Title:
SILVER COATED COMPOSITE MATERIAL FOR MOVABLE CONTACT AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2007/119522
Kind Code:
A1
Abstract:
Disclosed is a silver coated composite material for movable contacts, which comprises
a base composed of an alloy mainly containing iron or nickel, a foundation layer
which is formed on at least a part of the surface of the base and composed of any one
of nickel, cobalt, an nickel alloy and a cobalt alloy, an intermediate layer which
is formed on the foundation layer and composed of copper or an copper alloy, and
an outermost layer which is formed on the intermediate layer and composed of silver
or an silver alloy. In this silver coated composite material, the total amount
of copper contained in the foundation layer, the intermediate layer and the outermost
layer serving as a coating layer as a whole is not more than 0.025 mol per 1 m2
of the coated area.
Inventors:
TANAKA HITOSHI (JP)
TOKUHARA NAOFUMI (JP)
TOKUHARA NAOFUMI (JP)
Application Number:
PCT/JP2007/056364
Publication Date:
October 25, 2007
Filing Date:
March 27, 2007
Export Citation:
Assignee:
FURUKAWA ELECTRIC CO LTD (JP)
TANAKA HITOSHI (JP)
TOKUHARA NAOFUMI (JP)
TANAKA HITOSHI (JP)
TOKUHARA NAOFUMI (JP)
International Classes:
H01H1/04; C25D5/12; C25D7/00; H01H11/04
Foreign References:
| JP2005133169A | 2005-05-26 | |||
| JPS5438558A | 1979-03-23 | |||
| JP2005002400A | 2005-01-06 |
Attorney, Agent or Firm:
MATSUSHITA, Makoto (2-5-19 Shinyokohama, Kohoku-k, Yokohama-shi Kanagawa 33, JP)
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