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MgB₂ superconducting films prepared by the aerosol deposition method

Title data

Glosse, Philipp ; Denneler, Stefan ; Kauffmann-Weiss, Sandra ; Oomen, Marijn ; Moos, Ralf:
MgB₂ superconducting films prepared by the aerosol deposition method.
Event: 6th International Congress on Ceramics (ICC6) , 21.-25.08.2016 , Dresden, Deutschland.
(Conference item: Conference , Speech )

Project information

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Project's official title
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Project financing: Bundesministerium für Bildung und Forschung

Abstract in another language

Magnesium diboride (MgB2) is a promising superconductor with working temperatures below 39 K. Several techniques are known to prepare MgB2 films, filaments or wires. The powder-in-tube technique is used commercially to produce multifilament conductors from in situ or ex situ prepared MgB2 powders. Physical vapor deposition is appropriate to coat substrates with MgB2 thin film. The Aerosol Deposition Method (ADM) is a spray-coating technique at room temperature used to produce films of brittle materials, mostly ceramics like Al2O3. Due to its ceramic-like mechanical properties, MgB2 can be deposited with this technique as well. For the ADM, fine powders with a particle size range between 0.1 to 10 μm are used as starting powders. A defined aerosol of these powders and a carrier gas is accelerated into a vacuum chamber. As soon as the particles collide with the substrate, they crack and a fine-grained film forms. Thus ADM thick films are mostly dense nanocrystalline coatings, where various materials can work as a substrate. In this study MgB2 films are formed by the ADM on substrates like glass, Al2O3, and nickel base alloys. Processing parameters and powder treatment strongly affect film thicknesses and the morphology of the as-deposited films. The film thickness of the first samples was about 5 μm. The influence of aerosol parameters like carrier gas type, gas flow and aerosol concentration is evaluated based on the quality of the deposited MgB2.

Further data

Item Type: Conference item (Speech)
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Research Institutions > Research Units > ZET - Zentrum für Energietechnik
Faculties > Faculty of Engineering Science > Chair Functional Materials
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Units
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 05 Sep 2016 07:47
Last Modified: 05 Sep 2016 08:43