Patent ID: 7132172
Filing Date: 2006-11-07
Classification: B22F,C22C,C23C,H01H,Y10T

Abstract:
1. An electrically conductive composite material used in the manufacture of electrical contact components, said composite material consisting of a metal strip, a contact layer and an intermediate layer provided between the metal strip and the contact layer, the contact layer being made of a silver or tin contact material which contains 0.5 to 60 wt. % carbon powder in the form of fine particles having a diameter ø 1 of 5 to 200 nm as a first additive and 0.5 to 60 wt. % of a second powdery additive in the form of fine particles having a diameter ø 2 of 5 to 200 nm for improving electrical conductivity, hardness and abrasion resistance, and the intermediate layer has a thickness D 3 of 0.1 to 1 μm and is made of Ag or Sn.