  Freeze-casting, the templating of porous structure by the solidification of a
solvent, have seen a great deal of efforts during the last few years. Of
particular interest are the unique structure and properties exhibited by porous
freeze-casted ceramics, which opened new opportunities in the field of cellular
ceramics. The objective of this review is to provide a first understanding of
the process as of today, with particular attention being paid on the underlying
principles of the structure formation mechanisms and the influence of
processing parameters on the structure. This analysis highlights the current
limits of both the understanding and the control of the process. A few
perspectives are given, with regards of the current achievements, interests and
identified issues.
