Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/17342
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dc.contributor.authorKajima Y.
dc.contributor.authorTakaichi A.
dc.contributor.authorKittikundecha N.
dc.contributor.authorHtat H.L.
dc.contributor.authorCho H.H.W.
dc.contributor.authorTsutsumi Y.
dc.contributor.authorHanawa T.
dc.contributor.authorWakabayashi N.
dc.contributor.authorYoneyama T.
dc.date.accessioned2022-03-10T13:16:54Z-
dc.date.available2022-03-10T13:16:54Z-
dc.date.issued2021
dc.identifier.issn1095641
dc.identifier.other2-s2.0-85096199148
dc.identifier.urihttps://ir.swu.ac.th/jspui/handle/123456789/17342-
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85096199148&doi=10.1016%2fj.dental.2020.10.020&partnerID=40&md5=6f823f365018b2a8f46ec5a35a279123
dc.description.abstractObjectives: The application of selective laser melting (SLM) to dentistry has been rapidly expanding; however, SLM-processed parts possess orientation-dependent properties (i.e., anisotropy) that can affect the long-term reliability of the dental prostheses. This study aimed to evaluate the anisotropic corrosion response of SLM-processed Co–Cr–Mo alloys under various heat treatments. Methods: Samples fabricated via SLM along the horizontal plane (x-y plane) and vertical plane (x-z plane), with respect to the build direction, were subjected to various heat treatments. The resulting microstructures of the samples were characterized, and their corrosion properties were evaluated using anodic polarization and immersion tests. Results: All samples showed similar transpassive behavior of the polarization curves. However, the immersion tests showed that the as-built x-z plane samples released significantly more metal ions than those fabricated on the x-y plane because of the larger area of preferentially corroded molten pool boundaries (MPBs) in the x-z plane samples. Our results further demonstrated that the heat treatments eliminated the MPBs, resulting in isotropic corrosion properties. However, excessive heat treatment at high temperatures induces the formation of coarse precipitates, resulting in a less-protective passive film. Significance: The post-build heat treatments at temperatures that eliminate the MPBs are effective in reducing anisotropic corrosion behavior, and the lowest possible temperature is suitable for reducing the amount of released metal ions. These findings are expected to facilitate the application of SLM in dentistry to allow fast and precise production of prosthetic devices. © 2020 The Academy of Dental Materials
dc.languageen
dc.subjectAnisotropy
dc.subjectCorrosive effects
dc.subjectDental prostheses
dc.subjectDentistry
dc.subjectHeat treatment
dc.subjectMetal ions
dc.subjectMetals
dc.subjectMolybdenum alloys
dc.subjectPolarization
dc.subjectProsthetics
dc.subjectAnisotropic response
dc.subjectCorrosion behavior
dc.subjectCorrosion property
dc.subjectOrientation dependent
dc.subjectPolarization curves
dc.subjectPost heat-treatment
dc.subjectProsthetic devices
dc.subjectSelective laser melting (SLM)
dc.subjectSelective laser melting
dc.subjectalloy
dc.subjectchromium derivative
dc.subjectdental alloy
dc.subjectanisotropy
dc.subjectcorrosion
dc.subjectheat
dc.subjectlaser
dc.subjectreproducibility
dc.subjectsurface property
dc.subjectAlloys
dc.subjectAnisotropy
dc.subjectChromium Alloys
dc.subjectCorrosion
dc.subjectDental Alloys
dc.subjectHot Temperature
dc.subjectLasers
dc.subjectReproducibility of Results
dc.subjectSurface Properties
dc.titleReduction in anisotropic response of corrosion properties of selective laser melted Co–Cr–Mo alloys by post-heat treatment
dc.typeArticle
dc.rights.holderScopus
dc.identifier.bibliograpycitationDental Materials. Vol 37, No.3 (2021), p.e98-e108
dc.identifier.doi10.1016/j.dental.2020.10.020
Appears in Collections:Scopus 1983-2021

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