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Friction characteristics of polymers applicable to small-scale devices
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Wang, Zhongnan, Chetwynd, D. G. and Mao, Ken (2018) Friction characteristics of polymers applicable to small-scale devices. Tribology International, 119 . pp. 698-706. doi:10.1016/j.triboint.2017.11.036 ISSN 0301-679X.
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Official URL: http://dx.doi.org/10.1016/j.triboint.2017.11.036
Abstract
A review of the critical features of a published micro-tribometer design, which was intended to improve on the dynamic response of typical commercial instruments, leads to its use with a modified technique. Data post-processing is introduced to partially compensate for some potential systematic errors. This approach is demonstrated by a preliminary study of the coefficient of friction (CoF) in sub-mm length reciprocating sliding motion for samples of polytetrafluoroethylene (PTFE) and an R11 acrylic formulation made by micro-stereo-lithography, with an SiO2-coated silicon wafer used as a control sample. Testing covered normal loads in the region of 10 mN–60 mN, at scan frequencies up to 9 Hz, corresponding to sliding speeds in the broad region of 1 mm s−1. While the control samples closely adhered to Amonton's laws over all the test parameter ranges, the CoFs of the two polymers showed contrasting patterns of dependence on sliding speed and repetition rate. Such results have implications for how polymers might be used effectively in future designs for small mechanical systems. They indicate a clear need for further development of the testing methods and large-scale studies of tribological behaviour and its underlying mechanisms under the specified micro-scale conditions.
Item Type: | Journal Article | ||||||||||
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Subjects: | Q Science > QD Chemistry T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||||
Library of Congress Subject Headings (LCSH): | Polymers, Microelectromechanical systems | ||||||||||
Journal or Publication Title: | Tribology International | ||||||||||
Publisher: | Elsevier Science Ltd. | ||||||||||
ISSN: | 0301-679X | ||||||||||
Official Date: | March 2018 | ||||||||||
Dates: |
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Volume: | 119 | ||||||||||
Page Range: | pp. 698-706 | ||||||||||
DOI: | 10.1016/j.triboint.2017.11.036 | ||||||||||
Status: | Peer Reviewed | ||||||||||
Publication Status: | Published | ||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||
Date of first compliant deposit: | 20 December 2017 | ||||||||||
Date of first compliant Open Access: | 5 December 2018 |
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