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  4. Evaluation of the pore morphology formation of the Freeze Foaming process by in situ computed tomography
 
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2018
Journal Article
Title

Evaluation of the pore morphology formation of the Freeze Foaming process by in situ computed tomography

Other Title
Auswertung der Porenmorphologie-Entstehung des Gefrierschäumverfahrens durch in-situ Computer Tomographie
Abstract
The so-called Freeze Foaming method aims at manufacturing ceramic cellular scaffolds for diverse applications. One application is dedicated to potential bone replacement material featuring open, micro and interconnected porosity. However, the main challenges of this foaming method is to achieve a homogeneous pore morphology. In a current project, the authors throw light on the bubble/pore and strut formation of this process by in situ computed tomography. This allows for evaluating varying process parameter's effects on the growth of the ceramic foam during the foaming process. As first result and basis for CT analysis, a stable and reproducible model suspension was developed which resulted in reproducible foam structures. In dependence of selected process parameters like pressure reduction rate or air content in the ceramic suspension resulting Freeze Foams became adjustable with regard to their pore morphology. Pore size and distribution data as well as the porosity were characterized and evaluated accordingly.
Author(s)
Ahlhelm, Matthias  
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS  
Werner, David  orcid-logo
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS  
Maier, Johanna
TU Dresden
Abel, Johannes  
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS  
Behnisch, Thomas
TU Dresden
Moritz, Tassilo  
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS  
Michaelis, Alexander  orcid-logo
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS  
Gude, Maik
TU Dresden
Journal
Journal of the European Ceramic Society  
Funder
Deutsche Forschungsgemeinschaft DFG  
Open Access
File(s)
Download (747.69 KB)
DOI
10.1016/j.jeurceramsoc.2018.02.031
10.24406/publica-r-252148
Language
English
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS  
Keyword(s)
  • freeze foaming

  • bioceramics

  • foaming process

  • in-situ CT

  • none destructive testing

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