KFU. Card publication. ELECTRODEPOSITION OF ALLOYS FROM AQUEOUS SOLUTIONS OF HETERONUCLEAR COMPLEXES

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FEDERAL UNIVERSITY

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ELECTRODEPOSITION OF ALLOYS FROM AQUEOUS SOLUTIONS OF HETERONUCLEAR COMPLEXES

Form of presentation

Conference proceedings in Russian journals and collections

Year of publication

2024

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Authors, employees of KFU

Ivanova Valentina Yurevna, author

Chevela Vladimir Vsevolodovich, author

Bibliographic description in the original language

Berezin N.B. / ELECTRODEPOSITION OF ALLOYS FROM AQUEOUS SOLUTIONS OF HETERONUCLEAR COMPLEXES / N. B. Berezin, V. V. Chevela, Zh. V. Mezhevich, V.Yu. Ivanova / KhKhII MENDELEEV CONGRESS ON GENERAL AND APPLIED CHEMISTRY. - Federal Territory “Sirius”, Russia, 2024. - T. 6. - C. 97.

Annotation

ÕÕII MENDELEEV CONGRESS ON GENERAL AND APPLIED CHEMISTRY

Keywords

zinc (II), chromium (III), nickel(II), glycine, aqueus solution, heteronuclear complexes, electrochemical reduction, corrosion resistance

The name of the journal

ÕÕII MENDELEEV CONGRESS ON GENERAL AND APPLIED CHEMISTRY

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=305477&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Ivanova Valentina Yurevna	ru_RU
dc.contributor.author	Chevela Vladimir Vsevolodovich	ru_RU
dc.date.accessioned	2024-01-01T00:00:00Z	ru_RU
dc.date.available	2024-01-01T00:00:00Z	ru_RU
dc.date.issued	2024	ru_RU
dc.identifier.citation	Berezin N.B. / ELECTRODEPOSITION OF ALLOYS FROM AQUEOUS SOLUTIONS OF HETERONUCLEAR COMPLEXES / N. B. Berezin, V. V. Chevela, Zh. V. Mezhevich, V.Yu. Ivanova / ÕÕII MENDELEEV CONGRESS ON GENERAL AND APPLIED CHEMISTRY. - Federal Territory “Sirius”, Russia, 2024. - T. 6. - C. 97.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=305477&p_lang=2	ru_RU
dc.description.abstract	ÕÕII MENDELEEV CONGRESS ON GENERAL AND APPLIED CHEMISTRY	ru_RU
dc.description.abstract	The aim of the work is to obtain data on the role of heteronuclear complexes and their electrochemical behavior in the production of alloys and corresponding coatings. The processes of complexation in the following systems have been studied: zinc (II)-chromium (III)-nickel(II)-glycine- water. Heteronuclear complexes have been established CrNiZn(HGl)4Gl4 3+ (lgK =1.01? 0.32), the constants of formation and the proportion of their accumulation depending on the pH. The processes of complexation in the following systems have been studied: zinc (II)-chromium(III)-Co(II)-glycine- water. The compositions of heteronuclear compounds, the proportions of their accumulation and the constants of formation have been established: CrCoZn(HGly)5Gly3 4+ (lgK= 2,31?0,01); CrCoZn(HGly)3Gly5 2+ (lgK=-1,36?0,05) è CrCoZn(HGly)2Gly6 + (lgK=-4,23?0,09). By the method of removing polarization curves, the possibility of convergence of the potentials of the joint electrochemical reduction of metal ions in a heteronuclear compound is shown. As a theoretical justification for the convergence of electrode recovery potentials, some considerations are expressed, which are currently being confirmed. Thus, when filling molecular orbitals with electrons in a heteronuclear molecule, the orbital of a more electronegative atom makes a greater contribution to the binding orbital, and the orbital of a less negative atom makes a greater contribution to the loosening orbital, which reduces the overvoltage of the reduction of a more electronegative metal. In addition, an increase in the effective radius of complex heteronuclear ions in comparison with mononuclear compounds reduces the activation energy of their reduction. The elemental composition of the studied alloy sediments was determined by X-ray fluorescence analysis. It is shown that the alloy contains zinc, chromium, nickel, iron and manganese, while the other contains zinc, chromium, cobalt, iron and manganese with different ratios. Electrochemical measurements and determination of the mass index indicate a higher corrosion resistance of the coatings obtained in comparison with zinc coatings.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	zinc (II)	ru_RU
dc.subject	chromium (III)	ru_RU
dc.subject	nickel(II)	ru_RU
dc.subject	glycine	ru_RU
dc.subject	aqueus solution	ru_RU
dc.subject	heteronuclear complexes	ru_RU
dc.subject	electrochemical reduction	ru_RU
dc.subject	corrosion resistance	ru_RU
dc.title	ELECTRODEPOSITION OF ALLOYS FROM AQUEOUS SOLUTIONS OF HETERONUCLEAR COMPLEXES	ru_RU
dc.type	Conference proceedings in Russian journals and collections	ru_RU