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Dense nanostructured calcium phosphate coating on titanium by cold spray
Univ Barcelona, CPT, Dept Ciencia Mat & Engn Met, Marti & Franques 1, E-08028 Barcelona, Spain..
Univ Barcelona, CPT, Dept Ciencia Mat & Engn Met, Marti & Franques 1, E-08028 Barcelona, Spain..
Univ Barcelona, CPT, Dept Ciencia Mat & Engn Met, Marti & Franques 1, E-08028 Barcelona, Spain..
Univ Barcelona, CPT, Dept Ciencia Mat & Engn Met, Marti & Franques 1, E-08028 Barcelona, Spain..
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2017 (English)In: Journal of the European Ceramic Society, ISSN 0955-2219, E-ISSN 1873-619X, Vol. 37, no 4, p. 1747-1755Article in journal (Refereed) Published
Abstract [en]

This article deals with the understanding of building-up mechanisms of bioactive nanocrystalline hydroxyapatite coatings by Cold Spray, revealing very promising results in contrast to more conventional techniques such as Plasma Spray. A full characterization of feedstock and coatings is provided. The agglomerated structure of the powder proved to be suitable to obtain successfully thick hydroxyapatite coatings. A crystallite size below similar to 20 nm in the powder and the as-sprayed coatings is calculated by the Rietveld X-ray refinement method and agreed by Transmission Electron Microscopy. Some wipe tests were carried out on Ti6Al4V substrates in order to study the deposition of single particles and the nanoscale features were evaluated. The resulting structure indicates that there is no delimitation of particle boundaries and the overall coating has been formed by effective compaction of the original nanocrystallites, leading to consistent and consolidated layers. (C) 2016 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 37, no 4, p. 1747-1755
Keywords [en]
Coating, Nanocrystalline calcium phosphate, Cold spray, Electron microscopy
National Category
Materials Engineering
Research subject
Materials Engineering
Identifiers
URN: urn:nbn:se:kau:diva-65097DOI: 10.1016/j.jeurceramsoc.2016.11.040ISI: 000394482700065OAI: oai:DiVA.org:kau-65097DiVA, id: diva2:1158141
Available from: 2017-11-17 Created: 2017-11-17 Last updated: 2017-11-17Bibliographically approved

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Vilardell, Anna M.
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