Compressive mechanical properties of low-density, open-cell Zr-based bulk metallic glass foams processed by the salt replication method are investigated as a function of relative density and pore size in the ranges 14–28% and 150–355 lm, respectively. Scaling behaviors for strength and stiffness are discussed in the context of models developed for conventional metal foams, and appropriate modif...

The effects of a chelating surfactant and different foaming agents on the efficiency of cleaning process waters from a thermomechanical pulp (TMP) mill were studied in a Voith flotation cell. Turbidity measurements and gas chromatography were used to determine the removal extent and characteristics of dissolved and colloidal substances (DisCo). The metal ion content in the process waters before...

Green nanotechnology focuses on the development of new and sustainable methods of creating nanoparticles, their localized assembly and integration into useful systems and devices in a cost-effective, simple and eco-friendly manner. Here we present our experimental findings on the use of the Leidenfrost drop as an overheated and charged green chemical reactor. Employing a droplet of aqueous solu...

Six Sigma DMAIC methodology has been applied to systematically apply lean manufacturing concepts and tools in order to improve productivity in a local company specialized in the manufacturing of safety and fire resistance metal doors, windows, and frames. In-depth analysis of the plant processes unfolded different critical processes, specifically foam injection process and sheet metal cutting p...

Metallic foams have good potential for lightweight structures for impact and blast mitigation. Therefore it is important to find out the optimized foam structure (i.e. cell size, shape, relative density, and distribution) to maximise energy absorption. In this paper, quasistatic compression and microstructural characterization of closed-cell aluminium foams of different pore size and cell distr...

A metamaterial structure formed by foamed metal and starch and oil-based electrorheological (ER) fluid is designed in this paper. Experiments show that the metamaterial structure exhibits a regulation effect on the amplitude and phase of the transmitted waves of 35–80 kHz ultrawideband ultrasonic waves in water. With the increase of the electric field, the transmission amplitude and phase of th...

Microstructural observations and compressive property datasets of metal matrix syntactic foam core sandwich composite at quasi-static and high strain rate (HSR) conditions (525-845 s(-1)) are provided. The data supplied in this article includes sample preparation procedure prior to scanning electron and optical microscopy as well as the micrographs. The data used to construct the stress-strain ...

Utilization of open-cell metal foams in functional applications such as energy absorption, noise absorber, heat insulator, and lightweight panels is trending many industrial applications. The development reliable joining technologies for sandwiched crucial thermal application one the techniques used brazing process. In current work, copper foam was between a plate using amorphous filler Cu-9.7S...

Due to the isotropy and high thermal conductivity of metal foam, a novel idea isothermal chamber filled with graded copper foam (GCF) is developed improve characteristic chamber. Firstly, an analytical effective (ETC) prediction model proposed, relative root-mean-square error (RRMSE) 6.90%, which has higher ETC accuracy than semi-empirical models in literatures. Secondly, conventional porous ra...

Metal foam is a novel material recently utilized in baffles as an alternative to solid for reducing flow resistance. However, the metal are accompanied by low heat transfer efficiency. To overcome this issue, new design of copper has been suggested research, called having gradient pore density foam. The either increases or decreases towards wall. So, experimental tests were carried out square c...