首页|Superlubricity and running-in wear maps of water-lubricated dissimilar ceramics

Superlubricity and running-in wear maps of water-lubricated dissimilar ceramics

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  • NSTL
  • Elsevier
Water-lubricated ceramic sliding tribosystems, when operating under superlubricity conditions, reduce frictional energy losses in many applications. Aqueous superlubricity of 5 dissimilar ceramic tribopairs (Si_3N_4-Al_2O_3, Si_3N_4-ZTA, Si_3N_4-SiC, Al_2O_3-SiC, ZrO_2-SiC) was thus studied in a series of ball-on-disk tests, with the identification of wear mechanisms and lubrication regimes, while introducing a running-in wear map approach to elucidate transient tribological phenomena. All pairs presented superlubricity for certain combinations of normal load and sliding speed, after a running-in period where mechanical and thermal severities of contact remained mostly below their respective threshold values, promoting mild wear regimes. Load-carrying capacity of ZrO_2-SiC was the highest due to high homogeneity and low roughness of the tribofilm on SiC disk's wear track.

Sliding frictionWear mapsAqueous lubricationCeramic

Nathan Fantecelle Strey、Rogerio Ramos、Cherlio Scandian

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Tribology, Corrosion, and Materials Laboratory, Department of Mechanical Engineering, Federal University of Espirito Santo

Research Group for Oil & Gas Flow and Measurement, Department of Mechanical Engineering, Federal University of Espirito Santo

2022

10.1016/j.wear.2022.204328

Wear

Wear

EISCI
ISSN：0043-1648
年,卷(期)：2022.498/499
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