Study of the simultaneous effect of pulse current parameters and organic additives on the electrolytic deposition of Ni-Matrix/ZrO2 nanocomposite coatings.

Angeliki, Nikolaou; Νικολάου, Αγγελική

dc.contributor.author	Angeliki, Nikolaou	en
dc.contributor.author	Νικολάου, Αγγελική	el
dc.date.accessioned	2025-01-08T09:25:20Z
dc.date.available	2025-01-08T09:25:20Z
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/60631
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.28327
dc.rights	Default License
dc.subject	Electroplating	en
dc.subject	Zirconia	en
dc.subject	Nanocomposite electrodeposition	en
dc.subject	Nanocomposite coatings	en
dc.subject	Nanoparticles	en
dc.title	Study of the simultaneous effect of pulse current parameters and organic additives on the electrolytic deposition of Ni-Matrix/ZrO2 nanocomposite coatings.	en
heal.type	masterThesis	el
heal.classification	Materials Science, Electrochemistry	en
heal.language	en	el
heal.access	free	el
heal.recordProvider	ntua	el
heal.publicationDate	2024-03
heal.abstract	This master's thesis is dedicated to exploring the effects of pulse current parameters, organic additives, and their combined effects on the electrolytic deposition process, with a specific focus on the development of Ni-Matrix/ZrO2 nanocomposite coatings. The study encompasses a comprehensive investigation involving 27 meticulously prepared samples, each meticulously crafted to encompass a broad spectrum of experimental conditions. Central to this investigation is the utilization of 2-butyne-1,4-diol as the primary brightener (organic additive), accompanied by the application of both pulse and direct current methodologies to elucidate their distinct influences on coating formation and properties. In this thesis, the effect of organic additives, type of current and type of nanoparticles are identified as primary variables controlling the metal crystallization and coatings properties. The experimental design is underpinned by attention to detail and methodological precision. Parameters such as pH, current density, stirring rate, and temperature are controlled and maintained at consistent levels throughout the duration of the study, ensuring reliability and reproducibility of results. By adhering to rigorous experimental protocols, this research aims to provide comprehensive insights into the nuanced interactions between key process variables and their cumulative impact on coating morphology, structure, and performance. The structural and surface properties of the coatings are characterized using a diverse array of analytical techniques, including scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), and surface roughness testing. These techniques afford a detailed understanding of the microstructural evolution, phase composition, and surface topography of the deposited coatings, enabling correlations to be drawn between process parameters and observed material properties. In addition to structural characterization, the mechanical properties of the coatings are assessed through Vickers microhardness measurements. By quantifying the mechanical response of the coatings to applied loads, valuable insights are gained into their hardness, durability, and resistance to deformation, thereby informing potential applications in diverse engineering contexts. Through this multidisciplinary approach, this research endeavors to advance our fundamental understanding of electrolytic deposition processes and pave the way for the development of tailored Ni-Matrix/ZrO2 nanocomposite coatings with enhanced performance characteristics. By elucidating the complex relationships between pulse current parameters, organic additives, and coating properties, this study aims to contribute to the ongoing discourse surrounding surface engineering and materials science, ultimately facilitating the realization of innovative solutions for a broad spectrum of industrial applications. In summary, this master's thesis represents a comprehensive exploration of the simultaneous effects of pulse current parameters and organic additives on the electrolytic deposition of Ni-Matrix/ZrO2 nanocomposite coatings. The main objective of this work is to identify the electrocrystallization interactions in the production of Ni-Matrix/ZrO2 nanocomposites. A series of experiments are designed to isolate single variables and identify the controlling parameters of these interactions and their impact on the final properties. Through meticulous experimentation, rigorous analysis, and systematic characterization, this research endeavors to expand the frontiers of knowledge in the field of surface engineering and catalyze advancements in materials science and technology.	en
heal.advisorName	Kollia, Constantina	en
heal.committeeMemberName	Kollia, Constantina	en
heal.committeeMemberName	Manolakos, Dimitrios	en
heal.committeeMemberName	Kordatos, Konstantinos	en
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Χημικών Μηχανικών. Τομέας Χημικών Επιστημών (I). Εργαστήριο Γενικής Χημείας	el
heal.academicPublisherID	ntua	el
heal.numberOfPages	138 σ.	el
heal.fullTextAvailability	false