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dc.contributor.authorZois, D.en
dc.contributor.authorLekatou, A.en
dc.contributor.authorVardavoulias, M.en
dc.date.accessioned2015-11-24T17:33:52Z-
dc.date.available2015-11-24T17:33:52Z-
dc.identifier.issn0257-8972-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/13903-
dc.rightsDefault Licence-
dc.subjectplasma sprayingen
dc.subjectsinteringen
dc.subjectx-ray diffractionen
dc.subjectmechanical propertiesen
dc.subjectaluminium oxide coatingsen
dc.subjectnanostructureen
dc.subjectpartially-stabilized zirconiaen
dc.subjectalumina-titania coatingsen
dc.subjectnanocrystalline materialsen
dc.subjectalumina/titania coatingsen
dc.subjecttribological propertiesen
dc.subjectnanophase materialsen
dc.subjectfeedstock powdersen
dc.subjectliquid precursorsen
dc.subjectplasmaen
dc.subjectwearen
dc.titleA microstructure and mechanical property investigation on thermally sprayed nanostructured ceramic coatings before and after a sintering treatmenten
heal.typejournalArticle-
heal.type.enJournal articleen
heal.type.elΆρθρο Περιοδικούel
heal.identifier.primaryDOI 10.1016/j.surfcoat.2009.06.013-
heal.identifier.secondary<Go to ISI>://000270639800002-
heal.languageen-
heal.accesscampus-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Μηχανικών Επιστήμης Υλικώνel
heal.publicationDate2009-
heal.abstractCoatings have been deposited by air plasma spraying of alumina powders in the form of conventional particles (C), nanostructured agglomerates (N) and sintered-nanostructured agglomerates (S). Sintering alleviated the stresses introduced in the nanopowder by the manufacturing process (high energy ball milling). The coating porosity is a direct consequence of the powder melting degree, which is related to the feedstock porosity. The mechanical performance of the coatings is also closely associated with the powder melting degree. The N coatings present the highest surface roughness due to the lowest melting degree. The slightly higher hardness values of the N and S coatings, as compared to the C coatings, are attributed to the higher percentages of alpha-Al(2)O(3) and the presence of nanostructure. The S coatings exhibit superior adhesion strength, relative fracture toughness and wear resistance, due to sintering consequences (intraparticle cohesion, strain relief, tough splat boundaries), random dispersion of coherent nanozones and stress dissipation at nanograin boundaries. (C) 2009 Elsevier B.V. All rights reserved.en
heal.publisherElsevieren
heal.journalNameSurface & Coatings Technologyen
heal.journalTypepeer reviewed-
heal.fullTextAvailabilityTRUE-
Appears in Collections:Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά)

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