Paper Title:
The Preparation and Properties of New Silver-Metal Oxide Graded Composite Electrical Contact Materials
  Abstract

Electrical contact material is a very important material for the electric power industry. An electrical contact material should display good structural characteristics (suitable hardness, high thermal conductivity and stabilization) as well as a good functional characteristic (low electrical resistivity). It is difficult to fabricate such a contact material with all these good performing parameters by common techniques because these physical parameters influence each other. In this paper, we report a novel investigation to design and prepare silver-metal oxide composite materials according to functionally layered and graded material (FLGM) concept and meeting requirement as electrical contact material. The silver-based composite samples characterized by layered component were prepared with conventional solid-phase sintering technique. One kind of sample consists of tin dioxide and silver material, in which SnO2 exhibits a graded distribution. Another consists of two metal oxides, cadmium and zinc oxides, and silver material, in which each layer has different metal oxide. Hardness, thermal conductivity and electrical conductivity, were measured and related problems are discussed. Especially, welding resistance as an important parameter for practical application was tested. SEM analyses before and after electrical erosion were also performed. We conclude that the functionally graded material (FGM) concept as a novel designing and fabricating method has potential for electrical contact composite material.

  Info
Periodical
Key Engineering Materials (Volumes 280-283)
Edited by
Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li
Pages
1917-1920
DOI
10.4028/www.scientific.net/KEM.280-283.1917
Citation
Y. Wang, F. Zhang, L.Z. Qi, L. Wang, L.C. Cheng, "The Preparation and Properties of New Silver-Metal Oxide Graded Composite Electrical Contact Materials", Key Engineering Materials, Vols. 280-283, pp. 1917-1920, 2005
Online since
February 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Chang Chun Ge, Zhang Jian Zhou
Abstract:Tungsten has the highest sputtering threshold of all possible candidates and the highest melting point in metal. It will be the first...
1371
Authors: Chang Chun Ge, Xiao Feng Wu, Gui Ying Xu
Abstract:Functionally graded thermoelectric material (TE FGM) is one of main research direction in research field of thermoelectric (TE) materials...
2600
Authors: Ji Gui Cheng, Jin Chuan Zhu, Lei Wan, Hai Gen He
Abstract:WC-Co tapes with different Co contents were prepared by rolling the mixtures of WC-Co powders and polymer binders, and layered WC-Co green...
673
Authors: Jun Li, Xue Yan, C. Xu, L. Zhang, M.W. Li, Xiao Nong Cheng
Abstract:A mathematical model for the Cu/ZrW2O8 functionally graded films was established using a finite element method. The effects of the...
681
Authors: M.S. El-Wazery, A.R. El-Desouky, O.A. Hamed, N.A. Mansour, A.A. Hassan
Chapter 6: Composite Materials
Abstract:The microstructure and mechanical properties of ZrO2/Ni functionally graded materials (FGMs) fabricated by powder metallurgy technique were...
463