The influence of the matrix material on the deformation and failure mechanisms in metal matrix syntactic foams was investigated in this study. Samples with commercially pure Al (Al) and Al-12 wt % Si (AlSi12) eutectic aluminum matrix, reinforced by hollow ceramic spheres, were compressed at room temperature. Concurrently, the acoustic emission response and the strain field development on the su...

Open-celled aluminum foams with different pore sizes were fabricated. A plasma electrolytic oxidation (PEO) treatment was applied on the aluminum foams to create a layer of ceramic coating. The sound absorption coefficients of the foams were measured by an impedance tube and they were calculated by a transfer function method. The experimental results show that the sound absorption coefficient o...

The development of bioactive glass-ceramic materials has been a topic of great interest aiming at enhancing the mechanical strength of traditional bioactive scaffolds. In the present study, we test and demonstrate the use of Biosilicate® glass-ceramic powder to fabricate bone scaffolds by the foam replica method. Scaffolds possessing the main requirements for use in bone tissue engineering (95%...

Porous ceramic materials have found widespread technological and industrial applications from filtration, absorption, catalysts and catalyst supports to lightweight structural components. In the present work, processing is based on the generation of foam from an aqueous suspension of ceramic powder and the subsequent stabilization of the structure by in-situ polymerization of organic monomers. ...

The paper deals with the dust cleaning system at construction industry, in particular, production of granulated foam glass ceramics. analysis companies’ activity and their harmful emissions has been carried out. applied methods protecting working areas from dust, effectiveness need for use various industries have studied. It is proposed to make changes used ceramic foam. To increase degree clea...

Abstract One of the major tasks underwater warfare is to detect objects such as vehicles, vessels, weapons and equipment. The conduct mostly depends upon advancement detection identification sensors materials. wide variation in types characteristics materials may affect capabilities despite recently developed sonar systems. with high porosity are known provide lower acoustical signature than co...

Aluminum syntactic foams with densities of 1.2–1.5 g/cm3 were deformed at 500 ◦C under constant uniaxial compressive stresses ranging from to 14 MPa. The foam creep behavior is characterized by a short primary stage and a long secondary stage where the strain rate is constant and inimum, followed by a tertiary stage at high stresses. The minimum strain rate varies with stress according to an ap...

Transport phenomena in porous media are pertinent to thermal and thermochemical processes for power and fuel generation using concentrated solar energy. The porous media serve as insulator, radiant absorbers, heat exchangers, catalyst carriers, reactants, and/or reaction sites. Volume-averaging models for porous media, commonly applied for process simulations and optimization, rely heavily on t...

Correlations that allow determination of gas film mass transfer coefficients (kGat , kGaw) and liquid film mass transfer coefficients (kLaw) for packing materials used in biofilters and biotrickling filters for air pollution control are presented. Lava rock, polyurethane foam cubes (PUF), Pall rings, porous ceramic beads, porous ceramic Raschig rings, and various compost–woodchips mixtures were...