Nano-porous alloys with strong permanent magnetism and preparation method therefor
A kind of nano-porous Fe-Pt alloys with strong permanent magnetism and a preparation method therefor. The nano-porous Fe-Pt alloys have the composition of FewCoxPtyPdz and are composed of an ordered hard magnetic L10-FePt phase, and have an integrated doubly-connected nano-porous structure with pore...
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| creator | Li, Yanhui Zhang, Wei Ma, Dianguo Wang, Yingmin |
| description | A kind of nano-porous Fe-Pt alloys with strong permanent magnetism and a preparation method therefor. The nano-porous Fe-Pt alloys have the composition of FewCoxPtyPdz and are composed of an ordered hard magnetic L10-FePt phase, and have an integrated doubly-connected nano-porous structure with pore sizes of 10-50 nm, and ligament thicknesses of 20-80 nm. Under an applied magnetic field of 50 kOe, the coercivity, magnetization intensity and remanence of the alloys are 13.4-18.5 kOe, 40.4-56.3 emu/g and 28.3-37.4 emu/g, respectively. The master alloy ingots are prepared using electric arc melting or induction melting; the alloy ribbons are prepared using the single-roller melt-spinning equipment; the precursors mainly containing nano-composite phases of hard magnetic L10-FePt and soft magnetic Fe2B are obtained directly by the melt-spinning or obtained by conducting vacuum annealing on the melt-spun ribbons; and the nano-porous Fe-Pt alloys with a single L10-FePt phase are obtained by the electrochemical dealloying technique, thereby filling in the technical blank of nano-porous metal materials with permanent magnetism. |
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The nano-porous Fe-Pt alloys have the composition of FewCoxPtyPdz and are composed of an ordered hard magnetic L10-FePt phase, and have an integrated doubly-connected nano-porous structure with pore sizes of 10-50 nm, and ligament thicknesses of 20-80 nm. Under an applied magnetic field of 50 kOe, the coercivity, magnetization intensity and remanence of the alloys are 13.4-18.5 kOe, 40.4-56.3 emu/g and 28.3-37.4 emu/g, respectively. The master alloy ingots are prepared using electric arc melting or induction melting; the alloy ribbons are prepared using the single-roller melt-spinning equipment; the precursors mainly containing nano-composite phases of hard magnetic L10-FePt and soft magnetic Fe2B are obtained directly by the melt-spinning or obtained by conducting vacuum annealing on the melt-spun ribbons; and the nano-porous Fe-Pt alloys with a single L10-FePt phase are obtained by the electrochemical dealloying technique, thereby filling in the technical blank of nano-porous metal materials with permanent magnetism.</description><language>eng</language><subject>ALLOYS ; BASIC ELECTRIC ELEMENTS ; CHEMISTRY ; ELECTRICITY ; FERROUS OR NON-FERROUS ALLOYS ; INDUCTANCES ; MAGNETS ; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES ; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES ; METALLURGY ; NANOTECHNOLOGY ; PERFORMING OPERATIONS ; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES ; TRANSFORMERS ; TRANSPORTING ; TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><creationdate>2020</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20200714&DB=EPODOC&CC=US&NR=10714244B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20200714&DB=EPODOC&CC=US&NR=10714244B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Li, Yanhui</creatorcontrib><creatorcontrib>Zhang, Wei</creatorcontrib><creatorcontrib>Ma, Dianguo</creatorcontrib><creatorcontrib>Wang, Yingmin</creatorcontrib><title>Nano-porous alloys with strong permanent magnetism and preparation method therefor</title><description>A kind of nano-porous Fe-Pt alloys with strong permanent magnetism and a preparation method therefor. The nano-porous Fe-Pt alloys have the composition of FewCoxPtyPdz and are composed of an ordered hard magnetic L10-FePt phase, and have an integrated doubly-connected nano-porous structure with pore sizes of 10-50 nm, and ligament thicknesses of 20-80 nm. Under an applied magnetic field of 50 kOe, the coercivity, magnetization intensity and remanence of the alloys are 13.4-18.5 kOe, 40.4-56.3 emu/g and 28.3-37.4 emu/g, respectively. The master alloy ingots are prepared using electric arc melting or induction melting; the alloy ribbons are prepared using the single-roller melt-spinning equipment; the precursors mainly containing nano-composite phases of hard magnetic L10-FePt and soft magnetic Fe2B are obtained directly by the melt-spinning or obtained by conducting vacuum annealing on the melt-spun ribbons; and the nano-porous Fe-Pt alloys with a single L10-FePt phase are obtained by the electrochemical dealloying technique, thereby filling in the technical blank of nano-porous metal materials with permanent magnetism.