期刊
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
卷 33, 期 4, 页码 2084-2093出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.msec.2013.01.026
关键词
Stainless steel; Nitinol; Pitting corrosion; Crevice corrosion; Passivity
资金
- Ferdowsi University of Mashhad
Localized corrosion and effects of pre-passivation treatment of Nitinol and SS304 orthodontic wires in simulated saliva solution in the presence and absence of fluoride ions were investigated by means of potentiodynamic and potentiostatic polarisations. Results revealed that Nitinol does not show pitting corrosion in saliva solution however, SS304 shows pitting corrosion. Meanwhile fluoride ion has deteriorative effect on pitting corrosion of Nitinol, while its effect on SS304 was marginally constructive. Additionally, the presence of artificial crevice has no effect on corrosion behaviour in the presence of fluoride. Pre-passivation treatment has positive influence on pitting corrosion of both alloys in the presence of F- ions. (c) 2013 Elsevier B.V. All rights reserved.
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