Zobrazeno 1 - 10
of 156
pro vyhledávání: '"Krenn, Heinz"'
Synthesis of hard magnetic {\alpha}-MnBi phase by high pressure torsion and field assisted annealing
Autor:
Weissitsch, Lukas, Wurster, Stefan, Stueckler, Martin, Mueller, Timo, Krenn, Heinz, Pippan, Reinhard, Bachmaier, Andrea
Bulk composites using powder blends of Mn and Bi with equal atomic ratios are consolidated and severely deformed by high-pressure torsion (HPT). Subsequent annealing treatments lead to the formation of the ferromagnetic and rare-earth free hard magne
Externí odkaz:
http://arxiv.org/abs/2312.14580
Ferromagnetic (Fe or Fe20Ni80) and antiferromagnetic (NiO) phases were deformed by high pressure torsion, a severe plastic deformation technique, to manufacture bulk sized nanocomposites and demonstrate an exchange bias, which has been reported predo
Externí odkaz:
http://arxiv.org/abs/2301.04960
Autor:
Weissitsch, Lukas, Stückler, Martin, Wurster, Stefan, Todt, Juraj, Knoll, Peter, Krenn, Heinz, Pippan, Reinhard, Bachmaier, Andrea
Exchange-coupling between soft- and hard-magnetic phases plays an important role in the engineering of novel magnetic materials. To achieve exchange coupling, a two-phase microstructure is necessary. This interface effect is further enhanced if both
Externí odkaz:
http://arxiv.org/abs/2204.01383
Autor:
Wurster, Stefan, Stückler, Martin, Weissitsch, Lukas, Krenn, Heinz, Hohenwarter, Anton, Pippan, Reinhard, Bachmaier, Andrea
Publikováno v:
Nanomaterials 2022, 12(1), 23
The paper describes the capability of magnetic softening of a coarse grained bulk material by a severe deformation technique. Connecting the microstructure with magnetic properties, the coercive field decreases dramatically for grains smaller than th
Externí odkaz:
http://arxiv.org/abs/2201.03302
Autor:
Stückler, Martin, Wurster, Stefan, Weissitsch, Lukas, Krenn, Heinz, Pippan, Reinhard, Bachmaier, Andrea
Publikováno v:
Journal of Materials Research and Technology, Volume 12, 2021, Pages 1235-1242
Initial powder mixtures of Cu, Fe and Co are exposed to severe plastic deformation by high-pressure torsion to prepare solid solutions. A broad range of compositions is investigated, whereas this study aims at the synthesis of soft magnetic materials
Externí odkaz:
http://arxiv.org/abs/2104.02343
Autor:
Stückler, Martin, Teichert, Christian, Matković, Aleksandar, Krenn, Heinz, Weissitsch, Lukas, Wurster, Stefan, Pippan, Reinhard, Bachmaier, Andrea
Publikováno v:
Journal of Science: Advanced Materials and Devices, Volume 6, Issue 1, March 2021, Pages 33-41
In this study, a preparation route of Co-Cu alloys with soft magnetic properties by high-pressure torsion deformation is introduced. Nanocrystalline, supersaturated single-phase microstructures are obtained after deformation of Co-Cu alloys, which ar
Externí odkaz:
http://arxiv.org/abs/2102.07630
Autor:
Weissitsch, Lukas, Stückler, Martin, Wurster, Stefan, Knoll, Peter, Krenn, Heinz, Pippan, Reinhard, Bachmaier, Andrea
High-pressure torsion (HPT), a technique of severe plastic deformation (SPD), is shown as a promising processing method for exchange-spring magnetic materials in bulk form. Powder mixtures of Fe and SmCo$_{5}$ are consolidated and deformed by HPT exh
Externí odkaz:
http://arxiv.org/abs/2101.03900
Autor:
Stückler, Martin, Krenn, Heinz, Kürnsteiner, Philipp, Gault, Baptiste, De Geuser, Frédéric, Weissitsch, Lukas, Wurster, Stefan, Pippan, Reinhard, Bachmaier, Andrea
The capability of high-pressure torsion on the preparation of supersaturated solid solutions, consisting of Cu-14Fe (wt.%), is studied. From microstructural investigations a steady state is obtained with nanocrystalline grains. The as-deformed state
Externí odkaz:
http://arxiv.org/abs/2009.02954
Autor:
Wurster, Stefan, Weissitsch, Lukas, Stueckler, Martin, Knoll, Peter, Krenn, Heinz, Pippan, Reinhard, Bachmaier, Andrea
Publikováno v:
Metals, 2019, 9, 1188
Bulk metallic samples were synthesized from different binary powder mixtures consisting of elemental Cu, Co, and Fe using severe plastic deformation. Small particles of the ferromagnetic phase originate in the conductive Cu phase, either by incomplet
Externí odkaz:
http://arxiv.org/abs/2009.02952
Autor:
Stückler, Martin, Weissitsch, Lukas, Wurster, Stefan, Felfer, Peter, Krenn, Heinz, Pippan, Reinhard, Bachmaier, Andrea
Mixtures of Fe and Cu powders are cold-compacted and subsequently deformed with severe plastic deformation by high-pressure torsion, leading to bulk samples. The dilution of Fe in the Cu matrix is investigated with SQUID-magnetometry, whereas the mag
Externí odkaz:
http://arxiv.org/abs/2009.02932