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 microscopic structures of the diamond films generated on Si (100) substrates by chemical vapor deposition have been studied by x-ray wide angle diffraction spectroscopy, grazing incidence x-ray scattering spectra, positrons annihilation lifetime spectroscopy, and qualitative software and Positronfit program. The d…
One of the main problem in the industrial application of vacuum carburizing of steel is the unwanted but unavoidable formation of higher hydrocarbons up to tar and graphite. One of the main research objectives at the Engler-Bunte-Institute are investigations in the pyrolysis of gaseous hydrocarbons. The results presen…
Solid oxide fuel cells consisting of LSCF, YSZ and Ni-YSZ were fabricated with anodes of controlled porosity and pore size. The effects of porosity and pore size on cell performance were investigated theoretically and experimentally. A geometric simulation was used to determine the three-phase-boundary length (TPBL) w…
Antiferroelectric superlattice-reflection intensity and pseudo-tetragonal lattice distortion of PbZrO 3 show the same temperature dependence, which can be described by a usual phenomenological theory that includes a quantum effect. R 25 superlattice-reflection intensity shows the different temperature dependence above…
Liquid crystal materials with negative dielectric anisotropy have been successfully applied to light emitting diode. Even for a nematic phase, the Fredericks transition was avoided under such strong electric field that emission could be observed. Three colors (R, G, B) have been obtained by doping corresponding dye ma…
The research results presented here are first part of the oxidation and thermal fatigue research of TBC (Thermal Barrier Coatings),which was mainly concerned with the experiments of oxidation and thermal fatigue for two types of TBC:plasma sprayed and electrical beam physical vapor deposition coatings,and prepared for…
In this paper broad sense grating equation and broad sense chromatic dispersion formula that can be applied to reflection and transmission regions of phase grating in arbitrary oblique angle of incidence are discussed based on the vector diffraction theory. At the same time, the theoretical and numerical analyses for…
A Scanning Laser-Enhanced Electrochemical Microscope for Hydrogen detection (H-SLEEM) has been developed in order to in-situ visualize the distribution of hydrogen localized on a steel surface. Introduction and detection of hydrogen for the steel sheet was conducted by hydrogen permeation technique with a pair of elec…
Lattice parameters of lead titanate were precisely re-determined in the ternperature range of-150-950℃ by high precision XRPD measurements. It was clarified that there was no any evidence for a new phase transition at low temperatures. Tetragonal distortion strain decreases with temperature increasing. A novel thermal…
Owing to the limited solubility of zirconium in molten magnesium, almost all of the zirconium contained in the Zirmax® master alloy (Mg-33.3Zr) is present in the form of nearly pure zirconium particles. Of them, zirconium particle clusters and individual zirconium particles greater than 5 μm in dimension account for a…
The dc electrical behavior of graphytized carbon-blacks filled rubbers was investigated in the temperature range 25°C to 125°C. The volume fraction of the fillers varied from 30% to 60%. The observed conductivity increases with increasing filler contents. At a temperature higher than 25°C for 60% filler concentration…
This work compares the performance of copper catalysts modified with that of acids. Hence, γ-alumina is used to support the catalyst in the selective catalytic reduction of nitric oxide by hydrocarbons (HC-SCR) using methane at temperatures from 623-1023 K in the presence of oxygen. The copper catalysts were prepared…
L. Introduction Recently it becomes possible to fabricate silica glass coatings onto various kinds of materials by heating coated polysilazane films ; (-SiHz-NH-) [-3]. This technique attracts much interests in wide area of industry for making protective hard coatings, electrical insulating layers, thermal or chemical…
The structure of the Eu 2+ and Sr 2+ DOTA 4- (1,4,7,10-tetraazacyclododecane-1,4,7,10-tertraacetate), DTPA 5- (diethylenetriamine- N, N, N ‘, N ‘ ‘, N ‘ ‘-pentaacetate), and ODDA 2- (1,4,10,13-tetraoxa-7,16-diazacyclooctadecane-7,16-diacetate) complexes were characterized using XAFS in the solid state and in aqueous s…
A nuclear desalination system has been developed through a thermal coupling of the MED–TVC process and SMART – an integral type of advanced reactor producing rated thermal power of 330 MW. The integrated SMART desalination plant is consists of four units of the MED–TVC process to produce 40,000 m³/day of potable water…
The relative alteration in micelle size and micelle shape brought about by two sets of specific solutes have been investigated by mass density measurements at constant composition and temperature. The mass density of the first set of solutes, phenol, benzene, cyclohexanol and cyclohexane, was measured in the same host…
In order to understand the role of TiO2 in the deactivation mechanism of an active RuO2?TiO2 coating, an additional TiO2 layer was introduced in the support coating interphase of regular Ti//[RuO2?TiO2 anode in one case and on the surface of the coating in the other. The electrochemical behavior of these, with TiO2 en…
A novel triple decker uranium complex has been prepared by refluxing tetraphenylporphyrin and uranyl acetate in phenol or benzonitrile, and its chemical transformations have been studied.
The isotropic to nematic(IN), nematic to cholesteric(NCh), cholesteric to smectic-A (ChA) and smectic-A to smectic-C* (AC*) phase transition temperatures exhibited by a room temperature ferroelectric liquid crystal RTFLC, viz., 2Cl.BAAP.180-BBP are determined by the observed anomaly in differential permittivity, d l '…
Oxidation kinetics of hexagonal boron nitride powder in 8% O2-20% H2O/balance argon was investigated at 900-1100°C. Paralinear weight change curves were observed. The rate constant of BN oxidation in 8% O2-20% H2O/balance argon was almost the same as that in 20% H2O/balance argon at the temperature below 1000°C, while…