KR101906068B1 - R-Fe-B류 소결 자성체 제조방법 - Google Patents

R-Fe-B류 소결 자성체 제조방법 Download PDF

Info

Publication number
KR101906068B1
KR101906068B1 KR1020170105791A KR20170105791A KR101906068B1 KR 101906068 B1 KR101906068 B1 KR 101906068B1 KR 1020170105791 A KR1020170105791 A KR 1020170105791A KR 20170105791 A KR20170105791 A KR 20170105791A KR 101906068 B1 KR101906068 B1 KR 101906068B1
Authority
KR
South Korea
Prior art keywords
rxe
magnetic body
rare earth
magnetic
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
KR1020170105791A
Other languages
English (en)
Korean (ko)
Other versions
KR20180025198A (ko
Inventor
칭카이 왕
동동 리
구오치앙 젱
밍제 장
Original Assignee
얀타이 정하이 마그네틱 머티리얼 컴퍼니 리미티드
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 얀타이 정하이 마그네틱 머티리얼 컴퍼니 리미티드 filed Critical 얀타이 정하이 마그네틱 머티리얼 컴퍼니 리미티드
Publication of KR20180025198A publication Critical patent/KR20180025198A/ko
Application granted granted Critical
Publication of KR101906068B1 publication Critical patent/KR101906068B1/ko
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/026—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets protecting methods against environmental influences, e.g. oxygen, by surface treatment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
    • H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
    • B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/0536—Alloys characterised by their composition containing rare earth metals sintered
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/06—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/08—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
    • H01F1/086—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together sintered
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0293—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets diffusion of rare earth elements, e.g. Tb, Dy or Ho, into permanent magnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
    • B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
    • B22F2007/042—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal characterised by the layer forming method
    • B22F2007/047—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal characterised by the layer forming method non-pressurised baking of the paste or slurry containing metal powder

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Composite Materials (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
KR1020170105791A 2016-08-31 2017-08-22 R-Fe-B류 소결 자성체 제조방법 Active KR101906068B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610776183.5A CN106158347B (zh) 2016-08-31 2016-08-31 一种制备R‑Fe‑B类烧结磁体的方法
CN201610776183.5 2016-08-31

Publications (2)

Publication Number Publication Date
KR20180025198A KR20180025198A (ko) 2018-03-08
KR101906068B1 true KR101906068B1 (ko) 2018-11-30

Family

ID=57344112

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020170105791A Active KR101906068B1 (ko) 2016-08-31 2017-08-22 R-Fe-B류 소결 자성체 제조방법

Country Status (5)

