Pavel Novák
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View article: Hydrogen interaction with vacancies in Al-2at.%Cu and its effect on natural aging
Hydrogen interaction with vacancies in Al-2at.%Cu and its effect on natural aging Open
In this study, we employed positron annihilation spectroscopy to investigate the interaction between hydrogen and quenched-in vacancies in a solution-treated Al-2at.%Cu alloy. We compared natural aging of a sample that was subjected to sol…
View article: Synthesis and properties of iron silicides
Synthesis and properties of iron silicides Open
View article: Influence of Deposition Parameters on the Building rate, In-Situ Formation of Austenite and Tensile Properties of SAF 2507 SDSS Fabricated by Directed Energy Deposition
Influence of Deposition Parameters on the Building rate, In-Situ Formation of Austenite and Tensile Properties of SAF 2507 SDSS Fabricated by Directed Energy Deposition Open
Industry applications of duplex stainless steels require a two-phase microstructure with a nearly balanced austenite-ferrite content to achieve good mechanical properties and good corrosion resistance. The most widespread additive manufact…
View article: Multi‐Talented Bismuthinidenes: Double C(<i>sp</i><sup>3</sup>)─I Bond Activation Using Single or Two Bi Centers.
Multi‐Talented Bismuthinidenes: Double C(<i>sp</i><sup>3</sup>)─I Bond Activation Using Single or Two Bi Centers. Open
The reaction of [2,6‐(DippN = CH) 2 C 6 H 3 ]Bi ( 1Dipp , Dipp = 2,6‐ i PrC 6 H 3 ) with CH 2 I 2 proceeded via double C─I bond activation yielding [2,6‐(DippN = CH) 2 C 6 H 3 ]Bi( μ ‐( Bi,N )─CH 2 )I 2 ( 3 ). By contrast, the reaction of …
View article: Activation energies of oxidation in air for SPS-sintered zirconium and its alloys
Activation energies of oxidation in air for SPS-sintered zirconium and its alloys Open
The research concerns the oxidation process of SPS-sintered zirconium-based materials. The sintered materials are characterized by residual porosity, which can affect the intensification of the oxidation process, compared to melted materia…
View article: Influence of directional solidification on the microstructure of in-situ FeSi–NiAl composites
Influence of directional solidification on the microstructure of in-situ FeSi–NiAl composites Open
View article: Evaluation of the Degradation of Combustion Engine Valves
Evaluation of the Degradation of Combustion Engine Valves Open
View article: The Role of Precipitates in Hydrogen Embrittlement of Precipitation-Hardenable Aluminum Alloys
The Role of Precipitates in Hydrogen Embrittlement of Precipitation-Hardenable Aluminum Alloys Open
This review examines hydrogen embrittlement (HE) in precipitation-hardenable aluminum alloys, focusing on the role of precipitates as hydrogen traps. It covers hydrogen entry mechanisms, the effects of microstructural features such as disl…
View article: Trade-Off Between Wear/Corrosion Performance and Mechanical Properties in D-AlNiCo Poly-Quasicrystals Through CNT Addition to the Microstructure
Trade-Off Between Wear/Corrosion Performance and Mechanical Properties in D-AlNiCo Poly-Quasicrystals Through CNT Addition to the Microstructure Open
An ultrafine-grained Al71Ni14.5Co14.5/CNT poly-quasicrystal (QC/CNT) composite was synthesized using spark plasma sintering of powder components developed through electroless Ni-P/CNT plating of Co particles and mechanical alloying. The pe…
View article: Assessment of Microstructural Features of a Silchrome 1 Exhaust Valve of a Harley-Davidson WLA World War II Motorcycle
Assessment of Microstructural Features of a Silchrome 1 Exhaust Valve of a Harley-Davidson WLA World War II Motorcycle Open
The paper aims at documenting the material employed in 1942 for the fabrication of an exhaust valve for a Harley-Davidson WLA/WLC motorcycle and assesses the material features with modern steel standard specifications and treatment. Facing…
View article: Microstructure and Properties of Natural Alloy Prepared by Aluminothermic Reduction of Deep-Sea Nodules and Processed by Rapid Solidification
Microstructure and Properties of Natural Alloy Prepared by Aluminothermic Reduction of Deep-Sea Nodules and Processed by Rapid Solidification Open
This paper explores the investigation of a natural alloy processed using the rapid solidification tech-nique. The study involves the reduction of manganese nodules through aluminothermy with a 20 wt. % excess of aluminum, followed by furth…
View article: How to Determine Possible Interactions of Silicide and Aluminide in Preparation of Composites
How to Determine Possible Interactions of Silicide and Aluminide in Preparation of Composites Open
Silicide - aluminide composites could be considered as potential tool materials, because of high wear resistance and thermal stability. Recently, the alloys based on iron aluminide and silicide were tested, but they found to be very brittl…
View article: Synthesis of FeSi–FeAl Composites from Separately Prepared FeSi and FeAl Alloys and Their Structure and Properties
Synthesis of FeSi–FeAl Composites from Separately Prepared FeSi and FeAl Alloys and Their Structure and Properties Open
Composites consisting of iron aluminide and iron silicide phases were studied in this work. Powders of iron aluminide and iron silicide were prepared by mechanical alloying separately. Subsequently, they were blended in three different pro…
