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。
Abstract Ba 6 Pr 2 Fe 4 O 15 (I), Ba 5 SrPr 2 Fe 4 O 15 (II) und Ba 5 CaPr 2 Fe 4 O 15 (III) wurden mit Hochtemperatur‐CO 2 ‐LASER‐Technik dargestellt. (I)–(III) kristallisieren mit hexagonaler Symmetrie, Raumgruppe C –P6 3 mc, (I): a = 11.808(2), c = 7,036(4) Å; (II): a = 11.689(2), c = 6.954(2) Å; (III): a = 11.602(…
We’ve built this digital research platform to provide academics everywhere with fast, stable and secure digital access to our library of over 110,000 scholarly books and 800,000 journal articles. We’ve tested the platform in close cooperation with leading academic institutions. If you have any questions or you notice…
SummaryA hydrophobic coating formulated with maltodextrins, carboxymethylcellulose, propyleneglycol and a mixture of sorbitan esters was applied to pre-climacteric ‘Manila’ mangoes. The coated fruit were stored for 20 d at 25°C and 80–85% r.h. Changes in mesocarp hardness, as well as pectinesterase (PE), polygalacturo…
Cost is one of the major factors to be considered when choosing a thermal insulator. Design engineers continuously strive to provide the best at the lowest possible cost. In the tropics climatic conditions are essentially hot and humid and a cause for daily discomfort. To some extent, air-conditioning of buildings has…
Abstract Retention gape deactivated with Silicone OV‐1701‐OH show good chromatographic performance and remarkable stability against water induced stationary phase degradrdation. In an attempt to better understand the findamentals off the deactivation process using silanol terminated polysiloxanes, a fumed silica was d…
Austempered ductile cast iron (ADI) has emerged as a major engineering material in recent years. In addition to high strength and relatively light weight (compared to steel), it has high ductility, good wear resistance and good damping capacity. It has many potential applications such as automotive components (e.g. cr…
The motion of domain boundaries in ferroelectrics and related materials is considered. The factors controlling their displacements are indicated: the lattice potential relief, the crystal lattice defects, the long-range electric and elastic fields arising through the bending and the translational displacements of doma…
${\mathrm{RFe}}_{10}$ ${\mathrm{Mo}}_{2}$ (R=Pr, Sm, Nd, Dy, Ho, Er, Tm) intermetallics were investigated by studying the temperature- or field-induced spin-reorientation transitions (SRT's). The temperature dependence of the magnetic anisotropy field was determined by means of the singular point-detection technique f…
Abstract Soil colour was expressed in terms of chromaticity coordinates instead of traditional Munsell notations which facilitated correlation with the moisture content of soils. Spectral reflectance of twenty‐one soil samples was measured in the visible region from saturation to air‐dryness from which the colour coor…
The formation of epitaxial lead-telluride films on a silicon substrate with a porous-silicon sublayer is investigated. In these structures vertical-type infrared photodiodes were produced using ion doping. Despite a great mismatch in the lattice constants and the temperature expansion coefficients between silicon and…
The crystal structures of [Fe(oep)L 2 ][O 3 SCF 3 ] and [Co(oep)L 2 ][ClO 4 ] [H 2 oep = 2,3,7,8,12,13,17,18-octaethylporphyrin, L = [Fe(C 5 H 5 )(C 4 H 4 N)] have been determined. The azaferrocene ligands L in both compounds are seen to be parallel. The axial M–N (azaferrocene) bonds are longer than those found in an…
Cluster models and the atom superposition and electron delocalization molecular orbital theory calculations lead to an explanation for the ability of nitrogen to cause phosphorous incorporation in low pressure grown diamond films as observed recently by Cao and coworkers. The theory shows that substitutional N compens…
Impedance spectra are obtained in H 2 /H 2 O on Ni/YSZ cermet anodes. These impedance spectra are fitted to the equivalent circuit LR(RQ) 1 (RQ) 2 (RC) 3 . The subcircuit (RC) 3 is found to have a capacitance in the order of 0.1-1.1F only when the current-bearing electrodes are in separate atmospheres. This impedance…
In order to clarify the phase transformation of Fe-15 mass%Cr-C-B alloys, we prepared nine kinds of the alloys with different carbon and boron contents. The phase transformation behavior was examined with thermal expansion test, hardness test and SEM observation. The results obtained are as follows.(1) The transformat…
SiC was bonded to SiC using Ta foils at temperatures from 1673 to 1773 K for 3.6∼144 ks in vacuum. The reaction phase and microstructure formed at the an interfaces between SiC and Ta were investigated. At the initial stage, an hexagonal Ta2C phase is formed at the Ta side of the reaction zone, and the hexagonal Ta5Si…
The influence of oxygen and humidity of inlet gas on the sintering reaction was studied through mathematical model analysis. Then, the change of oxygen and humidity of inlet gas was investigated for the effects on the sintering time, product yield of sinter, heat wave in sintering bed and other parameters in all of th…
The photolysis and photo-oxidation mechanisms of poly(butylene terephthalate) (PBT) and poly(butylene terephthalate)-fibre glass (PBT-FG) irradiated under polychromatic light (λ ≥ 2300 nm) were studied. Derivatisation reactions coupled to FTIR analysis of the exposed samples permitted the identification of the various…
目的 繊維束を薄く, 幅広な状態に, 連続して開繊させるための新しい方法を確立し, 開繊機構およびその加工条件と開繊性の関係を明らかにする.成果 1) ある一定の量だけ撓ませた繊維束に垂直に一様な空気流を連続して作用させる方法により, 繊維束を連続して良好に開繊させることができた. 2) 空気流の作用により繊維束の中央部分と両側部分に圧力差が生じ, 各繊維は繊維束の幅方向へ移動する力を得て開繊が行われるものと考えられる. 3) 繊維束の撓む大きさが適当に小さいとき, 各繊維の動きがある程度規制された状態となり, 開繊時の繊維の分が均一となる. 4) 開繊加工を行う場合の加工速度は開繊幅にほとんど影響しない. 5) 無撚炭素繊維束3…
Friction and wear tests of sintered α-SiC were conducted from room temperature to 1200°C both in air and vacuum. The coefficient of friction was larger in air than that in vacuum but was almost independent of the temperature. The specific wear loss generally increased with an increase of temperature. However, a substa…
We describe the applicability of the imaging plate method for determining stress by x-rays of coarse-grained materials. Three kinds of approach were examined. The first one was the standard type which adopted neither the software oscillation method, which is one of the image processing methods used to improve the accu…