David Hradil
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View article: “Hungarian Mine Green”, a Semi‐Natural Copper Pigment from Banská Bystrica Region (Slovakia) ‐ Analytical Evidence and Laboratory Replication
“Hungarian Mine Green”, a Semi‐Natural Copper Pigment from Banská Bystrica Region (Slovakia) ‐ Analytical Evidence and Laboratory Replication Open
A comprehensive approach is taken to investigate the “Hungarian mine green” pigment, including a historical overview, analysis of the pigment on artworks, and its laboratory replication. It is known that in the past, the pigment is collect…
View article: Pre‐industrial Use of Bauxite by Late Gothic Goldsmith Masters: Analytical Evidence and Experimental Study
Pre‐industrial Use of Bauxite by Late Gothic Goldsmith Masters: Analytical Evidence and Experimental Study Open
The turn of the 15 th and the 16 th century was marked by turmoil including invasion of the Turks in the Balkans. Consequently, trade routes to the Mediterranean were disrupted, resulting in sudden demand for alternative sources of importe…
View article: Optimized Thermomechanical Processing of Ti13nb13zr Alloy for Enhanced Biomedical Implant Performance
Optimized Thermomechanical Processing of Ti13nb13zr Alloy for Enhanced Biomedical Implant Performance Open
View article: Permanent direct part marking for metal parts processed at high temperature
Permanent direct part marking for metal parts processed at high temperature Open
This article introduces new options for high-temperature permanent ink marking of machine parts. As experimental materials, ferrous metals (EN X40CrMoV5-1, EN 16MnCr5, EN S355J2+N) and titanium alloys (Ti6Al4V) have been printed. The paper…
View article: Non-invasive evidence of mercury soaps in painted miniatures on ivory
Non-invasive evidence of mercury soaps in painted miniatures on ivory Open
This work focuses on a non-invasive study of two selected painted miniature portraits on ivory to describe the degradation processes resulting from the interaction between mercury-based and lead-based pigments with oils. In the studied min…
View article: Unique Wood Ash Co-Coloured Glass Tessera from Mediaeval Madonna: Raman Spectroscopic Study of Production Technology
Unique Wood Ash Co-Coloured Glass Tessera from Mediaeval Madonna: Raman Spectroscopic Study of Production Technology Open
View article: Metalographic analysis of durable lAyers made by laser cladding for exposed parts
Metalographic analysis of durable lAyers made by laser cladding for exposed parts Open
The main objective of this research is to design and analyse laser cladding with different additive materials and variable cladding parameters.Coatings were produced to increase the corrosion and mechanical resistance of highly stressed ro…
View article: Improving the Wear Resistance of Ledeburitic Tool Steels by a Combination of Semi-Solid and Cryogenic Processing
Improving the Wear Resistance of Ledeburitic Tool Steels by a Combination of Semi-Solid and Cryogenic Processing Open
Ledeburitic tool steel X210Cr12 was processed by passing through a semi-solid state with subsequent forming on a hydraulic press, thus achieving a fine-grained martensitic matrix, uniformly dispersed fine precipitates, and removal of sharp…
View article: Iodinated Contrast Medium Affects Urine Cytology Assessment: A Prospective, Single-Blind Study and Its Impact on Urological Practice
Iodinated Contrast Medium Affects Urine Cytology Assessment: A Prospective, Single-Blind Study and Its Impact on Urological Practice Open
During endoscopic procedures for suspected urothelial tumors of the upper urinary tract, radiographic imaging using an iodinated contrast medium is often required. However, following ureteropyelography, we detected changes in cytology char…
View article: Laboratory X-ray powder diffraction as a useful tool for identification of pigments and degradation products in portrait miniatures painted on ivory
Laboratory X-ray powder diffraction as a useful tool for identification of pigments and degradation products in portrait miniatures painted on ivory Open
Fully non-invasive multi-analytical approach combining spectroscopic (FT-IR, Raman) and X-ray-based (MA-XRF, XRPD) techniques was used to study a number of miniature portraits from Czech collections.The portrait miniatures of the late sixt…
View article: Impact of semi-solid processing and cryogenic treatment on wear resistance of X210Cr12 tool steel
