Directional freeze-casting (FC) of powder suspensions followed by freeze-drying and sintering is a versatile scalable processing route for creating metallic foams with highly elongated pores. Because the high propensity oxidation metal powders, use precursor oxide powders studied here an additional step H2-reduction oxides to before sintering. However, large volume shrinkage due reduction cause...

Abstract Directional solidification occurs in industrial and natural processes, such as freeze-casting, metal processing, biological cryopreservation freezing of soils. Translational temperature gradient stage allows to control the process directional visualize it with optical microscope. In this velocity are decoupled independently controlled. Here we study dynamics phase transition interface ...

Bioderived polysaccharide-based cryogels prepared via freeze-casting method not only mimic the highly aligned anisotropic pore structure of plant stems but also offer other benefits as compared to biological structures, such lower density, higher porosity, better permeability, and thermal conductivity. However, application polysaccharide fabricate multifunctional composites is still at its infa...

introduction: the aim of this study was to evaluate the effect of bridge orientation in casting machine on castability and quality of base metal castings. methods: three groups of patterns with different direction and lengths in casting machine were casted and then studied qualitatively and quantitatively using mean and standard deviation in table of frequency. results: larger nodules and poros...

Needed for the custom-design of longitudinally freeze-cast chitosan scaffolds biomedical applications are systematic structure-property-processing correlations. Combining mechanical testing in compression with both scanning electron microscopy and semiautomated confocal a quantitative structural characterization fully hydrated scaffolds, robust correlations were determined. Decreasing applied c...

Biofilms were obtained from cocoons of the silkworm, Bombyx mori, involving removal sericin, extraction and solubilization fibroin fibers, dialysis dispersions preparation biofilms by casting process. Biofilm transparency was verified UV?Vis spectroscopy thermal stability thermogravimetric/differential scanning calorimetry (TG/DSC). Soon after preparation, solidification solution prepared extra...