Materials Literature
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The mixing required for post-mould gelatinisation of syntactic foams using starch as binder was studied. It was found that starch particles tend to adhere to hollow microspheres during mixing, forming agglomerates. A transition in the buoyancy of microsphere-starch phases was found at a particular volume fraction of s…
We have suggested ultrafine particle coating processes for preparing nanocrystalline particle coated alpha-alumina powders by a carbonate precipitation and thermal-assisted combustion route, which is environmentally friendly. The nanometric ammonium aluminum carbonate hydroxide (AACH) as a precursor for coating of alu…
Functionally graded materials (FGMs) are multi-component composites with a gradual change in composition and/or structure. ZrO2-Ni FGMs in the form of a bonding interlayer with thicknesses in the range 40–100 μm were capable of joining dense ZrO2 pieces (a) or ZrO2 to Ni specimens (b). The number of composition steps…
Cloaking devices designed using the coordinate transform approach were shown to be realizable, at least in principle, within the realm of electromagnetic metamaterials. In this paper we investigate the strictness of conditions imposed on the parameters of metamaterial cloaks by calculating the degree of wave scatterin…
Manganese(II) 9-molybdocobaltate(III) of the composition [Mn(H 2 O) 4 ] · [CoMo 9 O 27 (OH) 5 ] · 7H 2 O ( I ) has been synthesized for the first time and investigated using X-ray diffraction and thermal gravimetric analyses. Compound I crystallizes in the trigonal system with the following unit cell parameters: a = 1…
By using a focused laser beam, a silver-oxide thin film can be transformed into silver nanoparticles: these form an attractive material for surface-enhanced Raman scattering (SERS). The shape of the nanoparticles was shown to be controllable through changing the thickness of the film, and optimization of the film thic…
Biddulphia rhombus var. atlantica was erected by Frenguelli from waters of the South Atlantic Ocean. A revision of its syntype series was carried out with light microscopy, a lectotype was chosen and compared with the lectotype of Odontella rhomboides (= Zygoceros rhombus), and with the lectotype of Odontella rhombus…
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Dehydration of the LiI · 3H 2 O crystal hydrate in vacuum has been investigated at 20–25°C. The decomposition of the LiI · 3H 2 O crystal hydrate in vacuum proceeds to monohydrate. During heating of lithium iodide monohydrate, evolution of water vapor is observed at 30–100 and 100–170°C. Above 200°C, evolution of mole…
The multicomponent refractory oxide system Zn2(TiaSnb)1 − x ZrxO4 (a + b = 1; a: b = 1: 5, 1: 4, 1: 3, 1: 2, 1: 1, 1: 0, 2: 1, 3: 1, 4: 1; x = 0−1.0; Δx = 0.05) has been studied by x-ray diffraction, using samples prepared by melting appropriate oxide mixtures in a low-temperature hydrogen-oxygen plasma. Two phases, b…
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Focal conics consisting of an ellipse and a hyperbola in chiral smectic C liquid crystals aligned in surface‐stabilized cells of medium thickness (about 25 µm cell gap) were characterized in relation to the chevron structure by synchrotron X‐ray microdiffraction. The focal conic texture is embedded in the chevron stru…
This paper explores the effect of a liquid lithium curtain on fusion reactor plasma, such curtain is utilized as the first wall for the engineering outline design of the Fusion Experimental Breeder (FEB-E). The relationships between the surface temperature of a liquid lithium curtain and the effective plasma charge, f…
Nanosized tin whiskers and spheres 15 nm in diameter form on anodic aluminum oxide (AAO) templates via a two-step anodization. The driving force, residual stress released from the template at a high temperature, causes tin whiskers of uniform size to grow on AAO within a few minutes. Various thicknesses AAO templates…
We’ve built this digital research platform to provide academics everywhere with fast, stable and secure digital access to our library of over 110,000 scholarly books and 800,000 journal articles. We’ve tested the platform in close cooperation with leading academic institutions. If you have any questions or you notice…
A radiation hardened, high-performance, ferroelectric memory (FeRAM) with 2 Mb density has been designed to yield radiation characteristics useful for many satellite and space applications. The ferroelectric capacitor for each memory cell is inherently resistant to both TID and SEU effects. A design approach employing…
The corrosion inhibition efficiency of two oligomers, derived from glycolysed products of poly(ethylene terephthalate) with diethanol and triethanol amine, was measured from weight loss and electrochemical polarization techniques. The polarization curves indicate that these oligomers act as mixed-type inhibitors. The…
The Y2O3 addition to Mg-5Si alloys has a good modification effect on the primary Mg2Si. With 0.05% or 0.1% (mass fraction) Y2O3 additions, the primary Mg2Si begins to change from coarse dendritic shape (about 100μm) into small polyhedral shape and therefore the alloys exhibits sub-modified microstructure. With 0.2% Y2…
We’ve built this digital research platform to provide academics everywhere with fast, stable and secure digital access to our library of over 110,000 scholarly books and 800,000 journal articles. We’ve tested the platform in close cooperation with leading academic institutions. If you have any questions or you notice…
Composites were made with jute, cordenka and jute+cordenka by extrusion and injection moulding. The matrix material was Polypropylene (PP) and PP maleic acid anhydride grafted copolymer (MAPP) was used as coupling agents. The mechanical tests were performed. The hybrid composite of jute 25% and cordenka 75% showed the…