公开(公告)号：US10217970B2

公开(公告)日：2019-02-26

申请号：US15717960

申请日：2017-09-28

Applicant: FDK CORPORATION

Inventor： Shigeyuki Kuniya ,  Takuya Suzuki

IPC: H01M2/02 ,  B32B15/01 ,  C25D5/50 ,  C25D7/00 ,  C22C38/00 ,  H01M6/08 ,  H01M10/24 ,  H01M6/04

Abstract: A battery can forming steel plate that configures an electrode can (a positive electrode can) of an alkaline battery and is to be formed into a battery can by presswork, the steel plate as a base material includes an iron and nickel diffusion layer or an iron and nickel-cobalt alloy diffusion layer that is formed by forming a nickel plated layer or a nickel-cobalt alloy plated layer with a thickness of 0.5 to 2.0 μm on an inner surface of a battery can of a steel plate (base material steel plate) as a base material, and subsequently performing heat diffusion treatment on the nickel plated layer or the nickel-cobalt alloy plated layer. An average number of crystal grains per 0.25 mm2 unit area of the steel plate as the base material is equal to or more than 12.3.

公开(公告)号：US20180019446A1

公开(公告)日：2018-01-18

申请号：US15717960

申请日：2017-09-28

Applicant: FDK CORPORATION

Inventor： Shigeyuki Kuniya ,  Takuya Suzuki

IPC: H01M2/02 ,  B32B15/01 ,  H01M10/24

CPC classification number: H01M2/02 ,  B32B15/015 ,  B32B2457/10 ,  C22C38/00 ,  C25D5/50 ,  C25D7/00 ,  H01M2/026 ,  H01M2/0287 ,  H01M2/0292 ,  H01M6/04 ,  H01M6/08 ,  H01M6/085 ,  H01M10/24

Abstract: As a battery can forming steel plate that configures an electrode can (a positive electrode can) of an alkaline battery and is to be formed into a battery can by presswork, the steel plate as a base material includes an iron and nickel diffusion layer or an iron and nickel-cobalt alloy diffusion layer that is formed by forming a nickel plated layer or a nickel-cobalt alloy plated layer with a thickness of 0.5 to 2.0 μm on an inner surface of a battery can of a steel plate (base material steel plate) as a base material, and subsequently performing heat diffusion treatment on the nickel plated layer or the nickel-cobalt alloy plated layer. An average number of crystal grains per 0.25 mm2 unit area of the steel plate as the base material is equal to or more than 12.3.