Title:
ELECTRIC CONTACT AND ITS MANUFACTURE
Document Type and Number:
Japanese Patent JPH10188710
Kind Code:
A
Abstract:
To provide an electric contact suited for use in a breaker for 100A or less rated current.
In this structure, a peripheral layer 2 having 135mHv or more micro Vickers hardness of a contact surface and a central layer 1 less than 135mHv micro Vickers hardness of a section are compounded. The peripheral layer 2 occupies a contact surface region of 32.7% or more 91.0% or less from a contact surface peripheral edge, in an electric contact, the central layer 1 and the peripheral layer 2 are composed of silver alloy 8.0% or more 25.0% or less cadmium(Cd), 1.1% or more 5% or less tin (Sn), 0.07% or more 3% or less nickel(Ni) and 0.2% or less impurity element.
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Inventors:
UENISHI NOBORU
SUZUKI YASUHIKO
TAKADA CHIHIRO
KOBAYASHI AKINORI
SUZUKI YASUHIKO
TAKADA CHIHIRO
KOBAYASHI AKINORI
Application Number:
JP29608897A
Publication Date:
July 21, 1998
Filing Date:
October 29, 1997
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES
International Classes:
B22F7/00; C22C5/10; C23C4/08; C23C8/10; C23C14/14; C23C30/00; H01H1/04; H01H11/04; (IPC1-7): H01H1/04; B22F7/00; C22C5/10; C23C4/08; C23C8/10; C23C14/14; C23C30/00; H01H11/04
Attorney, Agent or Firm:
Tetsuji Ueshiro (2 outside)
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