Magnetics Hysteresis Properties and Microstructure of High-Energy (Nd,Dy)–Fe–B Magnets with Low Oxygen Content
Magnetic properties and microstructure of high-energy (Nd,Dy)–Fe–B magnets with Dy of no more than 1 wt % prepared via a low-oxygen routine are studied. Oxygen content in magnets does not exceed 0.20 wt %. 0.5 wt %–Dy addition reliably stabilizes the coercivity M H c higher than 13 kOe; in this case...
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| Veröffentlicht in: | Physics of metals and metallography 2021-12, Vol.122 (12), p.1173-1182 |
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| container_title | Physics of metals and metallography |
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| creator | Vasilenko, D. Yu Shitov, A. V. Bratushev, D. Yu Podkorytov, K. I. Gaviko, V. S. Golovnya, O. A. Popov, A. G. |
| description | Magnetic properties and microstructure of high-energy (Nd,Dy)–Fe–B magnets with Dy of no more than 1 wt % prepared via a low-oxygen routine are studied. Oxygen content in magnets does not exceed 0.20 wt %. 0.5 wt %–Dy addition reliably stabilizes the coercivity
M
H
c
higher than 13 kOe; in this case, the maximum energy density product (
BH
)
max
of magnets is 48.5–49.5 MG Oe. High magnetic hysteresis properties are gained via optimization of chemical and phase compositions of magnets, as well as their microstructure. The grain size of the main Nd
2
Fe
14
B phase is approximately 3.5 μm; and according to X-ray analysis, the weight fraction of additional Nd-rich phases (NdO
x
and Nd
2
O
3
) does not exceed 2.5%. Scanning electron microscopy study has demonstrated that in triple junctions of Nd
2
Fe
14
B grains there are two types of inclusions (В and С) of the NdO
x
phase, which significantly differ by their chemical composition. С-phase inclusions with low oxygen content (
х
≈ 0.03) are enriched in Fe (40–50 wt %); whereas, В-phase with high oxygen content (
х
≈ 0.70) contains 3–5 times less Fe. The angular dependences of coercivity of (Nd,Dy)–Fe–B magnets are presented. |
| doi_str_mv | 10.1134/S0031918X21120127 |
| format | Article |
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M
H
c
higher than 13 kOe; in this case, the maximum energy density product (
BH
)
max
of magnets is 48.5–49.5 MG Oe. High magnetic hysteresis properties are gained via optimization of chemical and phase compositions of magnets, as well as their microstructure. The grain size of the main Nd
2
Fe
14
B phase is approximately 3.5 μm; and according to X-ray analysis, the weight fraction of additional Nd-rich phases (NdO
x
and Nd
2
O
3
) does not exceed 2.5%. Scanning electron microscopy study has demonstrated that in triple junctions of Nd
2
Fe
14
B grains there are two types of inclusions (В and С) of the NdO
x
phase, which significantly differ by their chemical composition. С-phase inclusions with low oxygen content (
х
≈ 0.03) are enriched in Fe (40–50 wt %); whereas, В-phase with high oxygen content (
х
≈ 0.70) contains 3–5 times less Fe. The angular dependences of coercivity of (Nd,Dy)–Fe–B magnets are presented.</description><identifier>ISSN: 0031-918X</identifier><identifier>EISSN: 1555-6190</identifier><identifier>DOI: 10.1134/S0031918X21120127</identifier><language>eng</language><publisher>Moscow: Pleiades Publishing</publisher><subject>Chemical composition ; Chemistry and Materials Science ; Coercivity ; Dysprosium ; Electrical and Magnetic Properties ; Flux density ; Grain size ; Hysteresis ; Inclusions ; Magnetic hysteresis ; Magnetic properties ; Magnets ; Materials Science ; Metallic Materials ; Microstructure ; Neodymium ; Optimization ; Oxygen content ; Oxygen enrichment ; X ray analysis</subject><ispartof>Physics of metals and metallography, 2021-12, Vol.122 (12), p.1173-1182</ispartof><rights>The Author(s) 2021. ISSN 0031-918X, Physics of Metals and Metallography, 2021, Vol. 122, No. 12, pp. 1173–1182. © The Author(s), 2021. This article is an open access publication. Russian Text © The Author(s), 2021, published in Fizika Metallov i Metallovedenie, 2021, Vol. 122, No. 12, pp. 1261–1270.