Anisotropic HDDR-treated Nd2Fe14B-type powder
Effects of the wheel speeds v and disproportionation time during the SC-HDDR process on the properties of Nd-Fe-B magnetic powders are investigated. It is found that the remanence B r , coercivity H cj and energy products ( BH ) max of magnetic powders all first increase to the maximum at v =3 m/s,...
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| Veröffentlicht in: | Science China. Physics, mechanics & astronomy mechanics & astronomy, 2010-09, Vol.53 (9), p.1590-1593 |
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| container_title | Science China. Physics, mechanics & astronomy |
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| creator | Liu, Min Han, BaiPing Han, GuangBing Gao, RuWei |
| description | Effects of the wheel speeds
v
and disproportionation time during the SC-HDDR process on the properties of Nd-Fe-B magnetic powders are investigated. It is found that the remanence
B
r
, coercivity
H
cj
and energy products (
BH
)
max
of magnetic powders all first increase to the maximum at
v
=3 m/s, and then decrease with enhancing
v
. This is attributed to the fact that the SC alloy flakes prepared by the wheel speed of 3 m/s display the optimized microstructure. This optimized SC alloy flakes without homogenizing treatment which carried out a short duration disproportionation treatment can prepare the evidently anisotropic powders. With prolonging disproportionation time, the alignment degree of anisotropy of magnetic powders gradually decreases. This is due to the fact that a short duration disproportionation reaction is beneficial to the disproportionated microstructure displaying the lamella crystals, and the lamella disproportionated microstructure is helpful to the formation of anisotropy. Our results confirm that the anisotropic HDDR Nd-Fe-B magnetic powders prepared directly from the SC alloy flakes without homogenizing treatment can be obtained. |
| doi_str_mv | 10.1007/s11433-010-4072-4 |
| format | Article |
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v
and disproportionation time during the SC-HDDR process on the properties of Nd-Fe-B magnetic powders are investigated. It is found that the remanence
B
r
, coercivity
H
cj
and energy products (
BH
)
max
of magnetic powders all first increase to the maximum at
v
=3 m/s, and then decrease with enhancing
v
. This is attributed to the fact that the SC alloy flakes prepared by the wheel speed of 3 m/s display the optimized microstructure. This optimized SC alloy flakes without homogenizing treatment which carried out a short duration disproportionation treatment can prepare the evidently anisotropic powders. With prolonging disproportionation time, the alignment degree of anisotropy of magnetic powders gradually decreases. This is due to the fact that a short duration disproportionation reaction is beneficial to the disproportionated microstructure displaying the lamella crystals, and the lamella disproportionated microstructure is helpful to the formation of anisotropy. Our results confirm that the anisotropic HDDR Nd-Fe-B magnetic powders prepared directly from the SC alloy flakes without homogenizing treatment can be obtained.</description><identifier>ISSN: 1674-7348</identifier><identifier>EISSN: 1869-1927</identifier><identifier>DOI: 10.1007/s11433-010-4072-4</identifier><language>eng</language><publisher>Heidelberg: SP Science China Press</publisher><subject>Alloy powders ; Anisotropy ; Astronomy ; Classical and Continuum Physics ; Coercivity ; Crystals ; Disproportionation ; Ferrous alloys ; Flakes ; HDDR process ; Homogenization ; Homogenizing ; Lamella ; Magnetic materials ; Magnetic properties ; Microstructure ; Neodymium ; Observations and Techniques ; Physics ; Physics and Astronomy ; Remanence ; Research Paper ; Wheels</subject><ispartof>Science China. Physics, mechanics & astronomy, 2010-09, Vol.53 (9), p.1590-1593</ispartof><rights>Science China Press and Springer-Verlag Berlin Heidelberg 2010</rights><rights>Science China Press and Springer-Verlag Berlin Heidelberg 2010.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c349t-2463a33115098bdaca02b3c1fdb5f828c6055b8278c56a92cecbf0f8cfab79dd3</citedby><cites>FETCH-LOGICAL-c349t-2463a33115098bdaca02b3c1fdb5f828c6055b8278c56a92cecbf0f8cfab79dd3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11433-010-4072-4$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11433-010-4072-4$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27915,27916,41479,42548,51310</link.rule.ids></links><search><creatorcontrib>Liu, Min</creatorcontrib><creatorcontrib>Han, BaiPing</creatorcontrib><creatorcontrib>Han, GuangBing</creatorcontrib><creatorcontrib>Gao, RuWei</creatorcontrib><title>Anisotropic HDDR-treated Nd2Fe14B-type powder</title><title>Science China. Physics, mechanics & astronomy</title><addtitle>Sci. China Phys. Mech. Astron</addtitle><description>Effects of the wheel speeds
v
and disproportionation time during the SC-HDDR process on the properties of Nd-Fe-B magnetic powders are investigated. It is found that the remanence
B
r
, coercivity
H
cj
and energy products (
BH
)
max
of magnetic powders all first increase to the maximum at
v
=3 m/s, and then decrease with enhancing
v
