Materials Literature
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By depositing PVD coatings on already conventionally galvanized steel sheets novel zinc alloy coatings have been developed. One of the biggest advantages of PVD coatings lies in the broad choice of coating materials as there are no constraints due to chemical reactions between the substrate and the coating. This leads…
Abstract The synthesis, crystal structure, and magnetic properties of quaternary oxides Ba3Ln2MO9 (Ln = Y, Sm–Gd, Dy–Lu for M = Mo; Ln = Y, Sm–Lu for M = W) are reported. Their powder X-ray diffraction measurements and Rietveld analysis showed that they have a “disordered” perovskite structure, i.e., BaLn2/3M1/3O3 exc…
The coercivity of cellular Sm-Co based permanent magnets is investigated by model calculations. The grain boundaries responsible for the pinning coercivity are modeled as planar inhomogeneities with arbitrary cross-sectional geometry. The calculation yields a physically transparent integral equation for the pinning en…
Multi-layer hydrogen storage thin films with Mg and MmNi3.5(CoAlMn)1.5 (here Mm denotes La-rich mischmetal) as alternative layers were prepared by direct current magnetron sputtering. Transmission electron microscopy investigation shows that the microstructure of the MmNi3.5(CoAlMn)1.5 and Mg layers are significantly…
Abstract Models based on kinetic, thermodynamic and rheological equations have been developed to compute dispersion extent, batch temperature and relative batch viscosity at discrete intervals during a mix cycle in an internal mixer. The calculated relative bulk viscosity can be linked empirically to a measured variab…
Abstract This review covers the various polymeric materials now used to produce outsoles and midsoles for footwear. Thermoset rubbers are considered to be the best material in terms of performance, but many new materials are challenging in the marketplace, due to their ease of production and lighter weight. While the…
The migration of boundaries between single crystal and polycrystalline ZnO was investigated using single crystals with well‐defined crystallographic faces. The migration rate of the basal (0001) planes through polycrystalline ZnO depended on the crystallographic polarity of the basal plane. Grain boundary migration in…
This review focuses on the reactions of ethanol on the surfaces of platinum, palladium, rhodium and gold supported on ceria (of size 10-20 nm). The bimetallic compounds: Pt-Rh, Rh-Au, Rh-Pd, and Pt-Pd were also investigated. Initially this work was aimed at understanding the roles of the different components of automo…
Yttria−alumina (YA) glasses containing 59.8−75.6 mol % Al 2 O 3 were synthesized in the form of 1−3.5 mm diameter spheroids using containerless techniques. The glasses formed at cooling rates ranging from <70 K/s at compositions near 72 mol % Al 2 O 3 and up to 300 K/s at the ends of the composition range. Samples wit…
Effects of Ag addition on sintering of a crystallizable CaO‐B 2 O 3 ‐SiO 2 glass have been investigated at 700°–900°C in different atmospheres. With Ag content increasing in the range of 1–10 vol%, the softening point, the densification, the onset crystallization temperature, and the total amount of crystalline phase…
Improved structures of MgO carbon bonded materials due to new binder systems and due to the application of electrical currents during operation have been achieved for advanced applications in the secondary metallurgy and during near net shape metal casting.
Amorphous melt-spun ribbons of an Nd/sub 4/Fe/sub 77.5/B/sub 18.5/ alloy were consolidated into bulk materials by a spark plasma sintering method. The resultant bulk materials were amorphous when the ribbons were consolidated at 773 K. The amorphous bulk materials showed a low coercivity as expected for amorphous Nd-F…
The in-situ conformations of peptide layers formed from the adsorption of two different synthetic 15-mer peptides at the hydrophilic silicon oxide/aqueous solution interface have been determined using neutron reflectivity (NR). The first peptide is based on the native sequence of a protein-binding domain within a hete…
There has been a long interest and history in using porphyrins for applications in Photodynamic Therapy (PDT) for cancer treatment. These applications arise from their photosensitizing and phototoxic properties. PDT combines a photosensitizer and light to produce highly toxic singlet oxygen and therefore destroy any u…
The major barrier to accelerating the transition from 2D fabric lamination to integral 3D textile preforms is the high costs. Toward this end, substantial researches have been conducted. This paper reports on a conventional approach to the forming of 3D flat woven preforms in a shuttle-weaving machine. The factors in…
The gas (air and hydrogen) flow through porous silicon ($\mathrm{PS}$) nanostructures is studied. Being well described by Darcy's law, the gas flow measurements allow us to deduce PS permeability values, which are measured to be ${10}^{--16}--{10}^{\ensuremath{-}15}\phantom{\rule{0.3em}{0ex}}{\mathrm{m}}^{2}$, corresp…
Three-dimensional fibre-reinforced polymer composites made by the textile processes of weaving, braiding, stitching and knitting have tremendous potential for improving the performance of composite structures and reducing their cost of manufacture. Current applications of three-dimensional composites are described, in…
The FoldMiner web server (http://foldminer.stanford.edu/) provides remote access to methods for protein structure alignment and unsupervised motif discovery. FoldMiner is unique among such algorithms in that it improves both the motif definition and the sensitivity of a structural similarity search by combining the se…
Two branch-line couplers are introduced that utilize a combination of regular microstrip (MS) and negative-refractive-index (NRI) lines. Interesting phase compensation (0/spl deg/ phase shift) at the output port and a choice of /spl plusmn/90/spl deg/ phase shift at the through port, with respect to the input, are pos…
The rheological properties of wood fiber reinforced thermoplastics blends are important to practical industry application, however few research is available regarding this field. In this study, a C. W. Brabender Plasti-Corder torque rheometer was used to examine the flow behavior of wood flour filled polypropylene (PP…