Materials Literature
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AbstractAfter discharge from the reactor and transport to Sellafield, irradiated nuclear fuels are stored in water filled ponds before being reprocessed. BNFL has established fuel management strategies and a pond water chemistry which ensures minimal corrosion of stored fuels. BNFL's materials selection policy for its…
Abstract This article examines the embrittlement of iron and carbon steels. It describes compositional, processing, and service conditions that contribute to the problem and presents examples of how embrittlement influences mechanical properties. Embrittlement due to hydrogen is the most common form of embrittlement a…
The tinted weldments of stainless steels were investigated on their corrosion behavior in aqueous chloride solution. The oxide scale formed on the simulated HAZ of SUS316L was studied by suface analysis techniques. Generally, the pitting resistance of the HAZ with the scale was deteriorated compared with ones whose sc…
The dynamic performance characteristics of polyphase hysteresis motors are presented. A mathematical model to predict the starting and synchronization process of such motors under various operating conditions is given. The model offers a tool for studying the dynamic stability of the hysteresis motor for small-scale d…
Abstract Three distinct peaks at 80, 175, and 325°C were identified in the dynamic derivative TGA curves of PMVEMA and PMVEMAC at a 10°C/min heating rate. These peaks were attributed to free water removal, anhydride formation, and polymer degradation, respectively. The kinetics of the anhydride formation were studied…
Abstract The paper compares the overall performance of a wide range of numerical procedures that can be used to integrate through the thickness of plates and shells. Results are presented for the accuracy of the calculations when there are discontinuities in the stress through the depth of the plate, and the available…
Sintering of CuO compacts has been studied and the basic mechanical properties of polycrystalline CuO have been determined. Specimens of 90% density can be fabricated by sintering CuO powder at 1010C for ~24hr. From data for 85-90%-dense specimens, the following elastic properties have been calculated for 100%-dense s…
Lead niobates with tungsten bronze-type crystal structure have been employed as photocatalysts, and the additive effects of potassium upon the photocatalytic activity for the production of hydrogen from water and upon the photovoltaic properties have been studied. With the addition of K, the photocatalytic activity in…
Infrared hydroxyl librational bands of talc-willemseite solid solutions (Mg–Ni talcs) have been explained by analogy with those of amphiboles. Two OH librational bands at 710 and 668 cm−1 appear in talc-willemseite solid solutions, because the degeneracy of a single OH librational vibration in talc and willemseite end…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and characterization of a paramagnetic osmium-ruthenium double bondJames P. Collman and James M. GarnerCite this: J. Am. Chem. Soc. 1990, 112, 1, 166–173Publication Date (Print):January 1, 1990Publication History Published online1 May 2002Published inissue 1 Januar…
The synthesis, characterization, electrochemical properties, and preliminary X-ray structural data of the title electron donor, a hybrid of bis(ethylenedithio)tetrathiafulvalene and bis(ethylenedioxy)tetrathiafulvalene, are presented.
A new binuclear complex [Cu2(dien)2(OH)(ClO4)3](dien = diethylenetriamine) has been synthesized and its crystal and molecular structure determined by X-ray diffraction. It crystallizes in the monoclinic space group P21, with Z= 2, a= 11.896(7), b= 9.424(3), c= 11.468(7)Å, and β= 117.97(4)°. The structure consists of d…
Mimetite Pb 5 (AsO 4 ) 3 Cl, M = 1488.21 Daltons, space group P 6 3 / m , a = 10.250(2), c = 7.454(1) Å, U = 678.214(2) Å 3 , Z = 2, D calc = 7.26 g cm −3 , λ = 1.237 Å, μ (neutron) = 2.85 cm −1 . The structure of the lead chloroarsenate mineral, mimetite, an isomorph of apatite, was refined using single crystal neutr…
An investigation is reported in which the dimensions of cellulose crystallites in cotton lint were measured by using X-ray techniques. It was found that, when the relative humidity was increased from 20 to 90%, the apparent crystallite size in the (0,0,1) direction grew larger. This result shows that there are high in…
The temperature dependence of the coercivity /sub J/H/sub c/ of Fe/sub 3/B-based Nd/sub 4/Fe/sub 77/B/sub 19/ permanent magnetic materials is analyzed. The coercivity of these melt-spun materials vanishes above the Curie temperature of the minor phase Nd/sub 2/Fe/sub 14/B. Nd/sub 4/Fe/sub 77/B/sub 19/ magnets also sho…
▪ Abstract The phase-field method has recently emerged as a powerful computational approach to modeling and predicting mesoscale morphological and microstructure evolution in materials. It describes a microstructure using a set of conserved and ...Read More
Research has been conducted on the effects of the particle size distribution of a glass batch on the reaction path leading up to the first glassy phase. The research has involved DTA/TGA, X‐ray diffraction, and SEM/EDS studies of particle size effects on the reaction path. The results of the studies were compiled to g…
The fracture strength of Nd/sub 15/Fe/sub 77/B/sub 8/ and Nd/sub 14.5/Dy/sub 1.5/Nb/sub 1/Fe/sub 76/B/sub 7/ sintered magnets has been measured to be 285(40) MPa and 240(48) MPa, respectively. The fracture mechanism appears to be controlled by a critical level of tensile stress. In all the cases considered, Nd-Fe-B-ty…
Abstract
The first US case of human nanophyetiasis that does not involve ingestion of raw or undercooked salmonid fishes is reported. The patient worked with highly infected fish. Hand contamination with the infectious metacercariae of the digenetic trematode Nanophyetus salmincola (family Troglotrematidae) occurred during the…