US20150050510A1 - Amorphous alloy ribbon - Google Patents

Amorphous alloy ribbon Download PDF

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US20150050510A1
US20150050510A1 US14/384,968 US201314384968A US2015050510A1 US 20150050510 A1 US20150050510 A1 US 20150050510A1 US 201314384968 A US201314384968 A US 201314384968A US 2015050510 A1 US2015050510 A1 US 2015050510A1
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atom
amorphous alloy
content
alloy ribbon
ribbon
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Takayuki Motegi
Daichi Azuma
Hajime Itagaki
Yoshio Bizen
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Proterial Ltd
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Hitachi Metals Ltd
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Assigned to HITACHI METALS, LTD. reassignment HITACHI METALS, LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AZUMA, DAICHI, BIZEN, YOSHIO, ITAGAKI, HAJIME, MOTEGI, TAKAYUKI
Publication of US20150050510A1 publication Critical patent/US20150050510A1/en
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C45/00—Amorphous alloys
    • C22C45/02—Amorphous alloys with iron as the major constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0611—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a single casting wheel, e.g. for casting amorphous metal strips or wires
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/003—Making ferrous alloys making amorphous alloys
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals

Definitions

  • the present invention relates to an amorphous alloy ribbon.
  • An amorphous alloy ribbon is regarded as a promising industrial material for various end uses because of its superb characteristics.
  • an Fe-base amorphous alloy ribbon containing Fe (iron) as a main component for example, an Fe—B—Si-base amorphous alloy ribbon containing Fe (iron) as a main component, and additionally B (boron) and Si (silicon)
  • Fe (iron) as a main component
  • B (boron) and Si silicon
  • an Fe-base amorphous alloy ribbon has a space factor generally lower than a grain-oriented electrical steel sheet, a higher space factor has been desired in the Fe-base amorphous alloy ribbon.
  • a method of adjusting production conditions such as a distance between a molten metal nozzle tip and a chill roll surface, the temperature of a chill roll, the circumferential speed of a chill roll, the surrounding atmosphere of a chill roll, the extrusion pressure of a molten metal nozzle, or a surface condition of a chill roll, is known (see, for example, Japanese Patent Application Laid-Open (JP-A) No. 2006-281317, JP-A No. H9-216036, or JP-A No. 2007-217757).
  • JP-A Japanese Patent Application Laid-Open
  • an object of the invention is to provide an amorphous alloy ribbon with a superior space factor, in which brittleness is suppressed and which has a magnetic flux density that is maintained at a high level.
  • the invention can provide an amorphous alloy ribbon with a superior space factor, in which brittleness is suppressed and which has a magnetic flux density that is maintained at a high level.
  • FIG. 1 is a conceptual schematic cross-sectional view of an embodiment of an amorphous alloy ribbon production apparatus appropriate for production of an amorphous alloy ribbon according to the invention.
  • FIG. 2 is a schematic view of a sample used for evaluation of brittleness.
  • FIG. 3 is a conceptual schematic view of a sample piece and a tear line after tearing for evaluation of brittleness.
  • a numerical range expressed by “from x to y” includes herein the values of x and y in the range as the minimum and maximum values, respectively.
  • An amorphous alloy ribbon according to the invention (hereinafter also referred to simply as a “ribbon”) consists of Fe, Si, B, C, and unavoidable impurities, and the content of Si is from 8.5 atom % to 9.5 atom % (in other words, not less than 8.5 atom % and not more than 9.5 atom %), and the content of B is from 10.0 atom % to less than 12.0 atom % when the total content of Fe, Si, and B is 100.0 atom %, and the content of C relative to the total content of 100.0 atom % is from 0.2 atom % to 0.6 atom % (in other words, not less than 0.2 atom % and not more than 0.6 atom %), and the ribbon has a thickness of from 10 ⁇ m to 40 ⁇ m (in other words, not less than 10 ⁇ m and not more than 40 ⁇ m), and a width of from 100 mm to 300 mm (in other words, not less than 100 mm and
  • the inventors found that by adding C to a composition for an Fe—B—Si-base amorphous alloy ribbon having a Si content of 8.5 atom % or more when the total content of Fe, Si, and B is 100.0 atom %, at a content of from 0.2 atom % to 0.6 atom % with respect to the total amount of 100.0 atom %, the space factor can be improved while suppressing the brittleness and, moreover, a high magnetic flux density can be maintained, and completed the invention based on these findings.
