Engineered porous ceramics using a directional freeze-drying process

Bettge, Martin; Niculescu, H.; Gielisse, P. J.

doi:10.1109/isse.2005.1490993

Cited by 10 publications

(14 citation statements)

References 18 publications

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“…References for the data: water [8, 12, 26, 27, 31, 33–38, 43–49, 51, 52, 55–61, 68, 69, 72–76, 81, 84, 86–92, 94–101, 103, 104, 111, 113, 116, 119, 124, 128–132, 134, 135], camphene [9, 29, 30, 42, 50, 64–67, 70, 80, 85, 93, 102, 105–109, 114, 115, 117, 118, 120–123, 125–127, 136], TBA [10, 32, 39–41, 53, 62, 63, 71, 77, 78, 82, 83, 110, 137]. The marker size is proportional to the pore size.…”

Section: Resultsmentioning

confidence: 99%

“…The papers analyzed cover a variety of materials including ceramics (alumina [8–11, 26, 28, 32, 36, 38, 43, 48, 54, 58, 77, 81, 89, 102, 104, 105, 111, 112, 131, 143], zirconia [49, 80, 100, 101, 103, 125–127], silicon carbide [45, 106, 130], silicon nitride [35, 69, 72, 75, 76, 79, 84, 87, 88, 128], mullite [90, 110, 124, 137], hydroxyapatite [12, 37, 44, 52, 61, 68, 78, 86, 91, 95–98, 107, 109, 113, 115, 120, 134, 135], tri-calcium phosphate [31, 40, 56, 117, 118], lead zirconate titanate (PZT) [39, 63, 74, 82, 83, 121, 122], barium titanate [73], silica/kaolinite [47], titania [24, 29, 50, 99], zirconium diboride [51], chromium carbide [42], sialon [64, 66], lithium iron phosphate [60], yttrium orthosilicate [57, 62], cermets [116, …”

Section: Methodsmentioning

confidence: 99%

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A meta-analysis of the mechanical properties of ice-templated ceramics and metals

Deville

Meille

Seuba

2015

Science and Technology of Advanced Materials

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Ice templating, also known as freeze casting, is a popular shaping route for macroporous materials. Over the past 15 years, it has been widely applied to various classes of materials, and in particular ceramics. Many formulation and process parameters, often interdependent, affect the outcome. It is thus difficult to understand the various relationships between these parameters from isolated studies where only a few of these parameters have been investigated. We report here the results of a meta analysis of the structural and mechanical properties of ice templated materials from an exhaustive collection of records. We use these results to identify which parameters are the most critical to control the structure and properties, and to derive guidelines for optimizing the mechanical response of ice templated materials. We hope these results will be a helpful guide to anyone interested in such materials.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

A meta-analysis of the mechanical properties of ice-templated ceramics and metals

Deville

Meille

Seuba

2015

Science and Technology of Advanced Materials

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“…In all cases, this initial nucleation and growth stage result in the presence of a structural gradient close to the cooling surface, corresponding to the progressive selection of the stable crystal structure 4 . Such a gradient has been reported numerous times, such as figure 2 of Bettge et al , 5 figure 12 of Moritz and Richter, 6 figure 8 of Moritz and Richter, 7 figure 6(a)–(b) of Sofie, 8 figure 2 of Yumin et al , 9 and a number of other studies. The presence of this structural gradient is explained by the initial conditions during the freezing stage, and is characterized by two distinct regions.…”

Section: Introductionmentioning

confidence: 81%

Influence of Particle Size on Ice Nucleation and Growth During the Ice‐Templating Process

Deville

Maire

Lasalle

et al. 2010

Journal of the American Ceramic Society

105

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The solidification behavior of suspensions of alumina particles during directional solidification is investigated here by in situ observations using X‐ray radiography and tomography. The objective of this study was to assess the influence of particle size on the solidification behavior of the suspensions during the early stages of solidification. Four powders with particle size in the range of 0.2–3.4 μm (median size) were investigated. Solidification is obtained by cooling at a constant rate, starting from room temperature. Attention is specifically paid to the nucleation and growth behavior of the ice crystals in these suspensions. We propose that the nucleation of ice crystals is controlled by the particle size, the surface of the particles acting as nucleation sites. Smaller particle size leads to a lower degree of supercooling because nucleation and growth can proceed at a higher temperature than with larger particles. The initial interface velocity is dependent on the degree of supercooling, and controls the extent of the initial structural gradient in the resulting porous materials.

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“…Organic/inorganic composites can also be processed by mixing a water-soluble polymer with the ceramic powder, and numerous examples have now been described, including HAP/collagen [ 44 ], HAP/gelatine [ 45 ], HAP/alginate [ 46 ], alginate/poly (lactic-co-glycolic acid)/calcium phosphate [ 47 ], poly(a-hydroxyacid)/bioglass [ 48 ], PDLLA/bioglass [ 49 ], silicate glass/poly(L-Lactide) [ 50 ]. Finally, it is worth mentioning the possible application to titanium, using either titanium particles [ 51 ] or titanium precursor such as TiH 2 [ 52 , 53 ], which are later converted to the pure metal during the heat treatment under vacuum. The freeze-casting process might eventually be a strong challenger to the current processing route for titanium foams used in biomedical systems.…”

Section: Processing Principles and Materialsmentioning

confidence: 99%

Freeze-Casting of Porous Biomaterials: Structure, Properties and Opportunities

2010

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The freeze-casting of porous materials has received a great deal of attention during the past few years. This simple process, where a material suspension is simply frozen and then sublimated, provides materials with unique porous architectures, where the porosity is almost a direct replica of the frozen solvent crystals. This review focuses on the recent results on the process and the derived porous structures with regards to the biomaterials applications. Of particular interest is the architecture of the materials and the versatility of the process, which can be readily controlled and applied to biomaterials applications. A careful control of the starting formulation and processing conditions is required to control the integrity of the structure and resulting properties. Further in vitro and in vivo investigations are required to validate the potential of this new class of porous materials.

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Engineered porous ceramics using a directional freeze-drying process

Cited by 10 publications

References 18 publications

A meta-analysis of the mechanical properties of ice-templated ceramics and metals

A meta-analysis of the mechanical properties of ice-templated ceramics and metals

Influence of Particle Size on Ice Nucleation and Growth During the Ice‐Templating Process

Freeze-Casting of Porous Biomaterials: Structure, Properties and Opportunities

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