Steel foil for power storage device container, power storage device container, power storage device, and manufacturing method of steel foil for power storage device container
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United States of America Patent
Stats
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Feb 12, 2019
Grant Date -
Jun 15, 2017
app pub date -
Jul 22, 2015
filing date -
Jul 22, 2014
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Abstract
A steel foil for a power storage device container includes a rolled steel foil, a nickel layer formed on a surface of the rolled steel foil, and a chromium-based surface treatment layer formed on a surface of the nickel layer. The nickel layer includes an upper layer portion which is in contact with the chromium-based surface treatment layer and contains Ni of 90 mass % or more among metal elements, and a lower layer portion which is in contact with the rolled steel foil and contains Ni of less than 90 mass % among the metal elements and Fe. <111> polar density in a reverse pole figure of the nickel layer in a rolling direction is 3.0 to 6.0. The nickel layer has a sub-boundary which is a boundary between two crystals having a relative orientation difference of 2° to 5°, and a large angle boundary which is a boundary between two crystals having the relative orientation difference of equal to or more than 15°. The average value of a ratio L5/L15 between a boundary length L5 which is the length of the sub-boundary, and a boundary length L15 which is the length of the large angle boundary, is equal to or more than 1.0.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
NIPPON STEEL CORPORATION | 6-1 MARUNOUCHI 2-CHOME CHIYODA-KU TOKYO 100-8071 |
International Classification(s)
- C23C:COATING METALLIC MATERIAL; COATING MATERIAL WITH M....
- C25D:PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC ....
- H01M:PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT....
- C21D:MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS....
- C22C:ALLOYS
- H01G:CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWI....
- [Classification Symbol]
- [Patents Count]
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Goto, Yasuto | Kimitsu, JP | 39 | 39 |
Ibaragi, Masaharu | Kisarazu, JP | 16 | 36 |
Ishizuka, Kiyokazu | Himeji, JP | 38 | 53 |
Nagasaki, Shuji | Sagamihara, JP | 14 | 76 |
Nose, Koichi | Chiba, JP | 64 | 285 |
Unno, Hiroto | Yokohama, JP | 12 | 18 |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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