WO1992020829A1 - Complexe de poudre magnetostrictive et procedes de fabrication - Google Patents

Complexe de poudre magnetostrictive et procedes de fabrication Download PDF

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Publication number
WO1992020829A1
WO1992020829A1 PCT/SE1992/000331 SE9200331W WO9220829A1 WO 1992020829 A1 WO1992020829 A1 WO 1992020829A1 SE 9200331 W SE9200331 W SE 9200331W WO 9220829 A1 WO9220829 A1 WO 9220829A1
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WO
WIPO (PCT)
Prior art keywords
composite material
magnetostrictive
material according
grains
powder
Prior art date
Application number
PCT/SE1992/000331
Other languages
English (en)
Inventor
Tord Cedell
Original Assignee
Proengco Ab
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 Proengco Ab filed Critical Proengco Ab
Priority to JP4510169A priority Critical patent/JPH06507676A/ja
Priority to EP92917301A priority patent/EP0663961A1/fr
Publication of WO1992020829A1 publication Critical patent/WO1992020829A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/58—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/58—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres
    • B29C70/62—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres the filler being oriented during moulding
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/34—Metals, e.g. ferro-silicon
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/36—Inorganic materials not provided for in groups C04B14/022 and C04B14/04 - C04B14/34
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/0094—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with organic materials as the main non-metallic constituent, e.g. resin
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
    • 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
    • H01F1/0302—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions
    • H01F1/0306—Metals or alloys, e.g. LAVES phase alloys of the MgCu2-type
    • 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
    • H01F1/20—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 in the form of particles, e.g. powder
    • H01F1/22—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 in the form of particles, e.g. powder pressed, sintered, or bound together
    • H01F1/24—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 in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
    • 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
    • H01F1/20—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 in the form of particles, e.g. powder
    • H01F1/22—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 in the form of particles, e.g. powder pressed, sintered, or bound together
    • H01F1/24—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 in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
    • H01F1/26—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 in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated by macromolecular organic substances
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N35/00—Magnetostrictive devices
    • H10N35/80—Constructional details
    • H10N35/85—Magnetostrictive active materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/008—Using vibrations during moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16—Fillers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2503/00—Use of resin-bonded materials as filler
    • B29K2503/04—Inorganic materials
    • B29K2503/06—Metal powders, metal carbides or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
    • B29K2995/0008—Magnetic or paramagnetic

