Silver-plated product

Patent metadata

Field	Value
Publication number	US-10072348-B2
Application number	US-201414777706-A
Country	US
Kind code	B2
Filing date	Feb 18, 2014
Priority date	Mar 18, 2013
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

There is provided a silver-plated product wherein a surface layer of silver is formed on the surface of an underlying layer of nickel formed on a base material, the silver-plated product having a good bendability. In a silver-plated product which comprises a base material of copper or a copper alloy, an underlying layer of nickel formed on the base material, and a surface layer of silver formed on the surface of the underlying layer, the surface layer having a thickness of 10 μm or less, the thickness of the underlying layer is 2 μm or less, preferably 1.5 μm or less, and the area fraction in {200} orientation of the surface layer is 15% or more, preferably 25% or more.

First claim

The invention claimed is:

1. A silver-plated product comprising:
a base material of copper or a copper alloy;
an underlying layer of nickel which is formed on the base material; and
a surface layer of silver which is formed on a surface of the underlying layer,
wherein the underlying layer has a thickness of 2 μm or less, and an area fraction in {200} orientation of the surface layer is 41.2% or more.

2. A silver-plated product as set forth in claim 1 , wherein said surface layer has a thickness of 10 μm or less.

3. A contact or terminal part which is made of a silver-plated product as set forth in claim 1 or 2 .

Assignees

• Dowa Metaltech Co Ltd

Inventors

• Shinohara Keisuke
• Ogata Masafumi
• Miyazawa Hiroshi
• Sugawara Akira

Classifications

• C25D5/14 Primary

  two or more layers being of nickel or chromium, e.g. duplex or triplex layers · CPC title

• C25D3/12

  of nickel or cobalt · CPC title

• C25D5/34

  Pretreatment of metallic surfaces to be electroplated · CPC title

• C25D7/00 Primary

  Electroplating characterised by the article coated · CPC title

• C25D3/46

  of silver · CPC title