Kharissova, Oxana V. Irkha, Vladimir A. Drogan, Ekaterina G. Burlakova, Victoria E. Zhinzhilo, Vladimir A. Uflyand, Igor E.
Published in
Tribology Letters
In the present study, a facile and easily accessible method for obtaining copper-containing nanomaterials by thermolysis of copper cinnamate complex with 4′-phenyl-2,2′:6′,2″-terpyridine at 300 °C was developed. The obtained nanomaterials were studied using X-ray diffraction, atomic force microscopy, scanning electron microscopy and energy dispersi...
Vacher, Robin de Wijn, Astrid S.
Published in
Tribology Letters
We investigate the underlying tribological mechanisms and running-in process of a semi-crystalline polymer using molecular-dynamics simulations. We subject a slab of simulated polyvinyl alcohol to a sliding contact asperity resembling a friction force microscope tip. We study the viscoelastic response of the polymer to the sliding and show both pla...
Li, Jiahao Peng, Yong Tang, Xianqiong Xu, Qian Liu, Bo Bai, Lichun
Published in
Tribology Letters
Graphene is a good candidate for solid lubricants due to its unique atomic structure. Its lubrication properties are sensitive to chemical modifications such as hydrogenations. Here, an investigation on the lubrication behavior of hydrogenated graphene on a substrate of diamond-like carbon films is performed via molecular dynamics simulations. Hydr...
Pominov, Arkadii Müller-Hillebrand, Johannes Träg, Johannes Zahn, Dirk
Published in
Tribology Letters
Ab-initio based benchmarking and improvements of molecular mechanics models for organic friction modifier (OFM) additives used in lubricants are presented. We found the generalized amber force field (GAFF2) appears well suited to model oil-steel interfaces moderated by fatty acids. However, explicit refinements are needed for describing the interac...
Chen, Zhe Gu, Chongjie Tian, Tian
Published in
Tribology Letters
AbstractZinc dialkyldithiophosphate (ZDDP) is a widely used lubricant additive due to its high effectiveness in reducing wear by forming a tribofilm on sliding surfaces. However, the formation and removal of tribofilm are two competing processes depending on the working conditions, and ZDDP loses its anti-wear function when the removal process prev...
Zhang, Hao Chang, Qiuying
Published in
Tribology Letters
AbstractNanolubricant additives have attracted wide attention because of their promising prospects in energy saving, emission reduction, and improvement of equipment reliability. In this study, the core–shell nanocomposites of a-C:F coating nano-magnesium silicate hydroxide ([email protected]:F) were prepared in subcritical water. Polytetrafluoroethylene (PTFE...
Vellore, Azhar Romero Garcia, Sergio Johnson, Duval A. Martini, Ashlie
Published in
Tribology Letters
A multivariate tribological evaluation of candidate materials, surface treatments and dry film lubricants is needed for design of moving mechanical components that function reliably in extreme conditions, including for long-duration space missions. In this study, linear reciprocating or unidirectional sliding friction data was collected using ball-...
Papangelo, Antonio Ciavarella, Michele
Published in
Tribology Letters
Recently, Dalvi and co-authors have shown detailed experimental data of adhesion of soft spheres with rough substrates with roughness measured down to almost the atomic scale, finding that the Persson and Tosatti theory gave satisfactory predictions of the apparent work of adhesion during loading, once the increase of the surface area due to roughn...
Zhang, Jie Ueda, Mao Campen, Sophie Spikes, Hugh
Published in
Tribology Letters
The frictional properties of ZDDP tribofilms at low entrainment speeds in boundary lubrication conditions have been studied in both rolling/sliding and pure sliding contacts. It has been found that the boundary friction coefficients of these tribofilms depend on the alkyl structure of the ZDDPs. For primary ZDDPs, those with linear alkyl chains giv...
Shi, Yan Xiong, Dangsheng Li, Jianliang Li, Long Liu, Qibin Dini, Daniele
Published in
Tribology Letters
Graphene oxide (GO) was incorporated into polyvinyl alcohol (PVA) hydrogel to improve its mechanical and tribological performances for potential articular cartilage replacement application. The compressive mechanical properties, creep resistance, and dynamic mechanical properties of PVA/GO hydrogels with varied GO content were studied. The friction...
