Invention Grant
- Patent Title: Electric contact member
- Patent Title (中): 电接触件
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Application No.: US12895050Application Date: 2010-09-30
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Publication No.: US08410367B2Publication Date: 2013-04-02
- Inventor: Takayuki Hirano , Akashi Yamaguchi , Takashi Miyamoto
- Applicant: Takayuki Hirano , Akashi Yamaguchi , Takashi Miyamoto
- Applicant Address: JP Kobe-shi JP Kobe-shi
- Assignee: Kobe Steel, Ltd.,Kobelco Research Institute, Inc.
- Current Assignee: Kobe Steel, Ltd.,Kobelco Research Institute, Inc.
- Current Assignee Address: JP Kobe-shi JP Kobe-shi
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2009-228057 20090930
- Main IPC: H01B5/00
- IPC: H01B5/00

Abstract:
Provided is an electric contact member which reduces, to the utmost, peel-off of a carbon film that is caused at the time of use of the electric contact member having at least an edge to keep stable electric contact over a long period of time. Disclosed is an electric contact member which repeatedly contacts with a device under test at a tip part of the electric contact member in which the tip part has an edge, the electric contact member comprising: a base material; an underlying layer comprising Au, Au alloy, Pd or Pd alloy, which is formed on a surface of the base material of the tip part; an intermediate layer which is formed on a surface of the underlying layer; and a carbon film comprising at least one of a metal and a carbide thereof which is formed on a surface of the intermediate layer, wherein the intermediate layer has a lamination structure comprising: an inner layer comprising Ni or Ni alloy; and an outer layer comprising at least one of Cr, Cr alloy, W and W alloy.
Public/Granted literature
- US20110214900A1 ELECTRIC CONTACT MEMBER Public/Granted day:2011-09-08
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