Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Alfred Ludwig"'
Publikováno v:
Scripta Materialia. 188:259-263
Phase stability of a nanocrystalline CrCoNi alloy is investigated using the combinatorial processing platform approach, which enables synthesis, processing and direct atomic-scale characterizations of alloys by atom probe tomography and transmission
Publikováno v:
Scripta Materialia. 183:122-126
Based on our recently-developed combinatorial processing platforms for accelerated investigations of phase evolution in multinary alloys, a novel correlative atom probe tomography and transmission electron microscopy approach is proposed to study pha
Autor:
A. Pérez-Checa, Alfred Ludwig, Peer Decker, Jorge Feuchtwanger, Steffen Salomon, Patricia Lázpita, V. Alexandrakis, Jose Manuel Barandiaran, Volodymyr A. Chernenko
Publikováno v:
Scripta Materialia. 178:104-107
High temperature ferromagnetic shape memory alloys (HT-FSMAs) in form of a thin film materials library of Ni–Mn–Ga, alloyed with Fe, Co and Cu has been fabricated by co-sputtering and characterized by high-throughput screening techniques. The wea
Autor:
Zhongshan Li, Yujiao Li, Klaus Schierbaum, Michael Wark, Alfred Ludwig, Dennis Zywitzki, Daniel M. Baier, Dereje H. Taffa, Jan-Lucas Wree, Raoul Schaper, Detlef Rogalla, Anjana Devi, Engin Ciftyurek, Michael Meischein
Publikováno v:
Zywitzki, D, Schaper, R, Ciftyürek, E, Wree, J L, Taffa, D H, Baier, D M, Rogalla, D, Li, Y, Meischein, M, Ludwig, A, Li, Z, Schierbaum, K, Wark, M & Devi, A 2021, ' Chemical Vapor Deposition of Cobalt and Nickel Ferrite Thin Films : Investigation of Structure and Pseudocapacitive Properties ', Advanced Materials Interfaces, vol. 8, no. 20, 2100949 . https://doi.org/10.1002/admi.202100949
Transition metal ferrites, such as CoFe2O4 (CFO) and NiFe2O4 (NFO), have gained increasing attention as potential materials for supercapacitors. Since chemical vapor deposition (CVD) offers advantages like interface quality to the underlying substrat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2172adf953d76dad705dc5a9e8affa5
https://pure.au.dk/ws/files/285212173/Adv_Materials_Inter_2021_Zywitzki_Chemical_Vapor_Deposition_of_Cobalt_and_Nickel_Ferrite_Thin_Films_Investigation_of.pdf
https://pure.au.dk/ws/files/285212173/Adv_Materials_Inter_2021_Zywitzki_Chemical_Vapor_Deposition_of_Cobalt_and_Nickel_Ferrite_Thin_Films_Investigation_of.pdf
Autor:
Alfred Ludwig
Publikováno v:
npj Computational Materials, Vol 5, Iss 1, Pp 1-7 (2019)
This perspective provides an experimentalist’s view on materials discovery in multinary materials systems—from nanoparticles over thin films to bulk—based on combinatorial thin-film synthesis and high-throughput characterization in connection w
Publikováno v:
Shape Memory and Superelasticity. 5:106-112
A Co-Ni-Ga-Cr thin film materials library with a Cr concentration gradient ranging from 1.5 at.% to 5 at.% was magnetron-sputtered to determine the influence of Cr additions on the martensite transformation temperature of non-stoichiometric Co2NiGa-b
Autor:
Peter M. Kadletz, Yahya Motemani, Jutta Rogal, Christoph Somsen, Kunyen Liao, Jan Frenzel, Ralf Drautz, Alberto Ferrari, Wolfgang W. Schmahl, Dennis Langenkämper, Yury Lysogorskiy, Alfred Ludwig, Tanmoy Chakraborty, Alexander Paulsen
Publikováno v:
Shape Memory and Superelasticity. 5:6-15
The structural characterization of the various phases that occur in Ti–Ta-based high-temperature shape-memory alloys is complicated by the presence of many competing phases as a function of composition. In this study, we resolve apparent inconsiste
Autor:
Steffen Salomon, Peer Decker, Alfred Ludwig, Volodymyr A. Chernenko, I. R. Aseguinolaza, J.M. Barandiarán, V. Alexandrakis
Publikováno v:
Scripta Materialia. 156:101-104
Hysteresis of martensitic transformations (MTs) is a crucial factor which affects the efficiency and lifetime of actuators and magnetocaloric devices. In the present work we found a tenfold reduction of the thermal hysteresis of MT caused by increasi
Publikováno v:
Journal of Alloys and Compounds. 766:1080-1085
Atom probe tomography was combined with transmission electron microscopy to characterize in atomic detail the structure of nanocrystalline high entropy alloy CrMnFeCoNi thin films before and after exposure to air at 500 °C for 5 min. Mn and Cr oxide
Autor:
Alfred Ludwig, Xiao Wang
This review presents an overview of the developments in small-scale shape memory materials: from alloys to oxides and ceramics. Shape memory oxides such as zirconia, different ferroelectric perovskites and VO2-based materials have favorable character
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f682d1bdac4fc4ce320a292de6810390
https://hss-opus.ub.ruhr-uni-bochum.de/opus4/files/9470/LudwigAlfred26082020.pdf
https://hss-opus.ub.ruhr-uni-bochum.de/opus4/files/9470/LudwigAlfred26082020.pdf