METHOD FOR MANUFACTURING R-T-B BASED SINTERED MAGNET
A method for manufacturing an R-T-B based sintered magnet includes: 1) a step of preparing an R-T-B based sintered magnet material by sintering a molded body at a temperature of 1,000° C. or higher and 1,100° C. or lower, and then performing (a) temperature dropping to 500° C. at 10° C./min or less,...
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| creator | KUNIYOSHI, Futoshi ISHII, Rintaro SATOH, Teppei |
| description | A method for manufacturing an R-T-B based sintered magnet includes: 1) a step of preparing an R-T-B based sintered magnet material by sintering a molded body at a temperature of 1,000° C. or higher and 1,100° C. or lower, and then performing (a) temperature dropping to 500° C. at 10° C./min or less, or (b) temperature dropping to 500° C. at 10° C./min or less after performing a first heat treatment of holding at a first heat treatment temperature of 800° C. or higher and 950° C. or lower, the R-T-B based sintered magnet material satisfying compositional requirements; and 2) a heat treatment step of performing a second heat treatment by heating the R-T-B based sintered magnet material to a second heat treatment temperature of 650° C. or higher and 750° C. or lower, and then cooling the R-T-B based sintered magnet material to 400° C. at 5° C./min or more. |
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and 2) a heat treatment step of performing a second heat treatment by heating the R-T-B based sintered magnet material to a second heat treatment temperature of 650° C. or higher and 750° C. or lower, and then cooling the R-T-B based sintered magnet material to 400° C. at 5° C./min or more.</description><language>eng</language><subject>BASIC ELECTRIC ELEMENTS ; CASTING ; CHEMISTRY ; ELECTRICITY ; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS ; INDUCTANCES ; MAGNETS ; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS ; MAKING METALLIC POWDER ; MANUFACTURE OF ARTICLES FROM METALLIC POWDER ; METALLURGY ; METALLURGY OF IRON ; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS ; PERFORMING OPERATIONS ; POWDER METALLURGY ; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ; TRANSFORMERS ; TRANSPORTING ; WORKING METALLIC POWDER</subject><creationdate>2018</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=20180510&DB=EPODOC&CC=US&NR=2018130580A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76418</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20180510&DB=EPODOC&CC=US&NR=2018130580A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KUNIYOSHI, Futoshi</creatorcontrib><creatorcontrib>ISHII, Rintaro</creatorcontrib><creatorcontrib>SATOH, Teppei</creatorcontrib><title>METHOD FOR MANUFACTURING R-T-B BASED SINTERED MAGNET</title><description>A method for manufacturing an R-T-B based sintered magnet includes: 1) a step of preparing an R-T-B based sintered magnet material by sintering a molded body at a temperature of 1,000° C. or higher and 1,100° C. or lower, and then performing (a) temperature dropping to 500° C. at 10° C./min or less, or (b) temperature dropping to 500° C. at 10° C./min or less after performing a first heat treatment of holding at a first heat treatment temperature of 800° C. or higher and 950° C. or lower, the R-T-B based sintered magnet material satisfying compositional requirements; and 2) a heat treatment step of performing a second heat treatment by heating the R-T-B based sintered magnet material to a second heat treatment temperature of 650° C. or higher and 750° C. or lower, and then cooling the R-T-B based sintered magnet material to 400° C. at 5° C./min or more.</description><subject>BASIC ELECTRIC ELEMENTS</subject><subject>CASTING</subject><subject>CHEMISTRY</subject><subject>ELECTRICITY</subject><subject>GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS</subject><subject>INDUCTANCES</subject><subject>MAGNETS</subject><subject>MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS</subject><subject>MAKING METALLIC POWDER</subject><subject>MANUFACTURE OF ARTICLES FROM METALLIC POWDER</subject><subject>METALLURGY</subject><subject>METALLURGY OF IRON</subject><subject>MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS</subject><subject>PERFORMING OPERATIONS</subject><subject>POWDER METALLURGY</subject><subject>SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES</subject><subject>TRANSFORMERS</subject><subject>TRANSPORTING</subject><subject>WORKING METALLIC POWDER</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2018</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDDxdQ3x8HdRcPMPUvB19At1c3QOCQ3y9HNXCNIN0XVScHIMdnVRCPb0C3ENAjJ8Hd39XEN4GFjTEnOKU3mhNDeDsptriLOHbmpBfnxqcUFicmpeakl8aLCRgaGFobGBqYWBo6ExcaoAQwQn_g</recordid><startdate>20180510</startdate><enddate>20180510</enddate><creator>KUNIYOSHI, Futoshi</creator><creator>ISHII, Rintaro</creator><creator>SATOH, Teppei</creator><scope>EVB</scope></search><sort><creationdate>20180510</creationdate><title>METHOD FOR MANUFACTURING R-T-B BASED SINTERED MAGNET</title><author>KUNIYOSHI, Futoshi ; ISHII, Rintaro ; SATOH, Teppei</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US2018130580A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2018</creationdate><topic>BASIC ELECTRIC ELEMENTS</topic><topic>CASTING</topic><topic>CHEMISTRY</topic><topic>ELECTRICITY</topic><topic>GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS</topic><topic>INDUCTANCES</topic><topic>MAGNETS</topic><topic>MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS</topic><topic>MAKING METALLIC POWDER</topic><topic>MANUFACTURE OF ARTICLES FROM METALLIC POWDER</topic><topic>METALLURGY</topic><topic>METALLURGY OF IRON</topic><topic>MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS</topic><topic>PERFORMING OPERATIONS</topic><topic>POWDER METALLURGY</topic><topic>SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES</topic><topic>TRANSFORMERS</topic><topic>TRANSPORTING</topic><topic>WORKING METALLIC POWDER</topic><toplevel>online_resources</toplevel><creatorcontrib>KUNIYOSHI, Futoshi</creatorcontrib><creatorcontrib>ISHII, Rintaro</creatorcontrib><creatorcontrib>SATOH, Teppei</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KUNIYOSHI, Futoshi</au><au>ISHII, Rintaro</au><au>SATOH, Teppei</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD FOR MANUFACTURING R-T-B BASED SINTERED MAGNET</title><date>2018-05-10</date><risdate>2018</risdate><abstract>A method for manufacturing an R-T-B based sintered magnet includes: 1) a step of preparing an R-T-B based sintered magnet material by sintering a molded body at a temperature of 1,000° C. or higher and 1,100° C. or lower, and then performing (a) temperature dropping to 500° C. at 10° C./min or less, or (b) temperature dropping to 500° C. at 10° C./min or less after performing a first heat treatment of holding at a first heat treatment temperature of 800° C. or higher and 950° C. or lower, the R-T-B based sintered magnet material satisfying compositional requirements; and 2) a heat treatment step of performing a second heat treatment by heating the R-T-B based sintered magnet material to a second heat treatment temperature of 650° C. or higher and 750° C. or lower, and then cooling the R-T-B based sintered magnet material to 400° C. at 5° C./min or more.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BASIC ELECTRIC ELEMENTS CASTING CHEMISTRY ELECTRICITY GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INDUCTANCES MAGNETS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS POWDER METALLURGY SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES TRANSFORMERS TRANSPORTING WORKING METALLIC POWDER |
| title | METHOD FOR MANUFACTURING R-T-B BASED SINTERED MAGNET |
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