Invention Grant
- Patent Title: Electrically conductive material for connection component
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Application No.: US16064724Application Date: 2016-06-21
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Publication No.: US10597792B2Publication Date: 2020-03-24
- Inventor: Masahiro Tsuru , Shinya Katsura
- Applicant: Kobe Steel, Ltd.
- Applicant Address: JP Kobe-shi
- Assignee: Kobe Steel, Ltd.
- Current Assignee: Kobe Steel, Ltd.
- Current Assignee Address: JP Kobe-shi
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2015-252617 20151224
- International Application: PCT/JP2016/088071 WO 20160621
- International Announcement: WO2017/110859 WO 20170629
- Main IPC: B32B15/01
- IPC: B32B15/01 ; C25D3/30 ; C25D3/58 ; C25D5/12 ; C25D7/00 ; H01R13/03 ; C25D5/50

Abstract:
An electrically conductive material for a connection component that includes a Cu—Sn alloy coating layer in which a Cu content is 55 to 70 atomic % and has an average thickness of 0.1 to 3.0 μm, and a Sn coating layer having an average thickness of 0.2 to 5.0 μm, which are formed in this order on a surface of a base material made of a copper or copper alloy sheet strip. When a reflected electron image of a material surface is observed with a scanning electron microscope at a magnification of 100 times, a region A and a region B having a higher brightness than the region A and in which the Cu—Sn alloy coating layer is not exposed coexist on the material surface, and an area ratio of the region A on the material surface is 2 to 65%. Further, when the region A is observed with the scanning electron microscope at a magnification of 10,000 times, a region C covered with the Sn coating layer and a region D not covered with the Sn coating layer coexist in the region A, and the area ratio of the region C in the region A is 20 to 70%.
Public/Granted literature
- US20180371633A1 ELECTRICALLY CONDUCTIVE MATERIAL FOR CONNECTION COMPONENT Public/Granted day:2018-12-27
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