A5071697901- Advanced ceramic materials synthesis
- Advanced materials and composites
- Aluminum Alloys Composites Properties
- MXene and MAX Phase Materials
- Metal and Thin Film Mechanics
- Boron and Carbon Nanomaterials Research
- Advanced Surface Polishing Techniques
- Glass properties and applications
- Diamond and Carbon-based Materials Research
- Nuclear materials and radiation effects
- Graphene research and applications
- Thermal properties of materials
- Advanced machining processes and optimization
- Advanced Machining and Optimization Techniques
- Recycling and utilization of industrial and municipal waste in materials production
- Inorganic Chemistry and Materials
- Ferroelectric and Piezoelectric Materials
- Semiconductor materials and devices
- Magnesium Oxide Properties and Applications
- Bone Tissue Engineering Materials
- Microwave Dielectric Ceramics Synthesis
- Luminescence Properties of Advanced Materials
- Carbon Nanotubes in Composites
- Concrete and Cement Materials Research
- High Entropy Alloys Studies
Institute of Chemistry of the Slovak Academy of Sciences
2015-2024
Slovak Academy of Sciences
2015-2024
Institute of Inorganic Chemistry of the Slovak Academy of Sciences
2015-2024
Centre for Advanced Material Application of the Slovak Academy of Sciences
2022-2023
Northwestern Polytechnical University
2021
National Cheng Kung University
2014
Materials Science & Engineering
2014
American Ceramic Society
1995-2011
Czech Academy of Sciences, Institute of Inorganic Chemistry
2003-2006
Material Physics Center
2005
A (Hf-Ta-Zr-Nb-Ti)C high-entropy carbide was prepared by ball milling and a two-step Spark Plasma Sintering process, achieving single-phase ceramic sample with high relative density of 99.4 %. The wear resistance the measured tribology micro-scale mechanical behaviour studied nanoindentation on both non-deformed worn surfaces. Grains vicinity grain boundaries exhibited hardness values 38.5 ± 0.5 GPa 35.5 1.0 similar Young's moduli 562 11 547 16 GPa, respectively. dominant mechanism limited...
Different microstructures in Si 3 N 4 ceramics containing Y 2 O and Al as sintering additives were prepared by two‐step sintering. Pull‐out elastic bridging most frequently observed the toughening mechanisms samples with fine‐grained having needlelike β‐Si grains diameters of <1 μm. Crack deflection was main mechanism coarse‐grained >1 The values fracture toughness varied from 6.1 to 8.2 MPa·m 1/2 respect microstructural characteristics, characterized volume fraction their diameter.
This work verifies the applicability of two‐stage sintering as a means suppressing final stage grain growth submicrometer alumina. The first heating step should be short at relatively high‐temperature (1400°–1450°C) in order to close porosity without significant growth. second temperatures around 1150°C facilitates further densification with limited Fine‐grained alumina relative density 98.8% and size 0.9 μm was prepared by sintering. A standard process resulted ceramics identical 1.6 μm.