Anti-corrosion ceramic coatings on the surface of Nd-Fe-B repelling magnets

Taran, A. V.
Garkusha, I. E.
Taran, V. S.
Timoshenko, O. I.
Misiruk, I. O.
Skoblo, T. S.
Romaniuk, S. P.
Starikov, V. V.
Baturin, A. A.
Nikolaychuk, G. P.
Pyvovar, N. V.
Gnidenko, Yu. P.

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Publication date

January 2019

Publisher

National Science Center "Kharkov Institute of Physics and Technology"

Language

English

Abstract

The results of vacuum-arc deposition of thin ZrO₂coatings to protect the surface of Nd-Fe-B permanent magnets used as repelling devices in orthodontics are presented. The structure, phase composition and mechanical properties of zirconium dioxide films have been investigated by means of SEM, XRD, EDX, XRF and nanoindentation method. It was revealed the formation of polycrystalline ZrO₂ films of monoclinic modification with average grain size 25 nm. The influence of the ZrO₂ coating in terms of its barrier properties for corrosion in quasi-physiological 0.9 NaCl solution has been studied. Electrochemical measurements indicated good barrier properties of the coating on specimens in the physiological solution environment

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Anti-corrosion ceramic coatings on the surface of Nd-Fe-B repelling magnets

Abstract

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Anti-corrosion ceramic coatings on the surface of Nd-Fe-B repelling magnets

Abstract

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