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。
Crystallization of tetrakis(thiourea)platinum(II) with squarate, croconate and rhodizonate dianions leads to the formation of different hydrogen bonded networks. The solvent used in the crystallization plays a central role in the nature of the hydrogen bonded network obtained, templating different structures from the…
Dense β-Si3N4 ceramics were prepared from the α-Si3N4 raw powder by sintering at 1900°C for 12 h at a nitrogen pressure of 1 MPa, using a mixture of Y2O3 and MgSiN2 as the sintering additives. The effect of embedding conditions on the thermal conductivity of β-Si3N4 ceramics was investigated by changing the number of…
We have developed two novel organic superconductors kappa H- and kappa L-(DMEDO-TSeF)2[Au(CN)4](THF) (DMEDO-TSeF = dimethyl(ethylenedioxy)tetraselenafulvalene) with the onset transition temperatures of 4.8 K for the kappa H-phase and 3.0 K for the kappa L-phase at ambient pressure, where DMEDO-TSeF is the second examp…
In previous study, the analysis of simultaneous reaction between the reduction reaction and the gasification reaction in a facing pair was performed. The definition of the coupling phenomenon was proposed. It was found that the starting temperature of gasification decreased from 900 to 600°C in the facing pair under C…
Reinforcing steel bars are an important material for construction. The strength level of rebar has been increased to as high as, for example, 345, 390 and 490 grade. In order to produce high-strength rebar, V microalloying technology has been successfully applied, while Nb application to reinforcing bars has been trie…
The relationships between mechanical properties and microstructure of Ti-29Nb-13Ta-4.6Zr in under aged, peak aged and over aged conditions at various aging temperatures were investigated. The maximum Vickers hardness values of Ti-29Nb-13Ta-4.6Zr aged at 573 K, 673 K and 723 K are obtained at aging times of around 2419…
Compósitos que utilizam fibras vegetais como reforço têm despertado crescente interesse por parte da comunidade científica e industrial. O bagaço e a palha de cana são materiais renováveis e quando usados como reforço em uma matriz termoplástica podem dar origem a compósitos com baixo custo, baixa densidade e interess…
Geothermal and solar heat are attractive and environmentally clean energy sources for future power systems where solid state generators may become more important. In this paper, a generator model for such a novel conversion system is presented. Benefits and constraints are shown using a thermoelectric generator for so…
In this paper we report the fabrication, properties and degradation studies of banana fibers–reinforced thermoplastic polymers. In order to impart hydrophobicity to the fibers and also to concomitantly increase interfacial bond strength, which is a critical factor for obtaining better mechanical properties of composit…
We previously reported that the electric permeability εr' of ferromagnetic nanocomposite oxide sputtered films with a Bi2O3-Fe2O3-PbTiO3 ternary system is subject to change with an external magnetic field H and that electric polarization induced by a small ac magnetic field, ΔPh(ω), is observed. To explain these exper…
Mutnovskite, ideally Pb 2 AsS 3 (I,Cl,Br), is a new mineral from the high-temperature fumaroles of the Mutnovsky volcano, Kamchatka Peninsula, Russian Federation. It occurs as microscopic rubycolored short-prismatic crystals up to 100 μm across, closely associated with halogen-sulfosalts of Pb, Bi, and As, Cd-Pb-Bi su…
The semiconductive properties of anodic niobium oxides formed at constant potential and constant current density to different final voltages have been examined by Mott-Schottky analysis. Thin anodic oxides were formed on sputtered niobium specimens at constant potential in the range of 2.5 to 10 V Ag/AgCl in a borate…
Abstract Novel organoboron polymers containing transition metals (Ni, Pd, Pt) and pyrazaboles in the main chain were prepared by Cu-catalyzed coupling polymerization. The Ni- and Pt-containing polymers showed MLCT (metal-to-ligand charge transfer) absorption, whereas the Pd-containing polymer did not demonstrate the a…
Light-storing-emitting materials composed of are synthesized via the wet combustion method, and the fluffy resultants obtained are easily pulverized into powder samples. The fluorescent spectra of the sample show the same characteristics as those samples fabricated by the dry method. But the phosphorescent spectrum sh…
An alternative cycle proposed for refrigeration and gas liquefaction is active magnetic regenerator (AMR) refrigeration. This technology relies on solid materials exhibiting the magnetocaloric effect (MCE), a nearly reversible temperature change induced by a magnetic field change. This work focuses on numerical simula…
We have performed the first principles calculations on doped δ-Bi 2 O 3 to investigate ionic conductivity. The crystal structure and the ionic conductivity are discussed in total energy and density of states (DOS) from the calculations. The stabilized δ-phase Bi 2 O 3 doped rare-earth metal was explained from DOS data…
In this study, the effects of braid pattern and take-up rate on the mechanical properties of the tubular braided ropes of polypropylene were investigated. Strand fineness of 70 tex and 150 tex, braid pattern of 1/1 and 2/2, and high & low take-up rates were selected For both strand finenesses, the highest values for m…
Preface Co-operative Anistropic Theory of Ferromagnetic Hysteresis Image Reconstruction and Geometrical Analysis of Three-Dimensional Fracture Surfaces in Materials Optical Properties of Pd-free Au-Pt-based High Noble Alloys Gravitational Effects on the Weld Pool shape and Microstructural Evolution of Ni, 304 Stainles…
Hydrogen absorption behavior and hydrogen embrittlement properties of 1000-1800 MPa grade ultra high-strength low alloy TRIP-aided steels with bainitic ferrite matrix were investigated. The TRIP-aided steels absorbed a large amount of hydrogen, compared with the conventional tempered martensitic and bainitic steels. I…
A new concept of maximum power point tracking control method for Thermoelectric Power Generator (TEG) systems has been developed. The virtual load conductance of the load is feedback controlled to maintain the same value of the internal conductance of the thermoelectric (TE) array using DC-DC converter. The prototype…