Materials Literature
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We report electronic structure calculations within density functional theory for the hydrated superconductor and compare the results with the parent compound . We find that the intercalation of water into the parent compound has little effect on the Fermi surface outside of the predictable effects of expansion, in par…
The present study elucidates the local structure and formation mechanism of a hybrid system based on poly(isoprene- block -ethylene oxide) diblock copolymers (PI- b -PEO) as structure directing agents for organically modified ceramic (ormocer) precursors, (3-glycidyloxypropyl)trimethoxysilane (GLYMO), and aluminum sec…
Abstract ATI 425 was originally developed for hot-rolled armor plate to provide ballistic protection comparable to Ti-6Al-4V and has been evaluated against a variety of projectile threats for use as armor. While processing the alloy for armor plate applications, it was observed that the material exhibited very good ho…
Nano‐crystalline PbSnO 3 was synthesized by a sol–gel route. It was an anion‐deficient pyrochlore ( a = b = c = 1.0677 nm) with space group Fd3m. TEM images confirmed the nano‐size of particles as ∼10 nm, aggregated into larger clusters up to 1 μm. DSC‐TGA investigation revealed that the PbSnO 3 was unstable >800°C…
Nanocrystalline powders of Lu2O3:Eu with activator content varying between 0.2%-10% were prepared using four different methods of synthesis. The products differed in their microstructure and crystallites sizes. Combustion of Lu(NO3)3 with urea produced strongly agglomerated material, most probably with significantly n…
Mechanism of the cationic ring opening polymerization of cyclosiloxanes is still not fully understood. For example, the role of tertiary silyloxonium ions as the intermediates in this process is still controversial. Formation of trisilyloxonium ions generated from hexamethylcyclotrisiloxane, D3, and octamethylcyclotet…
This work is to study the element distribution and microstructure of Sm-Co 2:17 permanent magnets with Ni, Pr, and Ti substitution using TEM/STEM and nanoprobe EDS techniques. Pr substituting for Sm does not affect the microstructure but can prompt the diffusion of Cu into cell walls. Ti is almost uniformly distribute…
Abstract A great number of stable and metastable structures associated with the Al—Ni—Co decagonal phase were observed in a continuous range from binary Al—Co to binary Al—Ni. Two independent basic binary compounds forming the continuous row of the decagonal solid solutions are argued for Al—Ni—Co. The formation of di…
The corrosion resistance of polymer bonded nanocrystalline NdFeB magnets with Nd-rich, stoichiometric, and Fe-rich compositions and that of their main constituent single phases is assessed in aqueous environments. For the evaluation of corrosion properties, gravimetric tests as well as potentiodynamic polarization mea…
Abstract Depolymerization reactions of poly(butylene terephthalate) (PBT) waste in aqueous sodium hydroxide solution were carried out in a batch reactor at 80–140 °C at atmospheric pressure by varying PBT particle size in the range of 50–512.5 μm. Reaction time was also varied from 10–110 min to understand the influen…
We report a study of an electromagnetic pump, applicable to processing high-temperature molten metal such as molten steel at over 1500/spl deg/C. A rotating twisted magnetic field is generated by a stator with three pairs of helical windings. Axial thrust, as well as rotational torque, acts on the molten metal in cyli…
We present, here, the results of a study of photoluminescence spectra of Cr3+-doped MgAl2O4 natural spinel in a given wavenumber range between 26,300 and 12,500 cm-1. By using several excitation sources, we observed a new broadband, namely K, with a peak at 15,547 cm-1 and the transition process of luminescence lines…
Infrared spectroscopy has been used to study a series of synthetic agardite minerals. Four OH stretching bands are observed at around 3568, 3482, 3362, and 3296 cm(-1). The first band is assigned to zeolitic, non-hydrogen-bonded water. The band at 3296 cm(-1) is assigned to strongly hydrogen-bonded water with an H bon…
Fully dense nanocomposites of (Sm/sub 1-x/Gd/sub x/)/sub 2/(Co/sub 1-y/Fe/sub y/)/sub 2:17/ phase + Co/Fe were obtained by hot pressing the amorphous powders at 740/spl deg/-760/spl deg/C. Amorphous powders were made by mechanical alloying. Up to 14 kOe of Coercivity was obtained for these Cu and Zr free nanocomposite…
A Ab bs st tr ra ac ct t. . Of a great concern, the huge amount of waste rubber materials can cause environmental problems. Various methods have been proposed to solve this proplem. One of those is the biodegradation of it by microorganisms. Bacteria able to degrade and use natural rubber latex as the sole source of c…
Abstract The ferritic-austenitic duplex-steels have a very complex precipitation and transformation behaviour, which requires professional treatment. Especially the precipitation of the σ-phase causes considerable changes with regard to the mechanical as well as the corrosive properties, which are to be considered dur…
Co-Zr-B alloy ingots consisted of Co/sub 23/Zr/sub 6/ phase together with the small amounts of Co/sub 5/Zr and Co/sub 3/ZrB/sub 2/ phases. On the other hand, Co-Zr-B melt-spun ribbons consisted mostly of Co/sub 5/Zr phase and exhibited a high coercivity. Heat treatment of the Co-Zr-B melt-spun ribbons resulted in incr…
The electrooptics of a newly proposed transflective liquid crystal display (LCD) with hybrid-aligned liquid crystal texture is optimized by simulation. The transflective LCD possesses an ultralow threshold voltage of 0 V and an operating voltage of 3 V. By using the dual cell-gap technology and a symmetric optical str…
Investigations on amorphous FeCoSiB/SiO/sub 2//FeCoSiB thin-film samples with crossed anisotropies are presented in this paper. The samples consist of two magnetic layers, 40 nm thick each, where the second magnetic layer's uniaxial anisotropy is rotated by an angle of 90/spl deg/ with respect to the anisotropy of the…
Abstract Summary: We have constructed bioconjugates consisting of genetically modified cohesin/dockerin protein polymers combined with (CdSe)ZnS colloidal quantum dots. This recombinant protein contains fusions of Clostridium thermocellum cellulosomal cohesin and dockerin domains and a C‐terminal 6×‐histidine tag. The…