Patents Assigned to Metglas Inc.
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Patent number: 11613101Abstract: A magnetic piece, a multilayer magnetic piece and a multilayer core with an adhesive agent of excellent saturation magnetic flux density are provided. The magnetic piece includes a soft magnetic amorphous alloy ribbon 1 and a resin layer 2 provided on at least one surface of the soft magnetic amorphous alloy ribbon. The resin layer contains a resin whose Shore D hardness is not more than 60. The resin may have a Shore D hardness of not more than 25 or may have a Shore D hardness of not less than 1.Type: GrantFiled: October 25, 2018Date of Patent: March 28, 2023Assignees: HITACHI METALS, LTD., METGLAS, INC.Inventors: Akio Uchikawa, Nakao Moritsugu, Daichi Azuma
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Patent number: 11322281Abstract: A multilayer block core includes a multilayer block in which nanocrystalline alloy ribbon pieces are layered, the nanocrystalline alloy ribbon pieces having a composition represented by the following Composition Formula (A). Fe100-a-b-c-dBaSibCucMd??Composition Formula (A) In Composition Formula (A), each of a, b, c, and d is an atomic percent; the expressions 13.0?a?17.0, 3.5?b?5.0, 0.6?c?1.1, and 0?d?0.5 are satisfied; and M represents at least one element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, and W.Type: GrantFiled: February 27, 2017Date of Patent: May 3, 2022Assignees: HITACHI METALS, LTD., Metglas, Inc.Inventor: Motoki Ohta
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Patent number: 11264156Abstract: A magnetic core includes a nanocrystalline alloy ribbon having a composition represented by FeCuxBySizAaXb, where 0.6?x<1.2, 10?y?20, 0?(y+z)?24, and 0?a?10, 0?b?5, all numbers being in atomic percent, with the balance being Fe and incidental impurities, and where A is an optional inclusion of at least one element selected from Ni, Mn, Co, V, Cr, Ti, Zr, Nb, Mo, Hf, Ta and W, and X is an optional inclusion of at least one element selected from Re, Y, Zn, As, In, Sn, and rare earth elements. The nanocrylstalline alloy ribbon has a local structure such that nanocrystals with average particle sizes of less than 40 nm are dispersed in an amorphous matrix and are occupying more than 30 volume percent of the ribbon.Type: GrantFiled: January 7, 2015Date of Patent: March 1, 2022Assignees: METGLAS, INC., HITACHI METALS, LTD.Inventors: Motoki Ohta, Naoki Ito
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Patent number: 11230754Abstract: A nanocrystalline alloy ribbon has an alloy composition represented by FebalCuxBySizAaXb where 0.6?x<1.2, 10?y?20, 0<z?10, 10(y+z)24, 0?a?10, O?b?5, with the balance being Fe and incidental impurities, where A is an optional inclusion of at least one element selected from Ni, Mn, Co, V, Cr, Ti, Zr, Nb, Mo, Hf, Ta and W, and X is an optional inclusion of at least one element selected from Re, Y, Zn, As, In, Sn, and rare earth elements, all numbers being in atomic percent. The ribbon has a local structure having nanocrystals with average particle sizes of less than 40 nm dispersed in an amorphous matrix, the nanocrystals occupying more than 30 volume percent of the ribbon and has a radius of ribbon curvature of at least 200 mm.Type: GrantFiled: January 7, 2015Date of Patent: January 25, 2022Assignees: METGLAS, INC., HITACHI METALS, LTD.Inventors: Motoki Ohta, Naoki Ito
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Publication number: 20210310097Abstract: A method of producing an amorphous alloy ribbon having a composition of Fe100-a-bBaSibCc (13.0 atom %?a?16.0 atom %, 2.5 atom %?b?5.0 atom %, 0.20 atom %?c?0.35 atom %, and 79.0 atom %?(100-a-b)?83.0 atom %) includes: preparing an alloy ribbon; and, in a state in which the alloy ribbon is tensioned with a tensile stress of from 5 MPa to 100 MPa, increasing a temperature of the alloy ribbon to from 410° C. to 480° C., at an average temperature increase rate of from 50° C./sec to less than 800° C./sec, and decreasing a temperature of the thus heated alloy ribbon to a temperature of a heat transfer medium for temperature-decreasing, at an average temperature decrease rate of from 120° C./sec to less than 600° C./sec, with performing the increase and decrease of temperature being performed by contacting the traveling alloy ribbon with a heat transfer medium.Type: ApplicationFiled: July 3, 2018Publication date: October 7, 2021Applicants: HITACHI METALS, LTD., METGLAS INC.Inventors: Daichi AZUMA, Naoki ITO
