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<p class="noindent">State-based peridynamics theory was used to study the nanoscale friction and wear behavior of thin films of amorphous carbon used as protective overcoats in hard-disk drives. Numerical results of the coefficient of friction and wear depth are shown to be in good agreement with published experimental results. Although long-range forces are not considered in the analysis, the results indicate that the present approach yields fairly accurate estimates of the coefficient of friction and wear depth for films of thickness larger than 10 nm and a grid size of 1.6 nm. The results of this study demonstrate that peridynamics theory can be used to analyze various nanoscale friction and wear phenomena without being limited by the excessive computational time and convergence difficulties encountered with traditional numerical techniques, such as the finite element method. </p>

Peridynamics analysis of the nanoscale friction and wear properties of amorphous carbon thin films