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W-Cu composite materials for electrical contacts used in vacuum contactors

V. TSAKIRIS1,* , M. LUNGU1, E. ENESCU1, D. PAVELESCU2, G. DUMITRESCU3, A. RADULIAN3, V. BRAIC4

Affiliation

  1. National Institute for Research and Development in Electrical Engineering ICPE-CA, Splaiul Unirii 313, Bucharest, Romania
  2. POLITEHNICA University of Bucharest, Electrical Engineering Faculty, Splaiul Independentei 313, Bucharest, Romania
  3. Icpe SA, Splaiul Unirii 313, Bucharest, Romania
  4. INOE2000, Romania, Atomistilor 1, Magurele, Ilfov, Romania

Abstract

W-Cu composite materials for electrical contacts to be used in low voltage vacuum contactors were synthesized by means of powder metallurgy (P/M) and infiltration technique. The compacting pressure and sintering temperature were selected in order to achieve the desired skeleton density. Direct infiltration on green compacts of W-Cu-(Ni) was made by using different elements such as Cu and Ag. The influence of chemical composition, nature of infiltrating element and processing parameters on microstructures, and electrical, mechanical and functional properties were emphasized..

Keywords

W-Cu composites, Electrical contacts, Vacuum contactors, Powder metallurgy.

Submitted at: Dec. 3, 2012
Accepted at: Sept. 18, 2013

Citation

V. TSAKIRIS, M. LUNGU, E. ENESCU, D. PAVELESCU, G. DUMITRESCU, A. RADULIAN, V. BRAIC, W-Cu composite materials for electrical contacts used in vacuum contactors, Journal of Optoelectronics and Advanced Materials Vol. 15, Iss. 9-10, pp. 1090-1094 (2013)