Nanomolybdenum disulfide additive improves the tribological behavior of cobalt removal polycrystalline diamond compact

Effect of different base oils on the friction behaviour of polycrystalline diamond compact

“…Before, in the research work on the friction and wear properties of PDC in the relevant literature, it was found that there were wear debris, pulled up diamond particles, transfer film and other substances on the surface of PDC after PDC and Si 3 N 4 ball grinding. 6 In this study, PDC/Si 3 N 4 also has wear debris and pulled diamond particles on the wear surface of PDC under different base oils. It can be seen from Figure 5 that PDC has been graphitized.…”

“…In the previous work, Raman spectroscopy analysis was performed on PDC without friction experiments. 6 The findings revealed the presence of a solitary peak in the Raman spectrum of PDC without friction and wear, positioned at approximately 1330 cm À1 , corresponding to the sp3 bond diamond structure. However, after conducting friction experiments under three distinct base oils, the Raman spectra exhibited multiple peaks, indicating the transformation of carbon atoms from sp3 bond to sp2 bond during the friction experiment due to graphitization of PDC.…”

“…40,41 Base oil can reduce the friction and wear phenomena during the running-in stage. To further determine the friction and lubrication mechanism of PDC under different base oils, the minimum film thickness formula 6 is used to explain. The Dowson-Hamrock minimum film thickness formula is shown as follows.…”

“…Due to its exceptional thermal stability, hardness, strength, impact toughness, friction reduction and wear resistance, PDC serves as an outstanding material for wear-resistant tools and cutting tools. [5][6][7] Its versatility and effectiveness have made it widely utilised in various industries.…”

“…Polycrystalline diamond compact (PDC) is typically produced by sintering diamond powder and cemented carbide under high temperature and high pressure, using cobalt as a binder. Due to its exceptional thermal stability, hardness, strength, impact toughness, friction reduction and wear resistance, PDC serves as an outstanding material for wear‐resistant tools and cutting tools 5–7 . Its versatility and effectiveness have made it widely utilised in various industries.…”