Electrochemical Impedance Spectroscopy Behaviour of NdFeB Coated Magnets in Saliva Solution for Orthodontic Applications

Luigi Calabrese; Lucio Bonaccorsi; Chiara Borsellino; Angela Caprì; Francesca Fabiano; Edoardo Proverbio

doi:10.4028/www.scientific.net/SSP.227.515

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Electrochemical Impedance Spectroscopy Behaviour of NdFeB Coated Magnets in Saliva Solution for Orthodontic Applications

Abstract:

In this work the assessment of the corrosion performances in saliva solution of NdFeB magnets coated with silane layers was studied for its application in orthodontic brackets. The silane film, deposited by dip coating technique, has been prepared with varying dipping steps, with the purpose to identify the number of layers able to achieve an optimal protective action. Corrosion protection performance, during immersion in Fusayama synthetic saliva solution, was evaluated by means electrochemical impedance spectroscopy (EIS). The silane coatings evidenced good barrier properties resulting in an improvement of the anti-corrosion performances of the magnets. Better results were observed for samples with at least 15 layers of silane, that evidenced still acceptable protective action after three days of immersion in a Fusayama synthetic saliva solution.

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Periodical:

Solid State Phenomena (Volume 227)

Pages:

515-518

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.227.515

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Online since:

January 2015

Authors:

Luigi Calabrese*, Lucio Bonaccorsi, Chiara Borsellino, Angela Caprì, Francesca Fabiano, Edoardo Proverbio

Keywords:

Coating, Magnets, Orthodontic, Silane

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