Electrode material for vacuum circuit breaker and method of manufacturing the same
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United States of America Patent
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May 14, 2013
Grant Date -
Aug 25, 2011
app pub date -
Oct 2, 2009
filing date -
Oct 31, 2008
priority date (Note) -
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Abstract
Atomized Cu—Cr alloy powder, 20 to 30 percent by weight of Thermite Cr powder and 5 percent by weight of electrolytic Cu powder are mixed together and undergo solid phase sintering treatment to form an electrode material for vacuum circuit breakers. The gross content of Cr of the electrode material is 30 to 50 percent by weight. In manufacturing the electrode material for vacuum circuit breakers, such powders are mixed together and then undergo compression molding to be formed into a compressed compact. The compressed compact is performed solid phase sintering at a temperature lower than the melting point of Cu in a non-oxidizing atmosphere to prepare a solid phase sintered body.
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