Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSensitized polypyrrole-coated semiconducting powders as materials in photosystems for hydrogen generationAttila Yildiz, Andrzej Sobczynski, A. J. Bard, A. Campion, M. A. Fox, T. E. Mallouk, S. E. Webber, and J. M. WhiteCite this: Langmuir 1989, 5, 1, 148–149Publication Date…
The steady-state modeling of a laminated saturating iron core is discussed. The modeling is in the harmonic domain, i.e. in terms of phasors for the different harmonics due to the nonlinear magnetization characteristic. The procedure is based on a polynomial approximation of the magnetization characteristic. In the ha…
The intensity ratio of the second order to the first order Bragg reflection resulting from smectic A layering is reported for two compounds. In one case this ratio is small (∼ 10−3), which is of the same order as commonly reported. The second compound shows an intensity ratio which is two orders of magnitude higher. I…
The effect of chromium content in the range of 10 to 13% on the mechanical properties has been investigated of a heat resisting steel for turbine rotors. It is revealed that increase in chromium content brings about increased amounts of dissolved chromium and the Cr2(C, N) type carbides, both of which enhance room tem…
Article Diffusion Coefficients of Hydrogen and Deuterium in Iron Determined by Permeation with Gas, Ion and Electrochemical Charging* was published on January 1, 1989 in the journal Zeitschrift für Physikalische Chemie (volume 164, issue 1).
Abstract Accurate vibrational frequencies are reported for pyrazole and for seven N ‐ and C ‐deuterated analogues from FT‐IR spectra for the vapour phase at room temperature, diluted CCl 4 solutions and polycrystalline solids and from Raman spectra in aqueous solutions. Several frequencies are reported for fundamental…
The elastic theory of nemtatic liquid crystals is used to determine whether it gives support for recent experimental observations of a novel periodic phase occurring in homeotropically aligned films when an electric field is applied in the plane of the film. The director remains in the plane defined by the film normal…
SmFe10(TiV)2 melt-spun ribbons based on the ThMn12 structure exhibit the high coercive force of nearly 728 kA/m after annealing at 1073 K. This is the highest value among the reported melt-spun ThMn12-type structure ribbons. Microstructural studies indicate that the ribbons consist of fine ThMn12 grains of 50–150 nm i…
Devonian rocks from the Orcadian Basin show an extreme range of organic maturity. Mean vitrinite reflectance ranges from 0-6 to 10.5~ and spore colour from yellow- orange to black. Illite/smectite (I/S) is abundant in the clay fraction of lacustrine mudrocks and shows variation in expandability from 30 to < 5~. A corr…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBehavior of adsorbed polymer layers in shear and elongational flowsM. Bagassi, G. Chauveteau, J. Lecourtier, J. Englert, and M. TirrellCite this: Macromolecules 1989, 22, 1, 262–266Publication Date (Print):January 1, 1989Publication History Published online1 May 2002Publishe…
A new computer code SPECOMP has been developed to calculate displacement damage for compound materials. The code uses primary recoil atom energy distributions from the SPECTER code and thus requires no access to nuclear data bases. For each combination of recoil and matrix atom, the code determines the secondary displ…
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Measurements are reported of the dielectric properties of three laterally substituted dicyano compounds with large molecular dipole moments perpendicular to the long molecular axis. Results are given for the materials in solution, in the isotropic liquid state, and for one compound in the nematic state. There is evide…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolubility and density isotherms for potassium sulfate-water-2-propanolJerzy Mydlarz, Alan G. Jones, and Angel MillanCite this: J. Chem. Eng. Data 1989, 34, 1, 124–126Publication Date (Print):January 1, 1989Publication History Published online1 May 2002Published inissue 1 Ja…
The corrosion of zirconium alloys in aqueous lithiated solutions is sensitive to the concentration of the alkali and the temperature. In concentrated solutions, ⪢10-1 M in lithium hydroxide (LiOH) (700-ppm lithium) and at temperatures &gt;573 K, accelerated corrosion occurs at quite an early stage. Our investigati…
The spectroscopic characterization and electrochemistry of SnL(X)2 is presented where L is the dianion of tetra-p-tolylporphyrin or tetra-m-tolylporphyrin and X is ClO4–, Br–, Cl–, F–, or OH–. In all cases, electroreduction leads to porphyrin π anion radicals and dianions which were characterized in tetrahydrofuran by…
Corrosion inhibitors have been prepared by ethoxylation of four commercially available unsaturated fatty acid mixtures: tall oil, soya bean oil, cotton seed oil, and linseed oil. The compounds obtained have the general formula R–COO–(CH 2 CH 2 O) n –H, where R is mainly a mixture of C 17 H 29 , C 17 H 31 , and C 17 H…
Commercial and experimental steels containing various chromium concentrations have been assessedfor their resistance to the combined effects of abrasion and corrosion. The degree of work hardening and macro- and microtoughness of low carbon martensite alloys, dual phase alloys, and metastable austenitic alloys provide…
It has been shown by i.r. and XPS techniques that protonation of nitrogenated bases (ammonia, pyridine and pyrazine) is the major process that occurs on adsorption of these compounds in the intracrystalline environment of V2O5· 1.5 H2O xerogel. At room temperature the intercalation process takes place mainly by a prot…
The crack growth resistance of a textured, extruded alumina body was compared with that of an isotropic, isopressed body of similar grain size, density, and chemistry. R ‐curve levels reflected the preferred orientation; however, R ‐curve slopes ( dK IR / d Δ a ) were the same in all instances, implying a similar crac…