Abstract
AbstractThe application of polymers in power-transmitting machine elements, e.g., gears, is limited by moderate thermo-mechanical properties and the detrimental accumulation of contact heat, even with external lubrication. Hence, polymer rolling–sliding elements are often prone to thermo-mechanical overload or abrasive wear. Diamond-like carbon (DLC) coatings are well known from steel applications for enhancing wear resistance and reducing friction. Since preliminary results indicate promising results for such coatings for polymers as well, their influence on the behavior of lubricated polymer contacts is investigated by numerical simulation. For polymer–steel contacts, the mechanical and thermophysical properties of coating and polymer are varied. The contact geometry is dominated by a local conformity, in which most of the deformation is related to the polymer. The DLC coatings affect film thickness and hydrodynamic pressure only little even for untypical high coating thicknesses. In contrast, the contact temperature decreases already for very thin coatings due to enhanced heat removal. Hence, DLC coatings can act as a thermal barrier protecting the polymer from detrimental heat and protecting the polymer from abrasive wear.
Publisher
Springer Science and Business Media LLC
Subject
Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering,Mechanics of Materials
Reference47 articles.
1. Bobzin, K., Brögelmann, T., Kalscheuer, C., Thiex, M., Stahl, K, Lohner, T., Maier, E., Reitschuster, S.: Steigerung der Leistungsfähigkeit technischer Kunststoffe durch DLC-Beschichtungen [Improved Tribological Performance of Technical Plastics by DLC]. In: Proceeding of the 60th German Tribology Conference (GfT) Göttingen (2019)
2. Esfahanian, M., Hamrock, B.J.: Fluid-film lubrication regimes revisited. Tribol. Trans. (1991). https://doi.org/10.1080/10402009108982081
3. Marx, N., Guegan, J., Spikes, H.A.: Elastohydrodynamic film thickness of soft EHL contacts using optical interferometry. Tribol. Int. (2016). https://doi.org/10.1016/j.triboint.2016.03.020
4. Leeuwen van, H.J., Schouten, M.J.W.: Die Elastohydrodynamik: Geschichte und Neuentwicklungen [Elastohydrodynamic: History and new Development]. VDI-Report No. 1207, VDI-Verlag, Düsseldorf, Germany (1995)
5. Stupkiewicz, S., Lengiewicz, J., Sadowski, P., Kucharski, S.: Finite deformation effects in soft elastohydrodynamic lubrication problems. Tribol. Int. (2016). https://doi.org/10.1016/j.triboint.2015.03.016
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