Publicou 4 edições por ano
ISSN Imprimir: 1093-3611
ISSN On-line: 1940-4360
Indexed in
EXPERIMENTAL OBSERVATION OF THE INTERACTION BETWEEN A MICROSCOPIC CATHODE TIP AND ELECTRICAL ARC
RESUMO
Many theories and hypotheses consider that the properties of the electrical arc are the consequence of the processes near the cathode (cathode zone). This zone represents the interaction of the electrical arc with the cathode surface. At the surface, the continuity of the current is managed by the current emissive site (cathodic spot).
On macroscopic and mesoscopic scales, theories and experimental observations deal with the erosion of the cathodic surface. Under micrometer range, there are only theories describing the erosion of the surface by the arc root. At this scale the work presented here propose an original method to evaluate the arc-cathode interaction. By using the nanotechnology's method of deposition, the roughness of the electrode surface is controlled and the location of the unique microscopic dip is designed. After discharge, the influence of the cathodic tip in the cathodic erosion process is estimated.
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De Fonseca B., Rossignol J., Bourillot E., Teste P., Contribution of Nanotechnologies on the Study of the Physical Phenomena of the Arc Birth, 2010 Proceedings of the 56th IEEE Holm Conference on Electrical Contacts, 2010. Crossref