JPS57145962A - Sintered soft magnetic material - Google Patents
Sintered soft magnetic materialInfo
- Publication number
- JPS57145962A JPS57145962A JP3018581A JP3018581A JPS57145962A JP S57145962 A JPS57145962 A JP S57145962A JP 3018581 A JP3018581 A JP 3018581A JP 3018581 A JP3018581 A JP 3018581A JP S57145962 A JPS57145962 A JP S57145962A
- Authority
- JP
- Japan
- Prior art keywords
- iron
- phase
- sintered
- fine
- coarse
- 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.)
- Granted
Links
Landscapes
- Powder Metallurgy (AREA)
- Soft Magnetic Materials (AREA)
Abstract
PURPOSE: To obtain a high permeability magnetic material free from brittleness by providing a mixed grain structure composed of fine srystal grains and coarse grains of α-iron phase by γ→α transformation to a P-contg. sintered iron body showing the highest magnetic characteristic values.
CONSTITUTION: When a sintered iron body contg. 0.5W1.4wt% P is obtd., the temp. raising speed of the sintered body is regulated to ≥ about 10°C/sec, or about 0.005W0.05wt% C is added beforehand. The sintering of only α-iron phase proceeds several 100 times as rapidly as that of γ-iron phase, and crystals grow larger, so a coarse structure is formed as a whole. In case of the sintering of α+γ phase, since α-iron precipitated from γ-iron is precipitated from the grain boundaries of the γ-iron, fine grains appear, and a mixed grain structure composed of coarse crystals and fine crystals is provided.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3018581A JPS57145962A (en) | 1981-03-03 | 1981-03-03 | Sintered soft magnetic material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3018581A JPS57145962A (en) | 1981-03-03 | 1981-03-03 | Sintered soft magnetic material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57145962A true JPS57145962A (en) | 1982-09-09 |
JPS6111307B2 JPS6111307B2 (en) | 1986-04-02 |
Family
ID=12296692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3018581A Granted JPS57145962A (en) | 1981-03-03 | 1981-03-03 | Sintered soft magnetic material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57145962A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2226520A (en) * | 1939-11-29 | 1940-12-24 | Gen Motors Corp | Iron article and method of making same |
-
1981
- 1981-03-03 JP JP3018581A patent/JPS57145962A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2226520A (en) * | 1939-11-29 | 1940-12-24 | Gen Motors Corp | Iron article and method of making same |
Also Published As
Publication number | Publication date |
---|---|
JPS6111307B2 (en) | 1986-04-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0748767A3 (en) | Rare earth metal sulfide based compositions, their preparation and use | |
JPS5638402A (en) | High density sintered magnetic body and its manufacture | |
JPS5620142A (en) | Manufacture of high density sintered iron-copper alloy | |
KR880005635A (en) | Manufacturing method of permanent magnet | |
JPS57145962A (en) | Sintered soft magnetic material | |
GB1105788A (en) | Improvements relating to ferrimagnetic materials | |
JPS5655526A (en) | Pellet containing coarse-grained ore | |
JPS5489918A (en) | High permeability amorphous alloy | |
JPS53142301A (en) | Treating method for finely powdered raw material | |
GB1086406A (en) | Improvements relating to ferrimagnetic material | |
Hibst | Process for the Preparation of Fine Isotropical Ferrite Powder Having a Spinel Structure | |
JPS56124203A (en) | Manufacture of magnetic material | |
JPS57198239A (en) | Manufacture of sintered magnetic iron-silicon material | |
JPS53112209A (en) | Sintered slide material | |
JPS579838A (en) | Manufacture of sintered ore with high reducibility | |
JPS57185947A (en) | Amorphous alloy | |
JPS5288211A (en) | Method and equipment for continuous treatment of magnetic material | |
Jonsson | Influence of the Carbon Content on the Gamma-Phase of a WC--Gamma--Co Cemented Carbide(ISO P 10) During Sintering | |
Shchegoleva et al. | The Relationship Between the Structure and Magnetic Properties of Sm (CoFeCuZr) sub 7. 4 Magnets. I.--The Microstructure and Magnetic Properties of Sintered Sm (CoFeCuZr) sub 7. 4 Magnets | |
GB1238831A (en) | ||
JPS56158837A (en) | Manufacture of magnetic material | |
JPS53144412A (en) | Method of producing sintered ore | |
JPS5358411A (en) | Preparation of iron alloy sintering material | |
FR2346078A1 (en) | Fibrous structure iron powder - having low bulk density, useful for sintered prods. | |
Singal et al. | Effect of Iron and Cobalt Additions on the Densification of Cu--7 Al Premix |