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dc.contributor.authorAhmed, Rasha A.
dc.date.accessioned2022-06-01T13:14:03Z
dc.date.available2022-06-01T13:14:03Z
dc.date.issued2016-07-21
dc.identifier.citationAhmed, R. A. (2016). A Comparative Study on the Corrosion Performance of Ni47Ti49Co4 and Ni51Ti49 Shape Memory Alloys in Simulated Saliva Solution for Dental Applications. Acta Metallurgica Sinica (English Letters), 29(11), 1001–1010. doi:10.1007/s40195-016-0463-5
dc.identifier.issn2194-1289
dc.identifier.issn1006-7191
dc.identifier.doi10.1007/s40195-016-0463-5
dc.identifier.urihttp://hdl.handle.net/10754/678439
dc.description.abstractIn this study, the corrosion behavior of Ni47Ti49Co4 shape memory alloy (SMA) was investigated in simulated saliva solution with the binary alloy Ni51Ti49 as a reference. The surface morphology and the chemical composition of the oxide films were characterized by scanning electron microscopy and X-ray photoelectron spectroscopy before and after immersion in the test solutions, respectively. The results showed that the ternary alloy was less affected by the test solution, owning to the formation of passive layer composed mainly of the oxides of titanium and cobalt in several oxidation states. Cyclic voltammetry, electrochemical impedance spectroscopy and potentiodynamic polarization measurements affirmed that the passive oxide film significantly improved the corrosion resistance of Ni47Ti49Co4 SMAs as demonstrated by the smaller corrosion current density, larger resistance and smaller capacitance. Consequently, alloying with cobalt, which has paramount importance in enhancing the passive layer, expands the use of Ni47Ti49Co4 SMAs in dental work as new nitinol alloys with high corrosion resistances.
dc.description.sponsorshipThe author is grateful for the financial support of Chemistry Department (Taif University, Saudi Arabia). The author would like to thank Core labs in King Abdullah University of Science and Technology (KAUST) for performing SEM and XPS analysis.
dc.publisherSpringer Science and Business Media LLC
dc.relation.urlhttp://link.springer.com/10.1007/s40195-016-0463-5
dc.subjectNi47Ti49Co4
dc.subjectShape memory alloy (SMA)
dc.subjectCorrosion
dc.subjectArtificial saliva
dc.subjectX-ray photoelectron spectroscopy (XPS)
dc.titleA Comparative Study on the Corrosion Performance of Ni47Ti49Co4 and Ni51Ti49 Shape Memory Alloys in Simulated Saliva Solution for Dental Applications
dc.typeArticle
dc.identifier.journalACTA METALLURGICA SINICA-ENGLISH LETTERS
dc.identifier.wosutWOS:000387275200003
dc.contributor.institutionChemistry Department, Faculty of Science, Taif University, Taif, Saudi Arabia
dc.contributor.institutionForensic Chemistry Laboratories, Medico Legal Department, Ministry of Justice, Cairo, Egypt
dc.identifier.volume29
dc.identifier.issue11
dc.identifier.pages1001-1010
dc.identifier.eid2-s2.0-84992049130
kaust.acknowledged.supportUnitCore labs


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