</rights><rights>COPYRIGHT 2021 Springer</rights><rights>The Author(s) 2021. ISSN 0031-918X, Physics of Metals and Metallography, 2021, Vol. 122, No. 12, pp. 1173–1182. © The Author(s), 2021. This article is an open access publication. Russian Text © The Author(s), 2021, published in Fizika Metallov i Metallovedenie, 2021, Vol. 122, No. 12, pp. 1261–1270. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c398t-8d8f94a36012a734c0001927141930439d9526e52140e496d4075c1a160f6c163</citedby><cites>FETCH-LOGICAL-c398t-8d8f94a36012a734c0001927141930439d9526e52140e496d4075c1a160f6c163</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1134/S0031918X21120127$$EPDF$$P50$$Gspringer$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1134/S0031918X21120127$$EHTML$$P50$$Gspringer$$Hfree_for_read</linktohtml><link.rule.ids>314,776,780,27903,27904,41467,42536,51297</link.rule.ids></links><search><creatorcontrib>Vasilenko, D. Yu</creatorcontrib><creatorcontrib>Shitov, A. V.</creatorcontrib><creatorcontrib>Bratushev, D. Yu</creatorcontrib><creatorcontrib>Podkorytov, K. I.</creatorcontrib><creatorcontrib>Gaviko, V. S.</creatorcontrib><creatorcontrib>Golovnya, O. A.</creatorcontrib><creatorcontrib>Popov, A. G.</creatorcontrib><title>Magnetics Hysteresis Properties and Microstructure of High-Energy (Nd,Dy)–Fe–B Magnets with Low Oxygen Content</title><title>Physics of metals and metallography</title><addtitle>Phys. Metals Metallogr</addtitle><description>Magnetic properties and microstructure of high-energy (Nd,Dy)–Fe–B magnets with Dy of no more than 1 wt % prepared via a low-oxygen routine are studied. Oxygen content in magnets does not exceed 0.20 wt %. 0.5 wt %–Dy addition reliably stabilizes the coercivity
M
H
c
higher than 13 kOe; in this case, the maximum energy density product (
BH
)
max
of magnets is 48.5–49.5 MG Oe. High magnetic hysteresis properties are gained via optimization of chemical and phase compositions of magnets, as well as their microstructure. The grain size of the main Nd
2
Fe
14
B phase is approximately 3.5 μm; and according to X-ray analysis, the weight fraction of additional Nd-rich phases (NdO
x
and Nd
2
O
3
) does not exceed 2.5%. Scanning electron microscopy study has demonstrated that in triple junctions of Nd
2
Fe
14
B grains there are two types of inclusions (В and С) of the NdO
x
phase, which significantly differ by their chemical composition. С-phase inclusions with low oxygen content (
х
≈ 0.03) are enriched in Fe (40–50 wt %); whereas, В-phase with high oxygen content (
х
≈ 0.70) contains 3–5 times less Fe. The angular dependences of coercivity of (Nd,Dy)–Fe–B magnets are presented.</description><subject>Chemical composition</subject><subject>Chemistry and Materials Science</subject><subject>Coercivity</subject><subject>Dysprosium</subject><subject>Electrical and Magnetic Properties</subject><subject>Flux density</subject><subject>Grain size</subject><subject>Hysteresis</subject><subject>Inclusions</subject><subject>Magnetic hysteresis</subject><subject>Magnetic properties</subject><subject>Magnets</subject><subject>Materials Science</subject><subject>Metallic Materials</subject><subject>Microstructure</subject><subject>Neodymium</subject><subject>Optimization</subject><subject>Oxygen content</subject><subject>Oxygen enrichment</subject><subject>X ray analysis</subject><issn>0031-918X</issn><issn>1555-6190</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><recordid>eNp1Uc1q3DAQFqWFbtM8QG-CXlqIE40ky9Yx2STdwOYH2kJvRshjRyGRNpKWxLe-Q94wTxIbF3IoYWAGZr7vmz9CvgDbBxDy4CdjAjTUfzgAZ8Crd2QBZVkWCjR7TxZTuZjqH8mnlG4Yk1IqsSDx3PQes7OJroaUMWJyiV7FsMGYHSZqfEvPnY0h5bi1eRuRho6uXH9dnHiM_UC_XbR7x8P3579Ppzi6IzpLJvrg8jVdhwd6-Tj06Oky-Iw-fyYfOnObcPdf3CG_T09-LVfF-vLH2fJwXVih61zUbd1paYQatzGVkJYxBppXIEELJoVudckVlhwkQ6lVK1lVWjCgWKcsKLFDvs66mxjut5hycxO20Y8tG65AVlqpmo-o_RnVm1tsnO9CjsaO1uKds8Fj58b8oaprEErrSRZmwnSTFLFrNtHdmTg0wJrpF81_vxg5fOakEet7jK-jvE16ASb2ir8</recordid><startdate>20211201</startdate><enddate>20211201</enddate><creator>Vasilenko, D. Yu</creator><creator>Shitov, A. V.</creator><creator>Bratushev, D. Yu</creator><creator>Podkorytov, K. I.</creator><creator>Gaviko, V. S.</creator><creator>Golovnya, O. A.</creator><creator>Popov, A. G.