Materials Literature
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After a review of previous work, the authors show their results obtained in the study of the effect of pressure on the magnetization mechanisms of polycrystalline soft ferrites up to 1.5 kbar and in a temperature range from 263°K to 573°K. Three kinds of pressures were applied : hydrostatic pressure, lateral pressure…
Magnetocrystalline anisotropy and magnetostriction were measured for the single crystals of Fe-Si-Al alloys lying near the Sendust composition (85%Fe, 9.6%Si, 5.4%Al). The constants K1, λ100, λ111and λsare plotted in the concentration diagram of the Fe-Si-Al system. It was found that K1= 0 is realized in the region of…
Abstract not Available.
Abstract The partial vapor pressures of Mg(g) over the spinel solid solution system, MgO·nAl2O3(n=1.0, 2.0, and 2.8), have been measured by the mass-spectrometric Knudsen-cell method. In the temperature range from 1850 to 2300 K, the pressures are described by these equations: log[P(Mg,g)over 1.0-spinel/atm]=7.72±0.24…
Untersuchungen an vier ferritisch‐perlitischen Stählen unterschiedlicher chemischer Zusammensetzung und Korngröße sowie einem bainitischen Stahl mit Streckgrenzenwerten zwischen 200 und 630 N/mm 2 . Ermittlung deroberen und unteren Streckgrenze im Temperaturbereich zwischen 77 und 370 K bei Dehngeschwindigkeiten zwisc…
Recent researches on high silicon iron alloys in our laboratory are presented. In the field of 6.5%Si-Fe alloy sheet, the substitution of 1.5% aluminum for silicon improves the cold workability and retains the good magnetic properties of 6.5%Si-Fe sheet. By a splat cooling technique, XSi.YAl.(100-X-Y). Fe ribbons (4.0…
By heat-treating in the ridge region of the miscibility gap, the magnetic properties of the Fe-Cr-Co permanent magnet alloys have been remarkably enhanced. The optimum procedure of the heat treatments, such as thermomagnetic treatment and step-aging sequence for the "ridge" alloys, is examined. Such heat treatments ar…
Fine-grained sediments are those rocks, both hard and soft, carbonate and clastic, that have a dominant grain-size in the clay or silt grades (<63 μm). They are the most abundant sediments on the earth's surface and form between 50 and 750f the geological column. Classifications of fine-grained sediments have been…
Abstract Tervalent cobalt complexes of octaethylporphyrin (OEP) and tetraphenylporphyrin (TPP), [CoIII(OEP)(H2O)2]X (X=ClO4, BF4), [CoIII(OEP)(THF)2]ClO4, [CoIII(TPP)(H2O)2]X (X=ClO4), and [CoIII(TPP)(H2O)Y] (Y=Cl, Br, SCN, N3) were synthesized. Molecular weight measurements indicate that only [CoIII(TPP)(H2O)2]BF4 an…
Abstract The radiation crosslinking of poly(vinyl chloride), PVC, with trimethylolpropane trimethacrylate, TMPTMA, has been examined. The polyfunctional TMPTMA undergoes rapid polymerization incorporating the PVC into a three‐dimensional network. The kinetics and mechanism of these crosslinking reactions were studied…
In the most general case the orientation distribution of crystals in a polycrystalline sample is to be described by a function of orthogonal transformations which splits up into two functions of rotations corresponding to right- and left-handed crystals. The properties of these functions are influenced by crystal and…
This paper begins with a survey of amorphous magnetic alloy systems which are of interest for applications in electronics. Saturation, permeability, losses, shapes of the hysteresis loop, technological and elasto-magnetic properties are considered in comparison to crystalline alloys. The following applications are mai…
Because specialty fibers are expensive and are often blended with wool, there is a need to be able to distinguish between the two groups. Certain lustrous wools are even in diameter and have long scales like mohair, but there are visible differences in scale thickness and brightness. Cashmere and camel hair are fine a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetalloporphyrins with unusual geometries. 2. Slipped and skewed bimetallic structures, carbene and oxo complexes, and insertions into metal-porphyrin bondsKazuyuki Tatsumi and Roald HoffmannCite this: Inorg. Chem. 1981, 20, 11, 3771–3784Publication Date (Print):November 1,…
The deposition of zinc on Pb, Tl, Sn, and In has been investigated using cyclic voltammetry, potential pulse methods, x‐ray diffraction, and scanning electron microscopy. There is no evidence of underpotential deposition on any of the substrates and the nucleation overvoltage is 30–;40 mV. Thallium forms a surface all…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBinuclear ruthenium(II) porphyrins: reinvestigation of their preparation, characterization, and interactions with molecular oxygenJames P. Collman, Craig E. Barnes, Terrence J. Collins, Penelope J. Brothers, Judith Gallucci, and James A. IbersCite this: J. Am. Chem. Soc. 198…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSchiff base coupling of cyclic and high-polymeric phosphazenes to aldehydes and amines: chemotherapeutic modelsHarry R. Allcock and Paul E. AustinCite this: Macromolecules 1981, 14, 6, 1616–1622Publication Date (Print):November 1, 1981Publication History Published online1 Ma…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIntercalation of potentially reactive transition-metal complexes in the lamellar manganese phosphide sulfide host latticeRene ClementCite this: J. Am. Chem. Soc. 1981, 103, 23, 6998–7000Publication Date (Print):November 1, 1981Publication History Published online1 May 2002Pu…
1. Substrate analogue CoA derivatives were applied as inhibitors of citrate synthase. Substitution of the acyl-CoA oxygen next to sulfur by hydrogen was without marked influence on the affinity. 2. Carboxymethyl-CoA, a structural analogue of enolic acetyl-CoA, was characterized as a transition state analogue by an aff…
Abstract The solubilities of six phenolic antioxidants in polypropylene and polyethylene were measured between 50°C and 100°C. Measurements were also made of their solubilities in a range of liquid alkanes. The measured solubilities at 70°C were consistent with regular solution theory and could be used to predict valu…