Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and properties of mononuclear and ferromagnetically coupled dinuclear manganese complexes with 2,2'-biphenoxideAnn R. Schake, Edward A. Schmitt, Andrew J. Conti, William E. Streib, John C. Huffman, David N. Hendrickson, and George ChristouCite this: Inorg. Chem.…
High alloyed duplex stainless steels, referred to as super duplex, are being used increasingly for applications in corrosive environments. The higher Cr and Mo contents of these materials can lead to susceptibility to σ-phase precipitation, even during short time exposures to high temperatures. The 800°C aging of a hi…
The effects of corona wind on the heat transfer rate from a heated horizontal cylinder are described. Corona discharge and a corona wind are developed when a high voltage is applied to an electrode (emitter) near a grounded surface. In this study the corona wind is directed toward the lower region of the grounded cyli…
The molecular weight distributions of poly(ethylene terephthalate) fibers aminolyzed with selected primary amines (namely, methylamine, ethylamine, n-butylamine, and ethanolamine) were determined by using gel permeation chromatography. Initially the shape of the differential molecular weight distribution (DMWD) curve…
Magnetization measurements reported for ${\mathrm{Fe}}_{3\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Ti}}_{\mathit{x}}$${\mathrm{O}}_{4}$ in the composition range 0\ensuremath{\le}x\ensuremath{\le}0.55 were used to determine the magnetic-anisotropy coefficients as a function of x and of temperature. Magnetic measurem…
(1991). Statistical Methods in Accelerated Life Testing. Technometrics: Vol. 33, No. 3, pp. 360-362.
This is the first in a pair of papers describing the development of the computational corrosion analysis accomplished at the Naval Underwater Systems Center and the University of Connecticut over the past decade. This paper outlines the mathematical representation of the corrosion problem to be solved in terms of the…
An analysis is presented of two schemes which have been proposed for the determination of the temperature dependence of homogeneous crystal nucleation rates in glasses via DTA measurements. The first method is based upon the postulate that the inverse of the temperature at which the DTA crystallization rate is maximum…
The growth of VO2 and V2O3 thin films by reactive sputtering has been investigated. Previously reported studies of such thin films have often presented ambiguous results concerning the precise nature of the layers produced. A thorough and comprehensive characterization program including x-ray diffraction, scanning ele…
Abstract In order to render the surface of silicone hydrophilic without changing its bulk properties, acrylamide was grafted onto its surface. A silicone sheet was first treated with a corona discharge in air to introduce peroxides onto the surface. The concentration of peroxide introduced to the surface was determine…
The synthesis and dopaminergic activity of a series of C3 and nitrogen-substituted 1-(aminomethyl)-3,4-dihydro-5,6-dihydroxy-1H-2-benzopyrans (isochromans) is described. The synthesis of the compounds was stereospecific for the 1,3 cis isomer, and the enantioselective synthesis of both enantiomers of one of the analog…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTResonance Raman characterization of ferric and ferryl porphyrin .pi. cation radicals and the FeIV:0 stretching frequencyShinji Hashimoto, Yasuhisa Mizutani, Yoshitaka Tatsuno, and Teizo KitagawaCite this: J. Am. Chem. Soc. 1991, 113, 17, 6542–6549Publication Date (Print):Aug…
Abstract Meadowfoam dimer acids have been prepared in a thermal clay‐catalyzed reaction. Reaction conditions have been optimized, and yields of 44% were obtained with 2% water and 6–8% of an acid‐washed montmorillonite clay, based on the meadowfoam fatty acids. Purity of the distilled dimer acids was 79–89% with most…
Advances in machine learning have impacted myriad areas of materials science, such as the discovery of novel materials and the improvement of molecular simulations, with likely many more important developments to come. Given the rapid changes in this ...Read More
Single‐phase, cubic solid solutions of baseline composition 25% Y 2 O 3 —75% Bi 2 O 3 with and without aliovalent dopants were fabricated by pressureless sintering of powder compacts. CaO, SrO, ZrO 2 , or ThO 2 was added as an aliovalent dopant. Sintered samples were annealed between 600° and 650°C for up to 4000 h. S…
Polycrystalline, tetragonal ( t ′) zirconia samples containing 3 and 4 mol% yttria were fabricated by annealing pressureless‐sintered samples in air at ∼ 2100°C for 15 min. The grain size of these fully tetragonal samples was on the order of 100 to 200 μm. Domain structure of the samples and of a 3‐mol%‐yttria‐doped t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe influence of solvent polarity of the nonradiative decay of exciplexesP. Van Haver, N. Helsen, S. Depaemelaere, M. Van der Auweraer, and F. C. De SchryverCite this: J. Am. Chem. Soc. 1991, 113, 18, 6849–6857Publication Date (Print):August 1, 1991Publication History Publis…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMononuclear and dinuclear ruthenium complexes with triazole containing ligands; fine-tuning of the spectroscopic propertiesRonald Hage, Jaap G. Haasnoot, Jan Reedijk, Renyi Wang, and Johannes G. VosCite this: Inorg. Chem. 1991, 30, 17, 3263–3269Publication Date (Print):Augus…
The Eu3+ and Y3+ complexes of a series of N,N'-bis(carboxymethyl) macrocyclic ether bis(lactone) ligands derived from ethylenediaminetetraacetic acid (EDTA) were characterized in solution by using Eu3+ laser-induced luminescence and 1H and 13CNMR spectroscopy. The complexation of EDTA was also studied for comparison p…
Crystalline \ensuremath{\alpha}-boron consists of ${\mathrm{B}}_{12}$ icosahedra in a rhombohedral lattice of R3\ifmmode\bar\else\textasciimacron\fi{}m space-group symmetry. We here carry out a classical force-field analysis of the lattice vibrations. The q=0 Brillouin-zone vibrations are treated as those of a ${\math…