  • the invention provides an amorphous alloy ribbon with a superior space factor, in which brittleness is suppressed and which has a magnetic flux density that is maintained at a high level.
  • an amorphous alloy ribbon according to the invention exhibits a high space factor (for example, space factor of 86% or more).
  • the space factor of an amorphous alloy ribbon according to the invention is preferably 88% or more, and more preferably 89% or more.
  • Space factor means herein a space factor (%) measured according to ASTM A900/A900M-01 (2006).
  • the content of C in an amorphous alloy ribbon according to the invention based on the total content of Fe, Si, and B as 100.0 atom % (hereinafter also referred to simply as “content of C”) is from 0.2 atom % to 0.6 atom %.
  • the content of C is preferably from 0.3 atom % to 0.6 atom %.
  • the content of Si in an amorphous alloy ribbon according to the invention based on the total content of Fe, Si, and B as 100.0 atom % (hereinafter also referred to simply as “content of Si”) is from 8.5 atom % to 9.5 atom %.
  • the content of Si in an amorphous alloy ribbon according to the invention is from 8.5 atom % or more, a suppression effect on aging deterioration of the ribbon can be expected.
  • the content of Si is more preferably 9.0 atom % or more.
  • the content of B in an amorphous alloy ribbon according to the invention based on the total content of Fe, Si, and B as 100.0 atom % is from 10.0 atom % to less than 12.0 atom % (preferably from 10.0 atom% to 11.5 atom %).
  • the content of B is 12.0 atom % or more, it is not preferable because the cost of source materials increases. Therefore, the content of B is less than 12.0 atom %, but preferably 11.5 atom % or less.
  • the content of B is preferably 10.5 atom % or more, and more preferably 11.0 atom % or more.
  • content of Fe in an amorphous alloy ribbon according to the invention based on the total content of Fe, Si, and B as 100.0 atom % (hereinafter also referred to simply as “content of Fe”), insofar as the content of Si is from 8.5 atom % to 9.5 atom %, and the content of B is from 10.0 atom % to less than 12.0 atom %.
  • the content of Fe is more than 78.5 atom % but not more than 81.5 atom %, preferably from 79.0 atom % to 81.5 atom %, more preferably from 79.0 atom % to 81.0 atom %, further preferably from 79.0 atom % to 80.5 atom %, and especially preferably from 79.0 atom % to 80.0 atom %.
  • a preferable combination of contents of Fe, Si, and B is a combination of the content of Fe from 79.0 atom % to 81.5 atom % (more preferably from 79.0 atom % to 81.0 atom %, further preferably from 79.0 atom % to 80.5 atom %), the content of Si from 8.5 atom % to 9.5 atom %, and the content of B from 10.0 atom % to less than 12.0 atom % (preferably from 10.0 atom % to 11.5 atom %); a more preferable combination is a combination of the content of Fe from 79.0 atom % to 80.0 atom %, the content of Si from 8.5 atom % to 9.5 atom %, and the content of B from 10.5 atom % to 11.5 atom %; and an especially preferable combination is a combination of the content of Fe from 79.0 atom % to 80.0 atom %, the content of Si from 9.0 atom
  • An amorphous alloy ribbon according to the invention also contains unavoidable impurities in addition to the above elements (Fe, Si, B, and C).
  • unavoidable impurities refer to impurities that are unavoidably mixed in during a production process of an amorphous alloy ribbon, or during a production process of a mother alloy or a molten alloy, which are source materials for the ribbon.
  • the unavoidable impurities include Mn, S, Cr, P, Ti, Ni, Al, Co, Zr, Mo, and Cu.
  • the thickness (web thickness) of an amorphous alloy ribbon according to the invention is from 10 ⁇ m to 40 ⁇ m.
  • the thickness is 10 ⁇ m or more, preferably 15 ⁇ m of more, and more preferably 20 ⁇ m or more.
  • the thickness is 40 ⁇ m or less, the thickness is preferably 35 ⁇ m or less, and more preferably 30 ⁇ m or less.
