Ice-templated porous alumina structures

By Sylvain Deville, E. Saiz, A. Tomsia. 2007

740 citations recorded by the source corpus.

The formation of regular patterns is a common feature of many solidification processes involving cast materials. We describe here how regular patterns can be obtained in porous alumina by controlling the freezing of ceramic slurries followed by subsequent ice sublimation and sintering, leading to multilayered porous alumina structures with homogeneous and well-defined architecture. We discuss the relationships between the experimental results, the physics of ice, and the interaction between inert particles and the solidification front during directional freezing. The anisotropic interface kinetics of ice leads to numerous specific morphological features in the structure. The structures obtained here could have numerous applications, including ceramic filters and biomaterials, and could be the basis for dense multilayered composites after infiltration with a selected second phase.

Subfields: Ceramics and Composites, Materials Chemistry, Spectroscopy

View Paper: https://www.semanticscholar.org/paper/2849023947017b175c7443c17de6ce5a9f3fc6e6

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Ceramics and Composites

1. Thomas Waschkies
2. M. Hoffmann
3. R. Oberacker
4. Sylvain Deville

In Materials Chemistry

1. Yu Zhou
2. D. Jia
3. Zhuo Zhang
4. P. He
5. Baofu Qiu
6. X. Duan
7. Zhihua Yang
8. Delong Cai

In Spectroscopy

1. Thomas Waschkies
2. M. Hoffmann
3. R. Oberacker
4. Sylvain Deville

Citations in the corpus

• Freeze-Casting of Porous Biomaterials: Structure, Properties and Opportunities (2010, background): “reference [53], figure 10 of reference [54], figure 9 of reference [55], figure 12 of reference [56], figure 8 of reference [57], figure 6a-b of reference [58], and figure 2 of reference [59].”
• Freeze‐Casting of Porous Ceramics: A Review of Current Achievements and Issues (2008, methodology): “…[23] Araki et al., 2005 Alumina 400 nm Camphene Mould with bottom part immersed in freezing bath Cooling from 55°C down to RT Yes 5-20 m 1600°C [24] Deville et al., 2006, 2007 Alumina 400 nm Water Temperature gradient Cooling from RT to -100°C Yes 2-200 m 1500°C [17, 25] Koh et al., 2006…”