Fabrication of bulk nanocomposite magnets via severe plastic deformation and warm compaction

Chuanbing Rong, Ying Zhang, Narayan Poudyal, Xiang-Yuan Xiong, Matthew Kramer, J Liu

Research output: Contribution to journalArticleResearchpeer-review

Abstract

We demonstrate that a SmCo/FeCo based hard/soft nanocomposite material can be fabricated by distributing the soft magnetic α-Fe phase particles homogeneously in a hard magnetic SmCo phase through severe plastic deformation. The soft-phase particle size can be reduced from micrometers to smaller than 15 nm upon deformation. Up to 30% of the soft phase can be incorporated into the composites without coarsening. A warm compaction process of the plastically deformed powder particles then produces bulk nanocomposite magnets of fully dense nanocomposites with energy product up to 19.2 MGOe owing to effective interphase exchange coupling, which makes this type of nanocomposite magnets suitable for high energy-density applications at high temperatures.
Original languageEnglish
Pages (from-to)102513-1 - 102513-3
Number of pages1
JournalApplied Physics Letters
Volume96
Issue number10
DOIs
Publication statusPublished - 2010

Cite this

Rong, C., Zhang, Y., Poudyal, N., Xiong, X-Y., Kramer, M., & Liu, J. (2010). Fabrication of bulk nanocomposite magnets via severe plastic deformation and warm compaction. Applied Physics Letters, 96(10), 102513-1 - 102513-3. https://doi.org/10.1063/1.3358390
Rong, Chuanbing ; Zhang, Ying ; Poudyal, Narayan ; Xiong, Xiang-Yuan ; Kramer, Matthew ; Liu, J. / Fabrication of bulk nanocomposite magnets via severe plastic deformation and warm compaction. In: Applied Physics Letters. 2010 ; Vol. 96, No. 10. pp. 102513-1 - 102513-3.
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Rong, C, Zhang, Y, Poudyal, N, Xiong, X-Y, Kramer, M & Liu, J 2010, 'Fabrication of bulk nanocomposite magnets via severe plastic deformation and warm compaction', Applied Physics Letters, vol. 96, no. 10, pp. 102513-1 - 102513-3. https://doi.org/10.1063/1.3358390

Fabrication of bulk nanocomposite magnets via severe plastic deformation and warm compaction. / Rong, Chuanbing; Zhang, Ying; Poudyal, Narayan; Xiong, Xiang-Yuan; Kramer, Matthew; Liu, J.

In: Applied Physics Letters, Vol. 96, No. 10, 2010, p. 102513-1 - 102513-3.

Research output: Contribution to journalArticleResearchpeer-review

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T1 - Fabrication of bulk nanocomposite magnets via severe plastic deformation and warm compaction

AU - Rong, Chuanbing

AU - Zhang, Ying

AU - Poudyal, Narayan

AU - Xiong, Xiang-Yuan

AU - Kramer, Matthew

AU - Liu, J

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AB - We demonstrate that a SmCo/FeCo based hard/soft nanocomposite material can be fabricated by distributing the soft magnetic α-Fe phase particles homogeneously in a hard magnetic SmCo phase through severe plastic deformation. The soft-phase particle size can be reduced from micrometers to smaller than 15 nm upon deformation. Up to 30% of the soft phase can be incorporated into the composites without coarsening. A warm compaction process of the plastically deformed powder particles then produces bulk nanocomposite magnets of fully dense nanocomposites with energy product up to 19.2 MGOe owing to effective interphase exchange coupling, which makes this type of nanocomposite magnets suitable for high energy-density applications at high temperatures.

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