JPS648205A - Production of melt-quenched alloy and production of rare earth magnet formed by using said alloy - Google Patents
Production of melt-quenched alloy and production of rare earth magnet formed by using said alloyInfo
- Publication number
- JPS648205A JPS648205A JP62160966A JP16096687A JPS648205A JP S648205 A JPS648205 A JP S648205A JP 62160966 A JP62160966 A JP 62160966A JP 16096687 A JP16096687 A JP 16096687A JP S648205 A JPS648205 A JP S648205A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- rare earth
- production
- melt
- disk
- 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.)
- Pending
Links
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
Abstract
PURPOSE:To produce a rare earth magnet having high magnet characteristics by spraying a molten alloy essentially consisting of a rare earth element, transition metal and boron, cooling the melt forcibly to form the flat coarse grains of the alloy and subjecting the alloy to molding in a magnetic field and sintering. CONSTITUTION:The molten alloy B essentially consisting of the rare earth element R (Nd), the transition metal T (Fe) and the boron (B) is injected from a nozzle A and is sprayed from a nozzle C by using gaseous Ar to form alloy liquid drops D. The alloy liquid drops D are striken against a disk-shaped cooling disk F and are thereby forcibly cooled to form the crystallized flat coarse particles (disk shape) E of the alloy. This alloy is molded in the magnetic field and is then sintered. The R2T14B series magnet contg. Nd, Fe and B as the essential component and having high magnet characteristics is thereby obtd.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62160966A JPS648205A (en) | 1987-06-30 | 1987-06-30 | Production of melt-quenched alloy and production of rare earth magnet formed by using said alloy |
US07/138,250 US4881986A (en) | 1986-11-26 | 1987-11-25 | Method for producing a rare earth metal-iron-boron anisotropic sintered magnet from rapidly-quenched rare earth metal-iron-boron alloy ribbon-like flakes |
EP87117457A EP0270934B1 (en) | 1986-11-26 | 1987-11-26 | A method for producing a rare earth metal-iron-boron anisotropic sintered magnet from rapidly-quenched rare earth metal-iron-boron alloy ribbon-like flakes |
DE8787117457T DE3780588T2 (en) | 1986-11-26 | 1987-11-26 | METHOD FOR PRODUCING A Sintered Anisotropic Rare-Earth Iron Boron Magnet With The Help Of Band-Like Chips From A Rare Earth Iron Boron Alloy. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62160966A JPS648205A (en) | 1987-06-30 | 1987-06-30 | Production of melt-quenched alloy and production of rare earth magnet formed by using said alloy |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS648205A true JPS648205A (en) | 1989-01-12 |
Family
ID=15726021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62160966A Pending JPS648205A (en) | 1986-11-26 | 1987-06-30 | Production of melt-quenched alloy and production of rare earth magnet formed by using said alloy |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS648205A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6818041B2 (en) | 2000-09-18 | 2004-11-16 | Neomax Co., Ltd | Magnetic alloy powder for permanent magnet and method for producing the same |
WO2005031799A2 (en) | 2003-09-29 | 2005-04-07 | Nikon Corporation | Exposure apparatus, exposure method, and device manufacturing method |
-
1987
- 1987-06-30 JP JP62160966A patent/JPS648205A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6818041B2 (en) | 2000-09-18 | 2004-11-16 | Neomax Co., Ltd | Magnetic alloy powder for permanent magnet and method for producing the same |
WO2005031799A2 (en) | 2003-09-29 | 2005-04-07 | Nikon Corporation | Exposure apparatus, exposure method, and device manufacturing method |
EP2312395A1 (en) | 2003-09-29 | 2011-04-20 | Nikon Corporation | Exposure apparatus, exposure method, and method for producing a device |
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