Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The corrosion products formed on carbon steel exposed to the Qinghai Salt Lake atmosphere for 12 months was studied using scanning electron microscopy (SEM), electron probe micro-analysis (EPMA), x-ray diffraction (XRD), infrared transmission spectroscopy (IRS), and electrochemical techniques. The rust was mainly comp…
Destructive methods were used for the burnup determination of a PWR nuclear fuel irradiated to a high burnup in power reactors, and of a dry processed fuel fabricated from a spent PWR fuel and irradiated in the Hanaro research reactor. The total burnup was determined from a measurement of the Nd and Cs isotope burnup…
The ZnO films in which the crystallite c -axis is unidirectionally aligned in the substrate plane [(11 0) textured ZnO films] enable the realization of shear mode devices in the ultra high frequency (UHF) range. In this study, we have investigated the (11 0) textured ZnO film, focusing on the effect of total gas press…
In this study, a Rosen-type Pb(Mg(1/3)Nb(2/3))O(3)-PbTiO(3) single crystal piezoelectric transformer is presented. First, we simulate the operation of this transformer using the finite element method and ANSYS. By adjusting the dimensions of the piezoelectric transformer, a maximum voltage step-up ratio of 138 can be…
The optical properties of Tl 4 InGa 3 S 8 layered single crystals have been studied by means of transmission and reflection measurements in the wavelength region between 400 and 1100 nm. The analysis of the room temperature absorption data revealed the presence of both optical indirect and direct transitions with band…
Abstract This work presents the electrochemical kinetics results measured during the corrosion of API X52 pipeline steel immersed in aqueous environments, containing dissolved hydrogen sulfide (H 2 S) under turbulent flow conditions. In order to control the turbulent flow conditions, a rotating cylinder electrode (RCE…
Coexisting solid-solution series of synthetic zoisite-(Sr) and clinozoisite-(Sr) were synthesized in a 1 M (Ca,Sr)Cl 2 solution at 2.0 GPa, 600 °C for 6 days in a piston cylinder press. Solid solutions were synthesized from X Sr Zo = Sr/(Ca + Sr) = 0.06 to 1 and X Sr Czo = 0.08 to 0.5 in zoisite and clinozoisite, resp…
The paper describes problem related to measurements and interpretation of partial discharges in insulation systems in presence of voltage harmonics, with special focus on epoxy resin based insulation. Laboratory testing system with controlled generation of periodic sinusoidal and harmonically modified voltages was use…
Effect of Energetic Particle Bombardment on Microstructure of Zinc Oxide Films Deposited by RF Magnetron Sputtering, Furuta, Mamoru, Hiramatsu, Takahiro, Matsuda, Tokiyoshi, Furuta, Hiroshi, Hirao, Takashi
A simple model is used to explain the characteristics of nano-composite polymer dielectrics under high fields. The important, indeed dominant, role of the particle-polymer interface in determining the proportion of unmodified polymer matrix available to normal conduction is emphasised. By considering the specific cond…
The structure of anodized aluminum oxide films has been investigated by the small-angle neutron scattering method. A theoretical solution is obtained for describing neutron scattering from the Al 2 O 3 ordered porous structure. Analysis of the neutron-experiment data shows the possibility of obtaining porous membranes…
Aligned carbon nanotubes (CNTs) in a specific pattern were synthesized by catalytic thermal chemical vapor deposition (CVD) technique. The carbon nanotubes were then coated with MgO layer of different thicknesses to improve the field emission property. Field emission with high stability and low turn-on voltage of abou…
This paper is devoted to an investigation of the effects of surface structure (structure-less or structured) on the description of the adsorption isotherm and the isosteric heat of nitrogen and argon adsorption onto graphitized thermal carbon black. It was found that the surface structure had little effect on the adso…
Semiconductor transformation of lead zirconate titanate (PZT)‐5H ferroelectric ceramics induced by hydrogen has been investigated. The results showed that hydrogen caused the PZT‐5H ferroelectric ceramics to transform from a yellow insulator into a black n ‐type semiconductor, and the leakage current and carrier conce…
At room temperature, Ba0.5Sr0.5TiO3 films can be distorted into in-plane or out-of-plane tetragonal structure depending on the type of film strain while the bulk ferroelectric is in a paraelectric phase (i.e., cubic). The film distortion can be accompanied with or without strain-induced permanent polarization dependin…
Vitrification of nuclear wastes is attractive because of its flexibility, the large number of elements which can be incorporated in the glass, its high corrosion durability and the reduced volume of the resulting waste form. Vitrification is a mature technology and has been used for high level nuclear waste (HLW) immo…
This review covers main approaches to development of inhibited conversion formulations for chemical oxidation of aluminum alloys. A mechanism explaining the formation of conversion coatings on aluminum alloys from chromate conversion baths is proposed; the protective properties of the resulting coatings are characteri…
The electronic structure of contact between Ti surface and a semiconducting carbon nanotube is investigated by using first-principles method. The nanotube placed on the Ti surface exhibits obvious cross section distortion and strong chemical bonds form between C and Ti. Our results suggest that the nanotube may become…
Abstract Low‐pressure plasmas are known for their ability to synthesize nanoparticles via gas‐phase nucleation. While in the past this particle formation has often been considered from the viewpoint of a contamination problem in semiconductor processing, we here describe a low‐pressure plasma that enables the synthesi…
It is established that magnesium oxide (a nonmagnetic ionic insulator) exhibits a transition to the state of a magnetic half-metal upon the introduction of nonmagnetic impurities (boron, carbon, or nitrogen) into the crystal lattice. The possibility of obtaining novel magnetic materials for spintronics by doping ionic…