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Publication number: 20200216926Abstract: A method of producing an amorphous alloy having a composition of Fe100-a-bBaSibCc (13.0 atom %?a?16.0 atom %, 2.5 atom %?b?5.0 atom %, 0.20 atom %?c?0.35 atom %, and 79.0 atom %?(100?a?b)?83.0 atom %) includes: preparing an alloy ribbon; and, in a state in which the alloy ribbon is tensioned with a tensile stress of from 20 MPa to 80 MPa, increasing a temperature of the alloy ribbon to from 410° C. to 480° C., at an average temperature increase rate of from 50° C./sec to less than 800° C./sec, and decreasing a temperature of the thus heated alloy ribbon to a temperature of a heat transfer medium for temperature-decreasing, at an average temperature decrease rate of from 120° C./sec to less than 600° C./sec.Type: ApplicationFiled: July 3, 2018Publication date: July 9, 2020Applicants: HITACHI METALS, LTD., METGLAS INC.Inventors: Naoki ITO, Daichi AZUMA
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Patent number: 10566127Abstract: An Fe—Si—B—C-based amorphous alloy ribbon as thick as 20-30 ?m having a composition comprising 80.0-80.7 atomic % of Fe, 6.1-7.99 atomic % of Si, and 11.5-13.2 atomic % of B, the total amount of Fe, Si and B being 100 atomic %, and further comprising 0.2-0.45 atomic % of C per 100 atomic % of the total amount of Fe, Si and B, except for inevitable impurities has a stress relief degree of 92% or more.Type: GrantFiled: December 8, 2015Date of Patent: February 18, 2020Assignees: HITACHI METALS, LTD., METGLAS, INC.Inventors: Eric Theisen, Yuichi Ogawa, Daichi Azuma
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Patent number: 10337081Abstract: An apparatus for annealing alloy ribbon, the apparatus comprising: an unwinder unwinding an alloy ribbon from a spool of the alloy ribbon; a heating member comprising a first flat surface, on which the alloy ribbon unwound by the unwinder runs while contacting the first flat surface, the heating member heating the alloy ribbon running while contacting the first flat surface through the first flat surface; a cooling member comprising a second flat surface, on which the alloy ribbon heated by the heating member runs while contacting the second flat surface, the cooling member cooling the alloy ribbon running while contacting the second flat surface through the second flat surface; and a winder winding the alloy ribbon cooled by the cooling member.Type: GrantFiled: November 4, 2016Date of Patent: July 2, 2019Assignees: Metglas, Inc., HITACHI METALS, LTD.Inventors: Donald Robert Reed, Jr., Joseph Custis Boggs, Norman Eugene Fuller, Jr.
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Patent number: 10316396Abstract: An iron-based soft magnetic alloy greater than 63.5 mm in width, a thickness between 13 and 20 microns and having a composition represented by the following formula: (Fe1-aMa)100-x-y-z-p-q-rCuxSiyBzM?pM?qXr wherein M is Co and/or Ni, M? is at least one element selected from the group consisting of Nb, W, Ta, Zr, Hf, Ti and Mo, M? is at least one element selected from the group consisting of V, Cr, Mn, Al, elements in the platinum group, Sc, Y, rare earth elements, Au, Zn, Sn and Re, X is at least one element selected from the group consisting of C, Ge, P, Ga, Sb, In, Be and As, and a, x, y, z, p, q and r respectively satisfy 0?a?0.5, 0.1?x?3, 0?y?30, 1?z?25, 5?y+z?30, 0.1?p?30, q?10 and r?10, the alloy being at least 50% crystalline with an average particle size of 100 nm or less. This alloy has low core loss, high permeability and low magnetostriction.Type: GrantFiled: September 16, 2015Date of Patent: June 11, 2019Assignee: Metglas, Inc.Inventors: Eric Alan Theisen, Naoki Ito, Ronald Joseph Martis, Donald Robert Reed, Jr., John Paul Webb
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Patent number: 10046420Abstract: Disclosed is a semi-amorphous, ductile brazing foil with a composition consisting essentially of NibalFeaCrbPcSidBeMof with approximately 30 atomic percent ?a?approximately 70 atomic percent; approximately 0 atomic percent ?b?approximately 20 atomic percent; approximately 9 atomic percent ?c?approximately 16 atomic percent; approximately 0 atomic percent ?d?approximately 4 atomic percent; e?approximately 2 atomic percent; f?approximately 5 atomic percent; and the balance being Ni and other impurities; where c+d+e<approximately 16 atomic percent.Type: GrantFiled: March 12, 2015Date of Patent: August 14, 2018Assignee: Metglas, IncInventors: William Coughlan, Eric Theisen
