Open Access Conference Proceedings

Abstract: The improvement of surface quality in difficult to cut materials is critically important for enhancing service life. Plasma electrolytic polishing (PeP) is a promising surface finishing technology that provides high quality and eco-friendly smoothing of metal surfaces. [..] Read more

Abstract: Although CoCrFeNi high-entropy alloy (HEA) exhibits excellent ductility due to its face-centered cubic (FCC) crystal structure, its relatively low strength limits its applicability in certain industrial applications. To enhance its bulk mechanical performance, alloying additions can be introduced, while various surface modification techniques can be employed to improve its surface properties. [..] Read more

Abstract: Electromagnetic interference (EMI) poses a significant threat to the operational stability and reliability of modern electronic and communication systems. The increasing integration density of electronic components, particularly in aerospace, defense, and portable technologies, necessitates the development of lightweight, mechanically robust, and highly efficient shielding materials as alternatives to conventional bulk metals. In this study, three-dimensional (3D) printed Polylactic Acid (PLA) and Polyethylene Terephthalate Glycol (PETG) polymers were metallized via an electroless plating process to enhance their electromagnetic shielding effectiveness (SE). [..] Read more

Abstract: The work reviews phase evolution, mechanical, electrical, thermal and tribological properties of NbMoTaW100-z(CN)z coatings deposited using reactive DC magnetron co-sputtering. The concentrations of the metals were not equimolar, therefore, the resulting material was attributed to the compositionally complex compounds instead of high-entropy stabilized ceramics. [..] Read more

Abstract: Thermal energy storage (TES) systems used in industrial applications, such as power plants, must store large amounts of thermal energy. Meeting demands for high heat capacity, low thermal diffusivity, and structural stability at elevated temperatures requires selecting optimal nanostructures. [..] Read more

Abstract: Bioresorbable metallic alloys represent a significant advancement in the development of temporary biomedical implants, offering a favorable balance between biocompatibility and controlled degradation. This study investigates the impact of a two-step equal-channel angular pressing (ECAP) processing route on the performance of a promising biodegradable alloy. [..] Read more

Abstract: This study deals with the development and characterization of FeSi-NiAl-based composite materials, consisting of NiAl matrix and FeSi hardening phase, representing a new generation of tool materials. These composites can compete with conventional materials, such as cemented carbides and high-speed steels, which contain tungsten and cobalt - raw materials classified as critical by the European Union and economically burdened by the current geopolitical situation. [..] Read more

Abstract: Low alloyed 1XXX series aluminum alloys are widely used due to their excellent electrical and thermal conductivity, high corrosion resistance, and superior formability. However, their relatively low mechanical strength limits their applicability in environments involving elevated temperatures. [..] Read more

Abstract: This study reports on the characterization and synthesis of the 2D carbon-based materials. In here, Ti, Si and graphite are used as starting materials. [..] Read more

Abstract: The LaNi5 compound is a prototypical hydrogen-storage material intended for future energy applications. Some of its properties have not been sufficiently studied so far and some critically important data is missing. [..] Read more

Abstract: In recent years, wastes generated during copper smelting have attracted growing attention not only as an environmental issue but also as a potential secondary source of economically and strategically valuable elements. Lead-bismuth sludge formed during wet gas cleaning is a chemically complex polymetallic material. [..] Read more

Abstract: The intermetallic phase LaNi5 is known as a material for reversible hydrogen storage due to its suitable thermodynamic properties, and relatively fast kinetics of hydrogen absorption and desorption with the formation of LaNi5H7 hydride. This work focuses on the synthesis and characterization of a modified LaNi5 phase with the addition of indium. [..] Read more

Abstract: Additive manufacturing (AM) has introduced a practical route to fabricate complex, patient-specific metallic implants with controlled architectures that are difficult to achieve through conventional processing. Titanium alloys, in particular, remain central to biomedical applications because they combine high specific strength, corrosion resistance, and biological compatibility. [..] Read more

Abstract: A composite chiller consisting of graphite foam infiltrated with pure zinc as a phase change material (PCM) and enclosed within a steel container was used to enhance heat transfer and accelerate the solidification of an Al-4.5 wt% Cu alloy. Cooling performance was evaluated using numerical simulation based on temperature-time diagrams, along with calculations of thermal gradient (G) and growth rate of the solidification front (R). [..] Read more

Abstract: The Ausmelt TSL pyrometallurgical process is efficient, environmentally friendly and flexible for processing a wide range of non-ferrous metal concentrates and secondary raw materials. The pursuit of environmentally friendly technologies and greater opportunities for processing a wide range of concentrates and various secondary materials has made this technological process the main one for lead smelting in recent decades. As a model scheme, the one of KCM-AD, Plovdiv, Bulgaria - a major lead producer for Southeastern Europe - was used. [..] Read more

Abstract: Zinc alloys are recognised for their excellent biocompatibility and favourable corrosion resistance, making them suitable candidates for bioabsorbable implants. The major challenge concerning the utilisation of zinc as a biodegradable material is, however, its unsatisfactory mechanical strength. [..] Read more

Abstract: This review combines research on chemical processes involved in calcium carbide production using low-rank coal as a reductant to address gaps in understanding reaction mechanisms, process efficiency, and raw material utilization. The review aimed to evaluate reaction pathways, benchmark energy consumption, assess coal properties and preparation effects, identify additives enhancing yield and purity, and compare thermodynamic and kinetic models. [..] Read more

Abstract: This study presents "WeldTrack: Intelligent Guidance System," developed to minimize operator-induced errors in manual laser welding operations and to protect device longevity against the risk of "back-reflection," a critical issue particularly in highly reflective metals such as aluminum. The system architecture consists of two main units communicating via Wi-Fi. [..] Read more

Abstract: The increasing demand for critical metals required for modern technologies has led to recycling waste or any secondary sources containing valuable metals in the present case germanium. Copper slags are generally rich in iron and silicate phases in form of fayalite, which contains trace metals of germanium, gallium, zinc and other critical elements that can be liberated. [..] Read more

Abstract: Carbon emission has been at the center for searching alternative solutions to combat the carbon footprint in the last years. The pyrometallurgical industry is a major contributor, this has opened a way for carbothermic reduction innovation. [..] Read more