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公开(公告)号：US3821505A
公开(公告)日：1974-06-28
申请号：US36106373
申请日：1973-05-17
发明人： WOOD A
CPC分类号： H01H1/0203
摘要： A vacuum interrupter having two contacts with co-operating contact-making parts each of which is constituted by a porous matrix of metal particles comprising chromium containing from 0.5 percent to 13.5 percent by weight carbon, or iron containing from 1.0 percent to 2.0 percent by weight carbon, metallurgically bonded together by compacting and heating under high vacuum, the interstices of the matrix being infiltrated under high vacuum with a metal which comprises copper or a copper alloy, and the infiltrated metal constituting between 10 percent and 40 percent of the volume of the infiltrated matrix. When the matrix metal is chromium the preferred range of the carbon content is 1 percent to 3 percent by weight of the matrix metal.
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