Explanipedia

Ytterbium-Modified Rapidly Solidified Mg-Zn-Ca Alloys: Improvements in Strength and Corrosion Resistance for Biodegradable Implant Applications Open

Zuzana Molčanová, Beáta Ballóková, Karel Saksl, Miroslav Džupon, Dóra Zalka , et al. · 2025

Biodegradable alloys are increasingly studied in medical research to find the best balance between mechanical performance and biocompatibility. Magnesium (Mg) alloys are particularly attractive because of their low density, good mechanical…

Room-Temperature Superplasticity in a Biodegradable Zn-0.1Mg Alloy Open

Karel Saksl, Róbert Kočiško, Patrik Petroušek, Miloš Matvija, Martin Fujda , et al. · 2025

Biodegradable zinc-based alloys have recently emerged as promising candidates for temporary biomedical implants due to their favorable biocompatibility, appropriate degradation rate, and relatively simple processing. In this study, the Zn-…

Significant Enhancement of Strength and Ductility in Bioresorbable Zn–0.1Mg Alloy via ECAP Processing Open

Iryna Cuperová, Martin Fujda, Róbert Kočiško, Patrik Petroušek, Zuzana Molčanová , et al. · 2025

Zinc (Zn)-based alloys are considered promising bioresorbable materials for intracorporeal implants due to their good biocompatibility and suitable degradation rate in physiological environments. However, their broader application is hinde…

Relaxation and Devitrification of Mg66Zn30Ca4 Metallic Glass Open

Karel Saksl, Juraj Ďurišin, Martin Fujda, Zuzana Molčanová, Beáta Ballóková , et al. · 2025

Mg66Zn30Ca4 metallic glass is a promising biodegradable material due to its high strength, corrosion resistance, and excellent glass-forming ability. In this study, we investigated its thermal stability, structural relaxation, and crystall…

Effect of mechanochemical milling on the properties of Ag₂O self-reducing pastes for conductive layers in flexible electronics Open

Alena Pietriková, Peter Provázek, Péter Lukács, Daniel Dzivy, Karel Saksl , et al. · 2025

This work investigates the production of conductive silver layers at low temperatures by the mechanochemical processing of silver oxide (Ag 2 O) particles. Using modified Ag 2 O particles in a planetary ball mill, a cost-effective method f…

Atomic structure and devitrification of the Mg82Ca8Au10 metallic glass Open

Zuzana Molčanová, Karel Saksl, Juraj Ďurišin, Š. Michalik, Beáta Ballóková , et al. · 2024

Short range order of a ternary Mg82Ca8Au10 biodegradable amorphous alloy was studied by combining diffraction datasets and Au L3 edge EXAFS data by the Reverse Monte Carlo simulation technique. It was found that while the Mg–Mg bond length…

Zirconium-Modified Medium-Entropy Alloy (TiVNb)85Cr15 for Hydrogen Storage Open

Karel Saksl, Miloš Matvija, Martin Fujda, Beáta Ballóková, Dagmara Varcholová , et al. · 2024

In this study, we investigate the effect of small amounts of zirconium alloying the medium-entropy alloy (TiVNb)85Cr15, a promising material for hydrogen storage. Alloys with 1, 4, and 7 at.% of Zr were prepared by arc melting and found to…

Effect of Multiple Doping Elements on Polarity Switching of Polycrystalline SnSe Semiconductor Open

František Mihok, Gabriela Hricková, Viktor Puchý, Juraj Szabó, Beáta Ballóková , et al. · 2024

Material selection for thermoelectric modules and generators presents a considerable challenge. In commercially available thermoelectric generators, alloys with a high percentage of doping element are used to achieve different semiconducto…

The Effect of Ge Doping on α-Ag2S’s Thermoelectric and Mechanical Properties Open

Gabriela Hricková, František Mihok, Zuzana Molčanová, Beáta Ballóková, Wanda Mamrilla , et al. · 2024

Thermoelectric materials are capable of generating electrical energy in response to a temperature gradient. Non-renewable energy resources are depleting, so the development of renewable energy sources that are environmentally sustainable i…

