METHOD OF PREPARATION OF DISPERSION STRENGTHENED SILVER ELECTRICAL CONTACTS

摘要

Preparation of compositions of silver and CeO2 by powder metallurgy techniques overcomes problems inherent in melting silver and pure cerium and subsequently internally oxidizing the cerium in the mixture. Small concentrations of CeO2 substantially improve the electrical contact properties of silver. Silver with dispersed CeO2 is superior to silver alone for use as an electrical contact because of much greater resistance to arc erosion and welding and only slightly higher contact resistance.