Frictional Properties of a Surface Covered With Soft Metal Film (Interference Effect of Soft Metal Film Deformation Between Two Protuberances)

[+] Author and Article Information
Shinobu Kato

Department of Electronic-Mechanical Engineering, Nagoya University, Nagoya 464, Japan

Etsuo Marui

Department of Precision Engineering, Gifu University, Gifu-shi 501-11, Japan

Kiyoo Tachi

Department of Mechanical Engineering, Toyama National Technical College, Hongo-cho, Toyama-shi 930, Japan

J. Tribol 107(4), 444-451 (Oct 01, 1985) (8 pages) doi:10.1115/1.3261107 History: Received April 01, 1984; Online October 29, 2009


The frictional characteristic is examined with reference to a model considering the interference effect of plastic flow (deformation) in soft metal film, when a two-protuberance indentor is slid on a surface covered by electroplated soft metal film. The result is compared with that of a single-protuberance indentor. The coefficient of friction in a two-protuberance indentor, where the interference effect exists, is lower than in a single-protuberance indentor, where the interference effect does not. This fact can well be explained with the configuration of plastic flow line on protuberances described by deforming soft metal film, and the corresponding contact pressure distribution between protuberances and a surface.

Copyright © 1985 by ASME
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