Title:
TERMINAL MATERIAL FOR CONNECTORS AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2018/135482
Kind Code:
A1
Abstract:
[Problem] To provide a terminal material for connectors having excellent insertion/removal properties, which is decreased in the coefficient of kinetic friction to as low as 0.3 or less, while exhibiting excellent electrical connection characteristics. [Solution] A terminal material for connectors, which is obtained by sequentially laminating, on a substrate that is formed of copper or a copper alloy, a nickel or nickel alloy layer, a copper tin alloy layer and a tin layer in this order, and wherein: the tin layer has an average thickness of from 0.2 μm to 1.2 μm (inclusive); the copper tin alloy layer is a compound alloy layer that is mainly composed of Cu6Sn5, with some of the copper in the Cu6Sn5 being substituted by nickel, and has an average crystal grain diameter of from 0.2 μm to 1.5 μm (inclusive); a part of the copper tin alloy layer is exposed from the surface of the tin layer, with the exposure area ratio being from 1% to 60% (inclusive); the nickel or nickel alloy layer has an average thickness of from 0.05 μm to 1.0 μm (inclusive) and an average crystal grain diameter of from 0.01 μm to 0.5 μm (inclusive), with the (standard deviation)/(average crystal grain diameter) ratio of the crystal grain diameters being 1.0 or less; the surface roughness Ra of a surface of the nickel or nickel alloy layer, said surface being in contact with the copper tin alloy layer, is from 0.005 μm to 0.5 μm (inclusive); and the coefficient of kinetic friction of the surface is 0.3 or less.
Inventors:
INOUE YUKI (JP)
MAKI KAZUNARI (JP)
FUNAKI SHINICHI (JP)
TAMAGAWA TAKASHI (JP)
NAKAYA KIYOTAKA (JP)
MAKI KAZUNARI (JP)
FUNAKI SHINICHI (JP)
TAMAGAWA TAKASHI (JP)
NAKAYA KIYOTAKA (JP)
Application Number:
PCT/JP2018/000996
Publication Date:
July 26, 2018
Filing Date:
January 16, 2018
Export Citation:
Assignee:
MITSUBISHI SHINDO KK (JP)
MITSUBISHI MATERIALS CORP (JP)
MITSUBISHI MATERIALS CORP (JP)
International Classes:
C25D7/00; C25D5/12; C25D5/50; H01R13/03; H01R43/16
Foreign References:
| JP2015063750A | 2015-04-09 | |||
| JP2016056424A | 2016-04-21 | |||
| JP2017006184A | 2017-01-12 | |||
| JP2007100220A | 2007-04-19 | |||
| JP2014240520A | 2014-12-25 | |||
| JP2016056424A | 2016-04-21 |
Other References:
See also references of EP 3572558A4
Attorney, Agent or Firm:
AOYAMA, Masakazu (JP)
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