Title:
SPIRAL CONTACT AND PROCESS FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2007/052438
Kind Code:
A1
Abstract:
A process for producing spiral contact (7) that even in an environment of high temperature,
exhibits a low permanent set in fatigue and ensures fair spring characteristics,
excelling in electrical conductivity. Ni is used as a core metal of spiral contact
(7). Dissimilar metal (7b,7b’) deposited on the surface of the core metal,
Cu substrate (1) and the core metal in the state of being in contact with each other
are heated so as to induce diffusion infiltration of atoms of the dissimilar metal
(7b,7b’) and Cu atoms of the Cu substrate (1) into a surface layer of the
core metal, thereby forming alloys (7c,7d). Ti or Al is used as the dissimilar
metal (7b,7b’) deposited on the surface of the core metal. With respect
to the heating temperature, the lower limit thereof is the temperature corresponding
to 0.4 time the absolute temperature of melting point of metal with highest melting
point among the core metal and dissimilar metal (7b,7b’) disposed in
contact with each other while the upper limit thereof is the absolute temperature
of melting point of metal with lowest melting point thereamong. Alternatively,
Cu is used as the core metal, and a barrier material of Ni is interposed between
the core metal and the Cu substrate (1).
Inventors:
HIRAI YUKIHIRO (JP)
Application Number:
PCT/JP2006/320064
Publication Date:
May 10, 2007
Filing Date:
October 06, 2006
Export Citation:
Assignee:
ADVANCED SYSTEMS JAPAN INC (JP)
HIRAI YUKIHIRO (JP)
HIRAI YUKIHIRO (JP)
International Classes:
H01R43/16; C23C10/28; C23C28/02; C25D1/00; H01R13/03; H01R13/24; H01R33/76
Foreign References:
JP2005032708A | 2005-02-03 | |||
JPS60105259A | 1985-06-10 | |||
JPS61183426A | 1986-08-16 | |||
JPH1081927A | 1998-03-31 | |||
JPS6217169A | 1987-01-26 | |||
JP2004179055A | 2004-06-24 | |||
JP2004179055A | 2004-06-24 |
Other References:
See also references of EP 1950851A4
Attorney, Agent or Firm:
ISONO, Michizo (Sabo Kaikan Annex 7-4 Hirakawa-cho 2-chome, Chiyoda-k, Tokyo 93, JP)
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