JP7232302B2 - 携行型時計用磁石、特に、ネオジム-鉄-ホウ素磁石、のための耐腐食保護 - Google Patents
携行型時計用磁石、特に、ネオジム-鉄-ホウ素磁石、のための耐腐食保護 Download PDFInfo
- Publication number
- JP7232302B2 JP7232302B2 JP2021164485A JP2021164485A JP7232302B2 JP 7232302 B2 JP7232302 B2 JP 7232302B2 JP 2021164485 A JP2021164485 A JP 2021164485A JP 2021164485 A JP2021164485 A JP 2021164485A JP 7232302 B2 JP7232302 B2 JP 7232302B2
- Authority
- JP
- Japan
- Prior art keywords
- iron
- neodymium
- watch
- boron
- magnet
- 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
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B37/00—Cases
- G04B37/22—Materials or processes of manufacturing pocket watch or wrist watch cases
- G04B37/223—Materials or processes of manufacturing pocket watch or wrist watch cases metallic cases coated with a nonmetallic layer
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/48—Ion implantation
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
- C23C14/021—Cleaning or etching treatments
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
- C23C14/028—Physical treatment to alter the texture of the substrate surface, e.g. grinding, polishing
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/0641—Nitrides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/08—Oxides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/08—Oxides
- C23C14/085—Oxides of iron group metals
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B43/00—Protecting clockworks by shields or other means against external influences, e.g. magnetic fields
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C5/00—Electric or magnetic means for converting oscillatory to rotary motion in time-pieces, i.e. electric or magnetic escapements
- G04C5/005—Magnetic or electromagnetic means
-
- G—PHYSICS
- G04—HOROLOGY
- G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
- G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
- G04D3/0074—Watchmakers' or watch-repairers' machines or tools for working materials for treatment of the material, e.g. surface treatment
- G04D3/0097—Watchmakers' or watch-repairers' machines or tools for working materials for treatment of the material, e.g. surface treatment for components of the means protecting the mechanism against external influences, e.g. cases
-
- 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
- H01F1/047—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
- H01F1/0572—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 with a protective layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0205—Magnetic circuits with PM in general
- H01F7/0221—Mounting means for PM, supporting, coating, encapsulating PM
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C2202/00—Physical properties
- C22C2202/02—Magnetic
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electromagnetism (AREA)
- Hard Magnetic Materials (AREA)
- Physical Vapour Deposition (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Description
- 耐食性が高い。
- 気体の消費が少ししかなく気体の排出がほとんど又はまったくないために、環境に優しい革新的な技術である。
- 処理が材料自体にて行われ、材料の表面を覆わないため、層間剥離のリスクがない。
- 再現性があり、調整が容易である。
- 磁気損失が無視できる程度しかない保護層が作られる。
- 適切な機械的強度がある保護層が作られる。
Claims (9)
- 携行型時計用磁石を腐食から保護する方法であって、
22~24重量%のネオジム、65~67重量%の鉄、及び0.1~2重量%のホウ素を含有するネオジム-鉄-ホウ素磁石に対して、
表面処理操作を行ってから、酸素環境において10kV~40kVの電圧で行う酸化させる処理であるイオン注入処理を行って、
不浸透性の酸化された表面層を作り、
これによって、前記携行型時計用磁石を製作し、前記携行型時計を使用する通常の条件下で、湿度の高い環境で前記携行型時計用磁石が腐食することを防ぐ
ことを特徴とする方法。 - 前記イオン注入処理は、酸素環境において、24kV~26kVの電圧、5mA~7mAのビーム電流、及び20×1016~30×1016イオン/cm2のドーズ量で行う
