Surface-treated steel sheet for fuel tanks
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0687520
(1996-11-04)
|
우선권정보 |
JP-0150394 (1995-06-16) |
국제출원번호 |
PCT/JP95/02516
(1995-12-08)
|
§371/§102 date |
19961104
(19961104)
|
국제공개번호 |
WO-9617979
(1996-06-13)
|
발명자
/ 주소 |
- Nagai Hiroyuki,JPX
- Kawanishi Yoshihiro,JPX
- Kajiyama Eiji,JPX
- Kashiwagi Hiroyuki,JPX
- Tsuchiya Shinichi,JPX
|
출원인 / 주소 |
- Sumitomo Metal Industries, Ltd., JPX
|
대리인 / 주소 |
Burns, Doane, Swecker & Mathis, LLP
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
5 |
초록
▼
A surface-treated steel sheet for fuel tanks comprising a Zn--X alloy plating layer + a chromate film, in which the Zn--X alloy plating layer has an X content for the plating metal as a whole of Ni: 9-18 wt %, Co: 0.02-3 wt %, Mn: 25-45 wt %, or Cr: 8-20 wt %, the amount of deposition of the plating
A surface-treated steel sheet for fuel tanks comprising a Zn--X alloy plating layer + a chromate film, in which the Zn--X alloy plating layer has an X content for the plating metal as a whole of Ni: 9-18 wt %, Co: 0.02-3 wt %, Mn: 25-45 wt %, or Cr: 8-20 wt %, the amount of deposition of the plating layer is 5-40 g/m.sup.2 and the amount of the chromate film is 10-200 mg/m.sup.2 on a metallic Cr basis, the Zn--X alloy plating layer corresponding to at least the inner surface of a tank has: (1) cracks in the surface layer, with the density of the cracks being 1000-150000 in terms of the number of plated regions surrounded by cracks in a visual field of 1 mm.times.1 mm, and the maximum width of the cracks is not more than 0.5 .mu.m, or (2) an X/(X+Zn) atomic percentage (X.sub.2) determined by surface analysis based on ESCA with X.sub.1 .noteq.X.sub.2 (wherein X.sub.1 =average value of the X content of the plating metal as a whole), and with X.sub.2 being Ni: 5-25 at %, Co: 0.009-10 at %, Mn: 15-65 at % or Cr: 5-25 at %.
대표청구항
▼
[ We claim:] [1.] A surface-treated steel sheet for use in manufacturing fuel tanks comprising a Zn--X plating layer on both sides of a steel sheet wherein X is Ni, Co, Mn or Cr and a chromate film placed on at least one side of said Zn--X alloy plated steel sheet, in which each Zn--X alloy plating
[ We claim:] [1.] A surface-treated steel sheet for use in manufacturing fuel tanks comprising a Zn--X plating layer on both sides of a steel sheet wherein X is Ni, Co, Mn or Cr and a chromate film placed on at least one side of said Zn--X alloy plated steel sheet, in which each Zn--X alloy plating layer has an X content for the plating metal as a whole of Ni: 9-18 wt %, Co: 0.02-3 wt %, Mn: 25-45 wt %, or Cr: 8-20 wt %, the amount of deposition of each plating layer is 5-40 g/m.sup.2, the amount of Cr in the chromate film is 10-200 mg/m.sup.2, at least one Zn--X alloy plattng layer has cracks in a surface layer thereof, with the density of the cracks being 1000-150000 in terms of the number of plated regions surrounded by cracks in a visual field of 1 mm.times.1 mm, and the maximum width of the cracks is not more than 0.5 .mu.m, the chromate film penetrating the cracks in the at least one Zn--X alloy plating layer in contact therewith.
이 특허에 인용된 특허 (5)
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Suzuki Nobukazu (Ibaraki JPX) Bando Seiji (Osaka JPX) Ikeda Satoshi (Ibaraki JPX) Tsuda Tetsuaki (Nishinomiya JPX) Yakawa Atsuhisa (Nishinomiya JPX) Yoshikawa Yukihiro (Osaka JPX), Corrosion-resistant surface-coated steel sheet.
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Takahashi Teruhisa (Mishima JPX) Takahata Seiya (Mishima JPX), Steel product with heat-resistant, corrosion-resistant plating layers.
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Ikeda Satoshi (Ibaraki JPX) Suzuki Nobukazu (Ibaraki JPX), Steel strips with corrosion resistant surface layers having good appearance.
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Yonezawa, Kazuma; Tanda, Toshikuni; Ishitobi, Hirotake, Surface treatment of zinc alloy electroplated steel strips.
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Ohshima Kazuhide (Wakayama JPX) Suzuki Nobukazu (Ibaragi JPX), Zn-Ni alloy-plated steel sheet with improved impact adhesion.
이 특허를 인용한 특허 (3)
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Nakazawa, Makoto; Matsumura, Kenichiroh; Maruta, Ryoh; Matsumura, Yoshinobu; Usuda, Shigeru; Hirano, Mitsuhiko, Automobile fuel container material excellent in environment compatibility and automobile fuel container.
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Hirano, Shigeru; Kawabata, Makoto, Steel sheet for container excellent in corrosion resistance.
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Nagai Hiroyuki,JPX ; Kawanishi Yoshihiro,JPX ; Kajiyama Eiji,JPX ; Kashiwagi Hiroyuki,JPX ; Tsuchiya Shinichi,JPX, Surface-treated steel sheet having improved corrosion resistance after forming.
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