Wear mode control under electric current flow by combining current collecting materials

Chikara Yamashita, Koshi Adachi

Research output: Contribution to journalArticle

Abstract

Wear resistance is required for current collecting materials such as a contact wire and pantograph contact strip because lives of these materials are determined mainly by wear. Conventionally, contact wire and contact strip have been developed independently each other, and there is no concept to reduce wear of them by combining material properties. In this paper, the authors suggest a map which shows tendency of respective wear mode occurrence against any material combination by using a melting point and an electric resistivity. Based on the map, the authors select the wear specimens as nickel for imitation contact wire and iron-based sintered alloy for contact strip so that a melting wear mode of contact wire would not be occurred. As the result of wear test, the melting wear mode and large wear rate of contact wire could not be observed in any load condition as expected. Finally, the authors indicated the possibility of wear mode control for wear reduction measure by combining current collecting materials.

Original languageEnglish
Pages (from-to)137-143
Number of pages7
JournalToraibarojisuto/Journal of Japanese Society of Tribologists
Volume62
Issue number2
Publication statusPublished - 2017

Keywords

  • Contact boundary coefficient
  • Current collecting material
  • Material combination map
  • Melting point
  • Wear mode control
  • Wear mode map
  • Wear test

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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