Micro-scale impact resistance of coatings on hardened tool steel and cemented carbide

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dc.contributor.authorBeake, Ben D.
dc.contributor.authorIsern, Luis
dc.contributor.authorEndrino, José L.
dc.contributor.authorLiskiewicz, T. W.
dc.contributor.authorShi, X.
dc.date.accessioned2020-11-25T16:06:31Z
dc.date.available2020-11-25T16:06:31Z
dc.date.issued2020-11-12
dc.description.abstractMicro-impact, a novel accelerated test method for assessing coating durability under repetitive contact, has been developed to concentrate impact-induced stresses close to the interfaces in coating systems. Test results are described for carbon coatings on hardened tool steel and nitride-based coatings on cemented carbide. At higher load it was possible to show the increasing contribution of the substrate properties (load support and ductility) to the coating system response whilst retaining high sensitivity to the coating properties. Hard and elastic carbon coatings on hardened tool steel displayed very low impact resistance under these conditions. Relatively soft carbon-based coatings with more metallic character and high plasticity (low H/E) deposited on hard but tough tool steel were resistant to radial cracking and lateral fracture at high load. Lateral fracture at high load and extensive substrate cracking was observed at higher load for hard nitrides on cemented carbide. The micro-impact test has the potential to significantly speed up the pace of coating system selection for durability under highly loaded repetitive contacts, as occur in coatings applications in engine components and in discontinuous cutting operationsen_UK
dc.identifier.citationBeake BD, Isern L, Endrino JL, et al., (2020) Micro-scale impact resistance of coatings on hardened tool steel and cemented carbide. Materials Letters, Volume 284, Part 1, February 2021, Article number 129009en_UK
dc.identifier.issn0167-577X
dc.identifier.urihttps://doi.org/10.1016/j.matlet.2020.129009
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/16038
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectWear and tribologyen_UK
dc.subjectFatigueen_UK
dc.subjectPhysical vapour depositionen_UK
dc.subjectThin filmsen_UK
dc.titleMicro-scale impact resistance of coatings on hardened tool steel and cemented carbideen_UK
dc.typeArticleen_UK

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