Definitions

  • the invention relates partly to a magnetostrictive
  • the powder composite according to the preamble to claim 1 is preferably used as a magnetostrictive element in sound projectors and vibration generators, transducers, actuators and in various types of linear motors.
  • Permanent magnets usually compounds of rare earth
  • SmCo 5 and Nd 2 Fe 14 B are passive devices used for generating a magnetic field.
  • Permanent magnets are magnetized initially and posses
  • Nd 2 Fe 14 B magnets developed by
  • General Motors are used in the starter motors of their cars and trucks.
  • Magnetostrictive powder composite is an active device consisting of rare earth metals (RE) and transition metals (Fe, Ni, Co and Mn), (RE) x Fe 1-x , which changes its length extremely much when exposed to an external magnetic field.
  • RE rare earth metals
  • Fe, Ni, Co and Mn transition metals
  • Fe x Fe 1-x which changes its length extremely much when exposed to an external magnetic field.
  • traditional magnetostrictive materials such as Fe and Ni which display magnetostrictive change in length of 9 ⁇ m/m and 40 ⁇ m/m respectively
  • a magnetostrictive powder composite displays length changes of more than 1000 ⁇ m/m and is therefore called giant magnetostrictive material.
  • the magnetostrictive powder composite is used to generate large and fast movements of high precision and large force. In most applications this large force is used to increase change in length and to generate larger movements.
  • Magnetostrictive powder composite is usually used in high frequency applications (up to 60 kHz), e.g.
  • the purpose of the magnetostrictive composite is that it should work as an acoustic projector i.e. to generate fast mechanical movements and ultrasound.
  • Magnetostrictive powder composite is initially a
  • the material constituting the magnetostrictive powder composite has low remanence and low coercive force.
  • Magnetic powder composite has been put forward with a purpose to increase the bandwidth of the casted giant magnetostrictive material available on the market.
  • Magnetostrictive powder composite can manage a frequency region of 0 - 60 kHz, while casted giant magnetostrictive material only can manage 0 - 2 kHz.
  • Giant magnetostrictive alloys made of terbium, dysprosium and iron are usually called Terfenol-D.
  • Giant magnetostrictive powder composite is used in:
  • Magnetostrictive powder composite according to the invention presented has not been known of before.
  • the patent documents US, A, 4865 660, DK, B, 157 222, FR, A, 2065 359 and EP, Al, 175 535 do certainly refer to magnetic powder composite materials, which nevertheless all are permanet magnets and which find their applications because of their capability to maintain permanent
  • Magnetostrictive properties are not
  • the magnetostrictive materials are manufactured in the form of rods by casting.
  • the casted rods hereby get brittle characteristics and are beacuse of this very difficult to machine with conventional techniques.
  • the rods are brittle and can only withstand very small tensional stress.
  • magnetostrictive rods like for instance Terfenol-D rods
  • magnetostrictive rod it is difficult to magnetize homogeneously such a rod by the use of permanent magnets applied at its ends.
  • permanent magnets applied at its ends.
  • the low permeability of the casted rod also causes
  • the powder composite is so tough that it can be shaped with a conventional cutting technique.
  • aluminium oxide, silicon carbide, Kevlar, carbon, glass or titanium are pressed into the rod and aligned longitudinally or perpendicularly, tensile strength and elastic modulus will be increased.
  • the invention utilizes such binding agents which wet said grains and bind them together and
  • Ceramics and oxides preferably rare earth oxides because of a high reactivity of Terfenol-D, can also be used as an
  • magnets can be achieved if a powder of a permanent magnet type, preferably Nd 2 Fe 14 B, is mixed with the magnetostrictive powder, preferably along the rod axis, in order to decrease the leakage flux. This will make it possible to manufacture rods with length/diameter ratios larger than 3:1.
  • a powder of a permanent magnet type preferably Nd 2 Fe 14 B
  • coated iron, nickel, cobalt or amorphous iron like for instance metglas, or alloys of these, can be pressed into the rod ends.
  • Magnetostrictive powder composite can be directly
  • the invention provides for the following advantages:
  • the composite can be lowered, so that it can glide easier against other objects. Also, its chemical resistance can be increased by coating the magnetostrictive powder composite, after it has been pressed, with a thin layer of non-organic material, such as aluminium oxide or an organic material, such as teflon, or if during pressing the composite surface is provided with a powder coating made of the above mentioned organic or non-organic materials.
  • non-organic material such as aluminium oxide or an organic material, such as teflon
  • the strength of the magnetic powder composite can be
  • Fig 1 shows a magnetostrictive composite rod 1 which, besides the magnetostrictive powder, possible coating and a binder, also has permanent magnets 2 of a conventional type at the rod ends and aligned permanent magnet powder 3, mainly along the longitudinal axis of rod 1, which makes the working magnetization in the composite rod 1 more homogeneous.
  • Fig 2 shows a magnetostrictive composite rod 1, an excitation coil for generating magnetizing field 4 and iron powder, coated with a thin electrically insulating layer of Fe 2 O 3 or equivalent material, which has been pressed into the ends 5 of the rod 1.
  • Fig 3 shows a magnetostrictive composite rod 1 with longitudinal fibre reinforcement 6 which, besides
  • the magnetostrictive composite material according to the invention must exhibit low anisotropic energy and high magnetostriction in order to find practical use. It is therefore important to minimize the anisotropic energy and at the same time to optimize the room temperature magnetostriction of the composite material.
  • a number of composite materials with chemical composition (RE) x T 1-x where RE represents one or a mixture of several rare earth metals, T represents Fe, Ni, Co or Mn or a mixture of two or more of these metals and x assuming a value 0 ⁇ x ⁇ 1 represents atomic fraction, will have the mentioned properties.
  • RE represents one or a mixture of several rare earth metals
  • T represents Fe, Ni, Co or Mn or a mixture of two or more of these metals and x assuming a value 0 ⁇ x ⁇ 1 represents atomic fraction
  • x, y, z and w represent atomic fractions within 0.1 ⁇ x ⁇ 1.0
  • the composite material is cooled down, with the magnetizing field still being applied, to a temperature below its Curie temperature.
  • the composite material can be further improved if it is exposed to external vibrations during pressing. This will increase the density and the permeability as well as facilitate the magnetic alignement of the magnetostrictive grains.
  • isostatic pressing which usually means a lower pressing force than in the above described method.
  • This isostatic pressing can be improved by magnetically aligning the magnetostrictive grains before the composite material has been pressed and before the binder has been cured. This is achieved by applying the magnetizing field along the working direction of the magnetostrictive powder composite.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Power Engineering (AREA)
  • Structural Engineering (AREA)
  • Composite Materials (AREA)
  • Civil Engineering (AREA)
  • Metallurgy (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Powder Metallurgy (AREA)
  • Hard Magnetic Materials (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

