Method of preparation of dispersion strengthened silver electrical contacts
 Preparation of compositions of silver and CeO.sub.2 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 CeO.sub.2 substantially improve the electrical contact properties of silver. Silver with dispersed CeO.sub.2 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. 
Engelhard Minerals & Chemicals Corporation
C H
C22C H01H
inventional inventional
James S. Emil L. Walter G. Victor G.
Hill Carbone Keyes Mooradian