The remarkable stability of particle-stabilized foams and the opportunity to use them for production of novel porous materials have been attracting the researchers' attention in the recent years. The major aim of the current study is to clarify the factors, controlling the foamability and stability of foams, formed from concentrated silica suspensions in the presence of the amphoteric surfactan...

Despite the recent efforts and progress on transition metal-based electrocatalysts for water splitting, it is still a challenge to fabricate oxygen evolution reaction with high performance, simultaneously via simple, facile, environment-friendly way. Herein, we report facile strategy fabrication of NiFe oxides-based micro/nano-structures Ni foams simple femtosecond laser ablation, where : Fe ra...

This paper reports the results of a study concerned with air–water and air–oil two-phase flow in channels packed open-cell metal foams. The research was conducted horizontal channel an internal diameter 0.02 m length 2.61 m. analysis applied three foams pore density 20, 30, 40 PPI porosity typical for industrial applications, changing range 92–94%. experimental data were used to develop new met...

Abstract Cellular materials, in particular metal or polymer foams and beam lattices, are characterized by a complex architecture where the material is concentrated slender struts. This study concerned with construction of numerically efficient sample‐specific digital twin for analysis characterization mechanical behavior such meta‐materials. A method to build an explicit, light, analysis‐suitab...

Few foam systems stabilized by solid particles have been reported, and usually the particles have been used in combination with surfactants. We report how foams can be stabilized solely with a new class of anisotropic particles, hydrophobic polymer microrods of diameter less than 1 mum and length of a few tens of micrometers. The obtained foams were extraordinary stable, retaining a constant vo...

Natural fibre reinforced polylactic acid (PLA) foams, as potential green replacements for petroleum-based polymer foams, were investigated. Highly porous (ε > 95%) microcellular PLA foams were manufactured by supercritical CO2 assisted extrusion process. To overcome the inherent low melt strength of PLA, epoxyfunctionalized chain extender was applied, while talc was added to improve its crystal...

We study diamagnetically levitated foams with widely different liquid fractions. Due to the levitation, drainage is effectively suppressed and the dynamics is driven by the coarsening of the foam bubbles. For dry foams, the bubble size is found to increases as the square root of foam age, as expected from a generalized von Neumann law. At higher liquid content the behavior changes to that of Os...

An easy method that combined gel casting and physical foaming was used to fabricate modified carbon foams. The design of carbon foams from sucrose/polyacrylamide hydrogel is a new concept for controlling the microstructure and improving the compressive properties of carbon foams. This article provides the micrographs obtained from optical and scanning electron microscope for foaming solution an...

AbstractIn this paper, we investigate effect of Fe–intermetallic compounds on plastic deformation of closed-cell composite Aluminum Foam as filler of thin-walled tubes. However, deformation of the Aluminum foam-filled thin-walled tubes as crushed-box will be presented in Part (II). Composite foams of AlSi7SiC3 and AlSi7SiC3-(Fe) as closed cell were synthesized by powder metallurgy foaming metho...

In this study, we report a procedure for producing syntactic steel foams by melt infiltration of millimeter-sized ceramic microspheres. The gravity-fed infiltration method yields steel foam with uniform distributions of microspheres and negligible unintended porosity. The critical parameters in the manufacturing process are the melt temperature and the preheat temperature of the microspheres pr...