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公开(公告)号：US20210050034A1
公开(公告)日：2021-02-18
申请号：US16979023
申请日：2018-11-28
Applicant: UACJ CORPORATION , FURUKAWA ELECTRIC CO., LTD.
Inventor： Takuya MURATA , Kotaro KITAWAKI , Makoto YONEMITSU , Yasuo FUJII , Ryo SAKAMOTO , Hideyuki HATAKEYAMA , Sadayuki TODA
Abstract: A magnetic disk substrate is composed of an aluminum alloy substrate, a base plating layer on a surface of the aluminum alloy substrate, and a boundary region between the aluminum alloy substrate and the base plating layer. The boundary region includes a specific boundary region (D(1)I((50-84)) having A, emission intensities equal to 50% to 84% of an average Al emission intensity in an interior region of the aluminum alloy substrate in glow discharge optical emission spectroscopy in the depthwise direction from the surface of the magnetic disk substrate. The specific boundary region (D(1)I(50-84)) has a maximum Fe emission intensity (I(1)Fe(max)) higher than an average Fe emission intensity (I(1)Fe(ave)) in the interior region of the aluminum alloy substrate in the glow discharge optical emission spectroscopy.
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公开(公告)号：US20190390304A1
公开(公告)日：2019-12-26
申请号：US16482113
申请日：2018-01-30
Applicant: UACJ CORPORATION , FURUKAWA ELECTRIC CO., LTD.
Inventor： Takuya MURATA , Kotaro KITAWAKI , Makoto YONEMITSU , Naoki KITAMURA , Takashi NAKAYAMA , Hideyuki HATAKEYAMA , Ryo SAKAMOTO , Sadayuki TODA
Abstract: There are provided: an aluminum alloy magnetic disk substrate including: an aluminum alloy base material including an aluminum alloy containing 0.4 to 3.0 mass % (hereinafter, simply referred to as “%”) of Fe, 0.1 to 3.0% of Mn, 0.005 to 1.000% of Cu, and 0.005 to 1.000% of Zn, with the balance of Al and unavoidable impurities; and an electroless Ni—P plated layer formed on a surface of the aluminum alloy base material, in which the peak value (BLEI) of Fe emission intensity at an interface between the electroless Ni—P plated layer and the aluminum alloy base material, as determined by a glow discharge optical emission spectrometry device, is lower than Fe emission intensity (AlEI) in the interior of the aluminum alloy base material, as determined by the glow discharge optical emission spectrometry device; and a method for producing the aluminum alloy magnetic disk substrate.
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3.发明申请公开(公告)号：US20190172487A1
公开(公告)日：2019-06-06
申请号：US16265884
申请日：2019-02-01
Applicant: UACJ CORPORATION , FURUKAWA ELECTRIC CO., LTD.
Inventor： Kotaro KITAWAKI , Takuya MURATA , Akira HIBINO , Naoki KITAMURA , Hiroki OTA , Yasuo FUJII , Hideki TAKAHASHI , Takashi MORI
Abstract: An aluminum alloy plate for a magnetic disc substrate according to the present disclosure includes, in mass %, Mg: 3.0 to 8.0%, Cu: 0.002 to 0.150%, Zn: 0.05 to 0.60%, Fe: 0.001 to 0.060%, Si: 0.001 to 0.060%, Be: 0.00001 to 0.00200%, Cr: 0.200% or less, Mn: 0.500% or less, and Cl: 0.00300% or less, with the balance being Al and inevitable impurities, and an abundance of a Cr oxide having a maximum diameter of 3 to 10 μm observed in a metal structure is 1 or less per single side of a disc.
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公开(公告)号：US20190284668A1
公开(公告)日：2019-09-19
申请号：US16349850
申请日：2017-10-27
Applicant: UACJ CORPORATION , FURUKAWA ELECTRIC CO., LTD.
