Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.sna.2005.12.042
Title: Tribology of a novel UHMWPE/PFPE dual-film coated onto Si surface
Authors: Satyanarayana, N. 
Sinha, S.K. 
Ong, B.H.
Keywords: PFPE
Thin-film lubrication
UHMWPE film
Issue Date: 31-Mar-2006
Citation: Satyanarayana, N., Sinha, S.K., Ong, B.H. (2006-03-31). Tribology of a novel UHMWPE/PFPE dual-film coated onto Si surface. Sensors and Actuators, A: Physical 128 (1) : 98-108. ScholarBank@NUS Repository. https://doi.org/10.1016/j.sna.2005.12.042
Abstract: A novel wear resistant polymer composite layer is coated onto the Si surface. The first layer consists of ultra-high molecular weight polyethylene (UHMWPE) film and the second top layer is made of perfluoropolyether (PFPE). These two layers are coated onto Si using a simple dip-coating technique. This particular combination of dual-film has reduced the coefficient of friction by at least 6 times and increased the wear resistance of the Si surface by at least 1000 times with very minimum to no sign of wear debris formation. The tribological tests are carried out using ball-on-disk tribometer employing 4 mm diameter Si3N4 ball as the counterface at a nominal contact pressure of ∼370 MPa. The UHMWPE/PFPE dual-film provides hydrophobic surface with very high water contact angle (134°). Finally, this dual-film may find applications in reducing wear and stiction of micro-components (such as micro-electro-mechanical systems) made from Si. © 2005 Elsevier B.V. All rights reserved.
Source Title: Sensors and Actuators, A: Physical
URI: http://scholarbank.nus.edu.sg/handle/10635/85811
ISSN: 09244247
DOI: 10.1016/j.sna.2005.12.042
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