  • the width of an amorphous alloy ribbon according to the invention is from 100 mm to 300 mm.
  • the width is 100 mm or more, a practical transformer can be produced favorably.
  • the width is 100 mm or more, the width is more preferably 125 mm or more.
  • the width exceeds 300 mm, it becomes difficult to obtain a ribbon having uniform thickness in the width direction, and due to the uneven form, partial embrittlement or a decrease in a magnetic flux density (B 1 ) may occur.
  • the width is 300 mm or less, it is more preferably 275 mm or less.
  • a production method of an amorphous alloy ribbon according to the invention there is no particular restriction on a production method of an amorphous alloy ribbon according to the invention, and a publicly known method such as a liquid quenching method (a single-roll method, a twin-roll method, a centrifugation method, or the like) can be applied.
  • a liquid quenching method a single-roll method, a twin-roll method, a centrifugation method, or the like
  • a single-roll method is a production method, in which production equipment is relatively simple, and stable production is possible, and has excellent industrial productivity.
  • FIG. 1 is a conceptual schematic cross-sectional view of an embodiment of an amorphous alloy ribbon production apparatus appropriate for production of an amorphous alloy ribbon according to the invention.
  • An amorphous alloy ribbon production apparatus 100 shown in FIG. 1 is an amorphous alloy ribbon production apparatus based on a single-roll method.
  • the amorphous alloy ribbon production apparatus 100 is provided with a crucible 20 provided with a molten metal nozzle 10 , and a chill roll 30 , a surface of which faces a tip of the molten metal nozzle 10 .
  • FIG. 1 is a cross-sectional view of the amorphous alloy ribbon production apparatus 100 sectioned by a plane perpendicular to the axis direction of the chill roll 30 and to the width direction of an amorphous alloy ribbon 22 C (the two directions are identical).
  • the crucible 20 has an internal space that can accommodate a molten alloy 22 A, which is a source material for an amorphous alloy ribbon, and the internal space is communicated with a molten metal flow channel in a molten metal nozzle 10 .
  • a molten alloy 22 A accommodated in the crucible 20 can be discharged through the molten metal nozzle 10 to a chill roll 30 (in FIG. 1 , the discharge direction and the flow direction of the molten alloy 22 A is represented by the arrow Q).
  • a crucible 20 and a molten metal nozzle 10 may be configured as an integrated body or as separate bodies.
  • a high-frequency coil 40 is placed as a heating means.
  • a crucible 20 in a state accommodating a mother alloy of an amorphous alloy ribbon can be heated to form a molten alloy 22 A in the crucible 20 , or a molten alloy 22 A supplied from the outside to the crucible 20 can be kept in a liquid state.
  • a molten metal nozzle 10 has an opening for discharging a molten alloy (a discharge port).
  • the opening is a rectangular (slit shape) opening.
  • the length of a long side of a rectangular opening corresponds to the width of an amorphous alloy ribbon to be produced.
  • the length of a long side of a rectangular opening is preferably from 100 mm to 300 mm.
  • the lower limit of the length of a long side is more preferably 125 mm.
  • the upper limit of the length of a long side is more preferably 275 mm.
  • the distance between a tip of a molten metal nozzle 10 and a surface of a chill roll 30 is so small, that, when a molten alloy 22 A is discharged through a molten metal nozzle 10 , a puddle 22 B of a molten alloy 22 A is formed.
  • the distance may be in a range ordinarily set for a single-roll method, it is preferably 500 ⁇ m or less, and more preferably 300 ⁇ m or less.
  • the distance is preferably 50 ⁇ m or more.
  • a chill roll 30 is configured such that it rotates axially to the direction of the arrow P.
  • a cooling medium such as water is circulated inside a chill roll 30 , with which a molten alloy 22 A coated (discharged) on a surface of a chill roll 30 can be cooled to form an amorphous alloy ribbon 22 C.
  • the material of a chill roll 30 is preferably a material having high thermal conductivity, such as Cu, or a Cu alloy (a Cu—Be alloy, a Cu—Cr alloy, a Cu—Zr alloy, a Cu—Zn alloy, a Cu—Sn alloy, a Cu—Ti alloy, or the like).
