Influence of contact surface conditions on discharge phenomena of vacuum reed switches

The relationship between contact surface conditions and discharge phenomena of vacuum reed switches is studied. Switches are examined before and after surface deactivation treatment. Breakdown voltage is increased by the surface deactivation treatment. Work function is also found to be enhanced by the treatment. Rhodium oxide film is produced on the contact surface through the surface deactivation treatment, increasing the work function. This enhancement of work function is thought to be important for obtaining high breakdown voltage between contacts.<
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