US2829047A - Magnetostrictive element - Google Patents

Magnetostrictive element Download PDF

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Publication number
US2829047A
US2829047A US420646A US42064654A US2829047A US 2829047 A US2829047 A US 2829047A US 420646 A US420646 A US 420646A US 42064654 A US42064654 A US 42064654A US 2829047 A US2829047 A US 2829047A
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US
United States
Prior art keywords
cobalt
nickel
vice versa
electrical energy
magnetostrictive
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.)
Expired - Lifetime
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US420646A
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English (en)
Inventor
Round Henry Joseph
Hinton Frederick Hubert
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.)
Huntington Alloys Corp
Original Assignee
International Nickel Co Inc
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Filing date
Publication date
Application filed by International Nickel Co Inc filed Critical International Nickel Co Inc
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Publication of US2829047A publication Critical patent/US2829047A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/08—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with magnetostriction
    • 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
    • C22C19/03—Alloys based on nickel or cobalt based on nickel
    • 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

Definitions

  • Magnetostrictive devices are used for the conversion of electrical to mechanical oscillations and vice versa, for example as transducers in echo-sounding apparatus.
  • a measure of the efficiency of the magnetostrictive device is given by its electromagnetic coupling coetlicient (K). This coeicient may be determined experimentally and depends upon the material of the magnetostrictive element.
  • the material commonly used for magnetostrictive elements is commercially pure nickel, which combines a high electromagnetic coupling coefficient in magnetic fields of low and medium strengths with high resistance to corrosion.
  • An object of this invention is to improve the eiciency of magnetostrictive devices.
  • the present invention is based on the discovery that the addition of small quantities of cobalt to the nickel improves theV coupling coefficient at low and medium field strengths.
  • a magnetostrictive element for instance the vibrator of an echo-sounding device, is made of a binary alloy of nickel and cobalt containing from 2 to 6%, and preferably'4% cobalt.
  • nickel In making the alloys commercially pure nickel is normally used, and accordingly the usual impurities will also be present.
  • Commercial nickel often contains very smallv quantities of cobalt, and on occasions the cobalt may be as high as The cobalt content of the alloys used according to the invention is higher than the highest amount of cobalt ever present as an impurity in commercial nickel.
  • the abscissae are the cobalt contents of nickel-. cobalt alloys tested and theordinates are the ⁇ values of the coeicientK.
  • the curve shows the way in which the coeicient K was found to vary in one ring transducer.
  • the coefficient wasv measured at a frequency of 33,000 cycles per second and at remanence, i. e. in the absence of an externally applied biasing magnetic eld. It will be seen,
  • Patented Apr. v1, 1958 A substantially similar curve is obtained on measuring the maximum coetlicient K in a biasing eld.
  • a transducer vibrator element exhibiting magnetostrictive properties made of a binary alloy consisting of nickel and cobalt containing from 2 to 6% cobalt to provide high eiiiciency in the conversion of mechanical energy into electrical energy or vice versa.
  • a transducer for converting mechanical energy into electrical energy or vice versa having a magnetostrictive element consisting essentially of a binary alloy consisting of nickel and cobalt containing from about 2% Vto about 6% cobalt to provide high eiciency in the conversion of mechanical energy into electrical energy or vice versa.
  • a transducer for converting mechanical energy into electrical energy or vice versa having a magnetostrictive element consisting essentially of a binary alloy consisting of nickel and cobalt containing about 4% cobalt to provide high eficiency in the conversion ofVV mechanical energy into electrical energy or vice versa.
  • An echo-sounding device having a transducer for converting mechanical energy into electrical energy or Vice versa having a magnetostrictive element consisting essentially of a binary alloy consisting of nickel and cobalt containing from about 2% to about 6% cobalt to provide high efciency in the conversion of mechanical energy into electrical energy or vice versa.
  • An echo-sounding device having a transducer for converting mechanical energy into electrical energy or vice versa having a magnetostrictive element consisting essentiallyof a binary alloy consisting of nickel and cobalt containing about 4% cobalt to provide high eiiciency in the conversion of mechanical energy into electrical energy or Vice versa.
  • a transducer element exhibiting magnetostrictiveV properties constructed of a binary alloy consisting of nickel and cobalt containing about 2% to about 6% cobalt to provide high eiciency in the conversion of mechanical energy into electrical energy or vice versa,
  • a transducer element exhibiting magnetostrictive properties constructed of a binary alloy' consisting of nickel and cobalt containing about 4% cobalt to provide high efficiency Vin the conversion of mechanicalenergy into electrical energy or vice versa.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Transducers For Ultrasonic Waves (AREA)
US420646A 1953-04-02 1954-04-02 Magnetostrictive element Expired - Lifetime US2829047A (en)

