EP0240600A1 - Alliages métalliques vitreux à caractéristiques perminvar - Google Patents

Alliages métalliques vitreux à caractéristiques perminvar Download PDF

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Publication number: EP0240600A1
Authority: EP; European Patent Office
Prior art keywords: ranges; alloy; glassy; alloys; magnetic
Prior art date: 1986-01-08
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

Application number

EP19860115434

Other languages

German (de)

English (en)

Other versions

EP0240600B1 (fr

Inventor

Ryusuke C/O Allied Corporation Hasegawa

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.)

Honeywell International Inc

Original Assignee

Allied Corp

AlliedSignal Inc

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.)

1986-01-08

Filing date

1986-11-07

Publication date

1987-10-14

1986-11-07 Application filed by Allied Corp, AlliedSignal Inc filed Critical Allied Corp

1987-10-14 Publication of EP0240600A1 publication Critical patent/EP0240600A1/fr

1992-05-13 Application granted granted Critical

1992-05-13 Publication of EP0240600B1 publication Critical patent/EP0240600B1/fr

Status Expired legal-status Critical Current

Links

229910001092 metal group alloy Inorganic materials 0.000 title abstract description 13
239000005300 metallic glass Substances 0.000 title abstract description 13
229910045601 alloy Inorganic materials 0.000 claims abstract description 52
239000000956 alloy Substances 0.000 claims abstract description 52
230000005291 magnetic effect Effects 0.000 claims abstract description 26
230000035699 permeability Effects 0.000 claims abstract description 16
230000005284 excitation Effects 0.000 claims abstract description 8
238000002425 crystallisation Methods 0.000 claims abstract description 7
230000008025 crystallization Effects 0.000 claims abstract description 7
229910052750 molybdenum Inorganic materials 0.000 claims abstract description 6
229910052804 chromium Inorganic materials 0.000 claims abstract description 3
229910052748 manganese Inorganic materials 0.000 claims abstract description 3
229910052758 niobium Inorganic materials 0.000 claims abstract description 3
229910001004 magnetic alloy Inorganic materials 0.000 claims description 12
238000010438 heat treatment Methods 0.000 claims description 7
238000001816 cooling Methods 0.000 claims description 5
230000006698 induction Effects 0.000 abstract description 12
239000000203 mixture Substances 0.000 abstract description 9
XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 36
239000000463 material Substances 0.000 description 17
PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 17
229910000889 permalloy Inorganic materials 0.000 description 7
229910052759 nickel Inorganic materials 0.000 description 6
229910052710 silicon Inorganic materials 0.000 description 6
229910052742 iron Inorganic materials 0.000 description 4
238000000034 method Methods 0.000 description 4
229910000702 sendust Inorganic materials 0.000 description 4
229910052782 aluminium Inorganic materials 0.000 description 3
230000005294 ferromagnetic effect Effects 0.000 description 3
239000000696 magnetic material Substances 0.000 description 3
229910052751 metal Inorganic materials 0.000 description 3
239000002184 metal Substances 0.000 description 3
229910052715 tantalum Inorganic materials 0.000 description 3
ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
238000007792 addition Methods 0.000 description 2
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
238000013459 approach Methods 0.000 description 2
230000015572 biosynthetic process Effects 0.000 description 2
229910052796 boron Inorganic materials 0.000 description 2
229910052799 carbon Inorganic materials 0.000 description 2
230000008859 change Effects 0.000 description 2
229910052802 copper Inorganic materials 0.000 description 2
239000010949 copper Substances 0.000 description 2
230000000694 effects Effects 0.000 description 2
238000005516 engineering process Methods 0.000 description 2
230000005415 magnetization Effects 0.000 description 2
238000005259 measurement Methods 0.000 description 2
