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Fakultätsübergreifendes Institut für Werkstofftechnik


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Publikationen

im Institut für Werkstofftechnik

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Halbedel, Bernd; Kazak, Oleg
Potenziale eines neuen Mahlverfahrens - die elektromechanische Zerkleinerung. - In: Chemie - Ingenieur - Technik : CIT. - Weinheim : Wiley-VCH Verl, ISSN 15222640, Bd. 90 (2018), 4, insges. 13 S.
First published: 16 February 2018

Die elektromechanische Zerkleinerung (EMZ) hat aufgrund der Nutzung von hartmagnetischen Mahlkörpern und deren intensive Bewegung mit sich ändernden Magnetfeldern große Potenziale, nicht nur hohe Produktfeinheiten zu erzielen, sondern vor allem den Energiebedarf bei der Zerkleinerung signifikant zu senken. Zur Evaluierung dieser Potenziale wurden die Magnetfeldverteilung im Prozessraum simuliert, die Mahlkörperbewegung experimentell analysiert sowie Zerkleinerungsexperimente mit verschiedenen Materialien durchgeführt. Aus den Ergebnissen wurden Abhängigkeiten zur Auslegung von EMZ-Anlagen abgeleitet. (Electromechanical milling (EMZ) is the process of using intensively moving hard magnetic milling beads together with time variable and location variable magnetic fields. EMZ is an excellent milling method to use when extremely fine materials are required. An added benefit of EMZ is that energy consumption is significantly decreased. To evaluate the effectiveness of EMZ, we simulated the most effective magnet field distribution, we analyzed the milling bead movement, and we performed experiments with various materials. In this work, we discuss the results of our findings.)


https://doi.org/10.1002/cite.201700103
Schoetz, Theresa; Ponce de Leon, Carlos; Bund, Andreas; Ueda, Mikito
Electro-polymerisation and characterisation of PEDOT in Lewis basic, neutral and acidic EMImCl-AlCl3 ionic liquid. - In: Electrochimica acta : the journal of the International Society of Electrochemistry (ISE). - New York, NY [u.a.] : Elsevier, Bd. 263 (2018), S. 176-183
Im Titel ist "3" tiefgestellt
https://doi.org/10.1016/j.electacta.2018.01.033
Sauerteig, Daniel; Hanselmann, Nina; Arzberger, Arno; Reinshagen, Holger; Ivanov, Svetlozar; Bund, Andreas
Electrochemical-mechanical coupled modeling and parameterization of swelling and ionic transport in lithium-ion batteries. - In: Journal of power sources : the international journal on the science and technology of electrochemical energy systems. - New York, NY [u.a.] : Elsevier, ISSN 18732755, Bd. 378 (2018), S. 235-247
https://doi.org/10.1016/j.jpowsour.2017.12.044
Dyck, Tobias; Bund, Andreas
Design of contact systems under consideration of electrical and tribological properties. - In: IEEE transactions on components, packaging and manufacturing technology. - New York, NY : IEEE, ISSN 21563950, (2018), insges. 12 S.
https://doi.org/10.1109/TCPMT.2017.2788378
Lacitignola, Deborah; Bozzini, Benedetto; Peipmann, Ralf; Sgura, Ivonne
Cross-diffusion effects on a morphochemical model for electrodeposition. - In: Applied mathematical modelling : simulation and computation for engineering and environmental systems. - Amsterdam [u.a.] : Elsevier Science, (2018), insges. 22 S.
Available online 2 February 2018, In Press, Corrected Proof - Note to users
https://doi.org/10.1016/j.apm.2018.01.005
Hesamedini, Sanaz; Bund, Andreas
Formation of Cr(VI) in cobalt containing Cr(III)-based treatment solution. - In: Surface and coatings technology. - Amsterdam [u.a.] : Elsevier Science, ISSN 02578972, Bd. 334 (2018), S. 444-449
https://doi.org/10.1016/j.surfcoat.2017.12.006
Reiß, Stephanie; Grieseler, Rolf; Krischok, Stefan; Rädlein, Edda
The influence of Sahara sand on the degradation behavior of float glass surfaces. - In: Journal of non-crystalline solids : a journal on the chemical, electronic, optical and mechanical properties of glasses, amorphous semiconductors and metals, sol-gel materials, the liquid state of these solids and the processes by which they are formed. - Amsterdam [u.a.] : Elsevier Science, ISSN 00223093, Bd. 479 (2018), S. 16-28
https://doi.org/10.1016/j.jnoncrysol.2017.09.055
Rudloff, Johannes; Lang, Marieluise; Kretschmer, Karsten; Heidemeyer, Peter; Bastian, Martin; Koch, Michael
Analysis of pellet diameter and inorganic filler influences on the polymer melting behavior in planetary roller extruders. - In: AIP conference proceedings. - Melville, NY : Inst, ISSN 15517616, Bd. 1914 (2017), S. 080001, insges. 5 S.
https://doi.org/10.1063/1.5016741
Schötz, Theresa; Ponce de Leon, Carlos; Ueda, Mikito; Bund, Andreas
State of the art of rechargeable aluminum batteries in non-aqueous systems. - In: Journal of the Electrochemical Society : JES. - Pennington, NJ : Electrochemical Soc, ISSN 19457111, Bd. 164Bd. 164 (2017), 14, Seite A3499-A3502
https://doi.org/10.1149/2.0311714jes
Prikhna, Tetiana; Romaka, Vitaliy; Eisterer, Michael; Shapovalov, Andrii; Kozyrev, Artem; Grechnev, Gennadiy; Boutko, Viktor; Goldacker, Wilfried; Habisreuther, Tobias; Vakaliuk, Oleksii; Halbedel, Bernd
Structure and superconducting characteristics of magnesium diboride, substitution of boron atoms by oxygen and carbon. - In: IOP conference series / Materials science and engineering. - London [u.a.] : Institute of Physics, ISSN 1757899X, Bd. 279 (2017), S. 012023, insges. 8 S.

An x-ray analysis of MgB2-based materials shows that they contain MgB2 and MgO phases. According to a quantitative Auger analysis (taken after removing the oxidized surface layer by Ar ion etching in the microscope chamber) the MgB2 phase contains some amount of oxygen that approximately corresponds to the composition MgB2.2-1.7O0.4-0.6. Rietveld refinement of the MgB2 phase, based on EDX data with varying B/O content, leads to the composition MgB1.68-1.8O0.2-0.32. Ab-initio modelling of boron substitution by oxygen in MgB2 ([Delta]Hf =-150.6 meV/atom) shows that this is energetically favourable up to the composition MgB1.75O0.25 ([Delta]Hf =-191.4 meV/atom). In contrast to carbon substitution, where very small levels of doping can dramatically affect the superconducting characteristics of the material with concomitant changes in the electron density, oxygen substitution results in very little change in the superconducting properties of MgB2. The formation of vacancies at the Mg site of both MgB2 and substituted MgB1.75O0.25 was modelled as well, but has shown that such processes are energetically disadvantageous ([Delta]Hf of Mg0.875B2 and Mg0.75B1.75O0.25 are equal to -45.5 and -93.5 meV/atom, respectively).


https://doi.org/10.1088/1757-899X/279/1/012023