A5031031642- Aluminum Alloys Composites Properties
- Metal and Thin Film Mechanics
- Metal Alloys Wear and Properties
- Microstructure and Mechanical Properties of Steels
- Electrocatalysts for Energy Conversion
- High Entropy Alloys Studies
- Advanced materials and composites
- Intermetallics and Advanced Alloy Properties
- Electrospun Nanofibers in Biomedical Applications
- Magnetic Properties and Applications
- Brake Systems and Friction Analysis
- Bone Tissue Engineering Materials
- Tribology and Wear Analysis
- Advanced ceramic materials synthesis
- Graphene and Nanomaterials Applications
- Layered Double Hydroxides Synthesis and Applications
- Surface Treatment and Coatings
- Magnetism in coordination complexes
- Titanium Alloys Microstructure and Properties
- Magnesium Alloys: Properties and Applications
- Magnesium Oxide Properties and Applications
- Orthopaedic implants and arthroplasty
- Hydrogen Storage and Materials
- Dental materials and restorations
- Supercapacitor Materials and Fabrication
Slovak Academy of Sciences
2018-2024
Institute of Materials Research of the Slovak Academy of Sciences
2018-2024
Czech Academy of Sciences, Institute of Macromolecular Chemistry
2021
Alumina (Al2O3) ceramics are interesting for low-weight and mid-high temperature applications. The addition of indium (In) graphene nanoplatelets (GNPs) can be used to reduce the density modify functional properties mechanical performance ceramic matrix. GNP In-reinforced Al2O3 matrix composites were prepared by spark plasma sintering (SPS) technique. Monolithic with either 5 or 10 wt.% In 2 GNPs (Al2O3-5In-2GNPs Al2O3-10In-2GNPs) compacted into disc-shaped samples. microstructure was...
In this study, we investigate the effect of small amounts zirconium alloying medium-entropy alloy (TiVNb)
Advances in biomedicine and development of modern technologies the last century have fostered improvement human longevity well-being. This progress simultaneously initiated need for novel biomaterials. Recently, degradable metallic biomaterials attracted serious attention scientific clinical research owing to their utilization some specific applications. work investigates effect polyethylene glycol (PEG) coating open-cell iron phosphorus/iron foams on microstructure corrosion properties. The...
Magnesium containing calcium silicates have recently shown that they are promising materials for various biomedical application with potential use in the form of bulk ceramic, composite scaffold or coatings on metallic substrates. A novel akermanite (AK; Ca2MgSi2O7)/dicalcium phosphate dihydrate (DCPD, CaHPO4. H2O) cement mixture was tested this work order to produce an alternative AK/DCPD biocement orthopedic applications. For comparison, we prepared two cements mixed 2.5 wt% NaH2PO4...
The TiB2-Ti composites with different concentrations of the Ti metallic second phase were prepared by spark plasma sintering.We investigated tribological properties TiB2 and materials ball-on-disc technique on HTT CSM tribometer under loads 1, 5, 10 N. wear tracks morphology was scanning electron confocal microscopy.The microstructures + consist a small-grained matrix relatively well dispersed particulate grains.The test results show that rate is gradually reduced over sliding speed range...
In this study, we fabricated Ti-Cu-based friction composites containing waste-metal (Ti, CuZn, stainless steel (SSt), MgAl), Al2O3 due to improving properties and its good compatibility with copper graphene nanoplatelets as reinforcement lubricant component, using planetary ball mill technique based on Spark Plasma Sintering (SPS). Understanding the wear behaviour of such engineered is essential improve their material design safety, these materials could have potential for use in public...
Abstract The newly designed multi-component (Fe–5 wt.% W–5 Mo–5 V–10 Cr–2.5 Ti) cast alloys, containing 0.7–1.1 C and 2.7–3.6 B, are intended for tribological applications. present work was aimed at studying the solidification sequence phase transformation temperature intervals of above-mentioned in order to elucidate their structural status further develop an appropriate heat treatment regime. For this purpose, Differential Scanning Calorimetry (DSC), microstructure observation...
Al2O3 with SiC, silver, and graphene nanoplatelets (GNPs) powder mixture was produced by ball milling using ethanol as dispersion media. The GNP-reinforced Al2O3-SiC-Ag ceramic–metal composites were densified spark plasma sintering technology (SPS). A homogeneous of GNPs in observed from the sintered samples, embedded between grains, which resulted increasing contact area. trans-granular mechanism crack propagation becomes increasingly dominant adding GNPs. hardness reaches 27 GPa, tested...
Nano/microfibers are already widely used as the reinforcements in various types of advanced composites for reducing weight, improving specific properties like hardness, fracture toughness and other mechanical ones. This contribution describes preparation titanium dioxide nano/microfibers by needle-less electrospinning, along with a detailed characterization obtained polycrystalline ceramics. For spinning solutions polyvinylpyrrolidone (PVP), isopropoxide (TTIP), ethanol acetic acid were...
Two different laser sources, namely the CO2 and continuous-wave thulium-doped fibre were individually used to study their effects on resulting changes in magnetic domains structure, coercivity, nanohardness of Fe-3.2Si grain-oriented electrical steel sheets.The with a constant power 30 W, frequency 1 kHz variable scribing speed range 10-50 mm s -1 was perform first series five treatments.Separately, second next treatments performed using operating at 2.4 2-10 W. The results showed that...
In present work, the Fe/Ti-15wt.%Cu-basedmetal matrix composites with three different Fe/Ti weight percent ratios (i.e., 40/25, 25/40, 5/60) and constant additions of non-metallic additives 5 wt.% graphite, wt.%SiC, 10 ZrO2) were investigated.An innovative ecologically friendly approach for laboratory preparation experimental composite materials was based on secondary utilization (recycling) waste Ti-chips (turnings) from conventional machining operations.The material mixtures fabrication...
The fiber laser scribing was performed on the surface of grain-oriented (GO) electrical steel, in order to investigate influence magnetic domains modification its losses components.The refinement carried out by beam continuous regime with power up 30 W, and two constant distances between neighbouring lines, respectively, 4 mm 10 mm.It shown that radiation induces thermal residual stresses at area interaction steel allow effectively refined domain structures, decrease hysteresis excess...
In this paper, microsecond pulsed fiber laser was used to study its effects on the resulting changes in magnetic domains structures, coercivity, and thermal stresses values area of interaction beam with surface high silicon non-oriented electrical steel sheets.The laminations for cores applications like motors, generators, ballasts are manufactured by punching, mechanical cutting, or cutting coils fully processed steels.The material close edge is essentially influenced these...
The possibility of reusing waste metals as alternative raw materials for producing friction applications was investigated.The Ti-matrix composites containing 40 wt.% Ti with fixed powder additions 25 wt.%Fe, 10 ZrO2, 5 wt.%SiC, graphene nanoplatelets (GNPs), and 15 metallic materials, namely MgAl, CuZn, Al, were prepared by mechanical milling mixing powders subsequent compactization using spark plasma sintering (SPS) technique in vacuum at process parameters 1000 • C 50 MPa min.As confirmed...