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. zurück Publikationen:
2024
Philipp Brunner and Roland Würschum Diffusion-reaction model of positron annihilation for complex defect pattern Journal of Physics Condensed Matter 36, 2024 , DOI Publikation in PURE anzeigen
2023
Roland Würschum Mean time of diffusion- and reaction-limited loading and unloading Applied Physics A: Materials Science and Processing 129, 2023 , DOI Publikation in PURE anzeigen
Robert Josef Enzinger, Martin Luckabauer, Norihiko L. Okamato, Tetsu Ichitsubo, Wolfgang Sprengel and Roland Würschum Influence of Oxygen on the Kinetics of Omega and Alpha Phase Formation in Beta Ti–V Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science 54, 473-486, 2023 , DOI Publikation in PURE anzeigen
Florian Brumbauer, Ulrich Brossmann, Robert Josef Enzinger, Jiehua Lie, Wolfgang Sprengel and Roland Würschum Precipitation processes of Al-1.7 at% Cu and the influence of Au micro-alloying studied by dilatometry Journal of Alloys and Compounds 960, 2023 , DOI Publikation in PURE anzeigen
2022
Roland Würschum, Robert Weitenhüller, Robert Josef Enzinger and Wolfgang Sprengel Modulated dilatometry as a tool for simultaneous study of vacancy formation and migration International Journal of Materials Research 113, 683-692, 2022 , DOI Publikation in PURE anzeigen
Laura Resch, Anna Karner, Wolfgang Sprengel, Roland Würschum and Robert Schennach Water intake of cellulose materials monitored by positron annihilation lifetime spectroscopy Cellulose 29, 1357–1363, 2022 , DOI Publikation in PURE anzeigen
Philipp Brunner, Eva-Maria Steyskal, Stefan Topolovec and Roland Würschum Positronium chemistry of a Fe2+/3+ solution under electrochemical control The Journal of Chemical Physics 157, 2022 , DOI Publikation in PURE anzeigen
2021
Philipp Emanuel Brunner, Eva-Maria Steyskal and Roland Würschum Electrochemical switching of positronium triplet quenching Physical Chemistry, Chemical Physics 23, 25278-25283, 2021 , DOI Publikation in PURE anzeigen
2020
Laura Resch, Thomas Gigl, Gregor Klinser, Christoph Hugenschmidt, Wolfgang Sprengel and Roland Würschum In situ monitoring of artificial aging and solution heat treatment of a commercial Al–Mg–Si alloy with a high intensity positron beam Journal of Physics Condensed Matter 32, 2020 , DOI Publikation in PURE anzeigen
Laura Resch, Martin Luckabauer, Nick Helthuis, Norihiko Okamoto, Tetsu Ichitsubo, Robert Josef Enzinger, Wolfgang Sprengel and Roland Würschum Search for vacancies in concentrated solid-solution alloys with fcc crystal structure Physical Review Materials 4, 2020 , DOI Publikation 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. Wilkening Influence of defects on ionic transport in LiTaO3 – A study using EXAFS and positron annihilation lifetime spectroscopy Solid State Ionics 352, 2020 , DOI Publikation in PURE anzeigen
Roland Würschum and Gregor Klinser Diffusion-drift-reaction model for positron trapping and annihilation at interfaces with space charge in bulk materials The Philosophical Magazine 100, 379-397, 2020 , DOI Publikation in PURE anzeigen
Norihiko Okamoto, Shuhei Kasatani, Martin Luckabauer, Robert Josef Enzinger, Satoshi Tsutsui, Masakazu Tane and Tetsu Ichitsubo Evolution of microstructure and variations in mechanical properties accompanied with diffusionless isothermal ω transformation in β-titanium alloys Physical Review Materials 4, 2020 , DOI Publikation in PURE anzeigen
2019
Robert Josef Enzinger, Elisabeth Hengge, Wolfgang Sprengel and Roland Würschum High-precision isothermal dilatometry as tool for quantitative analysis of precipitation kinetics: case study of dilute Al alloy Journal of Materials Science 54, 5083-5091, 2019 , DOI Publikation in PURE anzeigen