239000000155 melt Substances 0.000 description 2
229910052752 metalloid Inorganic materials 0.000 description 2
150000002738 metalloids Chemical class 0.000 description 2
239000011733 molybdenum Substances 0.000 description 2
238000005498 polishing Methods 0.000 description 2
239000010703 silicon Substances 0.000 description 2
238000004804 winding Methods 0.000 description 2
241001279686 Allium moly Species 0.000 description 1
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
229910020598 Co Fe Inorganic materials 0.000 description 1
229910002519 Co-Fe Inorganic materials 0.000 description 1
229910001313 Cobalt-iron alloy Inorganic materials 0.000 description 1
229910000640 Fe alloy Inorganic materials 0.000 description 1
MWCLLHOVUTZFKS-UHFFFAOYSA-N Methyl cyanoacrylate Chemical compound COC(=O)C(=C)C#N MWCLLHOVUTZFKS-UHFFFAOYSA-N 0.000 description 1
229910000676 Si alloy Inorganic materials 0.000 description 1
RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
238000002441 X-ray diffraction Methods 0.000 description 1
QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
KGWWEXORQXHJJQ-UHFFFAOYSA-N [Fe].[Co].[Ni] Chemical compound [Fe].[Co].[Ni] KGWWEXORQXHJJQ-UHFFFAOYSA-N 0.000 description 1
230000005534 acoustic noise Effects 0.000 description 1
238000000137 annealing Methods 0.000 description 1
239000004568 cement Substances 0.000 description 1
239000010941 cobalt Substances 0.000 description 1
229910017052 cobalt Inorganic materials 0.000 description 1
GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
239000002178 crystalline material Substances 0.000 description 1
230000000593 degrading effect Effects 0.000 description 1
238000000113 differential scanning calorimetry Methods 0.000 description 1
238000010790 dilution Methods 0.000 description 1
239000012895 dilution Substances 0.000 description 1
230000005307 ferromagnetism Effects 0.000 description 1
229910052732 germanium Inorganic materials 0.000 description 1
GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
239000011521 glass Substances 0.000 description 1
229910052735 hafnium Inorganic materials 0.000 description 1
VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
238000009396 hybridization Methods 0.000 description 1
UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
150000002739 metals Chemical class 0.000 description 1
238000012986 modification Methods 0.000 description 1
230000004048 modification Effects 0.000 description 1
239000000843 powder Substances 0.000 description 1
238000002360 preparation method Methods 0.000 description 1
238000004080 punching Methods 0.000 description 1
230000005855 radiation Effects 0.000 description 1
239000000700 radioactive tracer Substances 0.000 description 1
238000007712 rapid solidification Methods 0.000 description 1
230000009467 reduction Effects 0.000 description 1
238000011160 research Methods 0.000 description 1
230000004044 response Effects 0.000 description 1
229920006395 saturated elastomer Polymers 0.000 description 1
238000000646 scanning calorimetry Methods 0.000 description 1
230000035939 shock Effects 0.000 description 1
238000010583 slow cooling Methods 0.000 description 1
238000005482 strain hardening Methods 0.000 description 1
238000003786 synthesis reaction Methods 0.000 description 1
GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
229910002058 ternary alloy Inorganic materials 0.000 description 1
229910052719 titanium Inorganic materials 0.000 description 1
239000010936 titanium Substances 0.000 description 1
WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
229910052721 tungsten Inorganic materials 0.000 description 1
239000010937 tungsten Substances 0.000 description 1
229910052720 vanadium Inorganic materials 0.000 description 1
LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
229910052726 zirconium Inorganic materials 0.000 description 1

Images

Classifications

- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/07—Alloys based on nickel or cobalt based on cobalt
- 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
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15316—Amorphous metallic alloys, e.g. glassy metals based on Co

