Graphene oxide colloidal suspensions mitigate carbon diffusion during diamond turning of steel

Mitigation of chemical wear by graphene platelets during diamond cutting of steel

“…This force field is then used to simulate nanometric diamond cutting of steel in the presence of graphene platelets. The tool wear trends predicted by the simulations are comparable to the findings of Smith et al [13].The graphene platelets are seen to serve as a physical barrier, protecting the tool cutting edge, and also as a sacrificial source for carbon transfer into the workpiece. Other mechanisms, such as platelet cleaving and interlayer sliding, are also observed.…”

“…This section briefly reviews the key findings from the experimental study of Smith et al [13], where graphene platelets were introduced into the workzone during the diamond cutting of low-carbon steel. Table 1 provides a summary of the micro-scale cutting conditions and tool geometry used for their experiments.…”

“…Section 5 compares the simulation findings to the experimental results of Smith et al [13] and also presents a discussion on the wear mitigation mechanisms. Finally, Section 6 summarizes the specific findings of this paper.…”

“…However, all these methods require expensive modifications to the process. Recently, the work of Smith et al [13] has shown that the use of cutting fluids laden with graphene platelets provides a more economical solution to the problem. Their experimental results showed that the introduction of graphene platelets into the cutting zone resulted in a ~30% reduction in diamond tool wear during the machining of low-carbon steels.…”

“…The remainder of this paper is organized as follows: Section 2 provides a summary of the Smith et al [13] experimental results that demonstrated the efficacy of using graphene platelets to mitigate tool wear during diamond cutting of steel. Section 3 provides the rationale behind the choice of the interatomic force field and discusses the results from the calibration tests for the same.…”