Title:
CONDUCTIVE MEMBER AND METHOD FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2010/084532
Kind Code:
A1
Abstract:
Disclosed is a conductive member having a stable contact resistance, which is hardly separated and requires a small inserting/drawing force when used as a connector.
The conductive member is characterized in that a Cu-Sn intermetallic compound layer (3) and an Sn surface layer (4) are formed in this order on the surface of a Cu substrate (1) through an Ni base layer (2); the Cu-Sn intermetallic compound layer (3) is composed of a Cu3Sn layer (5) arranged on the Ni base layer (2) and a Cu6Sn5 layer (6) arranged on the Cu3Sn layer (5); the Cu-Sn intermetallic compound layer (3) obtained by bonding the Cu3Sn layer (5) and the Cu6Sn5 layer (6) is provided with recesses and projections in the surface which is in contact with the Sn surface layer (4); thicknesses X at the recessed portions (7) are set to 0.05-1.5 μm; the area coverage of the Cu3Sn layer (5) relative to the Ni base layer (2) is not less than 60%; the ratio of the thicknesses Y at the projected portions (8) to the thicknesses at the recessed portions (7) in the Cu-Sn intermetallic compound layer (3) is 1.2-5; and the average thickness of the Cu3Sn layer (5) is 0.01-0.5 μm.
Inventors:
SAKURAI, Takeshi (Ltd. Wakamatsu Plant 128-7, Ohgi-Machi, Aizuwakamatsu-sh, Fukushima 22, 〒9658522, JP)
櫻井健 (〒22 福島県会津若松市扇町１２８－７三菱伸銅株式会社 若松製作所内 Fukushima, 〒9658522, JP)
ISHIKAWA, Seiichi (Ltd. Wakamatsu Plant 128-7, Ohgi-Machi, Aizuwakamatsu-sh, Fukushima 22, 〒9658522, JP)
石川誠一 (〒22 福島県会津若松市扇町１２８－７三菱伸銅株式会社 若松製作所内 Fukushima, 〒9658522, JP)
櫻井健 (〒22 福島県会津若松市扇町１２８－７三菱伸銅株式会社 若松製作所内 Fukushima, 〒9658522, JP)
ISHIKAWA, Seiichi (Ltd. Wakamatsu Plant 128-7, Ohgi-Machi, Aizuwakamatsu-sh, Fukushima 22, 〒9658522, JP)
石川誠一 (〒22 福島県会津若松市扇町１２８－７三菱伸銅株式会社 若松製作所内 Fukushima, 〒9658522, JP)
Application Number:
JP2009/003219
Publication Date:
July 29, 2010
Filing Date:
July 09, 2009
Export Citation:
Assignee:
MITSUBISHI SHINDOH CO., LTD. (4-7-35, Kitashinagawa Shinagawa-k, Tokyo 50, 〒1408550, JP)
三菱伸銅株式会社 (〒50 東京都品川区北品川４－７－３５ Tokyo, 〒1408550, JP)
SAKURAI, Takeshi (Ltd. Wakamatsu Plant 128-7, Ohgi-Machi, Aizuwakamatsu-sh, Fukushima 22, 〒9658522, JP)
櫻井健 (〒22 福島県会津若松市扇町１２８－７三菱伸銅株式会社 若松製作所内 Fukushima, 〒9658522, JP)
ISHIKAWA, Seiichi (Ltd. Wakamatsu Plant 128-7, Ohgi-Machi, Aizuwakamatsu-sh, Fukushima 22, 〒9658522, JP)
三菱伸銅株式会社 (〒50 東京都品川区北品川４－７－３５ Tokyo, 〒1408550, JP)
SAKURAI, Takeshi (Ltd. Wakamatsu Plant 128-7, Ohgi-Machi, Aizuwakamatsu-sh, Fukushima 22, 〒9658522, JP)
櫻井健 (〒22 福島県会津若松市扇町１２８－７三菱伸銅株式会社 若松製作所内 Fukushima, 〒9658522, JP)
ISHIKAWA, Seiichi (Ltd. Wakamatsu Plant 128-7, Ohgi-Machi, Aizuwakamatsu-sh, Fukushima 22, 〒9658522, JP)
International Classes:
C25D7/00; C25D5/12; C25D5/50; H01R13/03
Attorney, Agent or Firm:
AOYAMA, Masakazu (Seiyo Patent Office, 701Akiba Bldg.,3-3,Akihabara, Taitou-k, Tokyo 06, 〒1100006, JP)
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