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Comparison of properties of silver-metal oxide electrical contact materials

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2012
991.pdf (6.460Mb)
Authors
Ćosović, Vladan
Talijan, Nadežda M.
Živković, Dragana
Minic, D.
Zivkovic, Z.
Article (Published version)
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Abstract
Changes in physical properties such as density, porosity, hardness and electrical conductivity of the Ag-SnO2 and Ag-SnO2In2O3 electrical contact materials induced by introduction of metal oxide nanoparticles were investigated. Properties of the obtained silver- metal oxide nanoparticle composites are discussed and presented in comparison to their counterparts with the micro metal oxide particles as well as comparable Ag-SnO2WO3 and Ag-ZnO contact materials. Studied silver-metal oxide composites were produced by powder metallurgy method from very fine pure silver and micro- and nanoparticle metal oxide powders. Very uniform microstructures were obtained for all investigated composites and they exhibited physical properties that are comparable with relevant properties of equivalent commercial silver based electrical contact materials. Both Ag-SnO2 and Ag-SnO2 and Ag-SnO2In2O3 composites with metal oxide nanoparticles were found to have lower porosity, higher density and hardness than th...eir respective counterparts which can be attributed to better dispersion hardening i.e. higher degree of dispersion of metal oxide in silver matrix.

Keywords:
silver based electrical contacts / metal oxide nanoparticles / powder metallurgy / physical properties
Source:
Journal of Mining and Metallurgy B: Metallurgy, 2012, 48, 1, 131-141
Publisher:
  • Technical Faculty, Bor
Projects:
  • Advanced multicomponent metal systems and nanostructured materials with diverse functional properties (RS-172037)

DOI: 10.2298/JMMB111101013C

ISSN: 1450-5339

WoS: 000300798900014

Scopus: 2-s2.0-84855799967
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URI
http://cer.ihtm.bg.ac.rs/handle/123456789/993
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