Corrosion, Mechanical and Catalytic Properties of Coatings Based on FeNiCrWMoCoCB Metallic Glasses


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Abstract

This work is devoted to the deposition of coatings based on FeNiCrWMoCoCB metallic glasses on a surface made of 35 steel; the deposition is carried out by electrospark machining in a medium of granules of metals and alloys used as electrode materials. X-ray diffraction analysis showed that an amorphous phase is predominant in the composition of coatings. At a temperature of 1100°C, the amorphous phase crystallizes in borocarbide of the M23(C,B)6 type, an intermetallic of iron, nickel, and chromium, and αFe phase. Polarization tests of the coating in the NaCl solution (3.5%) demonstrate a lower corrosion current and a higher polarization resistance compared with the 35 steel. It is found during the study of a heat resistance at 600, 700, and 800°C that the use of the FeNiCrWMoCoCB coating on the 35 steel enhances a resistance of its surface to a high-temperature gas corrosion in 8.7, 6.3, and 3.0 times, respectively (the experiment time was 40 h). The wear resistance of the FeNiCrWMoCoCB coatings in a dry sliding wear mode at loadings of 10 and 25 N was 2.2 and 1.7 times higher than for the 35 steel. The samples with the coatings based on the FeNiCrWMoCoCB metallic glasses show a high catalytic activity for a decomposition of a methylene blue solution as at the presence of hydrogen peroxide, as well as without it.

About the authors

A. A. Burkov

Institute of Materials Science, Khabarovsk Scientific Center, Far East Branch, Russian Academy of Sciences

Author for correspondence.
Email: burkovalex@mail.ru
Russian Federation, Khabarovsk, 680042

A. V. Zaitsev

Institute of Materials Science, Khabarovsk Scientific Center, Far East Branch, Russian Academy of Sciences

Email: burkovalex@mail.ru
Russian Federation, Khabarovsk, 680042

A. V. Syui

Far Eastern State Transport University

Email: burkovalex@mail.ru
Russian Federation, Khabarovsk, 680021

E. R. Zaikova

Institute of Materials Science, Khabarovsk Scientific Center, Far East Branch, Russian Academy of Sciences

Email: burkovalex@mail.ru
Russian Federation, Khabarovsk, 680042

O. I. Kaminskii

Institute of Materials Science, Khabarovsk Scientific Center, Far East Branch, Russian Academy of Sciences

Email: burkovalex@mail.ru
Russian Federation, Khabarovsk, 680042

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