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Influence of Grain Size and Humidity on the Nanotribological Properties of Wear-Resistant Nanostructured ZrO2 Coatings: An Atomic Force Microscopy Study

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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

DOI: http://dx.doi.org/10.1111/j.1551-2916.2005.00459.x

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

bsc/jace/2005/00000088/00000009/art00028
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