Migration of Composite Contact Materials Components at High Current Arcing

Eugeniusz WALCZUK
Piotr BORKOWSKI
Krystyna FRYDMAN
Danuta WOJCIK-GRZYBEK
Witold BUCHOLC
Makoto HASEGAWA

Publication
IEICE TRANSACTIONS on Electronics   Vol.E90-C    No.7    pp.1377-1384
Publication Date: 2007/07/01
Online ISSN: 1745-1353
DOI: 10.1093/ietele/e90-c.7.1377
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electromechanical Devices (Selected Papers from ICEC2006))
Category: Arc Discharge & Related Phenomena
Keyword: 
electrical contacts,  contact materials,  arc erosion,  material migration,  

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Summary: 
The paper presents a method for testing transport of composite contacts materials under electrical arc conditions at high currents and for polarized electrodes. Tests and the discussion of results were carried out for silver-metal, silver-metal oxide and silver-tungsten carbide contact materials. Additionally, tungsten electrode was used as the second contact which was either cathode or anode. Spectrometric analysis of arc erosion components transported onto the second electrode and into the surroundings was carried out.