WO1996019001A1 - Soft magnetic material - Google Patents
Soft magnetic material Download PDFInfo
- Publication number
- WO1996019001A1 WO1996019001A1 PCT/DE1995/001643 DE9501643W WO9619001A1 WO 1996019001 A1 WO1996019001 A1 WO 1996019001A1 DE 9501643 W DE9501643 W DE 9501643W WO 9619001 A1 WO9619001 A1 WO 9619001A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- percent
- mass
- cobalt
- soft magnetic
- iron
- Prior art date
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
- H01F1/12—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 soft-magnetic materials
- H01F1/14—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 soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
-
- 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
- H01F1/12—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 soft-magnetic materials
Definitions
- the invention relates to a soft magnetic material according to the preamble of the main claim.
- Such materials are known in the composition of iron (Fe) cobalt (Co) - filler material (X) with a Co content> 25 percent by mass.
- Fe iron
- Co cobalt
- X filler material
- Bs high saturation induction
- Various elements were used as alloy additive X, but the high cobalt contents mentioned were always added in order to achieve the desired high saturation induction, which entail poor formability and poor machinability.
- the desired small amount can only be achieved with an alloy content of additives of less than 2 to 3 percent by mass
- iron-chromium alloys do have the to prevent Eddy currents in iron have the desired high specific resistance values, but they are below about 1.7 Tesla (T) in saturation induction. Iron-silicon alloys also have relatively low saturation induction and are also very difficult to machine mechanically.
- the figure shows the saturation induction and the specific electrical resistance of different material groups in comparison.
- the soft magnetic material according to the invention with the characterizing features of the main claim has the advantage that a high saturation induction is achieved with a high specific electrical resistance and good mechanical workability.
- materials have proven to be particularly advantageous which, in addition to iron, contain 5 to 20 percent by mass of cobalt, as well as 1 to 7 percent by weight of aluminum and preferably additionally 0 to 8 percent by weight of manganese.
- another advantageous material contains 5 to 20 percent by weight cobalt and 1 to 7 percent by weight aluminum and preferably additionally 0 to 4 percent by weight vanadium.
- the own shares are not explicitly mentioned for the different alloys, they each form the completion to 100 percent by mass.
- the drawing shows a diagram of the areas of saturation induction Bs (T) and the specific electrical resistance Rspec ( ⁇ ) of different materials in comparison. It can be seen here that magnetic materials with a high cobalt content of 25 to 50 mass percent have a high saturation induction, but a very low specific electrical resistance. On the other hand, alloys with a chromium content of 13 percent by mass have a high specific electrical resistance, which is desirable because of the suppression of eddy currents in the magnet, but with too little induction of saturation. The known alloys of iron and silicon are also not in the desired diagram range with high saturation induction and at the same time high specific electrical resistance, as is characterized by the field Fe- (5-20) Co-X.
- the magnetic material according to the invention Compared to the known Fe-Co-X materials with Co contents between 25 and 50 mass percent and additional elements of ⁇ 2.5 mass percent vanadium or chromium, the magnetic material according to the invention has the desired high specific electrical resistance> 0.5 ⁇ m with high saturation induction at the same time> 1.9 T. Due to the low Co content of less than 20 percent by mass, the processability of the material is significantly better than that of conventional materials and at the same time the raw material price is significantly lower.
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Soft Magnetic Materials (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8518025A JPH11503873A (en) | 1994-12-14 | 1995-11-23 | Soft magnetic material |
EP95936962A EP0804796A1 (en) | 1994-12-14 | 1995-11-23 | Soft magnetic material |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4444482A DE4444482A1 (en) | 1994-12-14 | 1994-12-14 | Soft magnetic material |
DEP4444482.6 | 1994-12-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996019001A1 true WO1996019001A1 (en) | 1996-06-20 |
Family
ID=6535765
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1995/001643 WO1996019001A1 (en) | 1994-12-14 | 1995-11-23 | Soft magnetic material |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0804796A1 (en) |
JP (1) | JPH11503873A (en) |
KR (1) | KR980700669A (en) |
DE (1) | DE4444482A1 (en) |
WO (1) | WO1996019001A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001086665A1 (en) * | 2000-05-12 | 2001-11-15 | Imphy Ugine Precision | Iron-cobalt alloy, in particular for electromagnetic actuator mobile core and method for making same |
WO2002031844A2 (en) * | 2000-10-10 | 2002-04-18 | Crs Holdings, Inc. | Co-mn-fe soft magnetic alloys |