Definitions

This invention relates to glassy metal alloys with Perminvar characteristics that is constant permeabilities at low magnetic field excitations and constricted hysteresis loops. More particularly, this invention provides glassy metal alloys with highly non-linear magnetic properties at low magnetic excitation levels.
the magnetic response namely magnetic induction caused by magnetic excitation, of a typical ferromagnet
This loop usually does not allow a relatively constant permeability near the zero-excitation point.
Perminvar alloys were developed [see, for example, R. M. Bozorth, Ferromagnetism (Van Nostrand, Co., Inc., New York, 1951) p. 166-180]. These alloys are usually based on crystalline iron-cobalt-nickel system. Typical compositions (weight percent) include 20%Fe-60%Co-20%Ni (20-60 Perminvar) and 30%Fe-25%Co-45%Ni (45-45 Perminvar).
Saturation magnetostriction as is related to the fractional change in length ⁇ l/l that occurs in a magnetic material on going from the demagnetized to the saturated, ferromagnetic state.
the value of magnetostriction is often given in units of microstrains (i.e., a microstrain is a fractional change in length of one part per million).
Ferromagnetic alloys of low magnetostriction are desirable for several interrelated reasons:
Zero magnetostrictive alloys based on the binaries but with small additions of other elements such as molybdenum, copper or aluminum to provide specific property changes. These include, for example, 4% Mo, 79% Ni, 17% Fe (sold under the designation Moly Permalloy) for increased resistivity and permeability; permalloy plus varying amounts of copper (sold under the designation Mumetal) for magnetic softness and improved ductility; and 85 wt. % Fe, 9 wt. % Si, 6 wt. % Al (sold under the designation Sendust) for zero anisotropy.
the alloys included in category (1) are the most widely used of the three classes listed above because they combine zero magnetostriction with low anisotropy and are, therefore, extremely soft magnetically; that is they have a low coercivity, a high permeability and a low core loss. These permalloys are also relatively soft mechanically and their excellent magnetic properties, achieved by high temperature (above 1000°C) anneal, tend to be degraded by relatively mild mechanical shock.
Category (2) alloys such as those based on C0 90 Fe lo have a much higher saturation induction (B s about 1.9 Tesla) than the permalloys. However, they also have a strong negative magnetocrystalline anisotropy, which prevents them from being good soft magnetic materials. For example, the initial permeability of Co 90 Fe 10 is only about 100 to 200.
Category (3) alloys such as Fe-6 wt% Si and the related ternary alloy Sendust (mentioned above) also show higher saturation inductions (B s about 1.8 Tesla and 1.1 Tesla, respectively) than the permalloys.
these alloys are extremely brittle and have, therefore, found limited use in powder form only.
compositional dependence of the magnetostriction is very strong in these materials, making difficult precise tayloring of the alloy composition to achieve near-zero maganetostriction.
glassy metal alloys of zero magnetostriction Such alloys might be found near the compositions listed above. Because of the presence of metalloids which tend to reduce the magnetization by dilution and electronic hybridization, however, glassy metal alloys based on the 80 nickel permalloys are either non-magnetic at room temperature or have unacceptably low saturation inductions.
the glassy alloy Fe 40 Ni 40 P 14 B 6 (the subscripts are in atom percent) has a saturation induction of about 0.8 Tesla, while the glassy alloy Ni 49 Fe 29 P 14 B 6 Si 2 has a saturation induction of about 0.46 Tesla and the glassy alloy N i 80P20 is non-magnetic.
No glassy metal alloys having a saturation magnetostriction approximately equal . to zero have yet been found near the iron-rich Sendust composition.
a number of near-zero magnetostrictive glassy metal alloys based on the Co-Fe crystalline alloy mentioned above in (2) have been reported in the literature. These are, for example, Co 72 Fe 3 P 16 B 6 Al 3 (AIP Conference Proceedings, No. 24, pp.