. This is attributed to the fact that the SC alloy flakes prepared by the wheel speed of 3 m/s display the optimized microstructure. This optimized SC alloy flakes without homogenizing treatment which carried out a short duration disproportionation treatment can prepare the evidently anisotropic powders. With prolonging disproportionation time, the alignment degree of anisotropy of magnetic powders gradually decreases. This is due to the fact that a short duration disproportionation reaction is beneficial to the disproportionated microstructure displaying the lamella crystals, and the lamella disproportionated microstructure is helpful to the formation of anisotropy. Our results confirm that the anisotropic HDDR Nd-Fe-B magnetic powders prepared directly from the SC alloy flakes without homogenizing treatment can be obtained.</description><subject>Alloy powders</subject><subject>Anisotropy</subject><subject>Astronomy</subject><subject>Classical and Continuum Physics</subject><subject>Coercivity</subject><subject>Crystals</subject><subject>Disproportionation</subject><subject>Ferrous alloys</subject><subject>Flakes</subject><subject>HDDR process</subject><subject>Homogenization</subject><subject>Homogenizing</subject><subject>Lamella</subject><subject>Magnetic materials</subject><subject>Magnetic properties</subject><subject>Microstructure</subject><subject>Neodymium</subject><subject>Observations and Techniques</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Remanence</subject><subject>Research Paper</subject><subject>Wheels</subject><issn>1674-7348</issn><issn>1869-1927</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNp1kE1LAzEQhoMoWGp_gLeCFy_RTL5zrK21QlEQPYdsNitb2t012SL9901ZQRCcy8zhmZeZB6FrIHdAiLpPAJwxTIBgThTF_AyNQEuDwVB1nmepOFaM60s0SWlDcjFDuOIjhGdNndo-tl3tp6vF4g33Mbg-lNOXki4D8AfcH7ow7drvMsQrdFG5bQqTnz5GH8vH9_kKr1-fnuezNfaMmx5TLpljDEAQo4vSeUdowTxUZSEqTbWXRIhCU6W9kM5QH3xRkUr7yhXKlCUbo9sht4vt1z6k3u7q5MN265rQ7pPNDwEVXBKe0Zs_6KbdxyZfZ6kBLZQUIDMFA-Vjm1IMle1ivXPxYIHYk0M7OLTZoT05tKdkOuykzDafIf4m_790BMehcQo</recordid><startdate>20100901</startdate><enddate>20100901</enddate><creator>Liu, Min</creator><creator>Han, BaiPing</creator><creator>Han, GuangBing</creator><creator>Gao, RuWei</creator><general>SP Science China Press</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>P5Z</scope><scope>P62</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>7TB</scope><scope>7U5</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>20100901</creationdate><title>Anisotropic HDDR-treated Nd2Fe14B-type powder</title><author>Liu, Min ; Han, BaiPing ; Han, GuangBing ; Gao, RuWei</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c349t-2463a33115098bdaca02b3c1fdb5f828c6055b8278c56a92cecbf0f8cfab79dd3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Alloy powders</topic><topic>Anisotropy</topic><topic>Astronomy</topic><topic>Classical and Continuum Physics</topic><topic>Coercivity</topic><topic>Crystals</topic><topic>Disproportionation</topic><topic>Ferrous alloys</topic><topic>Flakes</topic><topic>HDDR process</topic><topic>Homogenization</topic><topic>Homogenizing</topic><topic>Lamella</topic><topic>Magnetic materials</topic><topic>Magnetic properties</topic><topic>Microstructure</topic><topic>Neodymium</topic><topic>Observations and Techniques</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Remanence</topic><topic>Research Paper</topic><topic>Wheels</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liu, Min</creatorcontrib><creatorcontrib>Han, BaiPing</creatorcontrib><creatorcontrib>Han, GuangBing</creatorcontrib><creatorcontrib>Gao, RuWei</creatorcontrib><collection>CrossRef</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies & Aerospace Collection</collection><collection>ProQuest Central</collection><collection>Technology Collection (ProQuest)</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Advanced Technologies & Aerospace Database</collection><collection>ProQuest Advanced Technologies & Aerospace Collection</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Science China. Physics, mechanics & astronomy</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liu, Min</au><au>Han, BaiPing</au><au>Han, GuangBing</au><au>Gao, RuWei</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Anisotropic HDDR-treated Nd2Fe14B-type powder</atitle><jtitle>Science China. Physics, mechanics & astronomy</jtitle><stitle>Sci. China Phys. Mech. Astron</stitle><date>2010-09-01</date><risdate>2010</risdate><volume>53</volume><issue>9</issue><spage>1590</spage><epage>1593</epage><pages>1590-1593</pages><issn>1674-7348</issn><eissn>1869-1927</eissn><abstract>Effects of the wheel speeds
v
and disproportionation time during the SC-HDDR process on the properties of Nd-Fe-B magnetic powders are investigated. It is found that the remanence
B
r
, coercivity
H
cj
and energy products (
BH
)
max
of magnetic powders all first increase to the maximum at
v
=3 m/s, and then decrease with enhancing
v
. This is attributed to the fact that the SC alloy flakes prepared by the wheel speed of 3 m/s display the optimized microstructure. This optimized SC alloy flakes without homogenizing treatment which carried out a short duration disproportionation treatment can prepare the evidently anisotropic powders. With prolonging disproportionation time, the alignment degree of anisotropy of magnetic powders gradually decreases. This is due to the fact that a short duration disproportionation reaction is beneficial to the disproportionated microstructure displaying the lamella crystals, and the lamella disproportionated microstructure is helpful to the formation of anisotropy. Our results confirm that the anisotropic HDDR Nd-Fe-B magnetic powders prepared directly from the SC alloy flakes without homogenizing treatment can be obtained.</abstract><cop>Heidelberg</cop><pub>SP Science China Press</pub><doi>10.1007/s11433-010-4072-4</doi><tpages>4</tpages></addata></record> |
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| source | Alma/SFX Local Collection; SpringerLink Journals - AutoHoldings |
| subjects | Alloy powders Anisotropy Astronomy Classical and Continuum Physics Coercivity Crystals Disproportionation Ferrous alloys Flakes HDDR process Homogenization Homogenizing Lamella Magnetic materials Magnetic properties Microstructure Neodymium Observations and Techniques Physics Physics and Astronomy Remanence Research Paper Wheels |
| title | Anisotropic HDDR-treated Nd2Fe14B-type powder |
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