Investigation of the magnetic properties and fracture behavior of Nd–Fe–B alloy powders during high-energy ball milling
In this work, Nd–Fe–B alloy powders are fabricated via high energy ball milling and their fracture behavior and magnetic properties are investigated at different milling times. The powder characteristics (particle shape, size, size distribution, and microstructure) and magnetic properties of the Nd–...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/abb32c |
| _version_ | 1797746171933884416 |
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| author | Dong-won Shin Babu Madavali Dong-soo Kim Jin-Young Lee Min-chul Kang Cheol-woong Yang C Suryanarayana Soon-jik Hong |
| author_facet | Dong-won Shin Babu Madavali Dong-soo Kim Jin-Young Lee Min-chul Kang Cheol-woong Yang C Suryanarayana Soon-jik Hong |
| author_sort | Dong-won Shin |
| collection | DOAJ |
| description | In this work, Nd–Fe–B alloy powders are fabricated via high energy ball milling and their fracture behavior and magnetic properties are investigated at different milling times. The powder characteristics (particle shape, size, size distribution, and microstructure) and magnetic properties of the Nd–Fe–B alloys are systematically analyzed. The initial spherical Nd–Fe–B powder is cracked/crushed even after a short period of milling (30 s) due to the high impact energy generated during high energy ball milling. These randomly cracked polygonal-shaped powders are fragmented after 5 min of milling and converted to fine powders. Interestingly, the fine particles after milling for 5 min are conducive to agglomeration at longer milling times (20–60 min) and formed spherically-shaped agglomerated powder. Additionally, the sphericity of the powder increased to 92% by re-pulverization and agglomeration at 60 min. The milled powder shows the Nd _2 Fe _14 B phase, and the x-ray diffraction patterns exhibit peak broadening with increasing milling time, clearly confirming the powder refinement behavior by high energy ball milling. The magnetic properties of the milled powders are systematically investigated and their behavior is elucidated as a function of the milling time. |
| first_indexed | 2024-03-12T15:34:09Z |
| format | Article |
| id | doaj.art-2b3e95bc0bbb44dd988633b7eeca8760 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:34:09Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-2b3e95bc0bbb44dd988633b7eeca87602023-08-09T16:19:02ZengIOP PublishingMaterials Research Express2053-15912020-01-017909610110.1088/2053-1591/abb32cInvestigation of the magnetic properties and fracture behavior of Nd–Fe–B alloy powders during high-energy ball millingDong-won Shin0Babu Madavali1https://orcid.org/0000-0002-8486-701XDong-soo Kim2Jin-Young Lee3Min-chul Kang4https://orcid.org/0000-0002-7710-0806Cheol-woong Yang5C Suryanarayana6Soon-jik Hong7https://orcid.org/0000-0003-1293-6538Division of Advanced Materials Engineering, Kongju National University , Cheonan 31080, Republic of KoreaDivision of Advanced Materials Engineering, Kongju National University , Cheonan 31080, Republic of KoreaConvergence Research Center for Development of Mineral Resources, Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Republic of Korea; Powder and Ceramics Division, Korea Institute of Materials Science, Changwon 51508, Republic of KoreaConvergence Research Center for Development of Mineral Resources, Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Republic of KoreaSchool of Advanced Materials Science and Engineering, Sungkyunkwan University , Suwon 03063, Republic of KoreaSchool of Advanced Materials Science and Engineering, Sungkyunkwan University , Suwon 03063, Republic of KoreaDepartment of Mechanical and Aerospace Engineering, University of Central Florida , Orlando, FL 32816-2450, United States of America; School of Materials Science and Engineering, Northeastern University , Shenyang 110819, People’s Republic of ChinaDivision of Advanced Materials Engineering, Kongju National University , Cheonan 31080, Republic of KoreaIn this work, Nd–Fe–B alloy powders are fabricated via high energy ball milling and their fracture behavior and magnetic properties are investigated at different milling times. The powder characteristics (particle shape, size, size distribution, and microstructure) and magnetic properties of the Nd–Fe–B alloys are systematically analyzed. The initial spherical Nd–Fe–B powder is cracked/crushed even after a short period of milling (30 s) due to the high impact energy generated during high energy ball milling. These randomly cracked polygonal-shaped powders are fragmented after 5 min of milling and converted to fine powders. Interestingly, the fine particles after milling for 5 min are conducive to agglomeration at longer milling times (20–60 min) and formed spherically-shaped agglomerated powder. Additionally, the sphericity of the powder increased to 92% by re-pulverization and agglomeration at 60 min. The milled powder shows the Nd _2 Fe _14 B phase, and the x-ray diffraction patterns exhibit peak broadening with increasing milling time, clearly confirming the powder refinement behavior by high energy ball milling. The magnetic properties of the milled powders are systematically investigated and their behavior is elucidated as a function of the milling time.https://doi.org/10.1088/2053-1591/abb32cnanostructured Nd–Fe–B magnetic powderhigh energy ball millingpulverizationfracturemagnetic properties |
| spellingShingle | Dong-won Shin Babu Madavali Dong-soo Kim Jin-Young Lee Min-chul Kang Cheol-woong Yang C Suryanarayana Soon-jik Hong Investigation of the magnetic properties and fracture behavior of Nd–Fe–B alloy powders during high-energy ball milling Materials Research Express nanostructured Nd–Fe–B magnetic powder high energy ball milling pulverization fracture magnetic properties |
| title | Investigation of the magnetic properties and fracture behavior of Nd–Fe–B alloy powders during high-energy ball milling |
| title_full | Investigation of the magnetic properties and fracture behavior of Nd–Fe–B alloy powders during high-energy ball milling |
| title_fullStr | Investigation of the magnetic properties and fracture behavior of Nd–Fe–B alloy powders during high-energy ball milling |
| title_full_unstemmed | Investigation of the magnetic properties and fracture behavior of Nd–Fe–B alloy powders during high-energy ball milling |
| title_short | Investigation of the magnetic properties and fracture behavior of Nd–Fe–B alloy powders during high-energy ball milling |
| title_sort | investigation of the magnetic properties and fracture behavior of nd fe b alloy powders during high energy ball milling |
| topic | nanostructured Nd–Fe–B magnetic powder high energy ball milling pulverization fracture magnetic properties |
| url | https://doi.org/10.1088/2053-1591/abb32c |
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