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1. (WO2017038048) SN-PLATED ARTICLE AND METHOD FOR MANUFACTURING SAME

Pub. No.:    WO/2017/038048    International Application No.:    PCT/JP2016/003830
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Wed Aug 24 01:59:59 CEST 2016
IPC: C25D 5/50
C25D 5/12
C25D 7/00
H01R 13/03
H01R 43/16
Applicants: DOWA METALTECH CO., LTD.
DOWAメタルテック株式会社
YAZAKI CORPORATION
矢崎総業株式会社
Inventors: SONODA, Yuta
園田 悠太
NARIEDA, Hiroto
成枝 宏人
ENDO, Hideki
遠藤 秀樹
SUGAWARA, Akira
菅原 章
KOTANI, Hirotaka
小谷 浩隆
TOYOIZUMI, Jyun
豊泉 隼
KONDO, Takaya
近藤 貴哉
KISHIBATA, Yuya
岸端 裕矢
Title: SN-PLATED ARTICLE AND METHOD FOR MANUFACTURING SAME
Abstract:
A Sn-plated article on which a topmost layer (14) containing Sn is formed on the surface of a ground layer (12) composed of Ni formed on the surface of a substrate (10) composed of copper or a copper alloy, wherein the topmost layer (14) comprises a Cu-Sn alloy layer (14a) composed of numerous crystal grains of a Cu-Sn alloy, a Sn layer (14b) composed of Sn formed in recesses between the crystal grains of the Cu-Sn alloy adjacent to each other in the topmost surface of the Cu-Sn alloy layer (14a) and having an average thickness of 0.01-0.20 µm, and a plurality of Cu-Ni-Sn alloy layers (14c) composed of a Cu-Ni-Sn alloy and disposed at a distance from each other on the ground layer (12) side inside the Cu-sn alloy layer (14a).