the crystalline materials mentioned-above have to be baked for a long time at a given temperature.
the heat-rtreatment is performed at 425°C for 24 hours.
a magnetic alloy that is at least 70% glassy and which has a low magnetostriction and Perminvar characteristics of relatively constant permeability at low magnetic field excitations and a constricted hysteresis loop in addition to excellent soft magnetic properties.
the glassy alloy has a value of magnetostriction ranging from about - 1 ⁇ 10 -6 to + 1x10 -6 , a saturation induction ranging from about 0.5 to 1 Tesla, a Curie temperature ranging from about 200 to 450°C and a first crystallization temperature ranging from about 440 to 570°C.
the glassy alloy is heat-treated by heating it to a temperature between about 50 and 110°C below its first crystallization temperature for a time period ranging from 15 to 180 min., and then cooling the alloy at a rate slower than about - 60°C/min.
the choice of T a and t a should exclude the case that ⁇ T c -a ⁇ 50°C and t a > 15 minutes because such combination sometimes results in crystallization of the glassy alloy.
the metal M in the alloys of the invention may be replaced by at least one other element such as vanadium, tungsten, tantalum, titanium, zirconium and hafnium, and up to about 4 atom percent of Si may be replaced by carbon, aluminum or germanium without significantly degrading the desirable magnetic properties of these alloys.
Examples of near-zero magnetostrictive glassy metal alloys of the invention include Co 70.5 Fe 4.5 B 15 Si 10 , Co 69.0 Fe 4.1 Ni 1.4 Mo 1.5 B 12 Si 12 , Co 65.7 Fe 4.4 Ni 2.9 Mo 2 B 11 Si 14 , Co 69.2 Fe 3.8 Mo 2 B 8 Si 17 , Co 67.5 Fe 4.5 Ni 3.0 B 8 Si 17 , Co 70.9 Fe 4.1 B 8 Si 17 , Co 69.9 Fe 4.1 Mn 1.0 B 8 Si 17 , Co 69.0 Fe 4.0 Mn 2 B 8 Si 17 , Co 68.0 Fe 4.0 Mn 3 B 8 Si 17 , Co 67.1 Fe 3.9 Mn 4 B 8 Si 17 , Co 68.0 Fe 4.0 Mn 2 Cr 1 B 8 Si 17 , Co 69.0 Fe 4.0 Cr 2 B 8 Si 17 , Co 69.0 Fe 4.0 Nb 2 B 8 Si 17 , Co 68.2 Fe 3.8 Mn 1 B 12 Si 15 , Co 67.7 Fe 3.3 Mn 2 B
the constricted B-H loops of Figs 1B and 1C are characteristic of the materials with Perminvar-like properties, whereas the B-H loop of Fig. 1A corresponds to that of a typical soft ferromagnet.
the glassy alloys of the invention are conveniently prepared by techniques readily available elsewhere; see e.g. US Patent No. 3,845,805 issued November 5, 1974 and No. 3,856,513 issued December 24, 1974.
the glassy alloys, in the form of continuous ribbon, wire, etc. are rapidly quenched from a melt of the desired composition at a rate of at least about 10 5 K/sec.
these alloys exhibit high permeabilities and low core loss at high frequencies.
T a and t a are heat-treatment temperature and time. Cooling after the heat-treatment is about -5°C/min., unless otherwise stated.
the glassy alloys listed in Tables I-III were rapidly quenched (about 10 6 K/sec) from the melt following the techniques taught by Chen and Polk in U.S. Patent 3,856,513.
the resulting ribbons typically 25 to 30 ⁇ m thick and 0.5 to 2.5 cm wide, were determined to be free of significant crystallinity by X-ray diffractometry (using CuK radiation) and scanning calorimetry. Ribbons of the glassy metal alloys were strong, shiny, hard and ductile.
Continuous ribbons of the glassy metal alloys prepared in accordance with the procedure described in Example I were wound onto bobbins (3.8 cm O.D.) to form closed-magnetic-path toroidal samples. Each sample contained from 1 to 3 g of ribbon. Insulated primary and secondary windings (numbering at least 10 each) were applied to the toroids. These samples were used to obtain hysteresis loops (coercivity and remanence) and initial permeability with a commercial curve tracer and core loss (IEEE Standard 106-1972).
the ferromagnetic Curie temperature ( ⁇ f ) was measured by inductance method and also monitored by differential scanning calorimetry, which was used primarily to determine the crystallization temperatures.

