THE STUDY OF ANTICORROSIVE COLD SPRAYED AL-ZN COATINGS FOR ND-FE-B PERMANENT MAGNETS

1 BELYAEV Igor
Co-authors:
2 FROLOV Kirill 2 STEPNOV Aleksey 3 BAZHENOV Viacheslav 1 KIREEV Andrey
Institutions:
1 Vladimir State University named after Alexander and Nikolay Stoletovs, Vladimir, Russia, belyaev-iv54@yandex.ru
2 Plasma Deposition Center, Co. Ltd., Vladimir, Russia, stepnov86@mail.ru
3 National University of Science and Technology MISiS, Moscow, Russia, v.e.bagenov@gmail.com
4 Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia, imet@ultra.imet.ac.ru
Conference:
29th International Conference on Metallurgy and Materials, Brno, Czech Republic, EU, May 20 - 22, 2020
Proceedings:
Proceedings 29th International Conference on Metallurgy and Materials
Pages:
827-832
ISBN:
978-80-87294-97-0
ISSN:
2694-9296
Published:
27th July 2020
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
435 views / 257 downloads
Abstract

Anticorrosive Al-Zn coatings applied on Nd-Fe-B permanent magnets were studied. The coatings were deposited on the surface of permanent magnets by high-speed cold spraying using various temperature conditions. The coatings were studied by optical metallography, scanning electron microscopy (SEM), quantitative X-ray diffraction analysis, and modern techniques for the estimation of adhesive strength of coatings. To determine the protective properties of Al-Zn coatings, salt spray corrosion tests were performed. The properties of the cold sprayed Al-Zn coatings are found to depend on the temperature of spraying. The coatings prepared at a spraying temperature of 200 °С exhibit the best results. The increase in the deposition temperature above 200 °С leads to the increase in the content of large corundum particles in the coatings, which result in the embrittlement of the coating material.

Keywords: Rare-earth magnets, anticorrosive coatings, cold spraying, temperature of spraying, properties of coating

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