Inventor： Takuya MURATA , Kotaro KITAWAKI , Makoto YONEMITSU , Naoki KITAMURA , Yasuo FUJII , Tetsu SAKAI , Hideki TAKAHASHI , Takashi MORI
Abstract: There are provided: an aluminum alloy substrate for a magnetic disk, including 2.0 to 10.0 mass % (hereinafter, simply referred to as “%”) of Mg, 0.003 to 0.150% of Cu, 0.05 to 0.60% of Zn, 0.03 to 1.00% of Mn, and 0.00001 to 0.00200% of Be, as well as Fe restricted to 0.50% or less, Si restricted to 0.50% or less, Cr restricted to 0.30% or less, and Cl restricted to 0.005% or less, with the balance of Al and unavoidable impurities; and a method of producing the aluminum alloy substrate for a magnetic disk.
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公开(公告)号：US20190066724A1
公开(公告)日：2019-02-28
申请号：US16171005
申请日：2018-10-25
Applicant: UACJ CORPORATION , FURUKAWA ELECTRIC CO., LTD.
Inventor： Toshihiro NAKAMURA , Takashi NAKAYAMA , Kimie IMAKAWA , Wataru KUMAGAI , Sadayuki TODA , Kotaro KITAWAKI , Takuya MURATA , Yu MATSUI , Makoto YONEMITSU , Hideyuki HATAKEYAMA
Abstract: An aluminum alloy substrate for a magnetic disk, wherein the sum of the circumferences of second phase particles having the longest diameter of 4 μm or more and 30 μm or less in the metal microstructure is 10 mm/mm2 or more.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20160319401A1
公开(公告)日：2016-11-03
申请号：US15108566
申请日：2014-12-17
Applicant: UACJ CORPORATION
Inventor： Makoto ANDO , Takuya MURATA , Akio NIIKURA
IPC: C22C21/16 , B23K35/02 , B23K35/28 , C22C21/14 , C22C21/10 , C22C21/02 , C22C21/00 , C22F1/057 , C22F1/053 , C22F1/043 , C22F1/04 , B22D7/00 , B21B1/22 , B21D53/04 , F28F21/08 , B23K1/00
CPC classification number: C22C21/16 , B21B1/22 , B21B3/00 , B21D53/04 , B22D7/005 , B23K1/00 , B23K1/0012 , B23K1/19 , B23K20/04 , B23K31/02 , B23K35/002 , B23K35/0238 , B23K35/22 , B23K35/28 , B23K35/286 , B23K35/288 , B23K2101/14 , B23K2103/10 , B32B15/016 , C21D2251/00 , C22C21/00 , C22C21/02 , C22C21/10 , C22C21/14 , C22F1/04 , C22F1/043 , C22F1/053 , C22F1/057 , F28F21/084 , F28F21/089
Abstract: A highly corrosion resistant and highly formable aluminum-alloy clad material, a method for producing the same, a heat exchanger using the same and a method for producing the same are shown. The present aluminum-alloy clad material has an aluminum alloy core material, an intermediate layer material clad on one surface of the core material and a brazing filler metal clad on the surface of the intermediate layer material that is not on the core material side, wherein a crystal grain size of the intermediate layer material before brazing heating is 60 μm or more, and in a cross section of the core material in a rolling direction before brazing heating, when R1 (μm) represents the crystal grain size in a plate thickness direction, and R2 (μm) represents the crystal grain size in the rolling direction, R1/R2 is 0.30 or less.
Abstract translation: 示出了高耐腐蚀性和高成形性的铝合金包覆材料，其制造方法，使用该方法的热交换器及其制造方法。 本铝合金包覆材料具有铝合金芯材，包覆在芯材的一个表面上的中间层材料和包覆在中间层材料的不在芯材侧的表面上的钎料，其中 钎焊加热前的中间层材料的晶粒尺寸为60μm以上，在钎焊加热前的轧制方向的芯材的截面中，当R1（μm）表示板厚方向的晶粒尺寸 ，R2（μm）表示轧制方向的晶粒尺寸，R1 / R2为0.30以下。
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公开(公告)号：US20210358520A1
公开(公告)日：2021-11-18
申请号：US17296610
申请日：2019-10-25
Applicant: UACJ CORPORATION , FURUKAWA ELECTRIC CO., LTD.
