High-density high-conductivity electrical contact material...

Details High-density high-conductivity electrical contact material... High-density high-conductivity electrical contact material...

H - Electricity

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H01H 33/66 (2006.01) C22C 1/04 (2006.01) H01H 1/02 (2006.01)

Patent

CA 1118823

47,604 HIGH-DENSITY HIGH-CONDUCTIVITY ELECTRICAL CONTACT MATERIAL FOR VACUUM INTERRUPTERS AND METHOD OF MANUFACTURE ABSTRACT OF THE DISCLOSURE A vacuum interrupter contact is formed of copper and chromium which exhibits high electrical conductivity and a high density of greater than about 95% of the theoretical density of the materials. The copper is the predominant constituent, and a mixture of copper and chromium powder is cold-pressed to form a compact which is then vacuum-sintered at a temperature below the melting point of the copper to achieve the desired high density.

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