Complexe de poudre magnétostrictive et procédé de fabrication dudit complexe. Le complexe de poudre décrit par l'invention s'utilise, de préférence, en tant qu'élément magnétostrictif dans des projecteurs sonores, des générateurs de vibrations, des transducteurs, des organes de commande et des moteurs linéaires. Le complexe de poudre est constitué par des grains de poudre magnétostrictive, dont la composition chimique est: (RE)xT1-x, où RE représente un métal terreux rare, ou un mélange de plusieurs métaux terreux rares, T représente Fe, Ni, Co ou Mn ou un mélange desdits métaux et x représente une fraction atomique, dont la valeur est située entre 0 et 1 et les grains sont maintenus ensemble au moyen d'un liant. Le complexe de poudre est constitué de façon à présenter un flux magnétique homogène, une bonne résistance et il peut se fabriquer par précompression intégrée. Il peut comporter des canaux réfrigérants et/ou des boucles d'arrêt. On fabrique le complexe de poudre en comprimant les grains de poudre magnétostrictive et le liant, afin de déformer plastiquement les grains, soit complètement soit partiellement, ce qui provoque l'alignement des zones magnétiques des grains perpendiculairement à la pression de compression appliquée. Dans un mode d'exécution alternatif de l'invention, on utilise la compression isostatique.
PCT/SE1992/000331 1991-05-22 1992-05-19 Complexe de poudre magnetostrictive et procedes de fabrication WO1992020829A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP4510169A JPH06507676A (ja) 1991-05-22 1992-05-19 磁気ひずみ粉末複合材料及びその製造方法
EP92917301A EP0663961A1 (fr) 1991-05-22 1992-05-19 Complexe de poudre magnetostrictive et procedes de fabrication

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9101535-4 1991-05-22
SE9101535A SE468655B (sv) 1991-05-22 1991-05-22 Magnetostriktiv komposit av pulvermaterial

Publications (1)

Publication Number Publication Date
WO1992020829A1 true WO1992020829A1 (fr) 1992-11-26

Family

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Family Applications (1)

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PCT/SE1992/000331 WO1992020829A1 (fr) 1991-05-22 1992-05-19 Complexe de poudre magnetostrictive et procedes de fabrication

Country Status (6)

