Defekte und Umwandlungen von Materialien
Experimentelle Untersuchung atormarer Defekte und Prozesse in Materialien mit den spezifischen und empfindlichen Methoden der Positron-Elektron Zerstrahlung und der Dilatometrie.
zurückPublikationen:
2023
Roland WürschumMean time of diffusion- and reaction-limited loading and unloadingApplied Physics A: Materials Science and Processing129,
2023, DOIPublikation in PURE anzeigen
Robert Josef Enzinger, Martin Luckabauer, Norihiko L. Okamato, Tetsu Ichitsubo, Wolfgang Sprengel and Roland WürschumInfluence of Oxygen on the Kinetics of Omega and Alpha Phase Formation in Beta Ti–VMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science54,
473-486,
2023, DOIPublikation in PURE anzeigen
2022
Roland Würschum, Robert Weitenhüller, Robert Josef Enzinger and Wolfgang SprengelModulated dilatometry as a tool for simultaneous study of vacancy formation and migrationInternational Journal of Materials Research 113,
683-692,
2022, DOIPublikation in PURE anzeigen
Laura Resch, Anna Karner, Wolfgang Sprengel, Roland Würschum and Robert SchennachWater intake of cellulose materials monitored by positron annihilation lifetime spectroscopyCellulose29,
1357–1363,
2022, DOIPublikation in PURE anzeigen
Philipp Brunner, Eva-Maria Steyskal, Stefan Topolovec and Roland WürschumPositronium chemistry of a Fe2+/3+ solution under electrochemical controlThe Journal of Chemical Physics157,
2022, DOIPublikation in PURE anzeigen
2021
Philipp Emanuel Brunner, Eva-Maria Steyskal and Roland WürschumElectrochemical switching of positronium triplet quenchingPhysical Chemistry, Chemical Physics23,
25278-25283,
2021, DOIPublikation in PURE anzeigen
2020
Laura Resch, Thomas Gigl, Gregor Klinser, Christoph Hugenschmidt, Wolfgang Sprengel and Roland WürschumIn situ monitoring of artificial aging and solution heat treatment of a commercial Al–Mg–Si alloy with a high intensity positron beamJournal of Physics Condensed Matter32,
2020, DOIPublikation in PURE anzeigen
Laura Resch, Martin Luckabauer, Nick Helthuis, Norihiko Okamoto, Tetsu Ichitsubo, Robert Josef Enzinger, Wolfgang Sprengel and Roland WürschumSearch for vacancies in concentrated solid-solution alloys with fcc crystal structurePhysical Review Materials4,
2020, DOIPublikation in PURE anzeigen
B. Gadermaier, L. Resch, D. M. Pickup, I. Hanghofer, I. Hanzu, P. Heitjans, W. Sprengel, R. Würschum, A. V. Chadwick and H. M.R. WilkeningInfluence of defects on ionic transport in LiTaO3 – A study using EXAFS and positron annihilation lifetime spectroscopySolid State Ionics352,
2020, DOIPublikation in PURE anzeigen
Roland Würschum and Gregor KlinserDiffusion-drift-reaction model for positron trapping and annihilation at interfaces with space charge in bulk materialsThe Philosophical Magazine100,
379-397,
2020, DOIPublikation in PURE anzeigen
Norihiko Okamoto, Shuhei Kasatani, Martin Luckabauer, Robert Josef Enzinger, Satoshi Tsutsui, Masakazu Tane and Tetsu IchitsuboEvolution of microstructure and variations in mechanical properties accompanied with diffusionless isothermal ω transformation in β-titanium alloysPhysical Review Materials4,
2020, DOIPublikation in PURE anzeigen
2019
Robert Josef Enzinger, Elisabeth Hengge, Wolfgang Sprengel and Roland WürschumHigh-precision isothermal dilatometry as tool for quantitative analysis of precipitation kinetics: case study of dilute Al alloyJournal of Materials Science54,
5083-5091,
2019, DOIPublikation in PURE anzeigen
2018