Country Link
US (1) US20180061540A1 (enExample)
EP (1) EP3291264B1 (enExample)
JP (1) JP6595542B2 (enExample)
KR (1) KR101906068B1 (enExample)
CN (1) CN106158347B (enExample)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107026003B (zh) * 2017-04-24 2020-02-07 烟台正海磁性材料股份有限公司 一种烧结钕铁硼磁体的制备方法
CN107516595A (zh) * 2017-09-19 2017-12-26 江苏晨朗电子集团有限公司 一种用于烧结钕铁硼产品的表面渗镝、铽工艺及搅拌装置
CN108461272B (zh) * 2018-03-20 2020-05-22 北京工业大学 一种用于形成氢化物纳米颗粒表面涂层的技术
CN108666115A (zh) * 2018-05-08 2018-10-16 苏州世诺新材料科技有限公司 一种低损耗非晶、纳米晶磁片及其制备方法
CN108831655B (zh) * 2018-07-20 2020-02-07 烟台首钢磁性材料股份有限公司 一种提高钕铁硼烧结永磁体矫顽力的方法
CN108962582B (zh) * 2018-07-20 2020-07-07 烟台首钢磁性材料股份有限公司 一种钕铁硼磁体矫顽力提升方法
CN109887696B (zh) * 2019-01-15 2021-01-29 宁波金鸡强磁股份有限公司 一种涂覆于钕铁硼磁体的有机浆料及高矫顽力钕铁硼磁体的制备
CN109935462B (zh) * 2019-03-12 2022-02-11 宁波雄海稀土速凝技术有限公司 晶界扩散重稀土钕铁硼磁体的制备方法及其钕铁硼磁体
JP7331470B2 (ja) * 2019-06-04 2023-08-23 Tdk株式会社 Ｒ‐ｔ‐ｂ系永久磁石の製造方法
CN110517882B (zh) * 2019-08-15 2021-06-18 安徽省瀚海新材料股份有限公司 一种钕铁硼表面渗铽方法
CN112750612B (zh) * 2020-02-17 2022-08-05 北京京磁电工科技有限公司 钕铁硼表面渗透铽或镝的工艺方法
CN111243807B (zh) * 2020-02-26 2021-08-27 厦门钨业股份有限公司 一种钕铁硼磁体材料、原料组合物及制备方法和应用
CN111326307B (zh) * 2020-03-17 2021-12-28 宁波金鸡强磁股份有限公司 一种渗透磁体用的涂覆材料及高矫顽力钕铁硼磁体的制备方法
CN113035483B (zh) * 2021-04-23 2024-06-04 宁波佳丰磁材科技有限公司 一种晶界扩散钕铁硼磁铁及其制备方法
CN115602399B (zh) 2021-06-28 2025-11-14 烟台正海磁性材料股份有限公司 一种R-Fe-B烧结磁体及其制备方法和应用
CN113593800B (zh) * 2021-07-20 2023-01-10 烟台正海磁性材料股份有限公司 一种高性能烧结钕铁硼磁体及其制备方法
CN114823118B (zh) * 2022-06-27 2022-10-25 宁波科宁达工业有限公司 一种稀土永磁体及其制备方法
CN119252635A (zh) * 2024-09-09 2025-01-03 安徽大学 一种晶界扩散钕铁硼磁体基材及晶界扩散钕铁硼磁体的制备方法
CN120126887A (zh) * 2025-03-20 2025-06-10 宁波科宁达工业有限公司 一种钕铁硼系磁体、磁体基体及钕铁硼系磁体的制备方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011122667A1 (ja) * 2010-03-30 2011-10-06 Tdk株式会社 希土類焼結磁石、その製造方法、モーター、及び自動車

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005344165A (ja) * 2004-06-03 2005-12-15 Tdk Corp 希土類焼結磁石の製造方法、熱処理方法
EP1830371B1 (en) * 2004-10-19 2016-07-27 Shin-Etsu Chemical Co., Ltd. Method for producing rare earth permanent magnet material
TWI413136B (zh) 2005-03-23 2013-10-21 Shinetsu Chemical Co 稀土族永久磁體
CN103295713B (zh) 2006-01-31 2016-08-10 日立金属株式会社 R－Fe－B类稀土烧结磁铁
CN101651038B (zh) 2006-03-03 2012-06-06 日立金属株式会社 扩散处理装置
JP4840606B2 (ja) 2006-11-17 2011-12-21 信越化学工業株式会社 希土類永久磁石の製造方法
JP2010238712A (ja) * 2009-03-30 2010-10-21 Tdk Corp 希土類焼結磁石の製造方法
US9154004B2 (en) * 2010-03-04 2015-10-06 Tdk Corporation Rare earth sintered magnet and motor
EP2892063B1 (en) * 2012-08-31 2018-08-15 Shin-Etsu Chemical Co., Ltd. Production method for rare earth permanent magnet
US10179955B2 (en) * 2012-08-31 2019-01-15 Shin-Etsu Chemical Co., Ltd. Production method for rare earth permanent magnet
CN103258633B (zh) * 2013-05-30 2015-10-28 烟台正海磁性材料股份有限公司 一种R-Fe-B系烧结磁体的制备方法
US10109403B2 (en) * 2013-08-09 2018-10-23 Tdk Corporation R-T-B based sintered magnet and motor
WO2015058654A1 (zh) * 2013-10-22 2015-04-30 北京中科三环高技术股份有限公司 用于制备R-Fe-B系烧结磁体的粉末组合物及方法
CN103646773B (zh) * 2013-11-21 2016-11-09 烟台正海磁性材料股份有限公司 一种R-Fe-B类烧结磁体的制造方法
JP6169032B2 (ja) * 2014-04-08 2017-07-26 トヨタ自動車株式会社 非磁性スラリー組成物及び希土類磁石の製造方法
CN105070498B (zh) * 2015-08-28 2016-12-07 包头天和磁材技术有限责任公司 提高磁体矫顽力的方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011122667A1 (ja) * 2010-03-30 2011-10-06 Tdk株式会社 希土類焼結磁石、その製造方法、モーター、及び自動車

