Search Results - "Rafaja, David"

Deformation Mechanisms in Austenitic TRIP/TWIP Steel as a Function of Temperature by Martin, Stefan, Wolf, Steffen, Martin, Ulrich, Krüger, Lutz, Rafaja, David

“…A high-alloy austenitic CrMnNi steel was deformed at temperatures between 213 K and 473 K (−60 °C and 200 °C) and the resulting microstructures were…”
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Influence of the hierarchical architecture of multi-core iron oxide nanoflowers on their magnetic properties by Neumann, Stefan, Kuger, Laura, Arlt, Carsten-Rene, Franzreb, Matthias, Rafaja, David

“…Magnetic properties of superparamagnetic iron oxide nanoparticles are controlled mainly by their particle size and by their particle size distribution…”
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Structure model of γ-Al2O3 based on planar defects by Rudolph, Martin, Motylenko, Mykhaylo, Rafaja, David

“…The defect structure of γ-Al2O3 derived from boehmite was investigated using a combination of selected-area electron diffraction (SAED) and powder X-ray…”
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Predicting hardness of graphene-added Si3N4 using machine learning: A data-driven approach by Qadir, Awais, Ali, Shoaib, Dusza, Jan, Rafaja, David

“…This study presents a data-driven framework based on machine learning (ML) using extreme gradient boosting (XGBoost) for predicting the hardness of silicon…”
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Calcite Nanotuned Chitinous Skeletons of Giant Ianthella basta Marine Demosponge by Kertmen, Ahmet, Petrenko, Iaroslav, Schimpf, Christian, Rafaja, David, Petrova, Olga, Sivkov, Viktor, Nekipelov, Sergey, Fursov, Andriy, Stelling, Allison L, Heimler, Korbinian, Rogoll, Anika, Vogt, Carla, Ehrlich, Hermann

“…Marine sponges were among the first multicellular organisms on our planet and have survived to this day thanks to their unique mechanisms of chemical defense…”
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A borehole investigation of zircon radiation damage annealing by Jonckheere, Raymond, Heinz, Daniel, Hacker, Bradley R., Rafaja, David, Ratschbacher, Lothar

“…This contribution reports Raman radiation damage measurements of zircons from the Kontinentale Tiefbohrung, on the western border of the Bohemian Massif. The…”
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Spider Chitin: An Ultrafast Microwave-Assisted Method for Chitin Isolation from Caribena versicolor Spider Molt Cuticle by Machałowski, Tomasz, Wysokowski, Marcin, Tsurkan, Mikhail V, Galli, Roberta, Schimpf, Christian, Rafaja, David, Brendler, Erica, Viehweger, Christine, Żółtowska-Aksamitowska, Sonia, Petrenko, Iaroslav, Czaczyk, Katarzyna, Kraft, Michael, Bertau, Martin, Bechmann, Nicole, Guan, Kaomei, Bornstein, Stefan R, Voronkina, Alona, Fursov, Andriy, Bejger, Magdalena, Biniek-Antosiak, Katarzyna, Rypniewski, Wojciech, Figlerowicz, Marek, Pokrovsky, Oleg, Jesionowski, Teofil, Ehrlich, Hermann

“…Chitin, as a fundamental polysaccharide in invertebrate skeletons, continues to be actively investigated, especially with respect to new sources and the…”
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3D Chitin Scaffolds of Marine Demosponge Origin for Biomimetic Mollusk Hemolymph-Associated Biomineralization Ex-Vivo by Wysokowski, Marcin, Machałowski, Tomasz, Petrenko, Iaroslav, Schimpf, Christian, Rafaja, David, Galli, Roberta, Ziętek, Jerzy, Pantović, Snežana, Voronkina, Alona, Kovalchuk, Valentine, Ivanenko, Viatcheslav N, Hoeksema, Bert W, Diaz, Cristina, Khrunyk, Yuliya, Stelling, Allison L, Giovine, Marco, Jesionowski, Teofil, Ehrlich, Hermann

“…Structure-based tissue engineering requires large-scale 3D cell/tissue manufacture technologies, to produce biologically active scaffolds. Special attention is…”
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Directionality of metal-induced crystallization and layer exchange in amorphous carbon/nickel thin film stacks by Janke, Daniel, Munnik, Frans, Julin, Jaakko, Hübner, René, Grenzer, Jörg, Wüstefeld, Christina, Gemming, Sibylle, Rafaja, David, Krause, Matthias

“…In thin amorphous carbon (a-C) films being in contact with a thin nickel layer, metal-induced crystallization and layer exchange (LE) occur at temperatures…”
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Hematites Precipitated in Alkaline Precursors: Comparison of Structural and Textural Properties for Methane Oxidation by Valášková, Marta, Leštinský, Pavel, Matějová, Lenka, Klemencová, Kateřina, Ritz, Michal, Schimpf, Christian, Motylenko, Mykhailo, Rafaja, David, Bělík, Jakub

“…Hematite (α-Fe2O3) catalysts prepared using the precipitation methods was found to be highly effective, and therefore, it was studied with methane (CH4),…”
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Transformation Pathway upon Heating of Ti–Fe Alloys Deformed by High‐Pressure Torsion by Kriegel, Mario J., Kilmametov, Askar, Rudolph, Martin, Straumal, Boris B., Gornakova, Alena S., Stöcker, Hartmut, Ivanisenko, Yulia, Fabrichnaya, Olga, Hahn, Horst, Rafaja, David

