Coupled Temperature–Oil/Water Ratio Effects on Tribo-Chemical Reactions and Failure Behavior of Polycrystalline Diamond
Di Xu, Dingshun She, Shaorong Bie, Yujie Guo, Ren Wang, Haibo Liang, Yi Pan
TL;DR
This study examines how temperature and oil-water ratios affect the wear and friction of polycrystalline diamond in drilling tools.
Contribution
The novel contribution is identifying how oil-water ratios and temperature jointly influence tribo-chemical reactions and failure mechanisms in PCD.
Findings
High oil-water ratios increase friction and wear with rising temperature due to thermal stress and poor transfer film formation.
Low oil-water ratios show non-monotonic friction behavior linked to surface passivation and water evaporation effects.
Temperature transitions near 100 °C mark lubrication regime shifts in water-rich drilling fluid environments.
Abstract
Polycrystalline diamond (PCD) compacts are extensively applied in downhole drilling tools owing to their exceptional hardness and wear resistance. However, their tribological performance is strongly influenced by the thermal and chemical characteristics of drilling fluids. In this study, the coupled effects of temperature (25–125 °C) and oil–water ratio on the tribological behavior of PCD were systematically investigated. The results indicate that under relatively high oil–water ratios (50:50, 80:20, and 100:0), both the friction coefficient and wear rate increase monotonically with temperature, which is associated with intensified interfacial thermal stress and suppressed formation of protective carbon-based transfer films. In contrast, at low oil–water ratios (0:100 and 20:80), the friction coefficient exhibits a non-monotonic dependence on temperature, decreasing initially and then…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
Click any figure to enlarge with its caption.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsDrilling and Well Engineering · Diamond and Carbon-based Materials Research · Tunneling and Rock Mechanics