The detailed mechanism for the 1-1, enhancement of the Al/Cu co-doped magnet was discussed based on the results. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.subject | GRAIN-BOUNDARY PHASE | - |
dc.subject | AL | - |
dc.subject | COERCIVITY | - |
dc.subject | MICROSTRUCTURE | - |
dc.subject | DEPENDENCE | - |
dc.title | Effects of Al/Cu co-doping on crystal structure and chemical composition of Nd-rich phases in Nd-Fe-B sintered magnet | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Seong-Rae | - |
dc.identifier.doi | 10.1016/j.actamat.2017.05.046 | - |
dc.identifier.scopusid | 2-s2.0-85019954414 | - |
dc.identifier.wosid | 000407413100019 | - |
dc.identifier.bibliographicCitation | ACTA MATERIALIA, v.133, pp.200 - 207 | - |
dc.relation.isPartOf | ACTA MATERIALIA | - |
dc.citation.title | ACTA MATERIALIA | - |
dc.citation.volume | 133 | - |
dc.citation.startPage | 200 | - |
dc.citation.endPage | 207 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Metallurgy & Metallurgical Engineering | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Metallurgy & Metallurgical Engineering | - |
dc.subject.keywordPlus | GRAIN-BOUNDARY PHASE | - |
dc.subject.keywordPlus | AL | - |
dc.subject.keywordPlus | COERCIVITY | - |
dc.subject.keywordPlus | MICROSTRUCTURE | - |
dc.subject.keywordPlus | DEPENDENCE | - |
dc.subject.keywordAuthor | Nd-Fe-B sintered magnet | - |
dc.subject.keywordAuthor | Coercivity | - |
dc.subject.keywordAuthor | Microstructures | - |
dc.subject.keywordAuthor | Triple junctions | - |
dc.subject.keywordAuthor | Grain boundaries | - |
dc.subject.keywordAuthor | Metastable phases | - |
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