Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Deriving the Principles of the Freeze Foaming Process by CT evaluation of Cellular Bioceramics

 
: Ahlhelm, Matthias; Werner, David; Kaube, Nils; Maier, Johanna; Abel, Johannes; Behnisch, Thomas; Moritz, Tassilo; Michaelis, Alexander; Gude, Maik

:
Volltext urn:nbn:de:0011-n-5033518 (7.6 MByte PDF)
MD5 Fingerprint: b989befe3526e482994c95b31758f848
Erstellt am: 24.7.2018


Ceramics. Online journal 1 (2018), Nr.1, S.65-82
http://www.mdpi.com/journal/ceramics
ISSN: 2571-6131
Deutsche Forschungsgemeinschaft DFG
310892168
Erarbeitung der Gesetzmäßigkeiten der Schaumstrukturbildung im Gefrierschäumprozess biokompatibler Keramikschäume
Englisch
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer IKTS ()
Freeze Foaming; Bioceramics; Foaming process; Computed Tomography; None destructive testing; Cellular ceramics

Abstract
Freeze Foaming is a direct foaming method, which aims at manufacturing ceramic cellular scaffolds for diverse applications. Next to porous structures for a potential use as refractories the focus lies on potential bone replacement material. The main challenge of this foaming method is to achieve a homogeneous and predictable pore morphology. That is why, in a current project the authors report on the pore morphology formation and evolution of the very foaming process by means of nondestructive testing. This contribution primarily compares the effect of the suspension’s temperature on the resulting foam structure (foaming at 5 ° and 40 °C). As a basis for computed tomographic analysis, stable and reproducible model suspension were developed which resulted in reproducible foam structures. Characterized by viscosity, foam structure analyses and foaming rate, resulting Freeze Foams became adjustable with regard to their porosity and furthermore, influenceable with regard to their pore shape and size. Under certain conditions, we succeeded in achieving a relatively homogeneous pore structure proven by computed tomography-derived quantitative analysis.

: http://publica.fraunhofer.de/dokumente/N-503351.html