  • a Cu alloy a Cu—Be alloy, a Cu—Cr alloy, a Cu—Zr alloy, a Cu—Zn alloy, a Cu—Sn alloy, a Cu—Ti alloy, or the like.
  • the arithmetic average roughness (Ra) of a surface of a chill roll 30 is preferably 0.5 ⁇ m or less, and more preferably 0.3 ⁇ m or less.
  • the arithmetic average roughness (Ra) of a surface of a chill roll 30 is preferably 0.1 ⁇ m or more from a viewpoint of processability for adjustment of the surface roughness.
  • a surface of a chill roll 30 may be polished by a brush or the like during production of an alloy ribbon in order to keep the preferable surface roughness (Ra).
  • a chill roll 30 a chill roll ordinarily used in a single-roll method may be used.
  • the diameter of a chill roll 30 is preferably 200 mm or more, and more preferably 300 mm or more. Meanwhile, from a viewpoint of cooling power, the diameter is 700 mm or less.
  • the surface roughness (the arithmetic average roughness Ra) means herein surface roughness measured according to JIS B 0601 (2001).
  • a peeling gas nozzle 50 is placed. This blows a peeling gas (for example, a nitrogen gas, or a high pressure gas such as compressed air) in the direction (the direction of a dashed line arrow in FIG. 2 ) opposite to the rotational direction of a chill roll 30 (arrow P), such that peeling of an amorphous alloy ribbon 22 C from a chill roll 30 can be performed more efficiently.
  • a peeling gas for example, a nitrogen gas, or a high pressure gas such as compressed air
  • An amorphous alloy ribbon production apparatus 100 may be provided with another component in addition to the above components (for example, a wind-up roll for reeling up a produced amorphous alloy ribbon 22 C, or a gas nozzle for blowing a CO 2 gas, a N 2 gas, or the like to a puddle 22 B of a molten alloy or its vicinity).
  • a wind-up roll for reeling up a produced amorphous alloy ribbon 22 C
  • a gas nozzle for blowing a CO 2 gas, a N 2 gas, or the like to a puddle 22 B of a molten alloy or its vicinity.
  • a basic configuration of an amorphous alloy ribbon production apparatus 100 may be similar to a configuration of an amorphous alloy ribbon production apparatus based on a conventional single-roll method (for example, see Japanese Patent No. 3494371, Japanese Patent No. 3594123, Japanese Patent No. 4244123, and Japanese Patent No. 4529106).
  • a molten alloy 22 A as a source material for an amorphous alloy ribbon according to the invention is prepared in a crucible 20 .
  • the molten alloy 22 A may be a molten alloy obtained by melting a mother alloy with the composition of an amorphous alloy ribbon according to the invention, or a molten alloy obtained by firstly preparing a mother alloy of a composition equivalent to that of an amorphous alloy ribbon according to the invention excluding C (carbon), and then dissolving C (carbon) in the molten metal of the mother alloy.
  • the temperature of a molten alloy 22 A is preferably 1210° C. or more, and more preferably 1260° C. or more. Further, from a viewpoint of suppression of formation of an air pocket to be formed on the side of a contact surface with a surface of a chill roll 30 , the temperature of a molten alloy 22 A is preferably 1410° C. or less, and more preferably 1360° C. or less.
  • a molten alloy is discharged through a molten metal nozzle 10 onto a surface of a chill roll 30 rotating in the direction of the arrow P, while forming a puddle 22 B, to form a coated film of the molten alloy on the surface of a chill roll 30 , and the coated film is cooled to form an amorphous alloy ribbon 22 C.
  • the amorphous alloy ribbon 22 C formed on the surface of a chill roll 30 is peeled from the surface of a chill roll 30 by blowing a peeling gas from a peeling gas nozzle 50 and reeled up on a wind-up roll (not illustrated) in a form of a roll for recovery.
  • Operations from discharging of a molten alloy to reeling-up (recovery) of an amorphous alloy ribbon are carried out continuously, and as the result, a long amorphous alloy ribbon having, for example, a longitudinal direction length of 3000 m or more can be obtained.
