Mitigating iron-induced catalytic wear in monocrystalline diamond tools using two-dimensional (2D) materials

Diamond tools are known to wear rapidly during the machining of ferrous materials because catalytic effect iron on diamond graphitization. This work aims perform a relative comparison mitigation efficacy candidate two-dimensional (2D) materials, viz., graphene oxide (GO), hexagonal boron nitride (hBN), molybdenum disulfide (MoS2) and tungsten (WS2), when used as cutting fluid additives turning steel. The 2D material suspensions (0.15 wt.%) first characterized for their hydrodynamic diameter distributions. Multi-pass studies then conducted using monocrystalline tools. Tool wear, forces surface roughness metrics. Overall, has highest reduction in tool (60 %) over baseline case. It is followed by nitride, that offered 52 %, 45 % 38 reduction, respectively, hBN provides best combination low roughness. can be explained terms specific chemical/physical interactions at iron-diamond interface. X-ray Photo Spectroscopy (XPS) measurements reveal clear correlation between trends strength graphitic carbon/carbide signals obtained machined surfaces. XPS B1s S2p regions shed light chemical reactions responsible performance hBN, WS2 MoS2. unique chemistries resulting surfaces offer potential rich exploration landscape downstream applications.