Materials Literature
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Styrofoam has been widely used as an insulator and inpackaging. The disposal of these products creates environmental pollution because of their nondegradable nature. In this paper, a new formulation for recycling waster styrofoam which used for binder is introduced. Some additives, such as rosin resin, phenolic resin,…
In this study, Mg-Al-CO3 hydrotalcite was synthesized from a kaolinite as natural source aluminium using two simple methods. The first method uses the kaolinite in natural solid state, the second method use the filtrate of the kaolinite after dissolution by acidic solutions. The structure of the materials was characte…
The potential of multiple layer fibre‐reinforced mouldings is of growing interest to the rotational moulding industry because of their cost/performance ratio. The particular problem that arises when using reinforcements in this process relate to the fact that the process is low shear and good mixing of resin and reinf…
Ab initio free energy and rate calculations are performed to investigate two activated mobility processes observed, respectively, in neutron scattering and anelastic spectroscopy experiments on sodium alanates. The system is modeled as a Na(3)AlH(6) crystal hosting one hydrogen vacancy. We identify the process observe…
Single crystal barium phosphate and cadmium doped barium phosphate has been grown by a room temperature solution technique. Single crystal x-ray diffraction (XRD) establishes that the grown crystal belongs to the orthorhombic system. The dielectric and a.c conductivity properties were investigated thoroughly with rega…
In this work, we make efforts to understand how the stability of a polymer is influenced by the presence of metal nanoparticles. Experimental results from binary systems of Fe nanoparticles with polyethylene glycol (PEG), polypropylene glycol (PPG) and polytetrafluoroethylene (PTFE) revealed several novel and unexpect…
We describe the capsulation of colloidally templated polythiophene (P3-TAA) arrays with multi-walled carbon nanotubes (MWNTs) after colloidal template electropolymerization. The dissolution of the polystyrene (PS) particle templates, which were assembled via the Langmuir-Blodgett (LB)-like technique, allowed the forma…
Partial Discharge (PD) happened in GIS may induce the failure of the apparatus and endanger the safety of the grid. Detection of PD with UHF sensor can find the defect earlier. In this a paper, a de-noising method based on the wavelet method is introduced to improve the accuracy of PD detection. The general wavelet de…
The structure of clusters of some new carbon 3D-graphite phases have been calculated using the molecular-mechanics methods. It is established that 3D-graphite polytypes α1, 1, α1, 3, α1, 5, α2, 1, α2, 3, α3, 1, β1, 2, β1, 4, β1, 6, β2, 1, and β3, 2 consist of sp 2-hybridized atoms, have hexagonal unit cells, and diffe…
The electronic structure (band structure, DOS and COHP) of the delafossite nitride AgTaN2 was investigated on the basis of density-functional theory using the generalized-gradient approximation (GGA). AgTaN2 is predicted to be a semiconductor with an indirect band gap. The characters of the top of the valence band and…
In this study, we have demonstrated the structural and optical characterization of ZnO nanoporous structure grown on gold coated plastic substrate using low temperature aqueous chemical growth (ACG) technique and the annealing temperature was kept at 150° C. ZnO nanoporous structures were fabricated using hydrolysis p…
We apply an atomistic modeling approach to deal with interfacial phenomena in high‐density uranium fuels. The effects of Si, as additive to Al or as U‐Mo‐particles coating, on the behavior of the Al/U‐Mo interface is modeled by using the Bozzolo‐Ferrante‐Smith (BFS) method for alloys. The basic experimental features c…
We report, for the first time, the scattering, absorption, and reflection characteristics of 2D arrays of finite-length, armchair, single-walled carbon nanotubes (SWNTs) in the visible frequency regime. The analysis is based on the Finite-Element-Method formulation of Maxwell's equations and a 3D quantum electrical co…
Catalysts containing 10 wt.% of Pt and MnO2 supported on coated metallic foams by γ−alumina were examined for H2O2 decomposition. Catalysts were prepared by impregnation of a high-porous γ−alumina (coating layer) surface area. Surface area measurements, SEM micrographs, and H2 chemisorption gave evidence of a uniform…
1,3-Diazabicyclo[3.1.0]hex-3-ene systems represent a very interesting class of organic materials, possessing unique photochromic properties in the solid state. It has been demonstrated that these compounds form deeply colored, fairly stable materials under UV radiation. Here, for the first time we report synthesis of…
Cadmium meta- and orthostannate were synthesized by thermal treatment using the coprecipitation method. Tin (IV) chloride, cadmium acetate were used as the initial components, the ammonium carbonate was a precipitant. The coprecipitated compounds and the thermolysis products were analyzed by TGA/DSC methods, the therm…
As a preparation method of proton conducting BaCe1−xYxO3−δ, solid state reaction method and liquid phase mixing one from same raw materials have been compared. By solid state reaction of BaCO3, CeO2 and Y2O3, segregation of Y2O3 was observed in the specimens with x larger than 0.15. Employing liquid phase mixing metho…
Textured (K0.5Na0.5)NbO3 (KNN) ceramics was fabricated via the reactive templated grain growth (RTGG) method with the plate-like NaNbO3 (NN) particles as templates. High orientation degree (Logering's factor) of 84% calculated from XRD patterns was obtained. The microstructure of the surface of KNN ceramics is observe…
CMAS (Calcium-Magnesium-Aluminosilicate) has shown to induce some deleterious effects on yittria-stabilized-zirconia (YSZ) based thermal barrier coatings (TBCs) of hot section components of aeroengines. The effects were shown to be dependent on the types and operating conditions of engines/components. The work present…
The porous CuO nanorods were prepared through calcination of the precursor which was obtained from hydrolysis of Cu(NO3)2 and urea solutions at 130°C for 4 h on hydrothermal condition. The structure and morphology of porous CuO nanorods were characterized by scanning electron microscope (SEM), transmission electron mi…