WS2を含有したCu-Sn系複合材料の高速しゅう動特性

概要

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Three kinds of new composite materials are evaluated. These materials are examined mainly for contact resistance and coefficient of friction in high speed rotations. Composite materials made use of WS2, C, etc. at 40, 50 and 60 (wt%) as lamella solid lubricants for sliding contacts. As a result, as solid lubricant increase, high resistance films were formed. These films showed a tendency to destroy in high speed conditions. It was assumed these high resistance films were affected by the surface roughness of the partner materials. In addition, the contact surface of composite material containing lamella solid lubricants of 40 [wt%] was analyzed using a tapping mode AFM and by finding its surface potential voltage (SPoM). Then, it was shown there were high resistance area parts and low resistance area parts on the sliding scar of the composite material. On the other hand, sliding scar of the composite material containing lamella solid lubricants of 60 [wt%] had very few low resistance areas. Therefore, it was clear that the electric potential distribution of the sliding scars were different depending on the amount of lamella solid lubricants.
2010-10-30