To suppress surface appearance defects (surface irregularity, color tone deviation) observed in an electrogalvanized steel strip which is subjected to electrogalvanized plating after Ni strike plating.
The electrogalvanized steel strip includes: a first layer which is an Ni plating layer with an average deposition amount of 1-30 mg/m2; on top of the first layer, a second layer consisting of organic compounds (such as thiourea) having one or more of amine compounds (such as polyethylene imine) and an S-containing functional group, and having a deposition amount, in terms of the total amount of the organic compounds, of 0.002 mg/m2 or more and 1 mg/m2 or less; a third layer consisting of the electrogalvanized plating layer containing 95 mass% or more of Zn; and in certain instances, a fourth layer consisting of a chromium-free coating. Dispersion in brightness difference of a surface of an outermost layer which is the electrogalvanizing layer or the chromium-free coating layer is 2% or less with respect to an average brightness so that a beautiful appearance in which unevenness of the surface can not be observed by a visual observation is presented.
FUTABA KEIJI
NAKAGISHI TETSUYUKI
SHIBATA DAISUKE
ASAHI KAGAKU KOGYO CO LTD
| JP2002309393A | 2002-10-23 | |||
| JP2003064493A | 2003-03-05 | |||
| JPH10152792A | 1998-06-09 | |||
| JPH08188898A | 1996-07-23 | |||
| JPH116095A | 1999-01-12 | |||
| JPH07166371A | 1995-06-27 | |||
| JPH08134688A | 1996-05-28 | |||
| JP2002194567A | 2002-07-10 | |||
| JP2002309393A | 2002-10-23 | |||
| JP2003064493A | 2003-03-05 | |||
| JPH10152792A | 1998-06-09 | |||
| JPH08188898A | 1996-07-23 | |||
| JPH116095A | 1999-01-12 | |||
| JPH07166371A | 1995-06-27 | |||
| JPH08134688A | 1996-05-28 | |||
| JP2002194567A | 2002-07-10 |
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