HIGH-DENSITY HIGH-CONDUCTIVITY ELECTRICAL CONTACT MATERIAL FOR VACUUM INTERRUPTERS AND METHOD OF MANUFACTURE

摘要

47,604HIGH-DENSITY HIGH-CONDUCTIVITY ELECTRICALCONTACT MATERIAL FOR VACUUM INTERRUPTERSAND METHOD OF MANUFACTUREABSTRACT OF THE DISCLOSUREA vacuum interrupter contact is formed of copperand chromium which exhibits high electrical conductivity anda high density of greater than about 95% of the theoreticaldensity of the materials. The copper is the predominantconstituent, and a mixture of copper and chromium powder iscold-pressed to form a compact which is then vacuum-sinteredat a temperature below the melting point of the copper toachieve the desired high density.