Country Link
EP (1) EP0663961A1 (fr)
JP (1) JPH06507676A (fr)
AU (1) AU1870692A (fr)
CA (1) CA2102501A1 (fr)
SE (1) SE468655B (fr)
WO (1) WO1992020829A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995035176A1 (fr) * 1994-06-22 1995-12-28 Valtion Teknillinen Tutkimuskeskus Procede de production d'un materiau magnetostrictif
EP0817286A1 (fr) * 1996-07-01 1998-01-07 General Motors Corporation Composés magnétostrictifs
WO1999015281A2 (fr) * 1997-09-19 1999-04-01 Etrema Products, Inc. Transducteur magnetostrictif multicouches et matiere composite magnetostrictive utile pour celui-ci
WO2006007882A1 (fr) * 2004-07-17 2006-01-26 Carl Freudenberg Kg Element magnetostrictif et son utilisation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6056634B2 (ja) * 2013-04-25 2017-01-11 富士通株式会社 発電装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2065359A5 (en) * 1969-10-13 1971-07-23 Western Electric Co Polymeric coating on ferromagnetic particl - es to prevent oxidation
US4152178A (en) * 1978-01-24 1979-05-01 The United States Of America As Represented By The United States Department Of Energy Sintered rare earth-iron Laves phase magnetostrictive alloy product and preparation thereof
US4644310A (en) * 1984-03-22 1987-02-17 Allied Corporation Actuator system having magnetomechanical cantilever beam formed of ferromagnetic amorphous material
US4845450A (en) * 1986-06-02 1989-07-04 Raytheon Company Self-biased modular magnetostrictive driver and transducer
US4865660A (en) * 1985-02-28 1989-09-12 Sumitomo Metal Mining Company Ltd. Rare-earth element/cobalt type magnet powder for resin magnets

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2065359A5 (en) * 1969-10-13 1971-07-23 Western Electric Co Polymeric coating on ferromagnetic particl - es to prevent oxidation
US4152178A (en) * 1978-01-24 1979-05-01 The United States Of America As Represented By The United States Department Of Energy Sintered rare earth-iron Laves phase magnetostrictive alloy product and preparation thereof
US4644310A (en) * 1984-03-22 1987-02-17 Allied Corporation Actuator system having magnetomechanical cantilever beam formed of ferromagnetic amorphous material
US4865660A (en) * 1985-02-28 1989-09-12 Sumitomo Metal Mining Company Ltd. Rare-earth element/cobalt type magnet powder for resin magnets
US4845450A (en) * 1986-06-02 1989-07-04 Raytheon Company Self-biased modular magnetostrictive driver and transducer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995035176A1 (fr) * 1994-06-22 1995-12-28 Valtion Teknillinen Tutkimuskeskus Procede de production d'un materiau magnetostrictif
EP0817286A1 (fr) * 1996-07-01 1998-01-07 General Motors Corporation Composés magnétostrictifs
US5985049A (en) * 1996-07-01 1999-11-16 General Motors Corporation Magnetostrictive composites
US5993565A (en) * 1996-07-01 1999-11-30 General Motors Corporation Magnetostrictive composites
WO1999015281A2 (fr) * 1997-09-19 1999-04-01 Etrema Products, Inc. Transducteur magnetostrictif multicouches et matiere composite magnetostrictive utile pour celui-ci
WO1999015281A3 (fr) * 1997-09-19 2000-02-10 Etrema Products Inc Transducteur magnetostrictif multicouches et matiere composite magnetostrictive utile pour celui-ci
WO2006007882A1 (fr) * 2004-07-17 2006-01-26 Carl Freudenberg Kg Element magnetostrictif et son utilisation
US8502635B2 (en) 2004-07-17 2013-08-06 Carl Freudenberg Kg Magnetostrictive element and use thereof

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Publication number Publication date
CA2102501A1 (fr) 1992-11-23
SE468655B (sv) 1993-02-22
SE9101535D0 (sv) 1991-05-22
JPH06507676A (ja) 1994-09-01
EP0663961A1 (fr) 1995-07-26
AU1870692A (en) 1992-12-30
SE9101535L (sv) 1992-11-23

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