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Paper Abstract and Keywords
Presentation 2024-12-11 13:50
Wear of carbon brushes containing molybdenum disulfide under high current conditions
Shota Kanazawa, Yuta Kikuchi, Takahiro Ueno, Makoto Takanezawa (NIT) EMD2024-23
Abstract (in Japanese) (See Japanese page) 
(in English) Electric sliding contact mechanisms play an important role in various electrical devices, such as brushes/slip rings (or commutators) in generators and electric motors, trolley wires/pantographs and brushes/current collectors in electric railways. Among these, the market for generators is increasing due to the expansion of electric power facilities worldwide.
In this study, we conducted sliding current tests under high current conditions using a steel slip ring and copper graphite brush with molybdenum disulfide, which are attracting attention as materials for slip rings in turbine generators that are becoming larger and are used in electric railways.
Experiments were conducted at different current densities (0~60 A/cm2),and the wear characteristics were examined based on the contact voltage drop, wear amount, surface temperature, brush/ring roughness, and surface analysis results after the experiment.
The results of the experiment showed that the brushes containing molybdenum disulfide tended to increase brush wear and surface roughness, but they also had the effect of reducing the roughness of the ring surface.
Keyword (in Japanese) (See Japanese page) 
(in English) carbon brush / slip ring / sliding contact / wear / molybdenum disulfide / high current / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 297, EMD2024-23, pp. 11-16, Dec. 2024.
Paper # EMD2024-23 
Date of Issue 2024-12-04 (EMD) 
ISSN Online edition: ISSN 2432-6380
Copyright
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reproduction
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)
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Conference Information
Committee EMD  
Conference Date 2024-12-11 - 2024-12-11 
Place (in Japanese) (See Japanese page) 
Place (in English) JR HAKATA CITY 
Topics (in Japanese) (See Japanese page) 
Topics (in English) IS-EMD2024 
Paper Information
Registration To EMD 
Conference Code 2024-12-EMD 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Wear of carbon brushes containing molybdenum disulfide under high current conditions 
Sub Title (in English)  
Keyword(1) carbon brush  
Keyword(2) slip ring  
Keyword(3) sliding contact  
Keyword(4) wear  
Keyword(5) molybdenum disulfide  
Keyword(6) high current  
Keyword(7)  
Keyword(8)  
1st Author's Name Shota Kanazawa  
1st Author's Affiliation Nippon Institute of Technology (NIT)
2nd Author's Name Yuta Kikuchi  
2nd Author's Affiliation Nippon Institute of Technology (NIT)
3rd Author's Name Takahiro Ueno  
3rd Author's Affiliation Nippon Institute of Technology (NIT)
4th Author's Name Makoto Takanezawa  
4th Author's Affiliation Nippon Institute of Technology (NIT)
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Speaker Author-1 
Date Time 2024-12-11 13:50:00 
Presentation Time 20 minutes 
Registration for EMD 
Paper # EMD2024-23 
Volume (vol) vol.124 
Number (no) no.297 
Page pp.11-16 
#Pages
Date of Issue 2024-12-04 (EMD) 


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