NI-PLATED STEEL SHEET FOR BATTERY CAN HAVING EXCELLENT PRESSABILITY

Title:

NI-PLATED STEEL SHEET FOR BATTERY CAN HAVING EXCELLENT PRESSABILITY

Document Type and Number:

WIPO Patent Application WO/2011/024443

Kind Code:

A1

Abstract:

Disclosed is an Ni-plated steel sheet which has excellent pressability. Specifically disclosed is an Ni-plated steel sheet which comprises, in a surface that forms the outer surface of a battery can, an Fe-Ni diffusion layer, a softened Ni layer formed thereon, and a semi-glossy Ni plating layer formed thereon. The amount of Ni deposit in the Fe-Ni diffusion layer and the softened Ni layer formed thereon is smaller than the amount of Ni deposit in the semi-glossy Ni plating layer, and the semi-glossy Ni plating layer has an average roughness (Ra) of 1.0-2.0 μm (inclusive) and a maximum height (Ry) of 5-20 μm (inclusive) as determined using a contact-type surface roughness measuring instrument. The amount of Ni deposit in the Fe-Ni diffusion layer and the softened Ni layer formed thereon is 5-8 g/m2, and the amount of Ni deposit in the semi-glossy Ni plating layer is not less than 8 g/m2. In addition, the semi-glossy Ni plating layer has a surface roughness (Ra') in an area of 2.5 μm × 2.5 μm of 5-22 nm as measured by an atomic force microscope.

Inventors:

MINAGI HIDEYUKI (JP)
OKAMATSU EIJI (JP)

Application Number:

PCT/JP2010/005213

Publication Date:

March 03, 2011

Filing Date:

August 24, 2010

Export Citation:

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Assignee:

TOYO KOHAN CO LTD (JP)
MINAGI HIDEYUKI (JP)
OKAMATSU EIJI (JP)

International Classes:

C25D5/14; C25D7/00; H01M50/119; H01M50/128; H01M50/133; H01M50/134

Foreign References:

JP2005149735A	2005-06-09
JP2005085480A	2005-03-31
JP2007122940A	2007-05-17
JP2002050324A	2002-02-15
JP2004218043A	2004-08-05
JP2007254848A	2007-10-04
JP2007302934A	2007-11-22
JPH0451012B2	1992-08-17
JPH0451021B2	1992-08-17

Other References: