Contact Characteristics of New Self-Lubricating Composite Materials (Special Issue on Recent Electromechanical Devices)

概要

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Composite materials of solid lubricants, such as graphite, MoS_2, WS_2, etc., and metals are being used as the sliding electrical contacts. However, few reports have so far been presented on the detailed characteristics of such composite materials. It is shown in this report that contact resistance and coefficient of friction of the sliding contact of the composite material of Cu-Nb system against Cu were higher than those of the sliding contact of the composite material of Cu-Sn system against Cu. It was, further, found that composite materials of Cu-Sn system were superior to those of Cu-Nb system being both contact resistances and coefficients of friction lowered. At the same time, it was found that performances of composite materials of Cu-Sn alloy base containing exclusively WS_2 were superior to those containing both WS_2 and MoS_2. It was, therefore, suggested that proper samples suitable for the service conditions should be selected from the composite materials of Cu-Sn system which contain exclusively WS_2 for the practical applications.
社団法人電子情報通信学会の論文
1994-10-25