Effect of Surface Chemistry on the Squeeze-Thin Film and Friction of Boundary Films - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Langmuir Année : 2024

Effect of Surface Chemistry on the Squeeze-Thin Film and Friction of Boundary Films

Résumé

An approach combining adsorption characterization and lubricity effectiveness of amine-based friction modifier molecules has been performed using chemically controlled surfaces, coated either with cobalt or carbon, while keeping the surface roughness constant and sub-nanometric. Through squeeze measurements and numerical modeling, we have identified the mechanical properties of both adsorbed amine films, as a function of the surface on which they were formed. On the one hand, we were able to evidence that the fluid structuring at the vicinity of the adsorbed boundary film differed as a function of the latter mechanical properties, directly resulting from its molecular organization. On the other hand, we showed that the coverage ratio of the monolayer associated with the shear elastic modulus of the boundary film governed the friction level. Changing the surface chemistry while keeping the roughness constant controls the final organization in the boundary layer, the correlated mechanical properties, and the level of friction dissipation.
Fichier sous embargo
Fichier sous embargo
0 10 16
Année Mois Jours
Avant la publication
samedi 15 mars 2025
Fichier sous embargo
samedi 15 mars 2025
Connectez-vous pour demander l'accès au fichier

Dates et versions

hal-04506358 , version 1 (15-03-2024)

Identifiants

Citer

Fadlallah Abouhadid, Van-Vuong Lai, Nazario Morgado, Denis Mazuyer, Juliette Cayer-Barrioz. Effect of Surface Chemistry on the Squeeze-Thin Film and Friction of Boundary Films. Langmuir, 2024, 40 (10), pp.5205-5213. ⟨10.1021/acs.langmuir.3c03409⟩. ⟨hal-04506358⟩
1 Consultations
1 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More