Investigation of the Scaling of Friction Coefficients from the Nano to the Micro Level for Base Materials and Coatings

authored by: N. Heimes, F. Pape, D. Konopka, S. Schöler, K. Möhwald, G. Poll, B. A. Behrens
Abstract: The application of solid lubricants offers high potential in terms of resource-efficiency in contacts under relative motion. The disadvantage of this lubrication method is the high risk of interface failure after the coating has been worn. In order to predict the service life of coated surfaces, it is necessary to determine the microscopic wear behaviour by analysing the coating hardness and coefficient of friction (CoF). Due to layer thicknesses under 3 µm, these parameters can only be determined using nanoindents and nano-scratch-tests. These tests require a transfer of material properties and tribological parameters from the nano to the micro level. The transfer method to the micro level and validity of the values determined at the nano level is presented while also describing challenges due to different influences of the respective size level. Additionally, oscillating sliding tests are carried out to determine the friction properties during sliding, which correspond to reference tests performed on the micro level.
Organisation(s): Institute of Metal Forming and Metal Forming Machines
Institute of Machine Elements and Engineering Design
Institute of Materials Science
Type: Contribution to book/anthology
Pages: 161-170
No. of pages: 10
Publication date: 2021
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Industrial and Manufacturing Engineering, Economics, Econometrics and Finance (miscellaneous), Safety, Risk, Reliability and Quality
Sustainable Development Goals: SDG 8 - Decent Work and Economic Growth, SDG 12 - Responsible Consumption and Production
Electronic version(s): https://doi.org/10.1007/978-3-662-62138-7_17 (Access: Closed)