Title:
ELECTRIC CONTACT FOR VACUUM VALVE, AND VACUUM INTERRUPTER USING THE SAME
Document Type and Number:
Japanese Patent JP2011108380
Kind Code:
A
Abstract:
To provide an electric contact which has a small welding separation force, excellent electrical conduction performance and interruption performance.
The electrical contact including chrome, copper and tellurium, has a metallographic structure where intermetallics consisting of chrome, copper and tellurium, and chrome are distributed in copper matrix, and is characterized in that the intermetallics exist in the crystal grain and the grain boundary of the copper matrix and in the boundary face between chrome and copper.
Inventors:
KIKUCHI SHIGERU
BABA NOBORU
MORITA AYUMI
YABU MASATO
NAKAMURA KIYOMI
BABA NOBORU
MORITA AYUMI
YABU MASATO
NAKAMURA KIYOMI
Application Number:
JP2009259401A
Publication Date:
June 02, 2011
Filing Date:
November 13, 2009
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H01H33/66; C22C1/04; C22C9/00; H01H1/025; H01H11/04
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda
Yuji Toda