Plated article and fastener stringer

BD1007137BActive Publication Date: 2026-09-06YKK CORP
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Patent Information

Application Number
BD2023274
Authority / Receiving Office
BD · BD
Patent Type
Patents
Current Assignee / Owner
Filing Date
2023-11-09
Publication Date
2026-09-06
Estimated Expiration
2039-11-09
Patent Text Reader

Abstract

Plated article includes a base member (83) including at least one base member metal element; and a plating layer (84) formed on the base member (83). The plating layer (84) includes first and second plating layers (81,82) formed in this order on the base member (83). Each of the first and second plating layers (81,82) includes at least a first metal element of plating layer that is a same metal element as the base member metal element and a second metal element of plating layer that is a different metal element than the base member metal element. Element ratio of the first metal element of plating layer continuously decreases as being away from the base member (83) across a total thickness of at least the first and second plating layers (81,82). Element ratio of the second metal element of plating layer continuously increases as being away from the base member (83) across the total thickness of at least the first and second plating layers (81,82). The second plating layer is visually distinguishable from the first plating layer (81) as a layer containing larger grains than grains of the first plating layer (81) in a first TEM (Transmission Electron Microscope) image.
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