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Chemical & Material Sciences (AREA)
Engineering & Computer Science (AREA)
Materials Engineering (AREA)
Mechanical Engineering (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Physics & Mathematics (AREA)
Electromagnetism (AREA)
Dispersion Chemistry (AREA)
Power Engineering (AREA)
Soft Magnetic Materials (AREA)

EP19860115434 1986-01-08 1986-11-07 Alliages métalliques vitreux à caractéristiques perminvar Expired EP0240600B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US81719386A	1986-01-08	1986-01-08
US817193		1986-01-08

Publications (2)

Publication Number	Publication Date
EP0240600A1 true EP0240600A1 (fr)	1987-10-14
EP0240600B1 EP0240600B1 (fr)	1992-05-13

Family

ID=25222548

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19860115434 Expired EP0240600B1 (fr)	1986-01-08	1986-11-07	Alliages métalliques vitreux à caractéristiques perminvar

Country Status (4)

Country	Link
EP (1)	EP0240600B1 (fr)
JP (2)	JP2552274B2 (fr)
CA (1)	CA1317484C (fr)
DE (1)	DE3685326D1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2641104A1 (fr) *	1988-12-27	1990-06-29	Pitney Bowes Inc
GB2233346A (en) *	1989-06-29	1991-01-09	Pitney Bowes Inc	Cobalt-niobium amorphous ferromagnetic alloys
WO1997041576A1 (fr) *	1996-04-29	1997-11-06	Alliedsignal Inc.	Ensemble bobine/noyau magnetiques pour systeme d'allumage commande
WO1997041575A1 (fr) *	1996-04-29	1997-11-06	Alliedsignal Inc.	Ensemble bobine/noyau magnetique pour moteurs a explosion
WO1998049697A1 (fr) *	1997-04-29	1998-11-05	Alliedsignal Inc.	Ensemble noyau-enroulement magnetique pour systemes d'allumage par etincelle
WO2000017897A1 (fr) *	1998-09-17	2000-03-30	Vacuumschmelze Gmbh	Transformateur de courant a tolerance vis-a-vis du courant continu
WO2000030131A1 (fr) *	1998-11-13	2000-05-25	Vacuumschmelze Gmbh	Noyau magnetique destine a etre utilise dans un transformateur d'intensite, procede de fabrication d'un noyau magnetique et transformateur d'intensite equipe d'un tel noyau
US6457464B1 (en)	1996-04-29	2002-10-01	Honeywell International Inc.	High pulse rate spark ignition system
GB2374084A (en) *	2001-04-03	2002-10-09	Fourwinds Group Inc	Alloys having bistable magnetic behaviour
US6535096B1 (en)	1997-09-18	2003-03-18	Honeywell International Inc.	High pulse rate ignition system
ES2524733A1 (es) *	2014-07-25	2014-12-11	Universidad Complutense De Madrid	Sensor inalámbrico para detectar presión.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP5700328B2 (ja) *	2010-04-26	2015-04-15	セイコーエプソン株式会社	Ｃｏ基金属ガラス合金、磁心、電磁変換機および時計
WO2018128149A1 (fr) *	2017-01-05	2018-07-12	Tdk株式会社	Noyau et réacteur, limiteur de courant, actionneur électromagnétique et moteur utilisant ledit noyau

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Publication number	Priority date	Publication date	Assignee	Title
US4188211A (en) *	1977-02-18	1980-02-12	Tdk Electronics Company, Limited	Thermally stable amorphous magnetic alloy
US4288260A (en) *	1977-12-16	1981-09-08	Matsushita Electric Industrial Co. Ltd.	Method of heat treatments of amorphous alloy ribbons
EP0084138A2 (fr) *	1982-01-18	1983-07-27	Allied Corporation	Alliages métalliques ayant une structure de verre, une magnétostriction de presque zéro et une grande stabilité magnétique et thermique

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SE7511398L (sv) *	1974-10-21	1976-04-22	Western Electric Co	Magnetisk anordning
JPS5825449A (ja) *	1981-08-05	1983-02-15	Toshiba Corp	磁気ヘツド用非晶質磁性合金
JPS59179751A (ja) *	1983-03-31	1984-10-12	Toshiba Corp	可飽和リアクトル用非晶質合金

1986
- 1986-11-07 EP EP19860115434 patent/EP0240600B1/fr not_active Expired
- 1986-11-07 DE DE8686115434T patent/DE3685326D1/de not_active Expired - Lifetime
1987
- 1987-01-08 JP JP62002562A patent/JP2552274B2/ja not_active Expired - Lifetime
- 1987-03-31 CA CA000533379A patent/CA1317484C/fr not_active Expired - Lifetime
1995
- 1995-10-11 JP JP7263164A patent/JP2907271B2/ja not_active Expired - Lifetime

