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Nanoscale Friction Measurements Up to 750 °C

Smith, J. F., Vishnyakov, Vladimir, Davies, M. I. and Beake, B. D. (2013) Nanoscale Friction Measurements Up to 750 °C. Tribology Letters, 49 (3). pp. 455-463. ISSN 1023-8883

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A new experimental capability for elevated temperature nanoscale friction measurement is described. Its stability and resolution were demonstrated in two case studies up to 750 °C. A stainless steel probe was used to study friction between steel and glass at 25, 200 and 400 °C. Friction forces were calibrated at temperature. The friction coefficient increased between 25 and 200 °C, but stick–slip was dominant at 400 °C due to chemical interaction between the stainless steel probe and the glass. This was verified by scanning Energy Dispersive X-ray Spectroscopy analysis. A WC–Co probe was used to study friction on a range of TiN-based and Cr54Al20C26 (so named MAX-phase composition) coatings at 25, 400 and 750 °C. A maximum in friction coefficient was observed at 400 °C. The decrease in friction at 750 °C was associated with the formation of lubricating surface oxides and oxidation-associated surface roughening.

Item Type: Article
Subjects: Q Science > Q Science (General)
T Technology > T Technology (General)
Schools: School of Computing and Engineering
School of Computing and Engineering > Electron Microscopy and Materials Analysis
Depositing User: Sharon Beastall
Date Deposited: 09 Oct 2014 10:31
Last Modified: 28 Aug 2021 11:43


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