Laura Resch, Gregor Klinser, Elisabeth Hengge, Robert Josef Enzinger, Martin Luckabauer, Wolfgang Sprengel and Roland WürschumPrecipitation processes in Al–Mg–Si extending down to initial clustering revealed by the complementary techniques of positron lifetime spectroscopy and dilatometryJournal of Materials Science53,
14657,
2018, DOIPublikation in PURE anzeigen
R. Enzinger, C. Neubauer, J. Kotzurek, W. Sprengel and R. WürschumKinetics of vacancy annealing upon time-linear heating applied to dilatometryJournal of Materials Science53,
2758-2765,
2018, DOIPublikation in PURE anzeigen
Elisabeth Hengge, Robert Josef Enzinger, Martin Luckabauer, Wolfgang Sprengel and Roland WürschumQuantitative volumetric identification of precipitates in dilute alloys using high-precision isothermal dilatometryPhilosophical Magazine / Letters98,
301,
2018, DOIPublikation in PURE anzeigen
Roland Würschum, Laura Resch and Gregor KlinserDiffusion-reaction model for positron trapping and annihilation at spherical extended defects and in precipitate-matrix compositesPhysical Review B97,
224108-1 - 11,
2018, DOIPublikation in PURE anzeigen
2017
Jaromir Kotzurek, Wolfgang Sprengel, Maciej Krystian, Sanja Simic, Peter Pölt, Anton Hohenwarter, Reinhard Pippan and Roland WürschumStructural anisotropy in equal-channel angular extruded nickel revealed by dilatometric study of excess volumeInternational Journal of Materials Research 108,
81-88,
2017, DOIPublikation in PURE anzeigen
Roland Würschum, Stefan Topolovec, Gregor Klinser, Wolfgang Sprengel, Harald Kren, Stefan Koller, H Krenn, Christoph Hugenschmidt, M. Reiner, Thomas Gigl, Frank Berkermeier and Martin FiedlerDefects and Charging Processes in Li-Ion Battery Cathodes Studied by Operando Magnetometry and Positron AnihilationMaterials Science Forum879,
2125-2130,
2017, DOIPublikation in PURE anzeigen
Jaromir Kotzurek, M. Hofmann, S. Simic, Peter Pölt, A. Hohenwarter, R. Pippan, Wolfgang Sprengel and Roland WürschumInternal stress and defect-related free volume in submicrocrystalline Ni studied by neutron diffraction and difference dilatometryPhilosophical Magazine / Letters97,
450-458,
2017, DOIPublikation in PURE anzeigen
2016
Gerrit Reglitz, Bernd Oberdorfer, Nina Fleischmann, Jaromir Kotzurek, Sergiy Divinski, Wolfgang Sprengel, Gerhard Wilde and Roland WürschumCombined volumetric energetic and microstructural defect analysis of ECAP-processed nickelActa Materialia103,
396-406,
2016, DOIPublikation in PURE anzeigen
Jaromir Kotzurek, Eva-Maria Steyskal, Bernd Oberdorfer, Anton Hohenwarter, Reinhard Pippan, Wolfgang Sprengel and Roland WürschumDirect measurement of vacancy relaxation by dilatometryApplied Physics Letters109,
021906,
2016, DOIPublikation in PURE anzeigen
Martin Luckabauer, Wolfgang Sprengel and Roland WürschumA high-stability non-contact dilatometer for low-amplitude temperature-modulated measurementsReview of Scientific Instruments87,
075116,
2016, DOIPublikation in PURE anzeigen
2014
Bernd Oberdorfer, Daria Setman, Eva-Maria Steyskal, Anton Hohenwarter, Wolfgang Sprengel, Michael Zehetbauer, Reinhard Pippan and Roland WürschumGrain boundary excess volume and defect annealing of copper after high-pressure torsionActa Materialia68,
189-195,
2014, DOIPublikation in PURE anzeigen
2010
Bernd Oberdorfer, Bernd Lorenzoni, K. Unger, Wolfgang Sprengel, M. Zehetbauer, R. Pippan and Roland WürschumAbsolute concentration of free volume-type defects in ultrafine-grained Fe prepared by high-pressure torsionScripta Materialia63,
452-455,
2010, DOIPublikation in PURE anzeigen
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