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4188211A (en) *	1977-02-18	1980-02-12	Tdk Electronics Company, Limited	Thermally stable amorphous magnetic alloy
US4288260A (en) *	1977-12-16	1981-09-08	Matsushita Electric Industrial Co. Ltd.	Method of heat treatments of amorphous alloy ribbons
EP0084138A2 (fr) *	1982-01-18	1983-07-27	Allied Corporation	Alliages métalliques ayant une structure de verre, une magnétostriction de presque zéro et une grande stabilité magnétique et thermique

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
APPLIED PHYSICS LETTERS, vol. 36, no. 4, February 1980 KOICHI ASO "Observation of magnetic hysteresis loop of the perminvar type in worked Co-based amorphos alloys" pages 339-341 abstract *
ELEKTROTECHNIK UND MASCHINENBAU, 97. Jahrgang, Heft 9, September 1980 RICHARD HAFERL "Glasartige Metalle - Eigenschaften und Anwendungen" pages 378-385 page 383, lines 16-40 *

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2641104A1 (fr) *	1988-12-27	1990-06-29	Pitney Bowes Inc
GB2233346A (en) *	1989-06-29	1991-01-09	Pitney Bowes Inc	Cobalt-niobium amorphous ferromagnetic alloys
GB2264716A (en) *	1989-06-29	1993-09-08	Pitney Bowes Inc	Cobalt-niobium amorphous ferromagnetic alloys
GB2233346B (en) *	1989-06-29	1993-12-22	Pitney Bowes Inc	Cobalt-niobium amorphous ferromagnetic alloys
GB2264716B (en) *	1989-06-29	1994-02-23	Pitney Bowes Inc	Cobalt-niobium amorphous ferromagnetic alloys
US5923236A (en) *	1996-04-29	1999-07-13	Alliedsignal Inc.	Magnetic core-coil assembly for spark ignition system
US6457464B1 (en)	1996-04-29	2002-10-01	Honeywell International Inc.	High pulse rate spark ignition system
WO1997041574A1 (fr) *	1996-04-29	1997-11-06	Alliedsignal Inc.	Ensemble bobine noyau magnetique pour moteurs a explosion
US5844462A (en) *	1996-04-29	1998-12-01	Alliedsignal Inc.	Magnetic core-coil assembly for spark ignition systems
WO1997041576A1 (fr) *	1996-04-29	1997-11-06	Alliedsignal Inc.	Ensemble bobine/noyau magnetiques pour systeme d'allumage commande
WO1997041575A1 (fr) *	1996-04-29	1997-11-06	Alliedsignal Inc.	Ensemble bobine/noyau magnetique pour moteurs a explosion
WO1998049697A1 (fr) *	1997-04-29	1998-11-05	Alliedsignal Inc.	Ensemble noyau-enroulement magnetique pour systemes d'allumage par etincelle
US6535096B1 (en)	1997-09-18	2003-03-18	Honeywell International Inc.	High pulse rate ignition system
WO2000017897A1 (fr) *	1998-09-17	2000-03-30	Vacuumschmelze Gmbh	Transformateur de courant a tolerance vis-a-vis du courant continu
US6563411B1 (en)	1998-09-17	2003-05-13	Vacuumschmelze Gmbh	Current transformer with direct current tolerance
WO2000030131A1 (fr) *	1998-11-13	2000-05-25	Vacuumschmelze Gmbh	Noyau magnetique destine a etre utilise dans un transformateur d'intensite, procede de fabrication d'un noyau magnetique et transformateur d'intensite equipe d'un tel noyau
US6580347B1 (en)	1998-11-13	2003-06-17	Vacuumschmelze Gmbh	Magnetic core that is suitable for use in a current transformer, method for the production of a magnetic core and current transformer with a magnetic core
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ES2524733A1 (es) *	2014-07-25	2014-12-11	Universidad Complutense De Madrid	Sensor inalámbrico para detectar presión.
WO2016012636A1 (fr) *	2014-07-25	2016-01-28	Universidad Complutense De Madrid	Capteur sans fil pour détecter une pression

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JPS62170446A (ja)	1987-07-27
JP2552274B2 (ja)	1996-11-06
EP0240600B1 (fr)	1992-05-13
JPH08188858A (ja)	1996-07-23
JP2907271B2 (ja)	1999-06-21

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