A5075020739- High-Temperature Coating Behaviors
- Advanced materials and composites
- Aluminum Alloys Composites Properties
- Advanced ceramic materials synthesis
- Muon and positron interactions and applications
- High Entropy Alloys Studies
- Metal and Thin Film Mechanics
- Magnesium Alloys: Properties and Applications
- Fusion materials and technologies
- Nuclear Materials and Properties
- Hydrogen Storage and Materials
- Catalytic Processes in Materials Science
- Intermetallics and Advanced Alloy Properties
- Aluminum Alloy Microstructure Properties
- ZnO doping and properties
- Recycling and utilization of industrial and municipal waste in materials production
- MXene and MAX Phase Materials
- Copper Interconnects and Reliability
- Metal Alloys Wear and Properties
- Microstructure and mechanical properties
- Titanium Alloys Microstructure and Properties
- Concrete and Cement Materials Research
- Microwave Dielectric Ceramics Synthesis
- Glass properties and applications
- Copper-based nanomaterials and applications
Charles University
2016-2025
Czech Academy of Sciences, Institute of Plasma Physics
2016-2024
Research and Testing Institute Plzen (Czechia)
2021
Czech Academy of Sciences
2021
University of West Bohemia
2019
Thanks to the low working temperature, less product size limitations and one order of magnitude higher deposition rates compared established additive manufacturing techniques, more attention has been brought potential cold spraying for . As a process dealing with deformation solid particles possibly leaving non-bonded interfaces causing work hardening, any optimization should (i) adjust spray parameters obtain high performance as-sprayed parts (ii) tune ductility internal stresses by...
Refractory high entropy alloys (HEA) are promising materials for temperature applications. This work presents investigations of the room tensile mechanical properties selected 3 and 4 elements medium (MEA) derived from HfNbTaTiZr system. Tensile testing was combined with fractographic microstructure analysis, using scanning electron microscope (SEM), wavelength dispersive spectroscope (WDS) X-Ray powder diffraction (XRD). The 5 element HEA alloy exhibits best combination strength elongation...
The current industry demand is to identify suitable alternatives the risk-of-supply prone and/or toxic, WC-Co and electrolytic hard chrome coatings without comprising desired wear performance. Therefore, compositions based on abundantly available elements (e.g. 'Fe') that possess adequate resistance are desirable from health, sustainability economic standpoints. In this work, crystalline Fe-based (Rockit-401) were processed using two different thermal spray routes, i.e. HVOF HVAF spraying....
Anatase TiO2 epitaxial films, with various thicknesses in the range from 100 to 500 nm, were grown on (001) LaAlO3 substrates by using pulsed laser deposition technique. Detailed investigations revealed that these anatase films exhibit ferromagnetic properties at room temperature. Variable energy positron annihilation spectroscopy was employed further understand microstructural characteristics of films. The spectroscopic analysis confirmed trapping occurs predominantly titanium vacancies all...
The microstructure and physical properties of reflective black aluminum were compared for layers different thicknesses deposited by magnetron sputtering on fused silica substrates.
High entropy alloys (HEA) have been one of the most attractive groups materials for researchers in last several years. Since HEAs are potential candidates many (e.g., refractory, cryogenic, medical) applications, their properties studied intensively. The frequent method HEA synthesis is arc or induction melting. Powder metallurgy a perspective technique alloy and therefore this work possibilities HfNbTaTiZr from powders were studied. Blended elemental sintered, hot isostatically pressed,...
Thermal spray is a versatile and cost-effective process to deposit wear corrosion resistant coatings. In this work, relatively new 'Fe-based' chemistry comprising boride carbides, explored as 'greener' alternative the expensive carcinogenic Co-based coatings mitigate wear. The emergent thermal of high-velocity air-fuel (HVAF) spraying was chosen Fe-based coatings, with oxy-fuel (HVOF) also being employed solely for purpose preliminary comparison. Detailed characterization HVOF HVAF sprayed...
Alloying of Mg with rare-earth (RE) elements proved to be beneficial for their in-vitro and in-vivo performance. In this work, a novel WN43 (Mg-4 wt%Y-3 wt%Nd) alloy well-defined composition was prepared, where, unlike in the commercial WE43 alloy, possibly harmful RE mischmetal substituted by less toxic Nd. A modern spark plasma sintering (SPS) technique used effectively produce samples from atomized powders. Sintering temperatures 400 °C – 550 holding times 3 or 10 min were well-compacted...
Thick NiTi shape memory alloy coatings (300–500 µm) were produced on graphite and AISI 304 substrates by radio frequency inductively-coupled plasma spray technology (RF-ICP) from feedstock powders. Their microstructure as well chemical phase composition characterized a methodology for the characterization of functional properties thick was developed. The exhibited cubic to monoclinic martensitic transformation effect. presented results prove that with thermomechanical can be easily...
This study is focused on the high-temperature corrosion evaluation of selected thermally sprayed coatings. NiCoCrAlYHfSi, NiCoCrAlY, NiCoCrAlTaReY, and CoCrAlYTaCSi coatings were base material 1.4923. used as a cost-efficient construction for components power equipment. All evaluated using HP/HVOF (High-Pressure/High-Velocity Oxygen Fuel) technology. High-temperature testing was performed in molten salt environment typical coal-fired boilers. exposed to 75% Na2SO4 25% NaCl at temperature 800...