Merck
  • Inicio
  • Resultados de la búsqueda
  • Comparative study on corrosion behaviour of Nitinol and stainless steel orthodontic wires in simulated saliva solution in presence of fluoride ions.

Comparative study on corrosion behaviour of Nitinol and stainless steel orthodontic wires in simulated saliva solution in presence of fluoride ions.

Materials science & engineering. C, Materials for biological applications (2013-03-19)
M Mirjalili, M Momeni, N Ebrahimi, M H Moayed
RESUMEN

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.

MATERIALES
Referencia del producto
Marca
Descripción del producto

Sigma-Aldrich
Nitric acid, 70%, purified by redistillation, ≥99.999% trace metals basis
Supelco
Nitric acid concentrate, 0.1 M HNO3 in water (0.1N), eluent concentrate for IC
Sigma-Aldrich
Nitric acid, ACS reagent, ≥90.0%
Sigma-Aldrich
Nitric acid, puriss. p.a., 65.0-67.0%
Sigma-Aldrich
Nitric acid, puriss. p.a., ≥65% (T)
Sigma-Aldrich
Nitric acid, puriss. p.a., reag. ISO, reag. Ph. Eur., for determinations with dithizone, ≥65%
Sigma-Aldrich
Nitric acid, red, fuming, HNO3 >90 %
Sigma-Aldrich
Nitric acid, ACS reagent, 70%