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DF: Dielektrische Festkörper

DF 4: Internal Symposium “Ferroelectric Materials for Smart Structures”

DF 4.6: Vortrag

Dienstag, 28. März 2006, 11:30–11:50, K{\"O}N Farb

Pore network analysis of ceramic foams by means of synchrotron tomography — •A. Haibel¹, H. Freidank¹, and A. Berthold² — ¹Hahn-Meitner Institute Berlin — ²Technical University Berlin

Due to their interconnected pore structure ceramic foams emulate well the natural configuration of human bones. In this talk we present protein based prepared ceramic foams. Biopolymers and ceramic powder mixed to a ceramic foam suspension generate a foam structure in a microwave reactor. Subsequent to the microwave coagulation the foams sinter at 1600^∘C. These foams act as substrates for the cultivation of stem cells. By means of high resolved synchrotron tomography experiments we investigated the effect of the different preparation techniques on the pore accruement and growth of such ceramic foams. By 3D image analysis of the tomographic images we analyzed the influence of coagulation and sintering on the pore size and shape, e. g. the influence of the different dispersing agents on the pores, the diameters of interconnections, and the wall and vessel thicknesses. The knowledge of this parameters allows the realization of ideal cell growth conditions at the artificial environment.