Title:
DOUBLE-LAYER ELECTROPLATED STEEL SHEET HAVING HIGH CORROSION RESISTANCE
Document Type and Number:
Japanese Patent JP2707477
Kind Code:
B2
Abstract:
PURPOSE: To provide the double-layer electroplated steel sheet contg. Cr and ferrous metals and having excellent impact adhesion resistance and corrosion resistance after coating.
CONSTITUTION: This double-layer electroplated steel sheet is constituted by forming a Zn plating layer of 0.01 to 2g/m2 deposition as a first plating layer and forming a composite electroplating layer of a Zn system contg. 5 to 30wt.% Cr, 0.1 to 10wt.% one or ≥2 kinds among Fe, Co and Ni and 0.001 to 5wt.% org. high polymer as a second layer thereon and has the excellent impact adhesion resistance and corrosion resistance after coating. A Zn or Zn alloy plating layer may further be formed as a third layer in order to further improve the corrosion resistance after coating.
Inventors:
Fumio Yamazaki
Yoshio Shindo
Yoshio Shindo
Application Number:
JP22311392A
Publication Date:
January 28, 1998
Filing Date:
August 24, 1992
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
C23C28/00; C23C28/02; C25D5/10; C25D5/26; C25D15/02; (IPC1-7): C23C28/02; C25D5/10; C25D5/26; C25D15/02
Domestic Patent References:
| JP46298A | ||||
| JP46299A | ||||
| JP3126888A | ||||
| JP63149391A | ||||
| JP1294897A | ||||
| JP6314892A | ||||
| JP6314890A | ||||
| JP6036694A | ||||
| JP58151491A | ||||
| JP54112731A | ||||
| JP6134520B2 |
Attorney, Agent or Firm:
Yu Shiina (1 person outside)
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