A5087764963- Metallurgical and Alloy Processes
- Intermetallics and Advanced Alloy Properties
- Electronic Packaging and Soldering Technologies
- Thermodynamic and Structural Properties of Metals and Alloys
- nanoparticles nucleation surface interactions
- Advanced Thermoelectric Materials and Devices
- Metallurgical Processes and Thermodynamics
- Chalcogenide Semiconductor Thin Films
- Solidification and crystal growth phenomena
- Material Properties and Applications
- Chemical Thermodynamics and Molecular Structure
- Rare-earth and actinide compounds
- Heusler alloys: electronic and magnetic properties
- Microstructure and Mechanical Properties of Steels
- High Temperature Alloys and Creep
- Aluminum Alloy Microstructure Properties
- Surface and Thin Film Phenomena
- Advanced materials and composites
- Metallic Glasses and Amorphous Alloys
- Chemical and Physical Properties of Materials
- Semiconductor materials and interfaces
- Aluminum Alloys Composites Properties
- Shape Memory Alloy Transformations
- Hydrogen Storage and Materials
- Modeling and Simulation Systems
Czech Academy of Sciences, Institute of Physics of Materials
2015-2024
Czech Technical University in Prague
2023
Czech Academy of Sciences
2007-2015
VSB - Technical University of Ostrava
2015
Masaryk University
2005-2006
Abstract The phase diagram of the Al-Cu binary system was reinvestigated experimentally. current study designed to contribute a better description those parts which are disputed in scientific literature, and addition, equilibria at 300 °C. melting behavior θ-phase confirmed be peritectic. A metastable congruent solidification observed from microstructural examination as-cast samples. location liquidus curve this region more accurately defined using DSC measurements taken slow-heating rates...
SnAg nanoparticles (SnAg NPs) were prepared by wet synthesis. The chemical composition of the NPs was obtained inductively coupled plasma - mass spectrometry. fine powder samples characterized electron microscopic technique (SEM) and thermal analysis (DSC). with different size obtained. dependent melting point depression (MPD) determined experimentally. phase diagram alloy also calculated using CALPHAD method, which has been extended to describe surface energy nanoparticles. same approach...
We have performed a quantum-mechanical study of series stoichiometric Ni2MnSn structures focusing on pressure-induced changes in their magnetic properties. Motivated by the facts that (i) our calculations give total moment defect-free higher than experimental value 12.8% and (ii) state is predicted to be more sensitive hydrostatic pressures seen measurements, focused role point defects, particular Mn-Ni, Mn-Sn Ni-Sn swaps Ni2MnSn. For most defect types we also compared states with both...
A method for modelling of size-dependent phase diagrams was developed by combining the semiempirical CALPHAD and ab initio calculations surface stresses intermetallic phases. novel approach devised calculation energy, free systematic errors from selection different parameters software (e.g. number k-points) handling layered structures off-stoichiometric slabs. Our allows determination complex systems with phases, which not possible up to now. The verified diagram Ni-Sn system basic...
The current state of thermodynamic modelling in the field high-temperature lead-free soldering is presented. A consistent database, containing 18 elements (Ag, Al, Au, Bi, Co, Cu, Ga, Ge, Mg, Ni, P, Pb, Pd, Sb, Sn, Ti and Zn) has been created. data for most important binary selected ternary systems were checked included into database. database was tested using major commercial software packages. Such reliable sophisticated coupled to databases are necessary prerequisites application...
The COST 531 [1] project runt in the years 2002-2007, and dealt with materials suitable for lead-free soldering. main aim was to increase basic knowledge on possible alloy systems that were used or planned be as solder offer scientific information about these order replace currently lead-containing solders. databases of thermodynamic properties are one expected results features database, allowing model phase diagrams multicomponent systems, described following paper.
The phase equilibria of the ternary system In-Ni-Sn were investigated experimentally at 700 °C using X-ray diffraction (XRD) and scanning electron microscopy (SEM) including micro probe analysis (EMPA) energy dispersive spectroscopy (EDX). A corresponding isothermal section was established based on these results. This particular temperature chosen because it allowed obtaining reliable results within reasonable time. existence InNi
The binary Pd‐Zn system was assessed in the scope of this paper. experimental data from literature were used for assessment, together with our own obtained by SEM‐EDS analysis and DTA. paper is focused particularly on system, but Pd‐Sn Sn‐Zn systems are also analysed Finally, first prediction isothermal sections ternary Pd‐Sn‐Zn made.