ВЛАСТИВОСТІ НІКЕЛЕВИХ ПОКРИТТІВ ЕЛЕКТРООСАДЖЕНИХ У МАГНІТНОМУ ПОЛІ НИЗЬКОЇ ІНДУКЦІЇ
PROPERTIES OF NICKEL DEPOSITS ELECTRODEPOSITED IN A LOW INDUCTION MAGNETIC FIELD
Сторінки: 136-140 . Номер: №5, 2023 (325) 
Автори:
Станіслав КОВАЛЬОВ
Український державний хіміко-технологічний університет
https://orcid.org/0000-0001-8839-2392
e-mail: sv_kovalyov@i.ua
Владислава МІЩЕНКО
Український державний хіміко-технологічний університет
https://orcid.org/0000-0002-1867-3874
e-mail: vlada@ua.fm
Олег ГІРІН
Український державний хіміко-технологічний університет
https://orcid.org/0000-0001-7712-2290
e-mail: girin@ua.fm
Stanislav KOVALYOV, Vladyslava MISHCHENKO, Oleg GIRIN
Ukrainian State University of Chemical Technology
DOI: https://www.doi.org/10.31891/2307-5732-2023-325-5-136-140
Анотація мовою оригіналу
Робота присвячена вивченню властивостей нікелевих покриттів, отриманих у магнітному полі низької індукції.
Ключові слова: електрокристалізація, нікелеві покриття, магнітне поле, мікротвердість.
Розширена анотація англійською мовою
The paper presents the results of research into the properties, phase composition, and morphology of nickel deposits obtained by electrocrystallization in a magnetic field of weak induction. Electrodeposition of nickel deposits was carried out on a copper base using a magnetic field of 0.0005 T. The stationary magnetic field was located perpendicular to the electrode surface. The deposit was obtained in an electrolyte with the composition: 0.64 M NiSO4 7H2O + 0.5 M NH4Cl + 0.49 M H3BO3. A current density was 3 A/dm2. The research was carried out using chronopotentiometry, scanning electron microscopy and X-ray phase analysis. The properties of the obtained deposits were studied by measuring reflectivity, microhardness and internal stresses. The studies conducted in the work prove that the weak-induction magnetic field applied in the electrolysis process affects the electrodeposition process and the morphology, structure, and properties of nickel deposits. When applying a magnetic field by induction of 0.0005 T, an increase in the overvoltage of nickel electrodeposition is observed. The morphology of the deposit changes when a magnetic field is applied. The use of a magnetic field during electrolysis allows obtaining a deposit with increased microhardness and gloss and reduced internal stresses. Electrodeposition conditions of nickel deposits are proposed: current density of 3 A/dm2 and magnetic field with induction of 0.0005 T. The use of a magnetic field makes it possible to exclude the use of surface-active substances and make the deposition process more technological.
Key words: electrocrystallization, nickel deposits, magnetic field, microhardness, internal stresses.
