Synthesis of Novel Deep Eutectic Solvents for Ultralow Wear Performance at the Steel/Steel Interface under High Pressure
Deep eutectic solvents (DESs) have attracted widespread attention in the lubrication field, yet achieving effective steel–steel wear resistance remains challenging. This study develops a thiodisuccinic acid/trioctylphosphine oxide-based deep eutectic solvent (DES) with tunable hydrogen-bonding networks for steel/steel interface lubrication. At a 1:4 molar ratio, the DES achieves a friction coefficient of 0.05 and an ultralow wear rate (4.44 × 10–9 mm3·N–1·m–1) under 1.08 GPa contact pressure. Remarkably, the DES exhibits sustained lubricity, maintaining a wear rate of 1.13 × 10–8 mm3·N–1·m–1 after 110,000 cycles. The key lubrication mechanism is attributed to the multihydrogen-bonding network that enhances lubricant film load-carrying capacity and mixed lubrication. This work presents a novel approach for engineering high-performance DESs with exceptional antiwear properties for steel surfaces.
Authors
- Daoai Wang (ORCID: https://orcid.org/0000-0002-3019-282X)
- Liucheng Wang
- Yu Jia (ORCID: https://orcid.org/0000-0001-7810-4916)
- Changhe Du
- Ying Liu (ORCID: https://orcid.org/0000-0001-6970-4469)
- Liqiang Zhang (ORCID: https://orcid.org/0000-0002-5722-8298)
- Xiaojuan Li (ORCID: https://orcid.org/0000-0002-7317-7152)
- Yongliang Gao
- Linxu Fang
Institutions
- Chinese Academy of Sciences (CN)
- Lanzhou Institute of Chemical Physics (CN)
- Division of Materials Science and Engineering (AU)
- Qingdao Center of Resource Chemistry and New Materials (CN)
- Ocean University of China (CN)
Publication Details
- Journal
- ACS Sustainable Chemistry & Engineering
- Published
- 2025-08-18
- DOI
- https://doi.org/10.1021/acssuschemeng.5c05698
- Citations
- 1
- Primary Topic
- Ionic liquids properties and applications
- Type
- article
- Field-Weighted Citation Impact
- 0.39
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Gansu Province
- Natural Science Foundation of Shandong Province
- Science and Technology Department of Gansu Province
- West Light Foundation of the Chinese Academy of Sciences
- Key Technology Research and Development Program of Shandong
- Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences