Directional Solidification with Constant Ice Front Velocity in the Ice-Templating Process
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Stolze, Christian; Janoschka, Tobias; Schubert, Ulrich S.; Müller, Frank A.; Flauder, Stefan
- Abstract:
- An exponential cooling function for the directional solidification of liquids with constant ice front velocities is investigated with respect to an enhanced control over the ice-templating process. It is mathematically derived and set into relation to other cooling functions found in literature. A theoretical limit of applicability is discussed and a mathematical expression for the maximum sample size realizable with this new approach is derived. Experimental results from the time-resolved direct measurement of the ice front evolution during the directional solidification of pure water and a ceramic β-tricalcium phosphate (β-TCP) suspension in a cooling room environment are presented. These results are compared to the results of numerical simulations. Ice front velocities from 10 to 50 µm s–1 are realized.
- Year:
- 2016
- Type of Publication:
- Article
- Journal:
- Advanced Engineering Materials
- Volume:
- 18
- Pages:
- 111 - 120
- DOI:
- 10.1002/adem.201500235