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Title:
SURFACE-TREATED STAINLESS-STEEL SHEET WITH EXCELLENT CORROSION RESISTANCE IN SALT DAMAGE ENVIRONMENT FOR AUTOMOTIVE FUEL TANK
Document Type and Number:
WIPO Patent Application WO/2007/083580
Kind Code:
A1
Abstract:
A surface-treated stainless-steel sheet with excellent corrosion resistance in a salt damage environment for automotive fuel tanks, characterized by comprising: a ferritic stainless-steel sheet base containing 10.0-25.0 mass% chromium and having an average r value of 1.4 or higher and an overall elongation of 30% or higher or an austenitic stainless-steel sheet base containing 10.0-25.0 mass% chromium and having an overall elongation of 45% or higher and a degree of work hardening of 400 N/mm2 or lower; and a deposit layer formed over a surface of the base in an amount of 5-80 g/m2, the deposit layer containing 5-13 mass% silicon, with the remainder being unavoidable impurities and aluminum. It is further characterized in that the alloy layer formed between the deposit layer and the base iron has a thickness smaller than 5.0 µm, and that it has, formed on the deposit layer, a lubricant coating film which comprises a soluble resin and a lubricity-imparting agent, the amount of the agent being 1-30 mass% based on the soluble resin, and has a coefficient of friction of 0.15 or lower.

Inventors:
SAKAMOTO, Shunji (1-1 Tobihatacho, Tobata-ku, Kitakyushu-sh, Fukuoka 01, 8048501, JP)
坂本俊治 (〒01 福岡県北九州市戸畑区飛幡町1-1新日本製鐵株式会社 八幡製鐵所内 Fukuoka, 8048501, JP)
TANOUE, Toshio (2-2 Nihonbashi Hongokucho 3-chom, Chuo-ku Tokyo 21, 1030021, JP)
田上利男 (〒21 東京都中央区日本橋本石町三丁目2番2号新日鐵住金ステンレス株式会社内 Tokyo, 1030021, JP)
Application Number:
JP2007/050362
Publication Date:
July 26, 2007
Filing Date:
January 05, 2007
Export Citation:
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Assignee:
Nippon Steel & Sumikin Stainless Steel Corporation (2-2 Nihonbashi Hongokucho 3-chome, Chuo-ku Tokyo, 21, 1030021, JP)
新日鐵住金ステンレス株式会社 (〒21 東京都中央区日本橋本石町三丁目2番2号 Tokyo, 1030021, JP)
SAKAMOTO, Shunji (1-1 Tobihatacho, Tobata-ku, Kitakyushu-sh, Fukuoka 01, 8048501, JP)
坂本俊治 (〒01 福岡県北九州市戸畑区飛幡町1-1新日本製鐵株式会社 八幡製鐵所内 Fukuoka, 8048501, JP)
TANOUE, Toshio (2-2 Nihonbashi Hongokucho 3-chom, Chuo-ku Tokyo 21, 1030021, JP)
International Classes:
C23C28/00; C22C38/00; C23C2/12; B32B15/08; B60K15/03; C10M101/02; C10M105/24; C10M107/02; C10M107/38; C10M149/14; C10M151/04; C10M169/04; C10N30/00; C10N30/06; C10N30/12; C10N40/24; C10N50/02; C22C38/50
Attorney, Agent or Firm:
AOKI, Atsushi et al. (SEIWA PATENT & LAW, Toranomon 37 Mori Bldg. 5-1, Toranomon 3-chom, Minato-ku Tokyo 23, 1058423, JP)
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