Polymer Conductive Paste Formulation by Modified Ag2O Particles Open

Peter Provázek, Alena Pietriková, Péter Lukács, Beáta Ballóková · 2024

This paper addresses the polymer conductive paste formulation based on modified silver oxide (Ag 2 O) particles. This paste is distinguished by the self-reduction of Ag 2 O particles to conductive Ag through a thermal process. It is suitab…

Demonstration of Sensitivity of the Total-Electron-Yield Extended X-ray Absorption Fine Structure Method on Plastic Deformation of the Surface Layer Open

Lenka Oroszová, Karel Saksl, Dávid Csík, Katarína Nigútová, Zuzana Molčanová , et al. · 2024

X-ray Absorption Fine Structure Spectroscopy (XAFS) has proven instrumental for the study of atomic-scale structures across diverse materials. This study conducts a meticulous comparative analysis between total electron yield (TEY) and abs…

The Influence of Manganese Addition on the Properties of Biodegradable Zinc-Manganese-Calcium Alloys Open

Wanda Mamrilla, Zuzana Molčanová, Beáta Ballóková, Miroslav Džupon, Róbert Džunda , et al. · 2023

This study focuses on the preparation and characterization of zinc-based alloys containing magnesium, calcium, and manganese. The alloys were prepared by the melting of pure elements, casting them into graphite molds, and thermo-mechanical…

Preparation and Basic Characterization of Novel Zinc-based Alloys for Intracorporeal Implants Open

Wanda Mamrilla, Zuzana Molčanová, Beáta Ballóková, Róbert Džunda, Karel Saksl · 2023

Zinc is considered to be a suitable element for the preparation of bioresorbable materials that can gradually degrade in the human body without the production of toxic compounds and undesirable hydrogen gas. Zn is characterized by a much l…

Residual stresses of explosively welded bimetal studied by hard X-ray diffraction Open

Zuzana Molčanová, Beáta Ballóková, Katarína Kušnírová, Lenka Oroszová Oroszová, Michael Gloc , et al. · 2023

Geothermal heat from the Earth`s crust is a source of natural and renewable energy. This energy can be extracted and used for generating electricity and heating of houses in the winter months. However, in order to extract energy from a wel…

The yttrium substitution impact on mechanical properties of biodegradable Mg66Zn30Ca4 alloy Open

Zuzana Molčanová, Beáta Ballóková, Wanda Miženková, Miroslav Džupon, Dóra Zalka , et al. · 2022

From the point of view of possible medical applications, biodegradable alloys belong to hot-topic materials.Many different systems are studied in this field, seeking a compromise between mechanical-physical properties vs biocompatibility.D…

Development and Testing of Copper Filters for Efficient Application in Half-Face Masks Open

Beáta Ballóková, Marian Lazăr, Natália Jasminská, Zuzana Molčanová, Š. Michalik , et al. · 2022

SARS-CoV-2 is the causative agent of severe acute respiratory diseases. Its main transmission pathway is through large and small respiratory droplets, as well as a direct and indirect contact. In this paper, we present the results of the d…

Graphene nanoplatelets reinforced aluminum alloy matrix composites produced by spark plasma sintering Open

Viktor Puchý, Mária Podobová, Róbert Džunda, Pavol Hvizdoš, Oksana Velgosová , et al. · 2021

The Influence of Laser Surface Remelting on the Tribological Behavior of the ECAP-Processed AZ61 Mg Alloy and AZ61–Al2O3 Metal Matrix Composite Open

Beáta Ballóková, Ladislav Falat, Viktor Puchý, Zuzana Molčanová, Michal Besterci , et al. · 2020

This paper deals with the tribological study of the laser remelted surfaces of the ECAP-processed AZ61 magnesium alloy and AZ61–Al2O3 metal matrix composite with 10 wt.% addition of Al2O3 nanoparticles. The study included the experimental …

Magnetic Characterization and Thermal Stability of Gd50Co48Fe2 Metallic Glass Open

