Influence of Grain Size and Humidity on the Nanotribological Properties of Wear-Resistant Nanostructured ZrO2 Coatings: An Atomic Force Microscopy Study
Abstract:The nanotribological properties of nanostructured thin films of tetragonal ZrO2 on oxidized Si (100) were studied as a function of grain size and relative humidity (RH) by atomic force microscopy. The nanostructured ZrO2 showed a 50% decrease in friction coefficient compared with oxidized Si (100) in dry nitrogen atmosphere and 40% RH. A maximum of was observed at ca. 40% RH for both samples, while there were insignificant differences in for ZrO2 samples with grain sizes between 12 and 30 nm. The good tribological properties open the possibility for nanostructured zirconia to be applied as wear-resistant, low friction coatings on various materials.
Document Type: Research Article
Affiliations: 1: Department of Materials Science and Technology of Polymers, MESA+ Institute for Nanotechnology and Faculty of Science and Technology, University of Twente, 7500 AE Enschede, The Netherlands 2: Department of Inorganic Materials Science, MESA+ Institute for Nanotechnology and Faculty of Science and Technology, University of Twente, 7500 AE Enschede, The Netherlands
Publication date: September 1, 2005