</description><subject>ALLOYS</subject><subject>BASIC ELECTRIC ELEMENTS</subject><subject>CHEMISTRY</subject><subject>ELECTRICITY</subject><subject>FERROUS OR NON-FERROUS ALLOYS</subject><subject>INDUCTANCES</subject><subject>MAGNETS</subject><subject>MANUFACTURE OR TREATMENT OF NANOSTRUCTURES</subject><subject>MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES</subject><subject>METALLURGY</subject><subject>NANOTECHNOLOGY</subject><subject>PERFORMING OPERATIONS</subject><subject>SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES</subject><subject>SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES</subject><subject>TRANSFORMERS</subject><subject>TRANSPORTING</subject><subject>TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2020</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNzD0KwkAQQOFtLES9w3iAgIkL9hHFysKfOgxmkg3sziyzI-LttfAAVq_5eHN3OSNLlUXlWQBjlHeB12QBiqnwCJk0IRMbJByZbCoJkHvIShkVbRKGRBakBwukNIgu3WzAWGj168Ktj4fb_lRRlo5Kxgd9R939Wm92tW-8b5vtP-YDikw5EA</recordid><startdate>20200714</startdate><enddate>20200714</enddate><creator>Li, Yanhui</creator><creator>Zhang, Wei</creator><creator>Ma, Dianguo</creator><creator>Wang, Yingmin</creator><scope>EVB</scope></search><sort><creationdate>20200714</creationdate><title>Nano-porous alloys with strong permanent magnetism and preparation method therefor</title><author>Li, Yanhui ; Zhang, Wei ; Ma, Dianguo ; Wang, Yingmin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US10714244B23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2020</creationdate><topic>ALLOYS</topic><topic>BASIC ELECTRIC ELEMENTS</topic><topic>CHEMISTRY</topic><topic>ELECTRICITY</topic><topic>FERROUS OR NON-FERROUS ALLOYS</topic><topic>INDUCTANCES</topic><topic>MAGNETS</topic><topic>MANUFACTURE OR TREATMENT OF NANOSTRUCTURES</topic><topic>MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES</topic><topic>METALLURGY</topic><topic>NANOTECHNOLOGY</topic><topic>PERFORMING OPERATIONS</topic><topic>SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES</topic><topic>SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES</topic><topic>TRANSFORMERS</topic><topic>TRANSPORTING</topic><topic>TREATMENT OF ALLOYS OR NON-FERROUS METALS</topic><toplevel>online_resources</toplevel><creatorcontrib>Li, Yanhui</creatorcontrib><creatorcontrib>Zhang, Wei</creatorcontrib><creatorcontrib>Ma, Dianguo</creatorcontrib><creatorcontrib>Wang, Yingmin</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Li, Yanhui</au><au>Zhang, Wei</au><au>Ma, Dianguo</au><au>Wang, Yingmin</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Nano-porous alloys with strong permanent magnetism and preparation method therefor</title><date>2020-07-14</date><risdate>2020</risdate><abstract>A kind of nano-porous Fe-Pt alloys with strong permanent magnetism and a preparation method therefor. The nano-porous Fe-Pt alloys have the composition of FewCoxPtyPdz and are composed of an ordered hard magnetic L10-FePt phase, and have an integrated doubly-connected nano-porous structure with pore sizes of 10-50 nm, and ligament thicknesses of 20-80 nm. Under an applied magnetic field of 50 kOe, the coercivity, magnetization intensity and remanence of the alloys are 13.4-18.5 kOe, 40.4-56.3 emu/g and 28.3-37.4 emu/g, respectively. The master alloy ingots are prepared using electric arc melting or induction melting; the alloy ribbons are prepared using the single-roller melt-spinning equipment; the precursors mainly containing nano-composite phases of hard magnetic L10-FePt and soft magnetic Fe2B are obtained directly by the melt-spinning or obtained by conducting vacuum annealing on the melt-spun ribbons; and the nano-porous Fe-Pt alloys with a single L10-FePt phase are obtained by the electrochemical dealloying technique, thereby filling in the technical blank of nano-porous metal materials with permanent magnetism.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ALLOYS BASIC ELECTRIC ELEMENTS CHEMISTRY ELECTRICITY FERROUS OR NON-FERROUS ALLOYS INDUCTANCES MAGNETS MANUFACTURE OR TREATMENT OF NANOSTRUCTURES MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES METALLURGY NANOTECHNOLOGY PERFORMING OPERATIONS SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES TRANSFORMERS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS |
| title | Nano-porous alloys with strong permanent magnetism and preparation method therefor |
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