Inventor： Takuya MURATA , Kotaro KITAWAKI , Makoto YONEMITSU , Hideyuki HATAKEYAMA , Ryo SAKAMOTO , Hiroki OTA
Abstract: An aluminum alloy substrate for a magnetic disk including an aluminum alloy containing 0.1 to 3.0 mass % of Fe, 0.005 to 1.000 mass % of Cu, and 0.005 to 1.000 mass % of Zn, with a balance of Al and inevitable impurities, wherein in an outer peripheral surface thereof, the number of holes having maximum diameters of 10 μm or more is 200/mm2 or less, an aluminum alloy base disk for a magnetic disk and a magnetic disk, using the aluminum alloy substrate, and methods for manufacturing these.
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公开(公告)号：US20210151077A1
公开(公告)日：2021-05-20
申请号：US16611770
申请日：2018-04-09
Applicant: UACJ CORPORATION , FURUKAWA ELECTRIC CO., LTD.
Inventor： Kotaro KITAWAKI , Takuya MURATA , Makoto YONEMITSU , Yu MATSUI , Yasuo FUJII , Ryo SAKAMOTO , Takashi NAKAYAMA , Wataru KUMAGAI
Abstract: There are provided: an aluminum alloy substrate for a magnetic disk, the aluminum alloy substrate including an aluminum alloy including 0.4 to 3.0 mass % of Fe and the balance of Al and unavoidable impurities, in which second phase particles having a longest diameter of 0.5 μm or more and less than 2.0 μm are dispersed at a distribution density of 5000 particles/mm2 or more; a method for producing the same; and a magnetic disk using the aluminum alloy substrate for a magnetic disk.
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公开(公告)号：US20210012801A1
公开(公告)日：2021-01-14
申请号：US16971860
申请日：2018-11-28
Applicant: UACJ CORPORATION , FURUKAWA ELECTRIC CO., LTD.
Inventor： Takuya MURATA , Kotaro KITAWAKI , Makoto YONEMITSU , Hideyuki HATAKEYAMA , Takashi NAKAYAMA , Ryo SAKAMOTO , Hiroki OTA
Abstract: Provided are a magnetic disk and a method of fabricating the magnetic disk. The magnetic disk includes an aluminum alloy plate fabricated by a process involving a CC method and a compound removal process, and an electroless Ni—P plating layer disposed on the surface of the plate. The aluminum alloy plate is composed of an aluminum alloy containing 0.4 to 3.0 mass % (hereinafter abbreviated simply as “%”) of Fe, 0.1% to 3.0% of Mn, 0.005% to 1.000% of Cu, 0.005% to 1.000% of Zn, with a balance of Al and unavoidable impurities. In the magnetic disk, the maximum amplitude of waviness in a wavelength range of 0.4 to 5.0 mm is 5 nm or less, and the maximum amplitude of waviness in a wavelength range of 0.08 to 0.45 mm is 1.5 nm or less.
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10.发明申请公开(公告)号：US20210008864A1
公开(公告)日：2021-01-14
申请号：US17035467
申请日：2020-09-28
Applicant: FURUKAWA ELECTRIC CO., LTD. , UACJ CORPORATION
Inventor： Toshihiro NAKAMURA , Hideki TAKAHASHI , Kimie IMAKAWA , Naoki KITAMURA , Kotaro KITAWAKI , Takuya MURATA
Abstract: A peeling apparatus for an aluminum plate material is configured to be able to peel one or a plurality of aluminum plate materials from a stack of aluminum plate materials in which a plurality of aluminum plate materials are pressure-annealed and adhered to each other. The peeling apparatus includes a vibration transmitting section that is configured to be able to abut an outer peripheral surface of an aluminum plate material and is configured to be able to apply vibration along a stacking direction of the stack to the aluminum plate material, and a transducer that generates the vibration, and transmits the vibration to the vibration transmitting section.
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