Also Published As

Publication number Publication date
EP3291264C0 (en) 2023-06-07
JP6595542B2 (ja) 2019-10-23
EP3291264A1 (en) 2018-03-07
CN106158347A (zh) 2016-11-23
JP2018082146A (ja) 2018-05-24
KR20180025198A (ko) 2018-03-08
EP3291264B1 (en) 2023-06-07
US20180061540A1 (en) 2018-03-01
CN106158347B (zh) 2017-10-17

Similar Documents

Publication Publication Date Title
KR101906068B1 (ko) R-Fe-B류 소결 자성체 제조방법
EP2808877B1 (en) Method for preparing R-Fe-B based sintered magnet
KR101906069B1 (ko) R-Fe-B류 소결 자성체 제조방법
KR101906067B1 (ko) R-Fe-B류 소결 자성체 제조방법
CN106128672B (zh) 一种扩散烧结连续化RE‑Fe‑B磁体及其制备方法
EP3591675B1 (en) Method for producing heavy rare earth grain-boundary-diffused re-fe-b-based rare earth magnet
CN111326307A (zh) 一种渗透磁体用的涂覆材料及高矫顽力钕铁硼磁体的制备方法
CN109616310B (zh) 一种高矫顽力烧结钕铁硼永磁材料及其制造方法
KR101543111B1 (ko) NdFeB 영구자석 및 그 제조방법
CN114284018B (zh) 钕铁硼磁体及其制备方法和应用
JP2018093202A (ja) Ｒ−ｔ−ｂ系永久磁石
CN110323053B (zh) 一种R-Fe-B系烧结磁体及其制备方法
CN106601407A (zh) 提高钕铁硼磁体矫顽力的方法
KR20150052153A (ko) 희토류 영구자석의 제조 방법
CN107275028A (zh) 晶界扩散钕铁硼磁体的界面调控方法
CN114974779B (zh) 一种钐基稀土永磁材料及其制备方法与应用
CN102360920B (zh) 一种钕铁硼永磁的制备方法
CN108962524B (zh) 一种烧结取向磁体渗透处理用组合物、用途及方法
EP4002398A1 (en) A method for preparing sintered ndfeb magnets
EP4345852A1 (en) R-fe-b sintered magnet, and preparation method therefor and use thereof
KR101567169B1 (ko) 스퍼터 분말을 이용하는 영구자석의 제조방법
CN119252635A (zh) 一种晶界扩散钕铁硼磁体基材及晶界扩散钕铁硼磁体的制备方法
KR20230172100A (ko) 희토류 영구자석의 제조 방법 및 이에 의해 제조된 희토류 영구자석
CN113555176A (zh) 稀土永磁体的制造方法和由此制造的稀土永磁体
CN111599561B (zh) 一种钕铁硼磁体及其制备方法

Legal Events

Date Code Title Description
A201 Request for examination
PA0109 Patent application

St.27 status event code: A-0-1-A10-A12-nap-PA0109

PA0201 Request for examination

St.27 status event code: A-1-2-D10-D11-exm-PA0201

PG1501 Laying open of application

St.27 status event code: A-1-1-Q10-Q12-nap-PG1501

E902 Notification of reason for refusal
PE0902 Notice of grounds for rejection

St.27 status event code: A-1-2-D10-D21-exm-PE0902

E13-X000 Pre-grant limitation requested

St.27 status event code: A-2-3-E10-E13-lim-X000

P11-X000 Amendment of application requested

St.27 status event code: A-2-2-P10-P11-nap-X000

P13-X000 Application amended

St.27 status event code: A-2-2-P10-P13-nap-X000

E701 Decision to grant or registration of patent right
PE0701 Decision of registration

St.27 status event code: A-1-2-D10-D22-exm-PE0701

GRNT Written decision to grant
PR0701 Registration of establishment

St.27 status event code: A-2-4-F10-F11-exm-PR0701

PR1002 Payment of registration fee

St.27 status event code: A-2-2-U10-U11-oth-PR1002

Fee payment year number: 1

PG1601 Publication of registration

St.27 status event code: A-4-4-Q10-Q13-nap-PG1601

R17-X000 Change to representative recorded

St.27 status event code: A-5-5-R10-R17-oth-X000

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 4

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 5

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 6

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 7

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 8