ELECTRIC CONTACT MATERIAL, ELECTRIC CONTACT MATERIAL MANUFACTURING METHOD, AND TERMINAL

WIPO Patent Application WO/2015/182786

A1

[Problem] To provide an electric contact material in which diffusion of a conductive base material to the outermost layer is limited and elevation of contact resistance is inhibited even in high temperature use. [Solution] The present invention is: an electric contact material (10), which has a conductive base material (1) obtained from copper or a copper alloy, a first intermediate layer (2) provided on the conductive base material (1), a second intermediate layer (3) provided on the first intermediate layer (2), and an outermost layer provided on the second intermediate layer (3) and obtained from tin or a tin alloy, wherein the first intermediate layer (2) is configured from a single level of crystal grains extending from the conductive base material (1) to the second intermediate layer (3) and wherein, in the first intermediate layer (2), the density of grain boundaries (5b) extending in a direction such that the angle formed with respect to the interface between the conductive base material and the first intermediate layer is at least 45° is 4 µm/µm2 or less; a manufacturing method therefor; and a terminal.

OKUNO YOSHIKAZU (JP)
KOBAYASHI YOSHIAKI (JP)
NAKATSUGAWA TATSUYA (JP)
MITOSE KENGO (JP)
TACHIBANA AKIRA (JP)
KAWATA SHINGO (JP)

PCT/JP2015/065819

December 03, 2015

June 01, 2015

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FURUKAWA ELECTRIC CO LTD (JP)
FURUKAWA AUTOMOTIVE SYS INC (JP)

C25D7/00; B21D53/00; C25D5/12; C25D5/50; H01H1/025; H01H1/04

WO2006134665A1

2006-12-21

JP2011063875A	2011-03-31
JP2009108389A	2009-05-21
JP2013036072A	2013-02-21
JP2011252216A	2011-12-15

See also references of EP 3150745A4

IIDA, Toshizo et al. (JP)
Toshizo Iida (JP)

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