2108 複素インピーダンス解析を利用した境界膜の膜厚と被覆率の同時計測法(OS2-2 トライボロジーとその応用(2))

概要

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A new technique has been developed for investigating into the physical properties of loaded boundary films between metal surfaces, in which mercury is used as a counter surface of a steel surface for minimizing the effects of the individually different topographies of solid surfaces. An oil film is loaded by squeezing the steel surface into mercury, and the time evolutions of film thickness and coverage are obtained simultaneously by the complex impedance analysis with an equivalent electrical circuit. The loaded film of hexadecane is drained down to a thickness about 2nm with decreasing coverage from unity to zero, in which a dependent relationship is found between film thickness and coverage. The addition of 0.01 wt% palmitic acid into hexadecane forms an explicit residual film with a thickness about a few micrometers and a coverage of unity, which has an ability to support a mean pressure about 0.1kPa without any hydrodynamic effects.
一般社団法人日本機械学会の論文
2006-05-28