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Patent number: 10022824Abstract: Disclosed is a semi-amorphous, ductile brazing foil with a composition consisting essentially of NibalFeaCrbPcSidBeMof with approximately 30 atomic percent?a?approximately 38 atomic percent; approximately 10 atomic percent?b?approximately 20 atomic percent; approximately 7 atomic percent?c?approximately 20 atomic percent; approximately 2 atomic percent?d?approximately 4 atomic percent; e?approximately 2 atomic percent; f?approximately 5 atomic percent; and the balance being Ni and other impurities; where c+d+e<approximately 16 atomic percent.Type: GrantFiled: March 18, 2014Date of Patent: July 17, 2018Assignee: Metglas, Inc.Inventors: William Coughlan, Eric Theisen
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Patent number: 9970089Abstract: Disclosed is the semi-amorphous, ductile brazing foil with composition consisting essentially of NibalCraBbPcSidMoeFef with approximately 24 atomic percent?a?approximately 31 atomic percent; b?approximately 3 atomic percent; approximately 9 atomic percent?c?approximately 11 atomic percent; approximately 2 atomic percent?d?approximately 4 atomic percent; e?approximately 2 atomic percent; f?approximately 1 atomic percent; and the balance being Ni and other impurities; where b+c+d<approximately 16 atomic percent.Type: GrantFiled: December 13, 2013Date of Patent: May 15, 2018Assignee: Metglas, Inc.Inventors: William Coughlan, Eric Theisen
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Publication number: 20170365392Abstract: An Fe—Si—B—C-based amorphous alloy ribbon as thick as 20-30 ?m having a composition comprising 80.0-80.7 atomic % of Fe, 6.1-7.99 atomic % of Si, and 11.5-13.2 atomic % of B, the total amount of Fe, Si and B being 100 atomic %, and further comprising 0.2-0.45 atomic % of C per 100 atomic % of the total amount of Fe, Si and B, except for inevitable impurities has a stress relief degree of 92% or more.Type: ApplicationFiled: December 8, 2015Publication date: December 21, 2017Applicants: METGLAS, INC., HITACHI METALS, LTD.Inventors: Eric THEISEN, Yuichi OGAWA, Daichi AZUMA
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Publication number: 20160196907Abstract: A nanocrystalline alloy ribbon has an alloy composition represented by FeCuxBySizAaXb where 0.6?x<1.2, 10?y?20, 0<z?10, 10?(y+z)?24, 0?a?10, 0?b?5, with the balance being Fe and incidental impurities, where A is an optional inclusion of at least one element selected from Ni, Mn, Co, V, Cr, Ti, Zr, Nb, Mo, Hf, Ta and W, and X is an optional inclusion of at least one element selected from Re, Y, Zn, As, In, Sn, and rare earth elements, all numbers being in atomic percent. The ribbon has a local structure having nanocrystals with average particle sizes of less than 40 nm dispersed in an amorphous matrix, the nanocrystals occupying more than 30 volume percent of the ribbon and has a radius of ribbon curvature of at least 200 mm.Type: ApplicationFiled: January 7, 2015Publication date: July 7, 2016Applicants: METGLAS, INC., HITACHI METALS, LTD.Inventors: Motoki OHTA, Naoki Ito
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Publication number: 20160196908Abstract: A magnetic core includes a nanocrystalline alloy ribbon having a composition represented by FeCuxBySizAaXb, where 0.6?x<1.2, 10?y?20, 0?(y+z)?24, and 0?a?10, 0?b?5, all numbers being in atomic percent, with the balance being Fe and incidental impurities, and where A is an optional inclusion of at least one element selected from Ni, Mn, Co, V, Cr, Ti, Zr, Nb, Mo, Hf, Ta and W, and X is an optional inclusion of at least one element selected from Re, Y, Zn, As, In, Sn, and rare earth elements. The nanocrylstalline alloy ribbon has a local structure such that nanocrystals with average particle sizes of less than 40 nm are dispersed in an amorphous matrix and are occupying more than 30 volume percent of the ribbon.Type: ApplicationFiled: January 7, 2015Publication date: July 7, 2016Applicants: METGLAS, INC., HITACHI METALS, LTD.Inventors: Motoki OHTA, Naoki ITO
