Materials Literature
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Poly(propylene) was RF sputtered in a working gas mixture of argon and nitrogen using planar magnetron. With nitrogen content in the mixture increasing from 0 to 100%, the deposition rate of plasma polymer films increased from 3 to 12 nm · min−1, the contact angle of water on sputtered plasma polymer films decreased f…
Chemical Synthesis and Characterization of Flaky h-BCN at High Pressure and High Temperature, Yang Da-Peng, Li Ying-Ai, Yang Xu-Xin, Du Yong-Hui, Ji Xiao-Rui, Gong Xi-Liang, Su Zuo-Peng, Zhang Tie-Chen
The total stability constants of Th4+, U4+, Np4+, Pu4+, Am4+, Cm4+, Ce4+, Tb4+, Pr4+, Tb3+, and Pr3+ complexes with P2W17O 61 10− heteropolyanion in 1 M sodium salt solutions at pH ≥ 5.5 (i.e., when the anion is not protonated; so-called “absolute” constants), were determined experimentally or calculated from publishe…
A new phenomenon in highly oriented semicrystalline polymers has been found—the occurrence of amplitude‐modulated oscillations (or beatings). The beatings appeared for certain external conditions. A preliminary interpretation of the phenomenon is given at the supermolecular level.
This note describes the scour induced by tidal currents around piles under live-bed conditions, on the basis of physical model tests carried out at Aalborg University (DK). Fine sand was placed in a flume equipped with a reversible pump. Scour was leveled by an automatic laser profiler. Experimental time evolution of…
This paper generalizes a 2-D isotropic vector hysteresis model represented by the superposition of scalar stop models. Its identification method and property of rotational hysteresis loss are discussed. The generalized vector model can control its rotational hysteresis loss
(2007). An evaluation of the behaviour of a zinc layer on a galvanised sheet, joined by MIG brazing. Welding International: Vol. 21, No. 4, pp. 271-278.
In this study, we report on the synthesis of nanopowders of ferroelectric Bi 3.5 Nd 0.5 Ti 3 O 12 ceramic at temperatures below 500°C via a simple chemical method using citric acid as a solvent. The calcined powders were characterized using X‐ray diffraction (XRD), differential scanning calorimetry (DSC), and transmis…
Transmission electron microscopy has been used to study the microstructure of ordering Cu 3 Pd alloys. The effect of atomic ordering of the alloys on their electrical, magnetic, and optical properties has been studied.
Neutronics experiments have been performed for the solid breeder blanket using a DT neutron source at the FNS facility in JAEA. We have applied the blanket mockup composed of two enriched Li2TiO3 and three beryllium layers, and measured the detailed spatial distribution of the tritium production rate (TPR) using enric…
The influence of the replacement of Mn ions in the La0.7Ca0.3Mn1 − y Fe y O3 compounds (0 ≤ y ≤ 0.09) by another transitional metal, Fe, was studied. The radii of both ions are almost identical, which makes the effect of the transitional metal on the physical properties of manganites more transparent. The crystal stru…
Aluminium and its alloys play an important role as anodic materials in sacrificial protection. Many well-known zinc sacrificial anodes are prone to passivation, which reduces their protective activity. For that reason it was necessary to find an anodic material in which the passive state of the protector has been disr…
The complex tris(thenoyltrifluoracetonate)(2,2'-bipyridine)europium(III), Eu(tta)3bipy, was synthesized and assessed for luminescence behavior. The emission of its blends with poly(9-vinyl carbazole) (PVK-Eu), varying in composition from 1 to 8% (Eu(tta)3bipy/PVK, m/m) showed PL at 425 nm and at 613 nm, with intensiti…
In this paper a magnetic vector hysteresis model based on Play hysterons is presented. This model allows the evaluation of the magnetic induction vector from an imposed magnetic field vector. The proposed methodology is simple to implement and needs only a small set of experimental data. Some aspects of the model are…
Cu-catalyzed ZnO nanowires have been synthesized by thermal evaporation of Cu- Zn powder alloys in a water vapor atmosphere. The diameters of the nanowires can be controlled by the amount of water vapor introduced into in the reaction tube. Raman spectroscopic characterization reveals two additional modes at 621 and 6…
The phases and the magnetocaloric effect in the alloys R(Co1-xSnx)2 with x = 0, 0.025, 0.050, 0.075, and 0.100 were investigated by X-ray diffraction analysis and magnetization measurement. The substitution of Sn in RCo2 is limite. The cubic MgCu2-type structure for the alloys of RCo3 was confirmed by X-ray powder dif…
Nanocomposites of polyaniline (PAni) with CdS were prepared from the reaction of dimethyl cadmium (DMCd) and hydrogen sulphide with camphor sulphonic acid (CSA) and phosphoric acid (PA) acid doped polyanilines. PAni.CSA.CdS (PAni‐I) and PAni.PA.CdS (PAni‐II), the so‐named nanocomposites in their UV‐Visible absorption…
The feasibility was investigated to substitute chrome-free passivation treatment of electrodeposited zinc in a titanium bath for chromate passivation treatment. The formation mechanism of the chrome-free passivation film was further analyzed. The surface morphologies and the elemental compositions of the treated sampl…
Polycrystalline tetragonal zirconia fiber was obtained by pyrolysis of precursor fibers from citrate‐acetate‐zirconium complex solution. The viscous zirconia sol with good spinnability was prepared by aging the starting solution of ZrOCl2 · 8H2O (ZOC) in the presence of acetic acid (HA) and citric acid (CA). The effec…
A dynamic model for the Monte Carlo method is developed to analyze the atom recombination on a catalytic surface. A numerical method for the study of this model is considered. The concentrations of physically and chemically adsorbed atoms obtained using this approach are in good agreement with experimental data and wi…