TY - JOUR AU - Bogoly, Levente AU - Mende, Tamás AU - Fegyverneki, György AU - Gyarmati, Gábor TI - Eltérő kezelősók és Al-5%Ti-1%B előötvözet-adagolás olvadékminőségre gyakorolt hatásának összehasonlító vizsgálata EN AC-45500 ötvözet esetén JF - BÁNYÁSZATI ÉS KOHÁSZATI LAPOK (2023-) J2 - BKL VL - 157 PY - 2024 IS - 1 SP - 2 EP - 11 PG - 10 SN - 2498-9322 UR - https://m2.mtmt.hu/api/publication/34855918 ID - 34855918 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Zhang, Huaqing AU - Du, Yong AU - Kaptay, György TI - An Improved Model for Molar Volumes of Ti-Carbide, Ti-Nitride and Ti-Carbo-Nitride JF - METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE J2 - METALL MATER TRANS A PY - 2024 SN - 1073-5623 DO - 10.1007/s11661-024-07395-8 UR - https://m2.mtmt.hu/api/publication/34829397 ID - 34829397 AB - Molar volume of titanium carbonitride is modelled as function of composition and temperature by two-sublattice model Ti 1 (C, N, Va) 1 . Deviations from the ideal solution model in Ti–TiX sections were modelled by regular solution model between X atoms and vacancies in the (X, Va) sublattice. The combined binary models can describe molar volumes of ternary Ti carbonitrides reasonably well without introducing any ternary parameters, proving a good physics behind the binary models. LA - English DB - MTMT ER - TY - JOUR AU - Abood, Tamara Wahid AU - Shabeeb, Kadhum M. AU - Alzubaydi, Aseel B. AU - Fal, Mokhatar AU - Lotaibi, Abdulrahman M. A AU - Lawal, Dahiru U. AU - Hernádi, Klára AU - Alsalhy, Qusay F. TI - Novel MXene/PVDF nanocomposite ultrafiltration membranes for optimized Eriochrome black T (azo dye) removal JF - DESALINATION AND WATER TREATMENT J2 - DESALIN WATER TREAT PY - 2024 SP - 100311 SN - 1944-3994 DO - 10.1016/j.dwt.2024.100311 UR - https://m2.mtmt.hu/api/publication/34826648 ID - 34826648 LA - English DB - MTMT ER - TY - CHAP AU - Lowe, Terry C. AU - Hirsch, Daniela P. AU - Dahl, Scott C. AU - Lowe, Beatrice L. AU - Hawkins, Clinton L. AU - Kailas, Naveen S. AU - Szűcs, Máté AU - Tóth, László TI - Quantifying Surface Topographies on Antimicrobial Copper T2 - TMS 2024 153rd Annual Meeting & Exhibition Supplemental Proceedings PB - Springer Nature Switzerland AG CY - Cham SN - 9783031503498 T3 - The Minerals, Metals & Materials Series, ISSN 2367-1181 PY - 2024 SP - 864 EP - 874 PG - 11 DO - 10.1007/978-3-031-50349-8_75 UR - https://m2.mtmt.hu/api/publication/34824730 ID - 34824730 LA - English DB - MTMT ER - TY - JOUR AU - Razzouk, Emel AU - Koncz-Horváth, Dániel AU - Török, Tamás TI - Microstructure Effects on Anodizing High-Silicon Aluminium Alloy AlSi12Cu1(Fe) under Various Surface Conditions and Power Modes JF - CRYSTALS J2 - CRYSTALS VL - 14 PY - 2024 IS - 4 SP - 352 EP - 366 PG - 15 SN - 2073-4352 DO - 10.3390/cryst14040352 UR - https://m2.mtmt.hu/api/publication/34788000 ID - 34788000 AB - This study investigates the impact of the surface characteristics and the inner close-to-surface characteristics of die-cast Al-Si-Cu alloy on the anodizing process under steady-state voltage and current modes. Samples of industrial-pressure die-cast aluminium–silicon alloy AlSi12Cu1(Fe) underwent anodization in as-die-cast surface conditions and after surface-grinding operations with material removal of 0.1, 0.5, and 1 mm. After surface grinding operations, the anodic layer thickness was significantly greater when subjected to a steady-state voltage of 35 V compared to that formed under a steady-state voltage of 20 V, showing an increase in the range of 2 to 2.5 times more than the thickness at 20 V. Additionally, anodizing under steady-state current mode (1.6 A·dm−2) yielded thicker layers compared to steady-state voltage mode (35 V, 1.6 A·dm−2 max) across all surface states (as-cast, ground). SEM-EDS analysis with element mapping revealed the subsequent effects of element distribution on anodic layer growth and structure. Grinding prior to anodization resulted in larger cavity sizes and lengths, attributed to microstructural variations induced by grinding. Grinding also exposed areas with slower solidification rates, fostering a homogeneous Al phase that facilitated enhanced oxide growth. Moreover, the formation of oxide was directly correlated with the presence of alloying elements, particularly silicon particles, which influenced the presence of the unanodized aluminium regions. LA - English DB - MTMT ER - TY - JOUR AU - Nánai, Lilla AU - Németh, Zoltán AU - Kaptay, György AU - Hernádi, Klára TI - Experimental and theoretical aspects of the growth of vertically aligned CNTs by CCVD on AZO substrate JF - SCIENTIFIC REPORTS J2 - SCI REP VL - 14 PY - 2024 IS - 1 SN - 2045-2322 DO - 10.1038/s41598-024-57862-w UR - https://m2.mtmt.hu/api/publication/34762909 ID - 34762909 AB - An efficient and reproducible growth of vertically aligned carbon nanotubes by CCVD requires