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Publication number: 20160172087Abstract: An Fe—Si—B—C-based amorphous alloy ribbon as thick as 20-30 ?m having a composition comprising 80.0-80.7 atomic % of Fe, 6.1-7.99 atomic % of Si, and 11.5-13.2 atomic % of B, the total amount of Fe, Si and B being 100 atomic %, and further comprising 0.2-0.45 atomic % of C per 100 atomic % of the total amount of Fe, Si and B, except for inevitable impurities has a stress relief degree of 92% or more.Type: ApplicationFiled: December 11, 2014Publication date: June 16, 2016Applicants: METGLAS, INC., HITACHI METALS, LTD.Inventors: Eric THEISEN, Yuichi OGAWA, Daichi AZUMA
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Publication number: 20150266139Abstract: Disclosed is a semi-amorphous, ductile brazing foil with a composition consisting essentially of NibalFeaCrbPcSidBeMof with approximately 30 atomic percent?a?approximately 38 atomic percent; approximately 10 atomic percent?b?approximately 20 atomic percent; approximately 7 atomic percent?c?approximately 20 atomic percent; approximately 2 atomic percent?d?approximately 4 atomic percent; e?approximately 2 atomic percent; f?approximately 5 atomic percent; and the balance being Ni and other impurities; where c+d+e<approximately 16 atomic percent.Type: ApplicationFiled: March 18, 2014Publication date: September 24, 2015Applicant: Metglas, Inc.Inventors: William COUGHLAN, Eric THEISEN
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Publication number: 20150168088Abstract: Disclosed is the semi-amorphous, ductile brazing foil with composition consisting essentially of NibalCraBbPcSidMoeFef with approximately 24 atomic percent?a?approximately 31 atomic percent; b?approximately 3 atomic percent; approximately 9 atomic percent?c?approximately 11 atomic percent; approximately 2 atomic percent?d?approximately 4 atomic percent; e?approximately 2 atomic percent; f?approximately 1 atomic percent; and the balance being Ni and other impurities; where b+c+d<approximately 16 atomic percent.Type: ApplicationFiled: December 13, 2013Publication date: June 18, 2015Applicant: Metglas, Inc.Inventors: William COUGHLAN, Eric Theisen
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Patent number: 8974609Abstract: A ferromagnetic amorphous alloy ribbon includes an alloy having a composition represented by FeaSibBcCd where 80.5?a?83 at. %, 0.5?b?6 at. %, 12?c?16.5 at. %, 0.01?d?1 at. % with a+b+c+d=100 and incidental impurities, the defect length along a direction of the ribbon's length being between 5 mm and 200 mm, the defect depth being less than 0.4×t ?m and the defect occurrence frequency being less than 0.05×w times within 1.5 m of ribbon length, where t and w are ribbon thickness and ribbon width, respectively, and the ribbon in its annealed state and straight strip form of the ribbon, has a saturation magnetic induction exceeding 1.60 T, and exhibits a magnetic core loss of less than 0.14 W/kg when measured at 60 Hz and at 1.3 T induction level. The ribbon is suitable for use in transformer cores, rotational machines, electrical chokes, magnetic sensors and pulse power devices.Type: GrantFiled: August 31, 2010Date of Patent: March 10, 2015Assignees: Metglas, Inc., Hitachi Metals, Ltd.Inventors: Yuichi Ogawa, Eric A. Theisen, Yuji Matsumoto, James Perrozi, Ryusuke Hasegawa
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Patent number: 8968489Abstract: A ferromagnetic amorphous alloy ribbon, a method of fabricating a ribbon and a wound transformer core are provided. The ribbon includes an alloy of FeaSibBcCd where 80.5?a?83 at. %, 0.5?b?6 at. %, 12?c?16.5 at. %, 0.01?d?1 at. % with a+b+c+d=100, and is cast from a molten state of the alloy, having a-surface tension of greater than or equal to 1.1 N/mi,. A defect length along a direction of the ribbon's length is between 5 mm and 200 mm, a defect depth less than 0.4 ×t ?m and a defect occurrence frequency less than 0.05 ×w times within 1.5 m of ribbon length, where t is the ribbon thickness and w is the ribbon width in mm. The ribbon has a saturation magnetic induction exceeding 1.60 T and a magnetic core loss of less than 0.14 W/kg when measured at 60 Hz and at 1.3 T induction level in an annealed straight strip form, and a core magnetic loss of less than 0.3 W/kg and an exciting power of less than 0.Type: GrantFiled: August 31, 2010Date of Patent: March 3, 2015Assignees: Metglas, Inc., Hitachi Metals, Ltd.Inventors: Daichi Azuma, Ryusuke Hasegawa, Yuichi Ogawa, Eric A. Theisen, Yuji Matsumoto