Nanoscale friction analysis using asperity cross-section and longitudinal section area

This study investigates the effect of nanoscale asperity geometry and indentation depth on friction behaviors. Diamond asperities of cone, cosine, and hemisphere sliding on the copper substrate are analyzed based on asperity cross-section and longitudinal section area. Results show that asperity cross-section area is linear to friction force as the key component. Moreover, wear volume is decided by and linear to asperity longitudinal section area. The simulated results of wear volume present a slope agreement with the classical wear model in the steady phase with a shift at the beginning.

Automated summary

This study investigates the effect of nanoscale asperity geometry and indentation depth on friction behaviors. The diamond asperities of cone, cosine, and hemisphere sliding on the copper substrate were analyzed based on asperity cross-section and longitudinal section area. The results show that asperity cross-section area is linearly related to friction force and plays a key role. In addition, wear volume is determined by and linearly related to asperity longitudinal section area. The simulated results of wear volume exhibit a slope agreement with the classical wear model in the steady phase, with a shift at the beginning.