  • the discharge pressure of a molten alloy is preferably 10 kPa or more, and more preferably 15 kPa or more. Meanwhile, the discharge pressure is preferably 30 kPa or less, and more preferably 25 kPa or less.
  • the space factor can be further improved.
  • the rotation speed of a chill roll 30 may be in a range ordinarily set for a single-roll method, and a circumferential speed of 40 m/s or less is preferable, and a circumferential speed of 30 m/s or less is more preferable. Meanwhile, the rotation speed in terms of a circumferential speed of 10 m/s or more is preferable, and a circumferential speed of 20 m/s or more is more preferable.
  • the temperature of a surface of a chill roll 30 after elapse of 5 sec or more from the initiation of a supply of a molten alloy onto a surface of a chill roll 30 is preferably 80° C. or more, and more preferably 100° C. or more. Meanwhile, the temperature is preferably 300° C. Of less, and more preferably 250° C. or less.
  • the cooling rate of a molten alloy by a chill roll 30 is preferably 1 ⁇ 10 5 ° C./s or more, and more preferably 1 ⁇ 10 6 ° C./s or more.
  • An amorphous alloy ribbon production apparatus configured similarly to the amorphous alloy ribbon production apparatus 100 in FIG. 1 was prepared.
  • As a chill roll the following chill roll was prepared.
  • a molten alloy composed of Fe, Si, B, C, and unavoidable impurities (hereinafter also referred to as an “Fe—Si—B—C-base molten alloy”) was prepared in a crucible. More particularly, a mother alloy composed of Fe, Si, B, and unavoidable impurities was melted, and carbon was added to the obtained molten metal, and melted and mixed to prepare a molten alloy for producing an amorphous alloy ribbon as shown in Table 1 below.
  • the Fe—Si—B—C-base molten alloy was discharged from a molten metal nozzle having a rectangular (slit shape) opening with a long side length of 142 mm and a short side length of 0.6 mm, through the opening onto a surface of a rotating chill roll for rapid solidification to produce 1000 kg of an amorphous alloy ribbon having a width of 142 mm and a thickness of 25 ⁇ m.
  • the content of Fe (atom %), the content of Si (atom %), and the content of B (atom %) are respectively based on a total content of Fe, Si, and B of 100.0 atom %.
  • the content of C (atom %) is based on the total content of Fe, Si, and B of 100.0 atom % (in other words, an addition amount of C with respect to the total content of 100.0 atom %).
  • the contents were measured by inductively coupled plasma atomic emission spectrophotometry.
  • the brittleness was evaluated as follows (quantification of brittleness).
  • brittleness values obtained by the evaluation are shown in Table 1 below. With respect to the evaluation result, a lower brittleness value means better suppression of brittleness, and a higher brittleness value means severer brittleness.
  • FIG. 2 is a schematic view of a sample used for evaluation of brittleness
  • FIG. 3 is a conceptual schematic view of a sample piece and a tear line after tearing for evaluation of brittleness.
  • brittleness was performed such that a sample having a length of 1250 mm (equivalent to the circumference of the chill roll) was cut out from an amorphous alloy ribbon as shown in FIG. 2 , the sample was bisected with respect to the longitudinal direction (cut at the position of the dot-dash line in FIG. 2 ) to yield 2 sample pieces, and the sample pieces were used for the evaluation.
  • a longitudinal end of the sample piece was notched as a tear starting point, and a tearing manipulation of applying a shear force to the sample piece was conducted (the manipulation is hereinafter referred to as “tearing manipulation”).
  • the tearing manipulation was carried out along the longitudinal direction of a sample piece from a longitudinal end to the other longitudinal end.
  • the tearing direction at a tearing manipulation is shown in FIG. 3 as the arrow R.
  • a tear line formed actually by the tearing manipulation (for example, the tear line T in FIG. 3 ) was observed visually for examining the number of steps of 6 mm or more in the width direction of the sample piece generated in the tear line (a step with a height k of 6 mm or more in FIG. 3 ).
  • grade 1 means brittleness being suppressed maximally
  • grade 5 means maximally brittle.
  • the evaluation of brittleness per tear line was conducted for each of: the center in the width direction, a position 6.4 mm from a width-direction end of a sample piece (2 sides), and a position 12.8 mm from a width-direction end of a sample piece (2 sides) as shown in FIG. 2 .