</creator><general>Pleiades Publishing</general><general>Springer</general><general>Springer Nature B.V</general><scope>C6C</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20211201</creationdate><title>Magnetics Hysteresis Properties and Microstructure of High-Energy (Nd,Dy)–Fe–B Magnets with Low Oxygen Content</title><author>Vasilenko, D. Yu ; Shitov, A. V. ; Bratushev, D. Yu ; Podkorytov, K. I. ; Gaviko, V. S. ; Golovnya, O. A. ; Popov, A. G.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c398t-8d8f94a36012a734c0001927141930439d9526e52140e496d4075c1a160f6c163</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Chemical composition</topic><topic>Chemistry and Materials Science</topic><topic>Coercivity</topic><topic>Dysprosium</topic><topic>Electrical and Magnetic Properties</topic><topic>Flux density</topic><topic>Grain size</topic><topic>Hysteresis</topic><topic>Inclusions</topic><topic>Magnetic hysteresis</topic><topic>Magnetic properties</topic><topic>Magnets</topic><topic>Materials Science</topic><topic>Metallic Materials</topic><topic>Microstructure</topic><topic>Neodymium</topic><topic>Optimization</topic><topic>Oxygen content</topic><topic>Oxygen enrichment</topic><topic>X ray analysis</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Vasilenko, D. Yu</creatorcontrib><creatorcontrib>Shitov, A. V.</creatorcontrib><creatorcontrib>Bratushev, D. Yu</creatorcontrib><creatorcontrib>Podkorytov, K. I.</creatorcontrib><creatorcontrib>Gaviko, V. S.</creatorcontrib><creatorcontrib>Golovnya, O. A.</creatorcontrib><creatorcontrib>Popov, A. G.</creatorcontrib><collection>Springer Nature OA Free Journals</collection><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Physics of metals and metallography</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Vasilenko, D. Yu</au><au>Shitov, A. V.</au><au>Bratushev, D. Yu</au><au>Podkorytov, K. I.</au><au>Gaviko, V. S.</au><au>Golovnya, O. A.</au><au>Popov, A. G.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Magnetics Hysteresis Properties and Microstructure of High-Energy (Nd,Dy)–Fe–B Magnets with Low Oxygen Content</atitle><jtitle>Physics of metals and metallography</jtitle><stitle>Phys. Metals Metallogr</stitle><date>2021-12-01</date><risdate>2021</risdate><volume>122</volume><issue>12</issue><spage>1173</spage><epage>1182</epage><pages>1173-1182</pages><issn>0031-918X</issn><eissn>1555-6190</eissn><abstract>Magnetic properties and microstructure of high-energy (Nd,Dy)–Fe–B magnets with Dy of no more than 1 wt % prepared via a low-oxygen routine are studied. Oxygen content in magnets does not exceed 0.20 wt %. 0.5 wt %–Dy addition reliably stabilizes the coercivity
M
H
c
higher than 13 kOe; in this case, the maximum energy density product (
BH
)
max
of magnets is 48.5–49.5 MG Oe. High magnetic hysteresis properties are gained via optimization of chemical and phase compositions of magnets, as well as their microstructure. The grain size of the main Nd
2
Fe
14
B phase is approximately 3.5 μm; and according to X-ray analysis, the weight fraction of additional Nd-rich phases (NdO
x
and Nd
2
O
3
) does not exceed 2.5%. Scanning electron microscopy study has demonstrated that in triple junctions of Nd
2
Fe
14
B grains there are two types of inclusions (В and С) of the NdO
x
phase, which significantly differ by their chemical composition. С-phase inclusions with low oxygen content (
х
≈ 0.03) are enriched in Fe (40–50 wt %); whereas, В-phase with high oxygen content (
х
≈ 0.70) contains 3–5 times less Fe. The angular dependences of coercivity of (Nd,Dy)–Fe–B magnets are presented.</abstract><cop>Moscow</cop><pub>Pleiades Publishing</pub><doi>10.1134/S0031918X21120127</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
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| ispartof | Physics of metals and metallography, 2021-12, Vol.122 (12), p.1173-1182 |
| issn | 0031-918X 1555-6190 |
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| subjects | Chemical composition Chemistry and Materials Science Coercivity Dysprosium Electrical and Magnetic Properties Flux density Grain size Hysteresis Inclusions Magnetic hysteresis Magnetic properties Magnets Materials Science Metallic Materials Microstructure Neodymium Optimization Oxygen content Oxygen enrichment X ray analysis |
| title | Magnetics Hysteresis Properties and Microstructure of High-Energy (Nd,Dy)–Fe–B Magnets with Low Oxygen Content |
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