Materials Literature
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The effect of continuous additions of sodium hypochlorite (NaClO) on the localized corrosion resistance of stainless steels (SSs) exposed to natural seawater flowing at 1.5 m/s has been studied in field tests lasting 75 days. Residual chlorine of 0.1 to 0.2 ppm and 1 to 2 ppm in seawater were tested. The continuous pr…
Several models of shield wire were tested with the Shiobara HVDC (high-voltage direct current) test line. The models contain typical standard wires that are generally used to reduce field effects at ground level, neutral conductors placed at lower parts of the DC line, and an earth corona model to intentionally cancel…
Mixed azomethine mononuclear copper (II) complexes of the type [CuLL'] where, L = 1-phenyl-3-methyl-4-benzoylimine-2-pyrazolene-5-ol and L'[dbnd]acetylacetonimine or benzoylacetonimine or dibenzoylmethanimine or L = acetylacetonimine and L' = benzoylacetonimine or dibenzoylmethanimine or L = benzoylacetonimine and L'…
Abstract The details of an unscheduled polymerization of acrylic acid initiated by indirect heating have been characterized by in‐depth analysis of the polymer, kinetic and thermodynamic calculations, and heat and material balances on the system. The data fit together to give a consistent picture of the polymerization…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetic structures and properties of .alpha.-chromium phosphate and .alpha.-chromium arsenateJ. Paul Attfield, Peter D. Battle, Anthony K. Cheetham, and David C. JohnsonCite this: Inorg. Chem. 1989, 28, 7, 1207–1213Publication Date (Print):April 1, 1989Publication History P…
In this paper a comparative analysis on the energetics of ester type plasticizers such as dioctyl adipate (DOA), dioctyl phthalate (DOP), dibutyl sebacate (DBS), isodecyl pelargonate (IDP), trioctyl
Abstract The tensile strength degradation of nylon 66 and Kevlar 29 yarns was studied at elevated temperatures and over a broad range of relative humidities. The degradation rates for nylon are initially slow but increase rapidly, suggesting the depletion of an inhibitor. Kevlar showed no evidence for similar inhibito…
The deformation at room temperature of thick (ca. 2 mm) and thin (ca. 1000 Å) films of polybutene was characterized by electron microscopy and electron x-ray diffraction. The thin films, as studied, draw by micronecking whereas the thick films draw uniformly. In both types of samples the details of the deformation pro…
In‐situ ellipsometry at a wavelength of 632.8 nm is used to analyze silicon surfaces in an aqueous ambient. The ellipsometric data indicate that a surface which is optically quite similar to bare Si is obtained when the native film is etched from a Si substrate by aqueous . In contrast, the surface obtained by etching…
Abstract The reaction of acetanilide derivatives with benzyltrimethylammonium dichloroiodate in acetic acid in the presence of ZnCl2 at room temperature or at 70 °C gave iodo-substituted acetanilide derivatives in good yields.
Indium tin oxide (ITO) films (0.3 μm thick), with a doping level of 28 mol% SnO 2 , were prepared by a radio frequency magnetron sputtering mehthod. The effects of postannealing on the microstructure and the electrical properties of the ITO films were investigated. The as‐sputtered film showed an amorphous structure,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfrared spectra of phosphorus oxides (P4O6, P4O7, P4O8, P4O9 and P4O10) in solid argonZofia Mielke and Lester AndrewsCite this: J. Phys. Chem. 1989, 93, 8, 2971–2976Publication Date (Print):April 1, 1989Publication History Published online1 May 2002Published inissue 1 April…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation, molecular structure, and magnetism of bis(.mu.-carbonate)-.mu.-oxobis[1,4,7-trimethyl-1,4,7-triazacyclononane]diiron 4.25 hydrateStefan Drueke, Karl Wieghardt, Bernhard Nuber, and Johannes WeissCite this: Inorg. Chem. 1989, 28, 7, 1414–1417Publication Date (Prin…
Samples in the pseudobinary AIN–AI 2 OC were fabricated by hot‐pressing mixtures of ANI, AI 4 C 3 , and AI 2 O 3 powders in graphite dies in an atmosphere of nitrogen. The resulting dense samples were subjected to thermal treatments over a range of temperatures from 1550° to 1950°C. The hot‐pressed as well as annealed…
Four materials characterized by their differing values of solid surface tension were implanted into different locations within the tube wall of a shell and tube heat exchanger. the implants were subjected to milk flowing at temperatures from the ambient to the ultra-high temperature (UHT) range (150°C) for contact tim…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNew classes of monomeric and dimeric square-planar chromium(II) aryloxides: syntheses and structuresJilles J. H. Edema, Sandro Gambarotta, Fre Van Bolhuis, Wilberth J. J. Smeets, and Anthony L. SpekCite this: Inorg. Chem. 1989, 28, 7, 1407–1410Publication Date (Print):April…
To preserve more or less the gels textural properties during their drying step three main methods can be applied which differ roughly by the temperature and pressure range in which they are conducted. In increasing temperatures and pressures ranking one may distinguish : i) the freeze drying process giving "cryogels"…
Ultrasonic velocities at 10 MHz have been measured in two series of lithium, sodium, and potassium phosphomolybdate glasses with two fixed P 2 O 5 concentrations. Elastic moduli, Poisson's ratio, and Debye temperature have been calculated. The composition dependence of most of the properties of lithium glasses exhibit…
Abstract EXAFS and Mössbauer data on synthetic silver-rich tetrahedrite, (Cu, Ag) 10+x Fe 2−x Sb 4 S 13 , reveal the presence of Fe 2+ and Fe 3+ the former occupying trigonal planar sites and the latter tetrahedral sites. There is also a clear relationship between increased silver substitution and an increase in Fe 2+…
The effect of some transition and heavy metal cations on the dissolution of aluminum has been investigated in neutral and acid Cl − solutions by potentiodynamic polarization, gravimetric and thermometric measurements, and surface examination by SEM. At low cation concentrations, deposition of the metals corresponding…