Quarterly Report of RTRI
Online ISSN : 1880-1765
Print ISSN : 0033-9008
ISSN-L : 0033-9008
PAPERS
Wear Mechanism of Current Collecting Materials under the Effect of Flowing Electric Current
Chikara YAMASHITA
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2017 年 58 巻 4 号 p. 264-269

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This paper proposes an electric contact model considering film resistance, such as an oxide layer, and describes a method for analyzing electric potential distribution and temperature distribution around a contact spot. As a result of the analysis, several laws governing the relationship between electric potential and temperature have been found, and a formula to calculate rising temperature was established using a factor calculated from contact resistance and film resistance. Finally, this paper proposes a map quantitatively showing transition conditions between wear modes.

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© 2017 by Railway Technical Research Institute
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