Wear resistance of chromium oxide nanostructured coatings

Nanostructured plasma-sprayed chromium oxide ceramic coatings, with a higher wear resistance than coatings obtained using micrometric powder as starting material have been developed. The influence of the starting powder, i.e. Cr 2O 3 fused crushed powders and Cr 2O 3 nanopowders having grains size o...

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Veröffentlicht in:Ceramics international 2009-03, Vol.35 (2), p.913-916
Hauptverfasser: Cellard, A., Garnier, V., Fantozzi, G., Baret, G., Fort, P.
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container_issue 2
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creator Cellard, A.
Garnier, V.
Fantozzi, G.
Baret, G.
Fort, P.
description Nanostructured plasma-sprayed chromium oxide ceramic coatings, with a higher wear resistance than coatings obtained using micrometric powder as starting material have been developed. The influence of the starting powder, i.e. Cr 2O 3 fused crushed powders and Cr 2O 3 nanopowders having grains size of 100 nm, has been investigated. The nanopowders are reconstituted into spherical micrometer sized granules by the spray-drying process before plasma spraying. It is shown that due to their specific microstructure the wear resistance of the nanostructured coatings is more than 20 times higher compared to the coatings obtained using micrometric powder.
doi_str_mv 10.1016/j.ceramint.2008.02.022
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subjects Cr 2O 3
Engineering Sciences
Materials
Nanostructure
Nanostructured coating
Plasma spray
Wear
title Wear resistance of chromium oxide nanostructured coatings
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