Anti-corrosion ceramic coatings on the surface of Nd-Fe-B repelling magnets
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Дата
2019
DOI
Науковий ступінь
Рівень дисертації
Шифр та назва спеціальності
Рада захисту
Установа захисту
Науковий керівник
Члени комітету
Видавець
National Science Center "Kharkov Institute of Physics and Technology"
Анотація
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.
Опис
Ключові слова
corrosion properties, permanent magnets, zirconium dioxide, energy dispersive, nanohardness
Бібліографічний опис
Anti-corrosion ceramic coatings on the surface of Nd-Fe-B repelling magnets / A. V. Taran [ et al.] // Problems of Atomic Science and Technology. Ser. : Plasma Physics (25). – 2019. – No. 1 (119). – P. 116-119.