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。
Applications requiring the containment and transport of hydrogen gas at pressures greater than 70 MPa are anticipated in the evolving hydrogen economy infrastructure. Since hydrogen is known to alter the mechanical properties of materials, data are needed to guide the selection of materials for structural components.…
SF6 gas has excellent dielectric strength and interruption performance. For these reasons, it has been widely used for gas insulated switchgear (GIS). However, use of SF6 gas has become regulated under agreements set at the 1997 COP3. Presently, development of a gas circuit breaker (GCB) using CO2 gas and development…
This paper describes the features and benefits of ultra high frequency (UHF) partial discharge monitoring (PDM) systems for gas-insulated switchgear (GIS). The main features of two high-performance PDM systems are described in detail including explanations of the data displays, and the interpretation of partial discha…
Over the past few years, the air cooling technology improvements present diminishing returns for microprocessors cooling applications. Presently most of the proposed future cooling technologies (i.e. pumped liquid cooling or vapor compressor refrigeration) may need some fluid moving device and a large remote heat exch…
Diaminobutane poly(propyleneimine) dendrimers of second to fifth generations were functionalized by the introduction of pyridyl moieties at their primary amino groups through their interaction with 3‐pyridyl isothiocyanate. These pyridylated diaminobutane poly (propyleneimine) dendrimers were subsequently mixed with 3…
A new positive-working polyimide having photosensitive o-nitrobenzyl ester group as side substituent, poly{1,4-phenyleneoxy-1,4-phenylene-3,6-di[4-(o-nitrobenzyloxy)carbonylphenyl]pyromellitimide} (ODA-PI-Nb), was prepared and its aqueous alkali-developability and photosensitivity were investigated. ODA-PI-Nb was synt…
Two widely different rubbers, viz. EPDM and s-SBR have been selected in the present study. The influence of the basicity, the crystal structure and the ability to form complexes of various metal oxides were studied. It was observed that neither CdO, PbO, BaO, CaO, MgO and BeO are proper substitutes for ZnO as activato…
The addition of particulate fillers (woodflour) and short fibers (sisal) into an unsaturated polyester matrix was performed and analyzed. The efficiency of the filler treatment was carefully investigated, in particular, esterification with two different anhydrides, maleic anhydride (MAN) and an alkenyl succinic anhydr…
Novel chloro-subphthalocyaninatoboron()(Subpc) derivatives with six thioether at the 2 and 3 positions of peripheral benzene (Subpc(SR)) such as chloro-[2,3,9,10,16,17-hexakis-ethylthio-subphthalocyaninato]boron()(Subpc(SEt)) and chloro-[2,3,9,10,16,17-hexakis-benzylthio-subphthalocyaninato]boron()(Subpc(SBz)) were sy…
Eu3+ doped Lu2SiO5 (LSO) has been prepared by sol-gel chemistry. X-Ray diffraction showed that only the monoclinic phase corresponding to LSO is observed, even for doped samples. X-Ray absorption measurements were performed at both Lu and Eu LIII edges to investigate the substitution of Eu3+ for Lu3+ in LSO. Lutetium…
The equation T x sigmaDC(T) = alpha x exp[--(E*/kappa(B)T)--gamma x exp(E*/kappa(B)T)] has been used to understand the non-Arrhenius behaviour of the DC conductivity in supercooled glass-forming melts. Here, alpha, gamma and E* are parameters, E* denoting the activation energy for an elementary displacive step. Unlike…
Ferrocene-bridged bisporphyrins have been synthesized by the condensation of corresponding dipyrromethane-derived diols with a bisdipyrromethane. Purification of the final compounds has been achieved without chromatography. The specific geometry of these bisporphyrins makes them valuable starting points for building c…
We demonstrate a novel method for fabricating glass microlens (arrays) with single step on conventional lens surface. In this method, the glass microlens can be achieved by only one step with sol gel glass material. The microlens aperture and focus length can be controlled easily and uniformly. The fabricated sample s…
Equilibrium molecular dynamics have been used to simulate systems of trifunctional dendrimers in an explicit Lennard-Jones solvent. Solution and solvent viscosities, calculated using the Green–Kubo relation, have been used for the first time to determine the intrinsic viscosity of dendrimers of generations three to se…
Thickness measurements of diamond-like carbon (DLC) films by electron energy-loss spectroscopy (EELS) and electron holography are discussed. In order to evaluate the thickness by EELS and electron holography, the mean free path for inelastic scattering and mean inner potential of DLC films were determined precisely, r…
Crystal faces of aragonite in various orientations were dissolved in water or in a dilute aqueous acetic acid. Facet formation processes were observed in situ using atomic force microscopy (AFM). At the polar (001) surface, which gave atom-resolved AFM images in air, less polar {112} facets were developed in water. At…
This study investigates the characteristics of IMI (ITO–Metal–ITO) transparent conductive thin films, with an Ag–Ti alloy intermediate layer. Multi-layers were deposited by sputtering. ITO–AgTi–ITO films have better transmittance than ITO–Ag–ITO films in the visible wavelength range. The maximum transparency is 94% af…
The crystalline state of terbium-containing yttria is one of the important candidates for uses to ultraviolet- and electron-excited green phosphors. To increase the intensity of green emission, structural design of the polycrystalline Y2O3:Tb was carried out using a chemical-vapor-deposition technique operated under a…
The iron(II) and manganese(II) complexes of the N(7) Schiff-base condensate of tris(3-aminopropyl)amine with 1-methyl-2-imidazolecarbaldehyde and the manganese(II) complex of the N(7) Schiff-base condensate of tris(3-aminopropyl)amine with 4-imidazolecarbaldehyde are high-spin mono capped octahedral seven-coordinate c…
Certain aluminum alloys exhibit electrochemical activation in chloride media as a result of annealing at temperatures above , attributed to the enrichment of trace element Pb at the oxide-metal interface. Activation is manifested by a significant negative shift in the corrosion potential and a significant increase in…