Tribofilm formation during dry sliding of graphite- and MoS2- based composites obtained by spark plasma sintering
| Autor: | M.F.C. Ordoñez, Sylvie Descartes, Izabel Fernanda Machado, María Cristina Moré Farias, Roberto Molina de Souza |
|---|---|
| Přispěvatelé: | Universidade de São Paulo (USP), Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Mechanical Engineering Spark plasma sintering 02 engineering and technology Surfaces and Interfaces 021001 nanoscience & nanotechnology Surfaces Coatings and Films Matrix (chemical analysis) [PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph] [SPI]Engineering Sciences [physics] 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Scratch Extrusion Graphite Composite material Lubricant 0210 nano-technology computer Contact pressure ComputingMilieux_MISCELLANEOUS computer.programming_language Sliding wear |
| Zdroj: | Tribology International Tribology International, Elsevier, 2021, 160, pp.107035. ⟨10.1016/j.triboint.2021.107035⟩ |
| ISSN: | 0301-679X |
| DOI: | 10.1016/j.triboint.2021.107035⟩ |
| Popis: | Composites of Astaloy 85Mo with the addition of MoS2, graphite or a mixture of graphite/MoS2 were consolidated using Spark Plasma Sintering. Dry sliding wear tests were conducted at different normal loads (5, 10, and 20 N) using the sintered samples against an AISI 52100 ball. The effect of contact pressure on the extrusion of solid lubricant was investigated using scratch tests. Graphite addition to the matrix provided the formation of a tribofilm, which lead to the lowest values of friction and wear. For the MoS2-composites, the formation of iron sulfides and oxidative products resulted in an increase in the friction coefficient at the highest normal loads. For the MoS2/graphite-composite, the samples exhibited an intermediate friction coefficient and the highest hardness. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect