Method of producing powder ceramet cu-cd/cdo for electric contacts. RU patent 2401314.

FIELD: metallurgy.

SUBSTANCE: mix material is prepared containing powders of copper and cadmium with the solution of thermally unstable cadmium salt. Said mix is dried and thermally treated at 300-500°C. Produced burden is subjected to cold briquetting and sintering. Then second compaction and annealing are performed to produce Cu-Cd/CdO.

EFFECT: lower wear in current switching, lower junction resistance on operated contacts and higher hardness.

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IPC classes for russian patent Method of producing powder ceramet cu-cd/cdo for electric contacts. RU patent 2401314. (RU 2401314):

H01H1/025 - Electric switches

C22C9 - Alloys based on copper

C22C1/05 - ALLOYS (treatment of alloys C21D, C22F)

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