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Paper Abstract and Keywords
Presentation 2014-02-21 13:55
Three-dimensional comparisons of damage shapes on Ag and AgSnO2 contact surfaces caused by break arc discharges
Makoto Hasegawa, Daichi Kawamura (Chitose Inst. of Science and Tech.) R2013-86 EMD2013-142 Link to ES Tech. Rep. Archives: EMD2013-142
Abstract (in Japanese) (See Japanese page) 
(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 AgSnO2 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) 
(in English) Optical cross-section method / Electrical contacts / Arc discharge / Material transfer / Eroion / Ag contacts / AgSnO2 contacts /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 438, EMD2013-142, pp. 13-18, Feb. 2014.
Paper # EMD2013-142 
Date of Issue 2014-02-14 (R, EMD) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF R2013-86 EMD2013-142 Link to ES Tech. Rep. Archives: EMD2013-142

Conference Information
Committee EMD R  
Conference Date 2014-02-21 - 2014-02-21 
Place (in Japanese) (See Japanese page) 
Place (in English)  
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Paper Information
Registration To EMD 
Conference Code 2014-02-EMD-R 
Language Japanese 
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 AgSnO2 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) Eroion  
Keyword(6) Ag contacts  
Keyword(7) AgSnO2 contacts  
1st Author's Name Makoto Hasegawa  
1st Author's Affiliation Chitose Institute of Science and Technology (Chitose Inst. of Science and Tech.)
2nd Author's Name Daichi Kawamura  
2nd Author's Affiliation Chitose Institute of Science and Technology (Chitose Inst. of Science and Tech.)
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Date Time 2014-02-21 13:55:00 
Presentation Time 25 minutes 
Registration for EMD 
Paper # R2013-86, EMD2013-142 
Volume (vol) vol.113 
Number (no) no.437(R), no.438(EMD) 
Page pp.13-18 
Date of Issue 2014-02-14 (R, EMD) 

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