accurate and specific setting of the synthesis parameters and the properties of catalyst thin layers. In this work, the growth of vertically aligned carbon nanotubes onto AZO (= aluminum doped zinc oxide) glass substrate covered by Al 2 O 3 and Fe-Co catalyst layer system is presented. Investigation of the effect of catalyst composition and synthesis temperature on CVD growth revealed the optimum condition of the synthesis. The analysis of as-prepared samples by SEM, TEM and Raman spectroscopy was carried out to prove the structure and quality of carbon deposit. Theoretical considerations have supported speculative ideas about the role of the support layer, the transformation of the catalyst layer in the presence of hydrogen gas and the growth mechanism of carbon nanotubes. The mechanism of CNT growth is modelled and the order of magnitude of experimentally observed vertical linear growth rate of CNT (several nm/s) is reproduced. LA - English DB - MTMT ER - TY - JOUR AU - Alktranee, Mohammed AU - Al-Yasiri, Qudama AU - Shehab, Mohammed AU - Bencs, Péter AU - Németh, Zoltán AU - Hernádi, Klára TI - Experimental and numerical study of a photovoltaic/thermal system cooled by metal oxide nanofluids JF - ALEXANDRIA ENGINEERING JOURNAL J2 - ALEX ENG J VL - 94 PY - 2024 SP - 55 EP - 67 PG - 13 SN - 1110-0168 DO - 10.1016/j.aej.2024.03.050 UR - https://m2.mtmt.hu/api/publication/34753277 ID - 34753277 LA - English DB - MTMT ER - TY - JOUR AU - Nánai, Lilla AU - Czagány, Máté AU - Hernádi, Klára TI - Effects of CCVD parameters on the growth of VACNT over AZO substrate JF - CERAMICS INTERNATIONAL J2 - CERAM INT VL - 50 PY - 2024 IS - 11 SP - 749 EP - 757 PG - 8 SN - 0272-8842 DO - 10.1016/j.ceramint.2024.03.200 UR - https://m2.mtmt.hu/api/publication/34751681 ID - 34751681 LA - English DB - MTMT ER - TY - JOUR AU - Roósz, András AU - Rónaföldi, Arnold AU - Kissné Svéda, Mária AU - Veres, Zsolt TI - The Angular Velocity as a Function of the Radius in Molten Ga75In25 Alloy Stirred Using a Rotation Magnetic Field JF - METALS J2 - METALS-BASEL VL - 14 PY - 2024 IS - 3 PG - 20 SN - 2075-4701 DO - 10.3390/met14030368 UR - https://m2.mtmt.hu/api/publication/34751010 ID - 34751010 LA - English DB - MTMT ER - TY - JOUR AU - Kaptay, György TI - Electrochemical diagrams showing equilibrium cathodic phases and their compositions as function of electrolyte composition and type of alloy phase diagram JF - ELECTROCHIMICA ACTA J2 - ELECTROCHIM ACTA VL - 484 PY - 2024 SN - 0013-4686 DO - 10.1016/j.electacta.2024.144002 UR - https://m2.mtmt.hu/api/publication/34738644 ID - 34738644 AB - In this paper the dependence of the elemental and phase compositions of the binary A-B cathodic deposits are computed by constructing “Electrochemical Diagrams”, abbreviated as ECDs, which potentially have a high practical significance. An ECD shows phases and compositions of cathodic alloy products as function of electrolyte composition at fixed temperature, pressure and at low current density upon galvano-static electrochemical co-deposition of components A-B from the same electrolyte on an inert cathode. The following rules are established here to construct the ECDs for binary A-B alloys: i). among all possible cathodic phases the one will be electrodeposited that provides the least negative cathodic deposition potential, ii). two or three (but not four or more) phases can be co-deposited on the cathode if their equilibrium cathodic potentials are equal and are the least negative among all possible cathodic phases, iii). the equilibrium compositions of solid and liquid A-B alloys that form on the cathode can be found from the condition of equality of the partial equilibrium cathodic potentials of components A and B. Based on the above three rules, ECDs are constructed for some basic types of binary equilibrium alloy phase diagrams with the composition of the alloy on its y-axes as function of the ionic composition of the electrolyte on its x-axes. In all cases the clear connection is shown between the ECDs and their corresponding alloy phase diagrams. The following geometric features are established for ECDs: i). solution phases are characterized by continuous curves, ii). phases of fixed compositions are characterized by horizontal lines, iii). two-phase mixtures are characterized by vertical lines, iv). three-phase equilibria are characterized by single points along the vertical lines corresponding to the two-phase equilibria of the parent phases of the third phase. It is shown that the restricted phase rule of Gibbs (= the maximum number of coexisting phases = the number of independent components + 1) is valid also for the ECDs. As examples, ECDs are calculated for the Ni-Co system and for the Ti-B system and good agreement is found between these calculated diagrams and the experimental data. LA - English DB - MTMT ER -