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Electrochemical behaviour in synthetic saliva of silane coated Ni/Cu/Ni Nd‐Fe‐B magnet for dentistry applications
Author(s) -
Calabrese L.,
Caprì A.,
Fabiano F.,
Bonaccorsi L.,
Borsellino C.,
Proverbio E.
Publication year - 2016
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.201508508
Subject(s) - silane , materials science , dielectric spectroscopy , corrosion , electrochemistry , magnet , nuclear chemistry , coating , metallurgy , chemical engineering , polarization (electrochemistry) , composite material , chemistry , electrode , physics , quantum mechanics , engineering
In this work the electrochemical behaviour in synthetic saliva of silane coated Ni/Cu/Ni Nd‐Fe‐B magnets for dentistry applications was assessed. A protective multilayer of N‐propyl‐trimethoxy‐silane was deposited by dip‐coating onto Ni/Cu/Ni Nd‐Fe‐B magnets. The corrosion process of the silanised magnets was experimentally studied by polarization and electrochemical impedance spectroscopy tests performed at increasing immersion time in synthetic saliva solution. The Ni/Cu/Ni plated cover is not able to provide good barrier protection in this electrolytic media, while an additional three‐layer silane film guarantees better anti‐corrosion properties and durability in synthetic saliva solution.

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