ことを特徴とする請求項1に記載の方法。 - 携行型時計用磁石を腐食から保護する方法であって、
22~24重量%のネオジム、65~67重量%の鉄、及び0.1~2重量%のホウ素を含有するネオジム-鉄-ホウ素磁石に対して、
表面処理操作を行ってから、窒素環境において10kV~40kVの電圧で行う窒化させる処理であるイオン注入処理を行って、
不浸透性の窒化された表面層を作り、
これによって、前記携行型時計用磁石を製作し、前記携行型時計を使用する通常の条件下で、湿度の高い環境で前記携行型時計用磁石が腐食することを防ぐ
ことを特徴とする方法。 - 前記イオン注入処理は、窒素環境において、24kV~26kVの電圧、5mA~7mAのビーム電流及び20×1016~30×1016イオン/cm2のドーズ量で行う
ことを特徴とする請求項3に記載の方法。 - 前記表面処理操作は、前記ネオジム-鉄-ホウ素磁石に対して、サンドブラストを行い、その後にアルコールですすぎ、空気で乾燥することによって行う
ことを特徴とする請求項1~4のいずれか一項に記載の方法。 - 前記サンドブラストは、200メッシュ~240メッシュの粒径であるアルミナ粒子を用いて、1.4×105~1.8×105Pa(1.4~1.8バール)の圧力で、流出位置とサンドブラストされる表面の間の距離が13mm~17mmであるように行う
ことを特徴とする請求項5に記載の方法。 - 1.0mm以下の厚み及び8.0mm以下の最大寸法を有するネオジム-鉄-ホウ素磁石に対して前記表面処理操作を行う
ことを特徴とする請求項1~6のいずれか一項に記載の方法。 - 0.6mm以下の厚み及び5.0mm以下の最大寸法を有するネオジム-鉄-ホウ素磁石に対して前記表面処理操作を行う
ことを特徴とする請求項7に記載の方法。 - 貫通穴が形成されており0.2mm~3.0mmである最大寸法を有するネオジム-鉄-ホウ素磁石に対して前記表面処理操作を行う
ことを特徴とする請求項7又は8に記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20207433.2 | 2020-11-13 | ||
EP20207433.2A EP4002017A1 (fr) | 2020-11-13 | 2020-11-13 | Protection anti-corrosion d aimants d horlogerie, notamment néodyme-fer-bore |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2022078952A JP2022078952A (ja) | 2022-05-25 |
JP7232302B2 true JP7232302B2 (ja) | 2023-03-02 |
Family
ID=73448865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2021164485A Active JP7232302B2 (ja) | 2020-11-13 | 2021-10-06 | 携行型時計用磁石、特に、ネオジム-鉄-ホウ素磁石、のための耐腐食保護 |
Country Status (5)
Country | Link |
---|---|
US (1) | US12012651B2 (ja) |
EP (1) | EP4002017A1 (ja) |
JP (1) | JP7232302B2 (ja) |
KR (1) | KR102536438B1 (ja) |
CN (1) | CN114481076B (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023083502A1 (fr) * | 2021-11-09 | 2023-05-19 | The Swatch Group Research And Development Ltd | Dispositif de fixation magnétique de deux éléments d'une boite de montre l'un avec l'autre et boite de montre comprenant ledit dispositif de fixation |
KR20230165155A (ko) | 2022-05-26 | 2023-12-05 | 주식회사 엘지에너지솔루션 | 배터리 모듈, 이를 포함하는 배터리 팩 및 자동차 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005285793A (ja) | 2004-03-26 | 2005-10-13 | Tdk Corp | 希土類磁石、その製造方法、及び多層体の製造方法 |
JP2014099988A (ja) | 2012-11-14 | 2014-05-29 | Seiko Epson Corp | 永久磁石、永久磁石の製造方法、ローター、モーターおよびロボット |
CN106756857A (zh) | 2016-11-16 | 2017-05-31 | 黄忠波 | 一种用于钕铁硼铁氧体防腐的处理方法 |
CN106756859A (zh) | 2016-11-23 | 2017-05-31 | 俞虹 | 用于钕铁硼铁氧体表面防腐方法 |
WO2020071446A1 (ja) | 2018-10-04 | 2020-04-09 | 日東電工株式会社 | 複数のモータ製品、モータ、モータ群、駆動装置、および磁石群 |
CN111441017A (zh) | 2020-04-24 | 2020-07-24 | 宁波招宝磁业有限公司 | 一种制备钕铁硼磁体表面防腐涂层的方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6139507A (ja) | 1984-07-30 | 1986-02-25 | Seiko Instr & Electronics Ltd | ネオジム鉄系永久磁石 |
US5154978A (en) * | 1989-03-22 | 1992-10-13 | Tdk Corporation | Highly corrosion-resistant rare-earth-iron magnets |
JPH04254313A (ja) | 1991-02-06 | 1992-09-09 | Seiko Electronic Components Ltd | 希土類磁石の製造方法 |
FR2768551B1 (fr) * | 1997-09-12 | 1999-11-05 | Rhodia Chimie Sa | Aimant plat comportant une couche de revetement et son procede de preparation |
JP2006049801A (ja) * | 2004-06-28 | 2006-02-16 | Aisin Seiki Co Ltd | 耐食性磁石及びその製造方法 |
CN101239387A (zh) * | 2007-02-08 | 2008-08-13 | 有研稀土新材料股份有限公司 | 一种耐热抗氧化含氮各向异性稀土永磁合金粉及其制备方法 |
JP2010238332A (ja) * | 2009-03-31 | 2010-10-21 | Hoya Corp | 磁気記録媒体 |
CN102864432A (zh) * | 2012-09-10 | 2013-01-09 | 顾建 | 一种用于钕铁硼铁氧体防腐的处理方法 |
CN102864430A (zh) * | 2012-09-10 | 2013-01-09 | 虞雪君 | 用于钕铁硼铁氧体表面防腐方法 |
