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| DOI | 10.1021/ACSANM.4C04858 | ||||
| Año | 2024 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Two-dimensional (2D) materials are known to induce excellent solid lubrication performance. However, their performance largely depends on the ambient conditions (working atmosphere), since moisture and oxygen deteriorate the frictional properties of MoS2 and MXenes. Currently, little knowledge is available regarding the humidity-dependent tribological performance of MXene coatings. Therefore, our contribution aims at experimentally evaluating the tribological performance of multilayer Ti3C2T (x) /MoS2 hybrid coatings used as solid lubricants dependent on the relative humidity (10, 35, and 70%). For this purpose, mixed (50% multilayer Ti3C2T x and 50% MoS2) and bilayer (bottom Ti3C2T x and top layer MoS2) hybrid coatings were deposited via spray-coating on chromium steel discs to be tested under dry reciprocating conditions using ball-on-disk tribometry. Our results show that both hybrid coatings performed best under low relative humidities, thus notably improving the resulting friction and wear performance. The favorable tribological mechanism was mainly attributed to the low-shear stress between sulfides derived from MoS2. At higher relative humidities, the formation of oxides detrimentally affected lubrication, thus causing friction to increase and leading to more pronounced wear. This study sheds light on the underlying mechanisms governing friction and wear for hybrid MXene/MoS2 coatings tested at different humidity levels.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Boidi, Guido | Hombre |
AC2T Res GmbH - Austria
AC2T research GmbH - Austria |
| 2 | Zambrano, Dario | Hombre |
Universidad de Chile - Chile
|
| 3 | Ripoll, Manel Rodriguez | - |
AC2T Res GmbH - Austria
AC2T research GmbH - Austria |
| 4 | Rosenkranz, Andreas | Hombre |
Universidad de Chile - Chile
Millennium Nuclei Adv MXenes Sustainable Applicat - Chile ANID - Chile |
| Fuente |
|---|
| FONDEQUIP |
| Fondo Nacional de Desarrollo Científico y Tecnológico |
| Fondecyt Regular |
| ANID |
| Agencia Nacional de Investigación y Desarrollo |
| ANID-Chile |
| ANID Postdoctoral Fondecyt |
| Öterreichisches Exzellenzzentrum für Tribologie |
| Austrian COMET-Programme (Project In Tribology2) |
| Agradecimiento |
|---|
| Austrian COMET-Programme (Project In Tribology2, no. 906860), ANID NCN2023_007, Fondecyt Regular 1220331, Fondequip EQM190057, ANID postdoctoral FONDECYT (3220165). |
| This work was funded by the \u201CAustrian COMET-Program\u201D (InTribology2, no. 906860) under the scope of K2 InTribology and was developed in collaboration with the \u201CExcellence Centre of Tribology\u201D (AC2T research GmbH). Dario F. Zambrano acknowledges the financial support provided by ANID postdoctoral FONDECYT (3220165) and FONDECYT project 1191779. A. Rosenkranz gratefully acknowledges the financial support of ANID-Chile within the projects Fondecyt Regular 1220331 and Fondequip EQM190057 as well as Millennium Science Initiative Program (NCN2023_007). Moreover, special thanks to Tobias Binder (AC2T research GmbH) for his creativity in preparing the graphical abstract. |