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Ceramics-Silikáty 59 (1) 59-63 (2015)


COMPARATIVE STUDY ON WEAR PERFORMANCE OF TRADITIONAL AND NANOSTRUCTURED Al2O3–13 wt. % TiO2 AIR PLASMA SPRAY COATINGS

YAO S.-H.

This study is an attempt to understand the difference between traditional and nanostructured Al2O3 – 13 wt. % TiO2 air plasma spray (APS) coatings. Both coatings were prepared using commercial feedstock powders. The resulting coatings were comparatively studied by means of the micro Vickers hardness tester, XRD, SEM, EDX and SRV® reciprocating sliding wear tester. The results showed that remarkable deviations were found between these two coatings. Compared with the traditional coating as a reference, the nanostructured coating showed hardness enhancement (Hv998 vs. Hv895) and wear improvement reaching 60 %. The mechanisms involved were discussed.

Keywords: Nanostructured materials, Wear, Air Plasma Spray, Al2O3, TiO2

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