Electrical Contacts, Manufacturing Methods Thereof, Electrodes, Vacuum Interrupters, and Electric Power Switches
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United States of America Patent
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Issued Date -
Mar 20, 2014
app pub date -
Aug 22, 2013
filing date -
Sep 14, 2012
priority date (Note) -
Abandoned
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Abstract
Provided an electrical contact is cheap, excellent workability and lasts the effect of chopping current reduction. An electrical contact comprising a Cu matrix, and compounds Cu and low melting point metal which are dispersed in the Cu matrix, wherein a vapor pressure of the low melting point metal is more than 105 Pa at 1000° C., the compound has stoichiometric ratio which is the value of the low melting metal/Cu is greater than 0.5, and a longitudinal direction of the compound is oriented at an angle of 90°±10° to the contact surfaces. The method of the electrical contact is stretching mixture the Cu matrix with the compounds at 70-85% while heating, using as a contact surfaces of the electrical contact.
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