Presentation 1998/10/16
Observation of surface damages of conntact members made by steel carrying electric currents, after separation of them
Akio Kohno,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) If contact members made by steel carrying electric currents wer separated just before separation, the contac resistance and joule heat increase to melt down real contact area between them. Because of the existence of melting bridge betweenh then, electric currents are still flowing in them after geometric separation (boundary contact). After separation, surface damages of them were observed by laser microscope. If supplied voltage was low enough and arc discharge does not occure between them, the damage of anode and cathode were completely unsymmetrical. An hole was digged on the anode, but an pole was constructed on the cathode. If arc discharge occurred between them, the damage of anode and kathode are almost same. Same size holes were digged on them.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) contact / separation / boundary contact / arc discharge / laser microscope
Paper # EMD98-66
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Conference Information
Committee EMD
Conference Date 1998/10/16(1days)
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Paper Information
Registration To Electromechanical Devices (EMD)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Observation of surface damages of conntact members made by steel carrying electric currents, after separation of them
Sub Title (in English)
Keyword(1) contact
Keyword(2) separation
Keyword(3) boundary contact
Keyword(4) arc discharge
Keyword(5) laser microscope
1st Author's Name Akio Kohno
1st Author's Affiliation The institute of Physical and Chemical Research (RIKEN)()
Date 1998/10/16
Paper # EMD98-66
Volume (vol) vol.98
Number (no) 337
Page pp.pp.-
#Pages 4
Date of Issue