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dc.contributor.authorLyphout, Christophe
dc.contributor.authorBolelli, Giovanni
dc.contributor.authorKarhanová, Eva
dc.contributor.authorSato, Kazuto
dc.contributor.authorYamada, Junya
dc.contributor.authorHoudková Šimůnková, Šárka
dc.contributor.authorLusvarghi, Luca
dc.contributor.authorManfredini, Tiziano
dc.date.accessioned2019-11-25T11:00:19Z-
dc.date.available2019-11-25T11:00:19Z-
dc.date.issued2019
dc.identifier.citationLYPHOUT, C. H., BOLELLI, G., KARHANOVÁ, E., SATO, K., YAMADA, J., HOUDKOVÁ ŠIMŮNKOVÁ, Š., LUSVARGHI, L., MANFREDINI, T. Influence of hardmetal feedstock powder on the sliding wear and impact resistance of High Velocity Air-Fuel (HVAF) sprayed coatings. WEAR, 2019, roč. 430, č. JUL 15 2019, s. 340-354. ISSN 0043-1648.en
dc.identifier.issn0043-1648
dc.identifier.uri2-s2.0-85066275915
dc.identifier.urihttp://hdl.handle.net/11025/35986
dc.description.abstractPráce je objasňuje, jak charakter WC-CoCr prášku, zejména velikost WC a matrice a pevnost jejich vzájemné vazby ovlivňuje kluzné třecí vlastnosti a odolnost proti cyklickému impaktnímu zatěžování povlaků deponovaných pomocí HVAF technologie.cs
dc.format15 s.
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherElsevieren
dc.relation.ispartofseriesWEARen
dc.rightsPlný text není přístupný.cs
dc.rights© Elsevieren
dc.subjectŽárový nástřikcs
dc.subjectcermetcs
dc.subjectkluzné opotřebenícs
dc.subjectimpaktní namáhánícs
dc.subjectmetoda konečných orvkůcs
dc.titleInfluence of hardmetal feedstock powder on the sliding wear and impact resistance of High Velocity Air-Fuel (HVAF) sprayed coatingsen
dc.title.alternativeVliv výchozího prášku na odolnost proti koluznému opotřebení a cyklickému impaktnímu namáhání HVAF nástřiku.cs
dc.typečlánekcs
dc.typearticleen
dc.rights.accessclosedAccessen
dc.type.versionpublishedVersionen
dc.description.abstract-translatedThe present work aimed to clarify how the characteristics of WC-CoCr hardmetal feedstock powders, namely thegrain size of the WC carbides and of the binder and the compressive strength of the sintered aggregates, affect the dry sliding wear and impact resistance of coatings deposited by High Velocity Air-Fuel (HVAF) spraying. Ball-on-Disc tests, which mimic a sliding wear process in the presence of hard asperities as it may occur e.g. in hydraulic seal joints or papermaking components, resulted in mild wear through near-surface microscale plasticflow, the exact nature of which was significantly affected by WC size. Finite element simulations of a singleasperity sliding process indeed showed that large WC grains concentrate contact stresses, thus undergoing very localised deformation. It is experimentally seen that repeated deformation of the carbide grains resulted in their cracking and pull-out. Uniformly distributed, fine carbides allowed the matrix to take on some stress, thus undergoing more homogeneous plastic flow. Block-on-Ring tests elicited adhesive wear as it may happen e.g. in metal-to-metal contacts (e.g. petrochemical valves). This could be effectively restrained by low matrix mean free path. Cyclic impact resistance of coarse-grained coatings was better than that of fine-grained ones, because of better large-scale cohesive strength.en
dc.subject.translatedThermal spray coatingsen
dc.subject.translatedcermetsen
dc.subject.translatedsliding wearen
dc.subject.translatedimpact wearen
dc.subject.translatedfinite element modellingen
dc.identifier.doi10.1016/j.wear.2019.05.016
dc.type.statusPeer-revieweden
dc.identifier.document-number471597300035
dc.identifier.obd43927371
Appears in Collections:Články / Articles (CT3)
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