Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/77903
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dc.contributor.authorWang, WJen_US
dc.contributor.authorYung, KCen_US
dc.contributor.authorChoy, HSen_US
dc.contributor.authorXiao, TYen_US
dc.contributor.authorCai, ZXen_US
dc.date.accessioned2018-08-28T01:35:32Z-
dc.date.available2018-08-28T01:35:32Z-
dc.date.issued2018-
dc.identifier.citationApplied surface science, 2018, v. 443, p. 167-175en_US
dc.identifier.issn0169-4332-
dc.identifier.urihttp://hdl.handle.net/10397/77903-
dc.description.abstractLaser polishing of 3D printed metal components has drawn great interest in view of its potential applications in the dental implant industries. In this study, corrosion resistance, surface composition and crystalline structure of CoCr alloys were investigated. The corrosion resistance, micromorphology, composition, phase transformations and crystalline structures of samples were characterized using an electrochemical analyzer, scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD) and transmission electron microscope (TEM), respectively. The results indicate that high laser powers and low object distances within a certain range can facilitate the formation of complex oxide films, which exhibits high corrosion resistance. Further, object distances have a significant influence on cooling rates during the solidification of the melt pool in laser polishing, and fast cooling generates vast amounts of vacancies and defects, which result in the crystalline phase transformation from γ to ε. Consequently, the formed oxides play an important role in corrosion resistance on the outer layer, and inner layer with γ phase also helps keep the CoCr alloys in a stable structure with high resistant to corrosion. The two process parameters in laser polishing, laser power and object distances, are demonstrated as being important for controlling the surface microstructures and corrosion resistance of the additive manufactured CoCr alloy components.en_US
dc.description.sponsorshipDepartment of Industrial and Systems Engineeringen_US
dc.language.isoenen_US
dc.publisherNorth-Hollanden_US
dc.relation.ispartofApplied surface scienceen_US
dc.subjectAdditive manufacturingen_US
dc.subjectCoCr alloyen_US
dc.subjectCorrosion resistanceen_US
dc.subjectCrystalline structureen_US
dc.subjectLaser polishingen_US
dc.titleEffects of laser polishing on surface microstructure and corrosion resistance of additive manufactured CoCr alloysen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage167-
dc.identifier.epage175-
dc.identifier.volume443-
dc.identifier.doi10.1016/j.apsusc.2018.02.246-
dc.identifier.isiWOS:000428446300021-
dc.identifier.scopus2-s2.0-85042693238-
dc.identifier.eissn1873-5584-
dc.identifier.rosgroupid2017004742-
dc.description.ros2017-2018 > Academic research: refereed > Publication in refereed journal-
dc.description.validate201808 bcrc-
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