Presentation 2014-02-21
Three-dimensional comparisons of damage shapes on Ag and AgSnO_2 contact surfaces caused by break arc discharges
Makoto Hasegawa, Daichi Kawamura,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Observation and evaluation of changes (damage growth) on contact surfaces caused by arc discharges are important for realizing better understandings of contact phenomena. For that purposes, an evaluation system enabling observation and evaluation of growth processes of a crater and/or a pip (damage shapes) during switching operations has been being constructed. Up to now, evaluation of a movable cathode surface profile by way of an optical cross-section method, as well as observation of the counterpart stationary anode surface by means of a CCD camera, has been realized. For the cathode surfaces, further observations and evaluations of temporal changes in the cathode surface conditions (a crater growth process) during switching operations were tried by drawing three-dimensional images of the movable cathode samples based on data obtained with the optical cross-section method. In this paper, Ag contact pairs and AgSnO_2 contact pairs were operated to break a DC14V-2A or 3A load current in an inductive circuit, and damage shapes on their contact surfaces were three-dimensionally evaluated and compared with each other by those evaluation schemes as well as measurement of numerical data based on microscope evaluation.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Optical cross-section method / Electrical contacts / Arc discharge / Material transfer / Erosion
Paper # R2013-86,EMD2013-142
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Conference Information
Committee EMD
Conference Date 2014/2/14(1days)
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Registration To Electromechanical Devices (EMD)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Three-dimensional comparisons of damage shapes on Ag and AgSnO_2 contact surfaces caused by break arc discharges
Sub Title (in English)
Keyword(1) Optical cross-section method
Keyword(2) Electrical contacts
Keyword(3) Arc discharge
Keyword(4) Material transfer
Keyword(5) Erosion
1st Author's Name Makoto Hasegawa
1st Author's Affiliation Chitose Institute of Science and Technology()
2nd Author's Name Daichi Kawamura
2nd Author's Affiliation Chitose Institute of Science and Technology
Date 2014-02-21
Paper # R2013-86,EMD2013-142
Volume (vol) vol.113
Number (no) 438
Page pp.pp.-
#Pages 6
Date of Issue