2018
Laura Resch, Gregor Klinser, Elisabeth Hengge, Robert Josef Enzinger, Martin Luckabauer, Wolfgang Sprengel and Roland Würschum Precipitation processes in Al–Mg–Si extending down to initial clustering revealed by the complementary techniques of positron lifetime spectroscopy and dilatometry Journal of Materials Science 53, 14657, 2018 , DOI Publikation in PURE anzeigen
R. Enzinger, C. Neubauer, J. Kotzurek, W. Sprengel and R. Würschum Kinetics of vacancy annealing upon time-linear heating applied to dilatometry Journal of Materials Science 53, 2758-2765, 2018 , DOI Publikation in PURE anzeigen
Elisabeth Hengge, Robert Josef Enzinger, Martin Luckabauer, Wolfgang Sprengel and Roland Würschum Quantitative volumetric identification of precipitates in dilute alloys using high-precision isothermal dilatometry Philosophical Magazine / Letters 98, 301, 2018 , DOI Publikation in PURE anzeigen
Roland Würschum, Laura Resch and Gregor Klinser Diffusion-reaction model for positron trapping and annihilation at spherical extended defects and in precipitate-matrix composites Physical Review B 97, 224108-1 - 11, 2018 , DOI Publikation in PURE anzeigen
2017
Jaromir Kotzurek, Wolfgang Sprengel, Maciej Krystian, Sanja Simic, Peter Pölt, Anton Hohenwarter, Reinhard Pippan and Roland Würschum Structural anisotropy in equal-channel angular extruded nickel revealed by dilatometric study of excess volume International Journal of Materials Research 108, 81-88, 2017 , DOI Publikation 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 Fiedler Defects and Charging Processes in Li-Ion Battery Cathodes Studied by Operando Magnetometry and Positron Anihilation Materials Science Forum 879, 2125-2130, 2017 , DOI Publikation in PURE anzeigen
Jaromir Kotzurek, M. Hofmann, S. Simic, Peter Pölt, A. Hohenwarter, R. Pippan, Wolfgang Sprengel and Roland Würschum Internal stress and defect-related free volume in submicrocrystalline Ni studied by neutron diffraction and difference dilatometry Philosophical Magazine / Letters 97, 450-458, 2017 , DOI Publikation in PURE anzeigen
2016
Gerrit Reglitz, Bernd Oberdorfer, Nina Fleischmann, Jaromir Kotzurek, Sergiy Divinski, Wolfgang Sprengel, Gerhard Wilde and Roland Würschum Combined volumetric energetic and microstructural defect analysis of ECAP-processed nickel Acta Materialia 103, 396-406, 2016 , DOI Publikation in PURE anzeigen
Jaromir Kotzurek, Eva-Maria Steyskal, Bernd Oberdorfer, Anton Hohenwarter, Reinhard Pippan, Wolfgang Sprengel and Roland Würschum Direct measurement of vacancy relaxation by dilatometry Applied Physics Letters 109, 021906, 2016 , DOI Publikation in PURE anzeigen
Martin Luckabauer, Wolfgang Sprengel and Roland Würschum A high-stability non-contact dilatometer for low-amplitude temperature-modulated measurements Review of Scientific Instruments 87, 075116, 2016 , DOI Publikation in PURE anzeigen
2014
Bernd Oberdorfer, Daria Setman, Eva-Maria Steyskal, Anton Hohenwarter, Wolfgang Sprengel, Michael Zehetbauer, Reinhard Pippan and Roland Würschum Grain boundary excess volume and defect annealing of copper after high-pressure torsion Acta Materialia 68, 189-195, 2014 , DOI Publikation in PURE anzeigen
2010
Bernd Oberdorfer, Bernd Lorenzoni, K. Unger, Wolfgang Sprengel, M. Zehetbauer, R. Pippan and Roland Würschum Absolute concentration of free volume-type defects in ultrafine-grained Fe prepared by high-pressure torsion Scripta Materialia 63, 452-455, 2010 , DOI Publikation in PURE anzeigen