US8887376B2 (en) | 2005-07-20 | 2014-11-18 | Vacuumschmelze Gmbh & Co. Kg | Method for production of a soft-magnetic core having CoFe or CoFeV laminations and generator or motor comprising such a core |
US9057115B2 (en) | 2007-07-27 | 2015-06-16 | Vacuumschmelze Gmbh & Co. Kg | Soft magnetic iron-cobalt-based alloy and process for manufacturing it |
US11114226B2 (en) | 2015-05-04 | 2021-09-07 | Carpenter Technology Corporation | Ultra-low cobalt iron-cobalt magnetic alloys |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19928764B4 (en) * | 1999-06-23 | 2005-03-17 | Vacuumschmelze Gmbh | Low coercivity iron-cobalt alloy and process for producing iron-cobalt alloy semi-finished product |
DE10134056B8 (en) | 2001-07-13 | 2014-05-28 | Vacuumschmelze Gmbh & Co. Kg | Process for the production of nanocrystalline magnetic cores and apparatus for carrying out the process |
FR2896080B1 (en) * | 2006-01-12 | 2008-04-04 | Valeo Sys Controle Moteur Sas | ELECTROMAGNETIC ACTUATOR WITH PERMANENT MAGNETS PROVIDED IN V ACCORDING TO AN ELECTROMAGNETICALLY OPTIMIZED ARRANGEMENT |
EP1918407B1 (en) * | 2006-10-30 | 2008-12-24 | Vacuumschmelze GmbH & Co. KG | Iron-cobalt based soft magnetic alloy and method for its manufacture |
US8012270B2 (en) | 2007-07-27 | 2011-09-06 | Vacuumschmelze Gmbh & Co. Kg | Soft magnetic iron/cobalt/chromium-based alloy and process for manufacturing it |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61253348A (en) * | 1985-05-04 | 1986-11-11 | Daido Steel Co Ltd | Soft magnetic material |
DE4030791A1 (en) * | 1990-01-26 | 1991-08-01 | Alps Electric Co Ltd | Alloy with enhanced saturation flux density - contg. cobalt, germanium, aluminium and iron used for magnetic video items, has outstanding magnetic properties |
JPH06346201A (en) * | 1993-06-14 | 1994-12-20 | Daido Steel Co Ltd | Magnetic alloy having high saturation magnetic flux density and high electric resistance |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4116728B1 (en) * | 1976-09-02 | 1994-05-03 | Gen Electric | Treatment of amorphous magnetic alloys to produce a wide range of magnetic properties |
JPH0380490A (en) * | 1989-08-22 | 1991-04-05 | Victor Co Of Japan Ltd | Magnetic recording and reproducing device |
JP3623970B2 (en) * | 1992-06-17 | 2005-02-23 | 三井化学株式会社 | Fe-based soft magnetic alloy and manufacturing method |
-
1994
- 1994-12-14 DE DE4444482A patent/DE4444482A1/en not_active Ceased
-
1995
- 1995-11-23 JP JP8518025A patent/JPH11503873A/en active Pending
- 1995-11-23 EP EP95936962A patent/EP0804796A1/en not_active Ceased
- 1995-11-23 KR KR1019970703895A patent/KR980700669A/en not_active Application Discontinuation
- 1995-11-23 WO PCT/DE1995/001643 patent/WO1996019001A1/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61253348A (en) * | 1985-05-04 | 1986-11-11 | Daido Steel Co Ltd | Soft magnetic material |
DE4030791A1 (en) * | 1990-01-26 | 1991-08-01 | Alps Electric Co Ltd | Alloy with enhanced saturation flux density - contg. cobalt, germanium, aluminium and iron used for magnetic video items, has outstanding magnetic properties |
JPH06346201A (en) * | 1993-06-14 | 1994-12-20 | Daido Steel Co Ltd | Magnetic alloy having high saturation magnetic flux density and high electric resistance |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 011, no. 106 (C - 414) 3 April 1987 (1987-04-03) * |
PATENT ABSTRACTS OF JAPAN vol. 940, no. 012 * |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001086665A1 (en) * | 2000-05-12 | 2001-11-15 | Imphy Ugine Precision | Iron-cobalt alloy, in particular for electromagnetic actuator mobile core and method for making same |
FR2808806A1 (en) * | 2000-05-12 | 2001-11-16 | Imphy Ugine Precision | Iron-cobalt alloy used for electromagnetic actuator mobile core contains specified amounts of cobalt, silicon, aluminum, manganese and carbon |
US7128790B2 (en) | 2000-05-12 | 2006-10-31 | Imphy Ugine Precision | Iron-cobalt alloy, in particular for electromagnetic actuator mobile core and method for making same |
KR100711188B1 (en) * | 2000-05-12 | 2007-04-24 | 임피 위진느 프레씨지옹 | Iron-cobalt alloy and the products made thereof and the method for making the same |
US7819990B2 (en) | 2000-05-12 | 2010-10-26 | Imphy Ugine Precision | Iron-cobalt alloy, in particular for the moving core of electromagnetic actuators |
WO2002031844A2 (en) * | 2000-10-10 | 2002-04-18 | Crs Holdings, Inc. | Co-mn-fe soft magnetic alloys |
WO2002031844A3 (en) * | 2000-10-10 | 2002-11-21 | Crs Holdings Inc | Co-mn-fe soft magnetic alloys |
US8887376B2 (en) | 2005-07-20 | 2014-11-18 | Vacuumschmelze Gmbh & Co. Kg | Method for production of a soft-magnetic core having CoFe or CoFeV laminations and generator or motor comprising such a core |
US9057115B2 (en) | 2007-07-27 | 2015-06-16 | Vacuumschmelze Gmbh & Co. Kg | Soft magnetic iron-cobalt-based alloy and process for manufacturing it |
US11114226B2 (en) | 2015-05-04 | 2021-09-07 | Carpenter Technology Corporation | Ultra-low cobalt iron-cobalt magnetic alloys |
Also Published As
Publication number | Publication date |
---|---|
JPH11503873A (en) | 1999-03-30 |
KR980700669A (en) | 1998-03-30 |
EP0804796A1 (en) | 1997-11-05 |
DE4444482A1 (en) | 1996-06-27 |
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