Impact of semi-solid processing and cryogenic treatment on wear resistance of X210Cr12 tool steel Open
Semi-solid processing is type of process where metastable microstructure with carbide network may be obtained. Metastable austenite is embedded in carbide-austenite network even in ordinary tool steels. The paper describe semi-solid proces…
View article: Resistance of tool steel processed by unconventional forming technology against abrasive wear
Resistance of tool steel processed by unconventional forming technology against abrasive wear Open
Materiály používané v podmínkách abrazivního opotřebení jsou obvykle vybírány podle jejich mikrostruktury a tvrdosti, ale také dle dalších méně zkoumaných faktorů. Tyto další faktory, jako je velikost zrn a morfologie i velikost karbidů, m…
View article: Clay Minerals in European Painting of the Mediaeval and Baroque Periods
Clay Minerals in European Painting of the Mediaeval and Baroque Periods Open
Clay-based pigments are among the most traditional. Unlike other mineral pigments, they have never been fully replaced by synthetic analogues and are still used in painting today. Since their analysis requires a specific approach, detailed…
View article: Grain refinement in hypereutectoid steel by semi-solid processing followed by mechanical working
Grain refinement in hypereutectoid steel by semi-solid processing followed by mechanical working Open
V oblasti výzkumu nových metod tváření byly objeveny dosud nevyužívané metody pro modifikaci výsledných struktur ledeburitických ocelí. Díky inovativnímu přístupu ke zpracování lze dosáhnout lepších mechanických vlastností odstraněním prob…
View article: Multistage cryogenic treatment of X153CrMoV12 cold work steel
Multistage cryogenic treatment of X153CrMoV12 cold work steel Open
The article presents the influence of multistage cryogenic treatment (MCT) on the microstructure and properties of X153CrMoV12 cold work steel. Basic mechanical properties of steel, such as hardness and wear resistance (3 rolls-cone system…
View article: Accelerated Carbide Spheroidisation and Refinement in Spring Steel 54SiCr6
Accelerated Carbide Spheroidisation and Refinement in Spring Steel 54SiCr6 Open
Reduction of processing time is the goal of every business. In some cases, speeding up manufacturing processes is impossible or takes place at the expense of quality. The purpose of soft annealing is to obtain globular carbides in the micr…
View article: GAS NITRIDING WITH DEEP CRYOGENIC TREATMENT OF HIGH-SPEED STEEL
GAS NITRIDING WITH DEEP CRYOGENIC TREATMENT OF HIGH-SPEED STEEL Open
Nitriding with subsequent heat treatment in combination with deep cryogenic treatment (DCT) produces nitrided layers with specific properties. Layers with unique properties result from the dissolution of subsurface layers of iron nitrides …
View article: Vliv hlubokého kryogenního zpracování na vlastnosti nitridované vrstvy
Vliv hlubokého kryogenního zpracování na vlastnosti nitridované vrstvy Open
Nitridace s následným tepelným zpracováním v kombinaci s hlubokým kryogenním zpracováním (DCT) vytváří nitridační vrstvy se specifickými vlastnostmi. Vrstvy unikátních vlastností vznikají díky rozpuštění podpovrchové vrstvy nitridů železa …
View article: Non-invasive Morphological and Elemental Analysis of Ivory Plate for Artworks Authentication Using ESEM and EDS
Non-invasive Morphological and Elemental Analysis of Ivory Plate for Artworks Authentication Using ESEM and EDS Open
Journal Article Non-invasive Morphological and Elemental Analysis of Ivory Plate for Artworks Authentication Using ESEM and EDS Get access Eva Tihlaříková, Eva Tihlaříková Environmental Electron Microscopy Group, Institute of Scientific In…
View article: New diagnostic options and prognosis prediction of urinary bladder cancer
New diagnostic options and prognosis prediction of urinary bladder cancer Open
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View article: Provenancing of clay-based pigments in paints using quantitative X-ray micro-diffraction analysis
Provenancing of clay-based pigments in paints using quantitative X-ray micro-diffraction analysis Open
View article: Mechanicko strukturní charakteristiky materiálů vyrobených metodou SLM
Mechanicko strukturní charakteristiky materiálů vyrobených metodou SLM Open
Diplomová práce se zabývá mechanickými a strukturními charakteristikami hliníkové slitiny řady 2000 vyrobenými metodou selektivního laserového tavení (SLM). Experimentální část práce zahrnuje volbu procesních parametrů metody SLM, vliv str…