Invention Grant
US3663775A Vacuum interrupter with contacts containing a minor percentage of aluminum 失效
具有少量铝的接触器的真空中断器

Vacuum interrupter with contacts containing a minor percentage of aluminum
Abstract:
Discloses a vacuum-type electric circuit interrupter having its contacts formed of a porous refractory metal matrix and an alloy filling the pores of the matrix consisting essentially of copper, aluminum, and bismuth. In the alloy, the aluminum is present in a quantity of between 9 and 15 percent by weight of copperaluminum, and the bismuth is present in a quantity of less than 5 percent by weight of the total alloy.
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