US 12,325,928 B2
Roughened nickel-plated sheet
Shinichirou Horie, Kudamatsu (JP); Etsuro Tsutsumi, Kudamatsu (JP); Toshifumi Koyanagi, Kudamatsu (JP); Koh Yoshioka, Kudamatsu (JP); Kyoko Takano, Kudamatsu (JP); Shunki Obata, Kudamatsu (JP); Satoko Harada, Kudamatsu (JP); Keishi Katsura, Kudamatsu (JP); and Misato Ueno, Kudamatsu (JP)
Assigned to TOYO KOHAN CO., LTD., Tokyo (JP)
Appl. No. 17/794,509
Filed by TOYO KOHAN CO., LTD., Tokyo (JP)
PCT Filed Jan. 22, 2021, PCT No. PCT/JP2021/002333
§ 371(c)(1), (2) Date Jul. 21, 2022,
PCT Pub. No. WO2021/149821, PCT Pub. Date Jul. 29, 2021.
Claims priority of application No. 2020-008677 (JP), filed on Jan. 22, 2020.
Prior Publication US 2023/0057775 A1, Feb. 23, 2023
Int. Cl. C25D 5/00 (2006.01); C25D 5/36 (2006.01)
CPC C25D 5/605 (2020.08) [C25D 5/36 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A roughened nickel-plated sheet comprising a roughened nickel layer on at least one surface of a metal substrate as the outermost layer thereof, the roughened nickel layer being formed of a plurality of nickel protrusions,
wherein when the roughened nickel-plated sheet is measured with a focused ion beam scanning electron microscope (FIB-SEM), and the structure of the roughened nickel layer is measured at height positions from images captured with the focused ion beam scanning electron microscope,
the absolute value Crate(Ni90%_Ni50%) of the rate of the change in nickel occupancy to the change in height from a height position DNi90% with a nickel occupancy of 90% to a height position DNi50% with a nickel occupancy of 50% is 65%/μm or less,
the nickel occupancy C2.0 at a height position located 2.0 μm from a base position of the roughened nickel layer toward the surface in the height direction is 15% or more, and
the number N2.0 of nickel protrusions present at the height position located 2.0 μm from the base position toward the surface is 20 protrusions/136.5 μm2 or more.