“…The current work presents the results of a study of the thermal stability of metastable ω‐Ti(Fe) produced by a high‐pressure torsion process and describes the…”
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Microstructure changes responsible for the degradation of the 10CrMo9-10 and 13CrMo4-5 steels during long-term operation by Gwo dzik, Monika, Motylenko, Mykhaylo, Rafaja, David

“…The paper presents results of microstructure and mechanical testing examinations performed using optical and transmission electron microscopy, tensile tests…”
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In situ X-ray diffraction study of stacking fault formation in the near-surface region of transformation induced plasticity steels by Rafaja, David, Krbetschek, Christina, Borisova, Daria, Schreiber, Gerhard, Klemm, Volker

“…Formation of stacking faults in the near-surface region of Cr–Mn–Ni steels that shows the effect of transformation induced plasticity (TRIP) was investigated…”
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Main-Group and Transition-Element IRMOF Homologues by Hausdorf, Steffen, Baitalow, Felix, Böhle, Tony, Rafaja, David, Mertens, Florian O. R. L

“…A simple two-component procedure was developed to synthesize not only classical zinc-based IRMOFs represented by MOF-5 but also the cobalt and beryllium…”
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Microstructure-Informed Prediction of Hardening in Ion-Irradiated Reactor Pressure Vessel Steels by Lai, Libang, Brandenburg, Jann-Erik, Chekhonin, Paul, Duplessi, Arnaud, Cuvilly, Fabien, Etienne, Auriane, Radiguet, Bertrand, Rafaja, David, Bergner, Frank

“…Ion irradiation combined with nanoindentation is a promising tool for studying irradiation-induced hardening of nuclear materials, including reactor pressure…”
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Austenitic Nickel- and Manganese-Free Fe-15Cr-1Mo-0.4N-0.3C Steel: Tensile Behavior and Deformation-Induced Processes between 298 K and 503 K (25 °C and 230 °C) by Mola, Javad, Ullrich, Christiane, Kuang, Buxiao, Rahimi, Reza, Huang, Qiuliang, Rafaja, David, Ritzenhoff, Roman

“…The high-temperature austenite phase of a high-interstitial Mn- and Ni-free stainless steel was stabilized at room temperature by the full dissolution of…”
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Functionalization of 3D Chitinous Skeletal Scaffolds of Sponge Origin Using Silver Nanoparticles and Their Antibacterial Properties by Machałowski, Tomasz, Czajka, Maria, Petrenko, Iaroslav, Meissner, Heike, Schimpf, Christian, Rafaja, David, Ziętek, Jerzy, Dzięgiel, Beata, Adaszek, Łukasz, Voronkina, Alona, Kovalchuk, Valentin, Jaroszewicz, Jakub, Fursov, Andriy, Rahimi-Nasrabadi, Mehdi, Stawski, Dawid, Bechmann, Nicole, Jesionowski, Teofil, Ehrlich, Hermann

“…Chitin, as one of nature's most abundant structural polysaccharides, possesses worldwide, high industrial potential and a functionality that is topically…”
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Multiphase Biomineralization: Enigmatic Invasive Siliceous Diatoms Produce Crystalline Calcite by Ehrlich, Hermann, Motylenko, Mykhailo, Sundareshwar, Pallaoor V., Ereskovsky, Alexander, Zgłobicka, Izabela, Noga, Teresa, Płociński, Tomasz, Tsurkan, Mikhail V., Wyroba, Elżbieta, Suski, Szymon, Bilski, Henryk, Wysokowski, Marcin, Stöcker, Hartmut, Makarova, Anna, Vyalikh, Denis, Walter, Juliane, Molodtsov, Serguei L., Bazhenov, Vasilii V., Petrenko, Iaroslav, Langer, Enrico, Richter, Andreas, Niederschlag, Elke, Pisarek, Marcin, Springer, Armin, Gelinsky, Michael, Rafaja, David, Witkowski, Andrzej, Meyer, Dirk C., Jesionowski, Teofil, Kurzydłowski, Krzysztof J.

“…Diatoms are considered unicellular eukaryotic organisms exclusively depositing biogenic silica. Heretofore there has been no report of calcification by these…”
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Influence of elevated temperature and reduced pressure on the degradation of iron nitride compound layer formed by plasma nitriding in AISI D2 tool steels by Ratayski, Ulrike, Schimpf, Christian, Wüstefeld, Christina, Dalke, Anke, Biermann, Horst, Rafaja, David

“…The stability of an iron nitride compound layer prepared by plasma nitriding of AISI D2 tool steel is investigated using in situ high‐temperature X‐ray…”
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Characterization of oxide layers formed on 10CrMo9-10 steel operated for a long time in the power industry by Gwoździk, Monika, Ullrich, Christiane, Schimpf, Christian, Rafaja, David, Kulesza, Sławomir, Bramowicz, Mirosław

“…This paper presents the results of diagnostic examinations conducted on the coils of super-heaters made of 10CrMo9‒10 steel that were operated in industrial…”
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