Presentation 1994/6/17
Tribology of electric contacts
Akio Kohno,
PDF Download Page PDF download Page Link
Abstract(in Japanese) (See Japanese page)
Abstract(in English) Effects of electric current on wear of materials used for current collector of electric locomotives and overheadline have been measured with pin-drum type wear test machine. The results have shown that a discharge current flowing through an air gap between the two specimens,formed at the moment when the specimens were separated by mechanical vibrations,has great influence on wear coefficients. Approximately,an increase of wear coefficients over mechanical wear is proportional to the discharge current. On the contrary,an influence of an electric current between contact specimens is very small so that the change of wear coefticients by the collected current could not been observed on condition that the maximum current is 9.4 A. Some important problems remain unsolved such as why and how frequently the discharge occurs.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Wear / discontact are / air gap / fretting wear / contact resistance
Paper # EMD94-17
Date of Issue

Conference Information
Committee EMD
Conference Date 1994/6/17(1days)
Place (in Japanese) (See Japanese page)
Place (in English)
Topics (in Japanese) (See Japanese page)
Topics (in English)
Vice Chair

Paper Information
Registration To Electromechanical Devices (EMD)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Tribology of electric contacts
Sub Title (in English)
Keyword(1) Wear
Keyword(2) discontact are
Keyword(3) air gap
Keyword(4) fretting wear
Keyword(5) contact resistance
1st Author's Name Akio Kohno
1st Author's Affiliation The Institute of Physical and Chemical Research()
Date 1994/6/17
Paper # EMD94-17
Volume (vol) vol.94
Number (no) 99
Page pp.pp.-
#Pages 8
Date of Issue