Comparative Effects of Cold Plasma and Thermal Annealing on the Structural and Morphological Properties of Nickel and Iron Oxide Coatings

doi:10.26565/2312-4334-2026-2-23

Ая Джумаа Багдадський університет, Коледж наук для жінок, кафедра фізики, Багдад, Ірак https://orcid.org/0009-0008-4601-9686
Духа К. Харфеш Багдадський університет, Коледж наук для жінок, кафедра фізики, Багдад, Ірак https://orcid.org/0000-0003-0950-7804
А.Н. Ясуб Багдадський університет, Коледж наук для жінок, кафедра фізики, Багдад, Ірак https://orcid.org/0000-0002-0148-5500
Хамід Х. Мурбат Багдадський університет, Коледж наук для жінок, кафедра фізики, Багдад, Ірак

DOI: https://doi.org/10.26565/2312-4334-2026-2-23

Ключові слова: холодна плазма, DBD, плазмовий відпал, нікелеве покриття, оксид заліза, гематит, магнетит

Анотація

У цьому дослідженні всебічно досліджується та порівнюється вплив обробки холодною атмосферною плазмою (ХАТП) як потенційної альтернативи термічному відпалу на структурні та морфологічні властивості двох різних тонких плівок: нікелю (Ni) та оксиду заліза (FeₓOᵧ), обидві електрохімічно нанесені на підкладки ITO. Характеристика за допомогою рентгенівської дифракції (XRD) та атомно-силової мікроскопії (АСМ) показала, що природа матеріалу визначає його реакцію на постобробку. Для нікелю короткочасна обробка CAP (2,5-5 хв) оптимально покращувала кристалічність та гладкість поверхні за рахунок зменшення розміру зерен та шорсткості, тоді як триваліша обробка призводила до окислення та збільшення шорсткості. І навпаки, для оксиду заліза навіть короткочасна обробка CAP ініціювала перехід від монокристалічної до полікристалічної структури, утворюючи суміш фаз (Fe₃O₄, γ-Fe₂O₃). Найгладша поверхня оксиду заліза була досягнута після 5-10 хвилин CAP, а надмірна обробка (15 хв) спричиняла пошкодження поверхні. Термічний відпал виявився кращим для нікелю при 200℃, даючи найдрібніші зерна та найгладшу поверхню. Однак цього було недостатньо для оптимальної кристалізації оксиду заліза. Ця робота демонструє, що CAP є швидкою та енергоефективною альтернативою традиційному відпалу. Оптимальні параметри сильно залежать від специфіки матеріалу та мають вирішальне значення для створення функціональних покриттів у каталізі та сенсориці.

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