Materials Literature
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The distribution of {110}〈001〉 oriented grains in the primary recrystallized 3% Si–Fe alloy processed by the one-stage cold rolling method were investigated by SEM-ECC-ECP technique and the X-ray diffraction method. The main findings were in the following:(1) {110}〈001〉 oriented grains present below 30 μm from the sur…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotodynamics of nickel-porphyrins in noncoordinating solvents: characterization of d-d excited states using transient Raman spectroscopyE. W. Findsen, J. A. Shelnutt, and M. R. OndriasCite this: J. Phys. Chem. 1988, 92, 2, 307–314Publication Date (Print):January 1, 1988Publ…
In this paper, we investigated the newly found order-disorder ferroelectrics PbHPO4 along with its deuterated analogue PbDPO4. Because the major contribution of the spontaneous polarization is the dipoles forming by the proton (or deuteron) ordering, not the displacements of heavy atoms as in the case of KDP-type crys…
Abstract Strain‐induced crystallization of poly(ether ether ketone) (PEEK) was studied by the use of a parallel plate rheometer. The experimental variables included preheating time, crystallization temperature, and shear rate. The crystallization kinetics were characterized by means of an induction time defined as the…
To understand electron-caused discharges along insulating solid surfaces on spacecraft as well as in solids, Kerr electro-optic field mapping measurements have been performed in electron-beam-irradiated polymethylmethacrylate. The accumulated trapped charge results in large self-electric fields of the order of 1 to 3.…
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
The interface-reaction controlled diffusion creep in fine-grained Al2O3 polycrystals was affected by the dispersion state of ZrO2 particles. The ZrO2 particles at grain boundaries reduced the creep rate and increased the activation energy for creep. The stress exponents were two for both pure Al2O3 and ZrO2-containing…
Synthese des etudes cristallographiques realisees sur les composes d'addition 1:1 de l'hexafluorobenzene avec des hydrocarbures et des amines aromatiques. Dans tous les composes etudies, les molecules associees sont empilees alternativement en des colonnes infinies. Beaucoup de ces composes ont des structures cristall…
An attempt at reviewing the present knowledge of dislocation intrinsic mobility in single phase chemically stable crystals is made. Metals as well as non-metals are considered. It is shown that plasticity of materials is in general dominated by dislocation core effects.
The X-ray crystal structure of (InOPri)5(µ2-OPri)4(µ3-OPri)4(µ5-O) reveals a square-pyramidal arrangement of indium atoms about a central oxygen; five of the alkoxo groups are terminal, four are µ2 about the basal metals, and four are µ3 about the triangular faces of the pyramid; the geometry about each metal is highl…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMultilayer activity and implications of hydrogen peroxide in the catalytic reduction of dioxygen by a dicobalt cofacial bis(porphyrin) (Co2FTF4)James P. Collman, Neil H. Hendricks, Charles R. Leidner, Emmanuel Ngameni, and Maurice L'HerCite this: Inorg. Chem. 1988, 27, 2, 38…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRoom temperature photoassisted formation of hydrogen-molybdenum bronzes with an alcohol as a hydrogen sourcePierre Pichat, Hoang Van Can, and Can Hoang VanCite this: J. Phys. Chem. 1988, 92, 2, 467–470Publication Date (Print):January 1, 1988Publication History Published onli…
The square planar S4 donor complex [Pd(L1)]2+(L1= 7,16-dimethyl-1,4,10,13-tetrathia-7,16-diazacyclo-octadecane) shows a reversible PdII/I redox couple at E½–0.74 V vs. Fc/Fc+; in contrast, the complex [Pd(L2)]2+(L2= 1,4,10,13-tetrathia-7,16-diazacyclo-octadecane) shows distorted octahedral N2S2+ S2 co-ordination, and…
The constrained blister test (CBT) was designed to measure the energy of interfacial adhesion ( y) of polymeric films and coatings. Theoretical analysis of the CBT established a relationship between blister growth and interfacial parameters of the form A(t) A(t0)=exp[βp2h ph-γ (t- t0)] where A(t) is the blister area a…
L'etude des relations composition structure est menee par spectrometrie RMN avec rotation de l'echantillon selon l'angle magique. L'etude porte sur les trois systemes suivants: Li 2 O−SiO 2 −P 2 O 5 ; K 2 O−SiO 2 −P 2 O 5 et Na 2 O-SiO 2 -P 2 O 5
Etude du systeme SnF 2 −P 2 O 5 . On etudie le mecanisme de la fonte du verre, la structure du systeme en fonction de la composition, la dilatatation thermique, la densite, la durete et la stabilite chimique
The characteristics of combined buoyancy and thermocapillary flow for liquid metals in a rectangular cavity have been studied numerically. Results show that, for augmenting buoyancy and surface tension forces, qualitative flow patterns and isotherms are unchanged, but enhanced fluid velocities and heat transfer rates…
A computational method is presented for fitting woven fabric to nonalgebraic surfaces by using numerical-analysis techniques. The method is based upon modelling the process of smoothing fabric over a surface. Fabric co–ordinates are mapped onto the surface to be fitted. No assumptions are made about the surface to be…
Abstract To test the possibility that the structural Fe 3+ in clay minerals can be biologically reduced, nontronite was mixed with sucrose and an aqueous extract from a Chinese paddy soil and incubated for 14 d at room temperature. Reflectance spectra, x‐ray diffraction patterns and Fe 2+ /Fe 3+ ratios were determined…
Preparation de nouveaux complexes verts de cerium(IV) dans lesquels le metal est pris en sandwich entre deux coordinats macrocycliques differents (une porphyrine et une phtalocyanine) ont ete prepares et caracterises par spectroscopie UV-visible, RMN du proton, voltammetrie cyclique et diffraction RX a −100°C. Une oxy…