Materials Literature
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Abstract An analysis was made to investigate the influence of the alloying of sprayed coatings on the corrosion performance in climates of practical relevance and to evaluate the optimised alloy compositions. Furthermore, the mechanism of corrosion and coating formation was evaluated. The protective effect increased u…
We have investigated the issue of water activation during turbulent movement of a liquid, this movement being characterized by disturbance of flow continuity (a cavitation mode). We have also studied the relationship between the stability of the metastable state of a liquid and introduced energy. Based on experimental…
CdS and CdSe nanoparticles were prepared in organic solvents using as templates inverse amphiphilic block copolymer micellar aggregates, which were induced by cadmium complexation. Amphiphilic block copolymers utilized in this work include poly(sulfonated styrene- block - tert -butylstyrene) (SPS−PtBS) and poly(styren…
The deformation behavior of Zircaloy-4 cladding was investigated under cyclic pressurization. A cyclic pressurization test for a cladding tube was carried out and a stress-life diagram of the cladding tube was constructed. The result showed that the O'Donnell and Langer relationship can be fitted to the fatigue behavi…
Abstract In this work we report on the structure and magnetic and electrical transport properties of CrO 2 films deposited onto (0001) sapphire by atmospheric pressure (AP)CVD from a CrO 3 precursor. Films are grown within a broad range of deposition temperatures, from 320 to 410 °C, and oxygen carrier gas flow rates…
The effects of the average grain size on the phase transformation and consequent changes in the dielectric properties of Pb(Mg1/3Nb2/3)O3-30 mol % PbTiO3 were investigated. It was observed that the size refinement down to ∼90 nm impeded the phase transformation of the cubic phase formed in the course of sintering eith…
Abstract The (E) isomer in mixtures of (E) and (Z) 1,3‐hexadiene was polymerized with the system CoCl 2 (P i PrPh 2 ) 2 ‐MAO, a highly active and stereospecific catalyst for the preparation of 1,2 syndiotactic polybutadiene. A new crystalline polymer with a melting point of 109 °C was obtained. The polymer was charact…
The performance of thermoelectric (TE) coolers is determined by the figure of merit of the TE materials ZT. In order to obtain the optimal performance of a superlattice microcooler, both the superlattice structure and the device were optimized in the design and the fabrication process. The thermal conductivities of In…
Abstract The literature contains considerable disagreements on the relative stabilities of the members of the copper hydroxyl sulphate family. Titration of copper sulphate with sodium hydroxide is claimed by some to produce only brochantite, while other reports indicate that antlerite and a dihydrate of antlerite are…
The subject of this paper is to construct a current- transformer (CT) model based on the Jiles-Atherton (J-A) theory of ferromagnetic hysteresis using transient analysis of control systems (TACS) functions within the electromagnetic transients program (EMTP) in a closed-loop manner. The J-A theory of ferromagnetic hys…
Diffusion and reaction of aluminum metal species (Al) vacuum deposited on perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) thin films were investigated using angle resolved x-ray photoemission spectroscopy. The acquired data were analyzed assuming that the diffusion of Al is described by a one-dimensional diffusi…
We have systematically investigated the influence of the Ag doping on magnetization M(T), resistivity ρ(T), thermoelectric power S(T), and thermal conductivity κ(T) in the layered cobaltites Bi2Ba3−xAgxCo2Oy (0⩽x⩽2) samples. For Ag-doped sample, the magnetic susceptibility indicates the ground state is dominated by th…
The directed self-assembly of a lamellar-forming hybrid block copolymer system comprising of a poly(styrene-b-ethylene oxide) and organosilicates (OSs) has been investigated. The addition of OS to the block copolymer is found to provide additional control over the persistence length of lamellae as well as the behavior…
Preparation and Characterization of Bi-Layer-Structured Multiferroic Bi5Ti3FeO15 Thin Films Prepared by Pulsed Laser Deposition, Nakashima, Seiji, Nakamura, Yoshitaka, Yun, Kwi-Young, Okuyama, Masanori
In this work, we report on the thermoluminescence (TL) and the optically stimulated luminescence (OSL) of ZnO nanophosphors obtained by thermal annealing of ZnS powders synthesized by precipitation in a chemical bath deposition reaction. To obtain nanocrystalline ZnO, ZnS pellet-shaped samples were subjected to a sint…
The cross-plane thermoelectric performance of strained Si∕Ge∕Si superlattices is studied from a quantum point of view using the nonequilibrium Green’s function method. Strain causes the germanium well layers to turn into barriers that promote electron tunneling through the barriers. Electron tunneling produces oscilla…
Micro-Raman spectroscopy was employed to investigate the residual strain and oxygen vacancies of BaTiO 3 -based multilayer ceramic capacitors (MLCCs) with a Ni internal electrode. Strain was found to accumulate around the internal Ni electrodes layers than at other parts of the MLCCs. In addition, the number of oxygen…
Abstract Thiosilicates of the Rare‐Earth Elements: IV. The quasi ‐isostructural Compounds NaSm 3 S 3 [SiS 4 ], CuCe 3 S 3 [SiS 4 ], Ag 0,63 Ce 3 S 2,63 Cl 0,37 [SiS 4 ] and Sm 3 S 2 Cl[SiS 4 ] – Synthesis, Crystal Structure and Investigations of the Silver‐Cation Motion The four lanthanoid(III) thiosilicates NaSm 3 S…
A new, physical, aging and life model for damage inception and growth in polymeric insulation starting at the level of microscopic cavities has been presented in Part 1, by illustrating extensively its theoretical background and derivation. In the present paper a parametric analysis, relevant to a polyethylene-based c…
High-quality mats of single- and double-walled carbon nanotubes (SWNT, DWNT) have been grown by the catalytic chemical vapor deposition (CVD) technique. Field-emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), and Raman spectroscopy revealed densely packed mats mad…