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Application Number Priority Date Filing Date Title
GB2829047X 1953-04-02

Publications (1)

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US2829047A true US2829047A (en) 1958-04-01

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US420646A Expired - Lifetime US2829047A (en) 1953-04-02 1954-04-02 Magnetostrictive element

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US (1) US2829047A (de)
DE (1) DE950417C (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375372A (en) * 1972-03-16 1983-03-01 The United States Of America As Represented By The Secretary Of The Navy Use of cubic rare earth-iron laves phase intermetallic compounds as magnetostrictive transducer materials
US4378258A (en) * 1972-03-16 1983-03-29 The United States Of America As Represented By The Secretary Of The Navy Conversion between magnetic energy and mechanical energy
US6176943B1 (en) 1999-01-28 2001-01-23 The United States Of America As Represented By The Secretary Of The Navy Processing treatment of amorphous magnetostrictive wires

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2823599C2 (de) * 1978-05-30 1983-03-31 Gosudarstvennyj naučno-issledovatel'skij i proektnyj institut splavov i obrabotki cvetnych metallov GIPROCVET-METOBRABOTKA, Moskva Verwendung einer Legierung auf Nickelgrundlage für die Herstellung magnetostriktiver Schwinger

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB263059A (en) * 1925-08-18 1926-12-18 Bell Telephone Labor Inc Improvements in magnetic materials
AU344826A (en) * 1926-08-24 1927-05-13 Western Electric Company, Incorporated Magnetic materials
FR713793A (fr) * 1931-03-24 1931-11-02 Siemens Ag Alliage de nickel et de fer, fortement magnétique
CH152303A (de) * 1929-11-23 1932-01-31 Siemens Ag Magnetische Legierung.
US2072575A (en) * 1934-06-13 1937-03-02 Bell Telephone Labor Inc Nickel base alloy

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB263059A (en) * 1925-08-18 1926-12-18 Bell Telephone Labor Inc Improvements in magnetic materials
AU344826A (en) * 1926-08-24 1927-05-13 Western Electric Company, Incorporated Magnetic materials
CH152303A (de) * 1929-11-23 1932-01-31 Siemens Ag Magnetische Legierung.
FR713793A (fr) * 1931-03-24 1931-11-02 Siemens Ag Alliage de nickel et de fer, fortement magnétique
US2072575A (en) * 1934-06-13 1937-03-02 Bell Telephone Labor Inc Nickel base alloy

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375372A (en) * 1972-03-16 1983-03-01 The United States Of America As Represented By The Secretary Of The Navy Use of cubic rare earth-iron laves phase intermetallic compounds as magnetostrictive transducer materials
US4378258A (en) * 1972-03-16 1983-03-29 The United States Of America As Represented By The Secretary Of The Navy Conversion between magnetic energy and mechanical energy
US6176943B1 (en) 1999-01-28 2001-01-23 The United States Of America As Represented By The Secretary Of The Navy Processing treatment of amorphous magnetostrictive wires

Also Published As

Publication number Publication date
DE950417C (de) 1956-10-11

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