View article: Improvement in Abrasive Wear Resistance of Metal Matrix Composites Used for Diamond–Impregnated Tools by Heat Treatment
Improvement in Abrasive Wear Resistance of Metal Matrix Composites Used for Diamond–Impregnated Tools by Heat Treatment Open
This work presents the possibilities of producing a substitute for a commercial matrix material for sintered metal–diamond tools which is characterized by increased tribological properties required in machining natural stones and concrete.…
View article: Processing of Niobium-Alloyed High-Carbon Tool Steel via Additive Manufacturing and Modern Powder Metallurgy
Processing of Niobium-Alloyed High-Carbon Tool Steel via Additive Manufacturing and Modern Powder Metallurgy Open
Niobium is recently considered one of the potential alloying elements for tool steels due to the formation of hard and stable carbides of MC type. Its use is limited by the fact that these carbides tend to coarsen during conventional melti…
View article: PREPARATION OF NiAl-FeSi COMPOSITES BY POWDER METALLURGY
PREPARATION OF NiAl-FeSi COMPOSITES BY POWDER METALLURGY Open
This work deals with the development of the preparation route for the composites with nickel aluminide reinforced by FeSi particles.The optimization of mechanical alloying of individual phases, mixing and consolidation by spark plasma sint…
View article: Processing of Deep-sea Nodules by Silicothermic Reduction
Processing of Deep-sea Nodules by Silicothermic Reduction Open
Deep-sea nodules are ores formed on the sea floor at depths of 3000 to 6000 m as a result of sedimen-tation. They range in size from 1 cm to 15 cm and contain mainly manganese and iron and other ele-ments that are collected from the nodule…
View article: CCDC 2203729: Experimental Crystal Structure Determination
CCDC 2203729: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2203727: Experimental Crystal Structure Determination
CCDC 2203727: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2203730: Experimental Crystal Structure Determination
CCDC 2203730: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2203731: Experimental Crystal Structure Determination
CCDC 2203731: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2203732: Experimental Crystal Structure Determination
CCDC 2203732: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2203728: Experimental Crystal Structure Determination
CCDC 2203728: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Heat Treatment of Metallic Materials in Modern Industry
Heat Treatment of Metallic Materials in Modern Industry Open
The Heat Treatment of Metallic Materials in Modern Industry is a Special Issue of the journal Materials, which aims to publish original full-length articles and review papers on basic and applied research centered around the given topic, a…
View article: Ellenberg-type indicator values for European vascular plant species
Ellenberg-type indicator values for European vascular plant species Open
This is a dataset of Ellenberg-type indicator values for European vascular plant species described in this article: Tichý L., Axmanová I., Dengler J., Guarino R., Jansen F., Midolo G., Nobis M.P., Van Meerbeek K., Aćić S., Attorre F., Berg…
View article: Microstructural Characteristics of Al-Ti-B Inoculation Wires and Their Addition to the AlSi7Mg0.3 Alloy
Microstructural Characteristics of Al-Ti-B Inoculation Wires and Their Addition to the AlSi7Mg0.3 Alloy Open
Commercially supplied inoculation wires have a guaranteed chemical composition but not the size and distribution of individual phases, which are very important for nucleation. Therefore, two commercial alloys used for the inoculation of Al…
View article: Cast and Rapidly Solidified Aluminium Alloy with the Addition of Deep-sea Nodules
Cast and Rapidly Solidified Aluminium Alloy with the Addition of Deep-sea Nodules Open
Reduced deep-sea nodules were tested as the alloying mixture for cast and rapidly solidified aluminium alloy. No separation of any metal was used in order to save the processing costs of the deep-sea nodules and to obtain "natural" ratios …
View article: Heat Treatment of Aluminum Alloys with the Natural Combination of Dopants
Heat Treatment of Aluminum Alloys with the Natural Combination of Dopants Open
Aluminothermic reduction without the separation of individual metals is currently considered as a possible method for processing ferromanganese sea nodules and creating new alloys. In this study, the product of their reduction—a manganese-…
View article: Ellenberg-type indicator values for European vascular plant species
Ellenberg-type indicator values for European vascular plant species Open
This is a dataset of Ellenberg-type indicator values for European vascular plant species described in this article: Tichý L. et al. (2023) Ellenberg-type indicator values for European vascular plant species. Journal of Vegetation Science 3…
View article: Possibilities of a Direct Synthesis of Aluminum Alloys with Elements from Deep-Sea Nodules
Possibilities of a Direct Synthesis of Aluminum Alloys with Elements from Deep-Sea Nodules Open
This work investigated the possibility of the direct preparation of aluminum alloys by aluminothermic reduction of deep-sea nodules with a high excess of aluminum. The process was found to be unable to obtain aluminum alloy, but an aluminu…