Hydration Contribution to Wide-velocity-range Superlubricity in Acids

doi:10.1016/j.triboint.2025.111478

Hydration Contribution to Wide-velocity-range Superlubricity in Acids

2025-11-27

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张晨辉 (Chenhui Zhang) *

DOI：10.1016/j.triboint.2025.111478

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• The wide-velocity-range (10-2−103 mm/s, >4 orders of magnitude) superlubricity with the lowest friction coefficient of 0.002 was achieved using acid solutions lubricating polymer/ceramic interfaces under applied pressures of 15−40 MPa. • The superlubricity mechanism is attributed to the hydration contribution of hydrated anions adsorbed on positively charged surfaces in the low-speed regime; whereas in the high-speed regime, the hydrodynamic effect dominates. • The hydration superlubricity breaks through the constraints predicted by conventional Stribeck curves.

Hydration Contribution to Wide-velocity-range Superlubricity in Acids

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