Title:
CONTACT MATERIAL FOR VACUUM VALVE AND MANUFACTURING METHOD OF CONTACT MATERIAL FOR VACUUM VALVE
Document Type and Number:
Japanese Patent JP2019192464
Kind Code:
A
Abstract:
To provide a contact material for a vacuum valve having excellent withstand voltage characteristics, and capable of restraining desorption of a substance for improving arc-proofness, when it is contained, and occurrence of crack due to impact at the time of current interruption, and to provide a manufacturing method of the contact material for a vacuum valve.SOLUTION: A contact material for a vacuum valve is composed of a conductive matrix composed of copper, first particulate arc-proof components of chromium formed in the conductive matrix, second particulate arc-proof components formed in the conductive matrix, and surrounded by the first arc-proof components, and particulate additive components formed in the conductive matrix, and surrounded by the first arc-proof components.SELECTED DRAWING: Figure 1
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Inventors:
KUSANO TAKASHI
YAMAMOTO ATSUSHI
SASAKI HARUKA
SOMEI HIROMICHI
YAMAMOTO ATSUSHI
SASAKI HARUKA
SOMEI HIROMICHI
Application Number:
JP2018083193A
Publication Date:
October 31, 2019
Filing Date:
April 24, 2018
Export Citation:
Assignee:
TOSHIBA CORP
TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORP
TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORP
International Classes:
H01H33/664; H01H11/04; H01H33/662
Domestic Patent References:
| JP2003226904A | 2003-08-15 | |||
| JPH0729446A | 1995-01-31 |
Attorney, Agent or Firm:
Patent Business Corporation Sakura International Patent Office