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Dive into the research topics where Stefan Rannabauer is active.

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Featured researches published by Stefan Rannabauer.


Materials | 2017

Improving the Strength of ZTA Foams with Different Strategies: Immersion Infiltration and Recoating

Xiaodong Chen; Ulf Betke; Stefan Rannabauer; Paul Peters; Gerrit Söffker; Michael Scheffler

The combination of high strength and toughness, excellent wear resistance and moderate density makes zirconia-toughened alumina (ZTA) a favorable ceramic, and the foam version of it may also exhibit excellent properties. Here, ZTA foams were prepared by the polymer sponge replication method. We developed an immersion infiltration approach with simple equipment and operations to fill the hollow struts in as-prepared ZTA foams, and also adopted a multiple recoating method (up to four cycles) to strengthen them. The solid load of the slurry imposed a significant influence on the properties of the ZTA foams. Immersion infiltration gave ZTA foams an improvement of 1.5 MPa in compressive strength to 2.6 MPa at 87% porosity, only resulting in a moderate reduction of porosity (2–3%). The Weibull modulus of the infiltrated foams was in the range of 6–9. The recoating method generated an increase in compression strength to 3.3–11.4 MPa with the reduced porosity of 58–83%. The recoating cycle dependency of porosity and compression strength is nearly linear. The immersion infiltration strategy is comparable to the industrially-established recoating method and can be applied to other reticulated porous ceramics (RPCs).


Chemie Ingenieur Technik | 2016

Micro-Macroporous Composite Materials: SiC Ceramic Foams Functionalized With the Metal Organic Framework HKUST-1

Ulf Betke; Steven Proemmel; Jakob G. Eggebrecht; Stefan Rannabauer; Alexandra Lieb; Michael Scheffler; Franziska Scheffler


Microporous and Mesoporous Materials | 2017

Silane functionalized open-celled ceramic foams as support structure in metal organic framework composite materials

Ulf Betke; Steven Proemmel; Stefan Rannabauer; Alexandra Lieb; Michael Scheffler; Franziska Scheffler


Advanced Engineering Materials | 2017

Reticulated Replica Ceramic Foams: Processing, Functionalization, and Characterization

Tobias Fey; Ulf Betke; Stefan Rannabauer; Michael Scheffler


Materials Letters | 2016

Manufacturing of an electrically conducting cellular Cu-SiC material by metal salt infiltration and chemical reduction (MESCAL)

Ulf Betke; Kashyapa S.K. Sharma; Andreas Rodak; Stefan Rannabauer; Alexandra Lieb; Franziska Scheffler; Michael Scheffler


Journal of The European Ceramic Society | 2014

Hierarchically structured glass monoliths based on polyurethane foams as template

Bjoern Reinhardt; Jan Herwig; Stefan Rannabauer; Michael Scheffler; Dirk Enke


Advanced Engineering Materials | 2017

Impact of Slurry Composition on Properties of Cellular Alumina: A Computed Tomographic Study†

Ulf Betke; Sebastian Dalicho; Stefan Rannabauer; Alexandra Lieb; Franziska Scheffler; Michael Scheffler


Advanced Engineering Materials | 2017

Increased Mechanical Stability and Thermal Conductivity of Alumina Reticulated Porous Ceramics (RPC) by Nanoparticle Infiltration Processing

Stefan Rannabauer; Gerrit-Maximilian Söffker; Marcel Scheunemann; Ulf Betke; Michael Scheffler


Advanced Engineering Materials | 2014

A novel approach for the processing of advanced polymer derived ceramics with carbon nanotubes with the help of pores

Niko Mantzel; Stefan Rannabauer; Ethel C. Bucharsky; Karl G. Schell; Michael J. Hoffmann; Michael Scheffler


Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science | 2015

Polymer-Derived Ceramics as Innovative Oxidation Barrier Coatings for Mo-Si-B Alloys

Georg Hasemann; Torben Baumann; Sebastian Dieck; Stefan Rannabauer; Manja Krüger

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Dive into the Stefan Rannabauer's collaboration.

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Michael Scheffler

Otto-von-Guericke University Magdeburg

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Ulf Betke

Otto-von-Guericke University Magdeburg

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Alexandra Lieb

Otto-von-Guericke University Magdeburg

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Franziska Scheffler

University of Erlangen-Nuremberg

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Anna Fedorova

Otto-von-Guericke University Magdeburg

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Georg Hasemann

Otto-von-Guericke University Magdeburg

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Manja Krüger

Forschungszentrum Jülich

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Sebastian Dieck

Otto-von-Guericke University Magdeburg

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Steven Proemmel

Otto-von-Guericke University Magdeburg

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Torben Baumann

Otto-von-Guericke University Magdeburg

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