Composite Materials Containing Solid Lubricants as the New Sliding Contact Materials

Yoshitada WATANABE  

IEICE TRANSACTIONS on Electronics   Vol.E82-C    No.1    pp.19-24
Publication Date: 1999/01/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Electromechanical Devices and Their Materials)
laminar solid lubricants,  sliding contacts,  contact resistance,  coefficient of friction,  sliding contact model,  

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The applicability of composite materials containing laminar solid lubricants to sliding contacts was studied. Performances of several composite materials prepared by incorporating solid lubricants with the basic alloys of the Cu-Nb system and Cu-Sn system were investigated to test the suitability of the composite materials as sliding contacts. As a result, it was clarified that the composite materials based on Cu-Sn alloy were superior to those based on Cu-Nb alloy and those containing only WS2 and not MoS2 were more effective in reducing both the contact resistance and the coefficient of friction. Based on the relationship between the contact resistance and the coefficient of friction obtained in this experimental study, the author proposed a new model for electric contact of composite materials.