Results 251 to 260 of about 11,454 (269)

Cellulose nanowhisker foams by freeze casting

Carbohydrate Polymers, 2012
Abstract Cellulose nanowhisker foams with uniform layer structure were successfully prepared via freeze casting method. Here, we investigate the relationship between freezing rate, slurry concentration and the microstructure of the porous nanowhisker architecture.
Rajalaxmi Dash, Yang Li, Arthur J. Ragauskas   +2 more
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The Freeze Cast Process

SAE Technical Paper Series, 2000
<div class="htmlview paragraph">The Freeze Cast Process for casting precision automotive and other parts, freezes water in rubber molds to make temporary ice patterns that can be invested in ceramic slurries to make a shell that can be filled with any molten metal.
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Magnetic freeze casting inspired by nature

Materials Science and Engineering: A, 2012
Abstract Magnetic field aligned freeze casting is a novel method to fabricate porous, anisotropic ceramic scaffolds with a hierarchy of architectural alignment in multiple directions. A weak rotating magnetic field applied normal to the ice growth direction in a uniaxial freezing apparatus allowed the manipulation of magnetic nanoparticles to create ...
Michael M. Porter, Michael Yeh, James Strawson, Thomas Goehring, Samuel Lujan, Philip Siripasopsotorn, Marc A. Meyers, Joanna McKittrick   +7 more
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Freeze casting of porous Ni–YSZ cermets

Materials Letters, 2007
Abstract Dual-phase porous Ni–YSZ cermets were fabricated via the freeze casting of a ceramic/camphene slurry. After removing the frozen camphene via sublimation at room temperature, the green samples were sintered for 3 h in air at various temperatures, ranging from 1100 to 1350 °C, and then reduced in an Ar–5% H 2 atmosphere at 700 °C for 3 h. The
Young-Hag Koh, Jong-Jae Sun, Hyoun-Ee Kim   +2 more
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On controlling aerogel microstructure by freeze casting

Composites Part B: Engineering, 2019
Abstract Aerogels, the lightest solids with practicable mechanical properties and functionality, are rapidly expanding the family members and applications these years. The reason can be attributed to the simple and green preparation by freeze casting (FC) method and the excellent properties of the resultant materials.
Wang Liao, Hai-Bo Zhao, Zhiguo Liu, Shimei Xu, Yu-Zhong Wang   +4 more
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Novel oxide fiber composites by freeze casting

Journal of the European Ceramic Society, 2014
Abstract A freeze casting process with gelatine as gelling agent is presented to manufacture novel oxide fiber composites. The growth of ice crystals causes an in situ densification of the green matrix when the composite is frozen after the lamination of 2D-fabrics.
Thomas Wamser, Sven Scheler, Bernd Martin, Walter Krenkel   +3 more
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Structure–property-processing correlations in freeze-cast composite scaffolds

Acta Biomaterialia, 2013
Surprisingly few reports have been published, to date, on the structure-property-processing correlations observed in freeze-cast materials directionally solidified from polymer solutions, or ceramic or metal slurries. The studies that exist focus on properties of sintered ceramics, that is materials whose structure was altered by further processing. In
Philipp M, Hunger, Amalie E, Donius, Ulrike G K, Wegst   +2 more
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Platelets self-assemble into porous nacre during freeze casting

Journal of the Mechanical Behavior of Biomedical Materials, 2013
Nacre possesses a remarkable combination of mechanical properties. Its high stiffness, strength and toughness are attributed to a highly aligned structure of aragonite platelets "glued" together by a small fraction (∼5vol%) of polymer; theoretically it can be described by a shear-lag model of staggered tensile elements between which loads are ...
Philipp M, Hunger, Amalie E, Donius, Ulrike G K, Wegst   +2 more
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Bubble freeze casting artificial rattan

Chemical Engineering Journal, 2022
Huawen Liu, Junjie Jiang, Wentao Zhai
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Freeze-cast hydroxyapatite scaffolds for bone tissue engineering applications

Biomedical Materials, 2008
Freeze casting of aqueous suspensions was investigated as a method for preparing porous hydroxyapatite (HA) scaffolds for eventual application to bone tissue engineering. Suspensions of HA particles (10-20 volume percent) were frozen unidirectionally in a cylindrical mold placed on a cold steel substrate (-20 degrees C).
Qiang, Fu, Mohamed N, Rahaman, Fatih, Dogan, B Sonny, Bal   +3 more
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