Deposition of Al2O3-TiO2 Nanostructured Powders by Atmospheric Plasma Spraying
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Other documents of the author: Sánchez-Vilches, Enrique; Bannier, Emilie; Cantavella Soler, Vicente; Salvador Moya, María Dolores; Klyatskina, Elizabeta; Morgiel, J.; Grzonka, J.; Boccaccini, Aldo R.
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Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7033
comunitat-uji-handle3:10234/8618
comunitat-uji-handle4:
INVESTIGACIONMetadata
Title
Deposition of Al2O3-TiO2 Nanostructured Powders by Atmospheric Plasma SprayingAuthor (s)
Date
2008Publisher
Springer VerlagISSN
10599630Type
info:eu-repo/semantics/articleVersion
info:eu-repo/semantics/acceptedVersionSubject
Abstract
Al2O3-13%TiO2 coatings were deposited on stainless steel substrates from conventional and nanostructured
powders using atmospheric plasma spraying (APS). A complete characterization of the
feedstock confirmed its ... [+]
Al2O3-13%TiO2 coatings were deposited on stainless steel substrates from conventional and nanostructured
powders using atmospheric plasma spraying (APS). A complete characterization of the
feedstock confirmed its nanostructured nature. Coating microstructures and phase compositions were
characterized using SEM, TEM, and XRD techniques. The microstructure comprised two clearly differentiated
regions. One region, completely fused, consisted mainly of nanometer-sized grains of c-Al2O3
with dissolved Ti+4. The other region, partly fused, retained the microstructure of the starting powder
and was principally made up of submicrometer-sized grains of a-Al2O3, as confirmed by TEM. Coating
microhardness as well as tribological behavior were determined. Vickers microhardness values of conventional
coatings were in average slightly lower than the values for nanostructured coating. The wear
resistance of conventional coatings was shown to be lower than that of nanostructured coatings as a
consequence of Ti segregation. A correlation between the final properties, the coating microstructure,
and the feedstock characteristics is given [-]
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Copyright [year] ASM International. This paper was published in Journal of Thermal Spray Technology, Vol. 17, issue 3, pp. 329-337 and is made available as an electronic reprint with the permission of ASM International. One print or electronic copy may be made for personal use only
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