Maksym Lisnichuk, Yu. Katuna, Karel Saksl, M. Fejerčák, Michaela Šulíková , et al. · 2020

Solid phase stability and magneto-caloric effect of a ternary Gd50Co48Fe2 amorphous as-spun ribbons was studied in this work.The magnetization curve was measured at temperature range from 200 to 360 K. Subsequently the isothermal magnetiza…

Effect of CNT on microstructure, dry sliding wear and compressive mechanical properties of AZ61 magnesium alloy Open

Song‐Jeng Huang, Aqeel Abbas, Beáta Ballóková · 2019

Atomic structure of Ca–Mg biodegradable metallic glass Open

Karel Saksl, Zuzana Molčanová, Juraj Ďurišin, P. Jóvári, Š. Michalik , et al. · 2019

Development of new biodegradable alloys for medical applications Open

Zuzana Molčanová, Beáta Ballóková, Juraj Ďurišin, K. Šuľová, Michaela Šulíková , et al. · 2019

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INFLUENCE OF TEMPERATURE AND STRAIN RATE ON SUPERPLASTICITY KINETICS OF COMPOSITE AZ61-F MAGNESIUM MATERIALS Open

Michal Besterci, Song‐Jeng Huang, Katarína Sülleiová, Beáta Ballóková · 2018

Micromechanisms of fracture of AZ61-F composites in the zone of quasi-superplastic deformation were analyzed and quantified in this work. Deformation of AZ61-F magnesium alloys with 1 wt.% of Al2O3 phase was tested at a temperature of 473 …

Mechanical Properties of Copper Processed by Equal Channel Angular Pressing Open

Katarína Sülleiová, Beáta Ballóková, Michal Besterci, Tibor Kvačkaj · 2017

The development of the nanostructure in commercial pure copper and the strength and ductility after severe plastic deformation (SPD) with the technology of equal channel angular pressing (ECAP) are analysed. Experimental results and analys…

Surface integrity of Mg-based nanocomposite produced by Abrasive Water Jet Machining (AWJM) Open

K. Bimla Mardi, Amit Rai Dixit, Ashis Mallick, Alokesh Pramanik, Beáta Ballóková , et al. · 2017

This paper investigates the influence of jet traverse speed on the surface integrity of 0.66 wt% Al2O3 nanoparticle reinforced metal matrix composite (MMC) generated by Abrasive Water Jet Machining (AWJM). Surface morphology, surface topog…

Fracture analysis of AZ6-F magnesium composite materials at quasi-superplastic state Open

Michal Besterci, Song‐Jeng Huang, Katarína Sülleiová, Beáta Ballóková, Oksana Velgosová · 2017

Micromechanisms of fracture of AZ61-F composites in the zone of quasi-superplastic deformation were analysed and quantified in this work.Deformation of AZ61-F magnesium alloys with 1 wt.% of Al2O3 phase was tested at a temperature of 473 K…

Micromechanisms of Fracture of Magnesium Based Composite After Superplastic Deformation Open

Beáta Ballóková, Katarína Sülleiová, Michal Besterci, Oksana Velgosová, Song‐Jeng Huang · 2016

The micromechanisms of fracture of AZ61 + 1 wt. % Al 2 O 3 composite in the zone of superplastic deformation was analysed and quantified in this work. The specimens were tested at temperature of 200°C at different strain rates. Changing th…

Superplastic Behaviour of AZ61-F Magnesium Composite Materials Open

Michal Besterci, Katarína Sülleiová, Oksana Velgosová, Beáta Ballóková, Song‐Jeng Huang · 2016

Deformation of AZ61-F magnesium alloys with 1 wt % of Al 2 O 3 phase was tested at different temperatures and different strain rates. It was shown that at temperatures 473–523 K and the highest strain rate applied from 1×10 –2 s –1 to 1×10…

Tribological behaviour and local mechanical properties of magnesium-alumina composites Open

Song‐Jeng Huang, P.-C. LIN, Beáta Ballóková, Pavol Hvizdoš, Michal Besterci · 2016

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