  • the valuation positions are shown in FIG. 2 as dashed lines. There are 5 evaluation positions in each of bisected sample pieces, and therefore there are 10 positions per each sample. In other words, there are 10 tear lines per sample.
  • a magnetic flux density (B 1 , 60 Hz) was measured for an amorphous alloy ribbon of each Example and Comparative Example according to ASTM A932/A932M-01 by applying a magnetic field of frequency 60 Hz and 79.557 A/m.
  • Example 1 79.5 9.2 11.3 100.0 0.2 86.2 1.4 1.505
  • Example 2 79.3 9.3 11.4 100.0 0.3 88.1 1.4 1.506
  • Example 3 79.4 9.2 11.4 100.0 0.5 89.8 1.0 1.521
  • Example 4 79.3 9.3 11.4 100.0 0.6 89.3 1.515
  • Example 5 79.5 9.2 11.3 100.0 0.3 88.3 1.1 1.504
  • Example 6 79.5 9.1 11.4 100.0 0.3 88.3 1.4 1.527
  • Example 8 79.4 9.1 11.5 100.0 0.3 88.4 1.0 1.517
  • Example 9 79.1 9.4 11.5 100.0 0.3 88.1 1.0 1.513
  • Comparative 79.4 9.3 11.3 100.0 0.7 89.0 4.0
  • the content of Fe (at %), the content of Si (at %), and the content of B (at %) are respectively based on the total content of Fe, Si, and B as 100.0 at %.
  • the content of C (at %) is based on the total content of Fe, Si, and B as 100.0 at % (in other words, an addition amount of C with respect to the total content of Fe, Si, and B as 100.0 at %).
  • a smaller brittleness value means better suppression of brittleness, and a larger value means severer brittleness.

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  • Chemical & Material Sciences (AREA)
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  • Mechanical Engineering (AREA)
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CN (1) CN104245993A (enrdf_load_stackoverflow)
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US20170365392A1 (en) * 2014-12-11 2017-12-21 Metglas, Inc. Fe-Si-B-C-BASED AMORPHOUS ALLOY RIBBON AND TRANSFORMER CORE FORMED THEREBY
US10450638B2 (en) 2014-11-25 2019-10-22 Hitachi Metals, Ltd. Amorphous alloy ribbon and method for manufacturing same
EP3584020A4 (en) * 2017-02-14 2020-08-19 Hitachi Metals, Ltd. METHOD AND DEVICE FOR MANUFACTURING FE-BASED AMORPHOUS ALLOY TAPE, AND FE-BASED AMORPHOUS ALLOY TAPE WOUND BODY
CN111971762A (zh) * 2018-03-02 2020-11-20 Tdk株式会社 磁芯及其制造方法以及线圈部件
US11158449B2 (en) * 2015-03-12 2021-10-26 Guglielmo MONTAGNANI Method and device for manufacturing transformers with a core made of amorphous material, and transformer thus produced
US11255007B2 (en) 2016-04-04 2022-02-22 Jfe Steel Corporation Amorphous alloy thin strip

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JP6806080B2 (ja) * 2015-11-26 2021-01-06 日立金属株式会社 Ｆｅ基アモルファス合金リボン
CN107267889B (zh) * 2017-06-14 2019-11-01 青岛云路先进材料技术股份有限公司 一种具有低应力敏感性的铁基非晶合金及其制备方法
US12227818B2 (en) * 2017-07-04 2025-02-18 Proterial, Ltd. Amorphous alloy ribbon, production method therefor, and amorphous alloy ribbon piece
WO2020066989A1 (ja) * 2018-09-26 2020-04-02 日立金属株式会社 Ｆｅ基ナノ結晶合金薄帯の製造方法、磁心の製造方法、Ｆｅ基ナノ結晶合金薄帯、及び磁心
CN114574785A (zh) * 2020-12-01 2022-06-03 安泰非晶科技有限责任公司 一种非晶纳米晶合金带材及其制造方法
CN115247242A (zh) * 2021-04-25 2022-10-28 安泰非晶科技有限责任公司 一种非晶合金带材及其制备方法

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