EP2998799A1 (fr) * | 2014-09-18 | 2016-03-23 | Montres Breguet SA | Crantage sans contact |
EP3185082B1 (fr) * | 2015-12-02 | 2018-11-14 | Montres Breguet S.A. | Mouvement horloger comprenant un element de positionnement d'une partie mobile de ce mouvement horloger |
-
2020
- 2020-11-13 EP EP20207433.2A patent/EP4002017A1/fr active Pending
-
2021
- 2021-10-01 US US17/449,675 patent/US12012651B2/en active Active
- 2021-10-06 JP JP2021164485A patent/JP7232302B2/ja active Active
- 2021-10-28 KR KR1020210145759A patent/KR102536438B1/ko active IP Right Grant
- 2021-11-10 CN CN202111325179.4A patent/CN114481076B/zh active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005285793A (ja) | 2004-03-26 | 2005-10-13 | Tdk Corp | 希土類磁石、その製造方法、及び多層体の製造方法 |
JP2014099988A (ja) | 2012-11-14 | 2014-05-29 | Seiko Epson Corp | 永久磁石、永久磁石の製造方法、ローター、モーターおよびロボット |
CN106756857A (zh) | 2016-11-16 | 2017-05-31 | 黄忠波 | 一种用于钕铁硼铁氧体防腐的处理方法 |
CN106756859A (zh) | 2016-11-23 | 2017-05-31 | 俞虹 | 用于钕铁硼铁氧体表面防腐方法 |
WO2020071446A1 (ja) | 2018-10-04 | 2020-04-09 | 日東電工株式会社 | 複数のモータ製品、モータ、モータ群、駆動装置、および磁石群 |
CN111441017A (zh) | 2020-04-24 | 2020-07-24 | 宁波招宝磁业有限公司 | 一种制备钕铁硼磁体表面防腐涂层的方法 |
Also Published As
Publication number | Publication date |
---|---|
KR102536438B1 (ko) | 2023-05-26 |
JP2022078952A (ja) | 2022-05-25 |
KR20220065674A (ko) | 2022-05-20 |
CN114481076A (zh) | 2022-05-13 |
US20220154327A1 (en) | 2022-05-19 |
CN114481076B (zh) | 2024-04-12 |
EP4002017A1 (fr) | 2022-05-25 |
US12012651B2 (en) | 2024-06-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7232302B2 (ja) | 携行型時計用磁石、特に、ネオジム-鉄-ホウ素磁石、のための耐腐食保護 | |
Willenbruch et al. | An XPS and electrochemical study of the influence of molybdenum and nitrogen on the passivity of austenitic stainless steel | |
US9803139B1 (en) | Process for removing aluminum-silicon coatings from metallic structures, and related processes for preparing magnetic components | |
KR20110104631A (ko) | 고내식성 및 고경도 컬러 오스테나이트계 스테인리스강재 및 그 제조방법 | |
KR102074281B1 (ko) | 자석 | |
CN105002462A (zh) | 玫瑰金餐具镀膜方法 | |
CN104630693B (zh) | 一种奥氏体不锈钢表面的复合处理方法 | |
CN111020482A (zh) | 一种烧结NdFeB磁体表面致密化Al镀层及其制备方法 | |
JP4512603B2 (ja) | 耐ハロゲンガス性の半導体加工装置用部材 | |
Ku et al. | Corrosion resistance of NdFeB magnets coated by Al | |
KR20180023985A (ko) | 자석 | |
CN103789722B (zh) | 一种显著提高齿轮耐蚀性的化学热处理方法 | |
US3642517A (en) | Process for increasing the stability of protective chromium layers on metal | |
CN110359005A (zh) | 从基底移除陶瓷涂层的方法 | |
CN110993231A (zh) | 一种表层合金化高耐蚀烧结NdFeB磁体及其制备方法 | |
Baszkiewicz et al. | Pitting corrosion resistance of silicon-implanted stainless steels | |
CN103938241A (zh) | 一种增强钕铁硼永磁体防腐性能的方法 | |
CN113278912A (zh) | 一种硅终端金刚石表面的制备方法 | |
CN105039952A (zh) | 一种用于钕铁硼磁体镀镍表面的钝化发黑液及其应用 | |
CN109234774A (zh) | 一种增强钕铁硼永磁体防腐性能的方法 | |
Kumar et al. | Influence of Inhibitors on the Corrosion of Al and Al-composites in Chloride-containing Solutions-A Review | |
JPH04217304A (ja) | 耐蝕性に優れたZn拡散Pb含有焼結磁石とその製造方法 | |
JPH02294464A (ja) | 水素環境下用Ti材 | |
TW202348837A (zh) | 摻雜超微細反應型飛灰的混凝土及其抗腐蝕方法 | |
JP2023166967A (ja) | イオン衝撃による部品の表面状態の改質方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20211006 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20221108 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20230116 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20230207 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20230217 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 7232302 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |