Image data analysis of high resolution μCT data for the characterization of pore orientation and pore space interconnectivity in freeze cast ceramics
Veröffentlichungsdatum
2021-02-25
Zusammenfassung
Unidirectional and non-unidirectional freeze cast SiOC monoliths were characterized by means of digital image processing. For this purpose a novel method of pore segmentation in complex dendritic pore morphologies was developed. For the first time, the proposed method made it possible to perform an extensive geometrical and structural pore space characterization and analysis on single pore level. The orientation of the primary dendritic channels was obtained from high resolution μCT images. Based on the mean directional vector distribution, the pore space was segmented. As a result, 95% (unidirectional) and 88% (non-unidirectional) of the original binary pore volume could be allocated to individual pores. The pore interconnectivity could be derived from this segmented pore space. It has been shown that the degree of interconnectivity between pores of the same orientation is higher than between pores of different orientation. This could be the reason for peculiar wicking behavior in non-unidirectional samples.
Schlagwörter
Pore space characterization
;
Pore space interconnectivity
;
Pore space orientation
;
High-resolution μCT
;
Freeze-casting
;
Porous monoliths
;
Mimenima
Verlag
Elsevier
Institution
Dokumenttyp
Artikel/Aufsatz
Zeitschrift/Sammelwerk
Band
174
Zweitveröffentlichung
Ja
Dokumentversion
Postprint
Sprache
Englisch
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Name
Th. Ilzig, D. Schumacher, M. Wilhelm, St. Guenther, St. Odenbach - Image data analysis of high resolution µCT data_2021_accepted version_Deckblatt_pdfa1.pdf
Size
3.05 MB
Format
Adobe PDF
Checksum
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