J. Swingler et Jw. Mcbride, THE EROSION AND ARC CHARACTERISTICS OF AG CDO AND AG/SNO2 CONTACT MATERIALS UNDER DC BREAK CONDITIONS/, IEEE transactions on components, packaging, and manufacturing technology. Part A, 19(3), 1996, pp. 404-415
Break operation studies have been conducted upon Ag/CdO and Ag/SnO2 co
ntact materials under dc conditions between 1-16 a. The apparatus used
allows contact materials to be continually tested with a controlled b
reak velocity. Results are presented on erosion data in terms of mass
transfer. Surface analysis methods are used, scanning electron microgr
aphs reveal distinct structures and areas on the contact surface, and
elemental analysis (EDS) shows migration of metal species with current
. The metal-oxide used in the contact is shown to influence the are an
d erosion characteristics of break only operations. The Ag/CdO contact
s exhibit loser erosion than Ag/SnO2 contacts under these controlled c
onditions.