JPS57196502A - Material for permanent magnet - Google Patents

Material for permanent magnet

Info

Publication number
JPS57196502A
JPS57196502A JP56080788A JP8078881A JPS57196502A JP S57196502 A JPS57196502 A JP S57196502A JP 56080788 A JP56080788 A JP 56080788A JP 8078881 A JP8078881 A JP 8078881A JP S57196502 A JPS57196502 A JP S57196502A
Authority
JP
Japan
Prior art keywords
alloy
hour
grains
atmosphere
shaped
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
Application number
JP56080788A
Other languages
Japanese (ja)
Inventor
Tadakuni Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TOUHOKU KINZOKU KOGYO KK
Tokin Corp
Original Assignee
TOUHOKU KINZOKU KOGYO KK
Tohoku Metal Industries Ltd
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 TOUHOKU KINZOKU KOGYO KK, Tohoku Metal Industries Ltd filed Critical TOUHOKU KINZOKU KOGYO KK
Priority to JP56080788A priority Critical patent/JPS57196502A/en
Publication of JPS57196502A publication Critical patent/JPS57196502A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H01F1/0555—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together
    • H01F1/0557—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together sintered

Abstract

PURPOSE:To improve coercive force, residual magnetic flux density and the maximum energy product by adding Ti to a composition containing Sm, Co, Cu, Fe and Zr as main constituents in an R2T17 magnet. alloy (R is a rare-earth matal and T is a transition metal). CONSTITUTION:A material for a permanent magnet is prepared to have a composition wherein 2.7wt% Sm, 8wt% Cu, 14.5wt% Fe, 1.5wt% Zr, 0-1.0wt% Ti and Co the remainder, and it is melted into an alloy in an atmosphere of Ar by high-temperature heating. Next, this alloy is ground roughly and then is pulverized into grains having average sizes of about 4mu by using a ball mill. The grains are shaped in a magnetic field of 10kOe or above under the pressure of 1ton/cm<2>. A substance thus shaped is sintered for one hour at a temperature of 1,200 deg.C in the atmosphere of Ar, subjected thereafter to solution treatment for one hour at 1,160 deg.C, and then cooled rapidly. This sintered substance is subjected to heat treatment for one hour at 800 deg.C and cooled down to 300 deg.C at a cooling rate of 5 deg.C/min or below.
JP56080788A 1981-05-29 1981-05-29 Material for permanent magnet Pending JPS57196502A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56080788A JPS57196502A (en) 1981-05-29 1981-05-29 Material for permanent magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56080788A JPS57196502A (en) 1981-05-29 1981-05-29 Material for permanent magnet

Publications (1)

Publication Number Publication Date
JPS57196502A true JPS57196502A (en) 1982-12-02

Family

ID=13728182

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56080788A Pending JPS57196502A (en) 1981-05-29 1981-05-29 Material for permanent magnet

Country Status (1)

Country Link
JP (1) JPS57196502A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62260034A (en) * 1986-04-15 1987-11-12 Tohoku Metal Ind Ltd Permanent magnet
US5772796A (en) * 1995-11-20 1998-06-30 Ybm Magnex International, Inc. Temperature stable permanent magnet
US9087631B2 (en) 2008-11-19 2015-07-21 Kabushiki Kaisha Toshiba Permanent magnet and method of manufacturing the same, and motor and power generator using the same
US9774219B2 (en) 2009-08-06 2017-09-26 Kabushiki Kaisha Toshiba Permanent magnet, motor and electric generator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62260034A (en) * 1986-04-15 1987-11-12 Tohoku Metal Ind Ltd Permanent magnet
US5772796A (en) * 1995-11-20 1998-06-30 Ybm Magnex International, Inc. Temperature stable permanent magnet
US9087631B2 (en) 2008-11-19 2015-07-21 Kabushiki Kaisha Toshiba Permanent magnet and method of manufacturing the same, and motor and power generator using the same
US9774219B2 (en) 2009-08-06 2017-09-26 Kabushiki Kaisha Toshiba Permanent magnet, motor and electric generator

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