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

Y Zhang and YY Sun and SJ Wu, MATERIALS TODAY COMMUNICATIONS, 37, 107576 (2023).

DOI: 10.1016/j.mtcomm.2023.107576

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.

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