Assessment of corrosion behavior in artificial saliva of wires for orthodontic applications
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Publication Details
Author list: Phukaoluan A., Khantachawana A., Kaewtatip P., Dechkunakorn S.
Publisher: Trans Tech Publications
Publication year: 2018
Volume number: 917 MSF
Start page: 197
End page: 201
Number of pages: 5
ISBN: 9783035712131
ISSN: 0255-5476
eISSN: 1662-9752
Languages: English-Great Britain (EN-GB)
Abstract
The aim of this study, the corrosion behavior of TiNiCu in artificial saliva (pH5.35) at 37oC was assessed by the use of electrochemical methods. Ti50Ni43Cu7(at%) used in this study were made from ingots prepared by the vacuum arc melting (VAM) method. The furnace was purged with argon gas during melting. All melted ingots were then homogenized at 800oC for 3.6 ks. Open circuit potential (OCP) was monitored at 3.6 ks followed by potentiodynamic techniques. The results showed that all chemical composition of orthodontic wires by EPMA were Ti, Ni, Cu, Cr, Fe and Mn. Surface roughness was measured in order to ensure that TiNiCu and SS was significant difference which might affect corrosion resistance. It was seen that TiNiCu orthodontic wires, presented a good corrosion resistance, compared to the stainless steel, probably due to the formation of a protective oxide film mainly constituted by titanium oxide. ฉ 2018 Trans Tech Publications, Switzerland.
Keywords
TiNiCu alloys
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