Materials Literature
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Carburization is a major mode of corrosive degradation of high chromium alloy materials in many high temperature processes. The process generally involves the transfer of carbon from the gas phase onto the alloy surface followed by diffusion of carbon to the alloy interior with concurrent precipitation of chromium‐ric…
Investigations of helium effects in metals at the Savannah River Laboratory have been carried out by introducing helium by radioactive decay of tritium. This process does not create concurrent radiation damage, such as accompanies ion implantation and (n,α) reactions. The process has its own peculiarities, however, wh…
The fuel fragmentation is one of the important subjects in the field of molten fuel-coolant interaction (MFCI) since it is one of basic processes of the MFCI, and it has not yet been made clear enough. Accordingly, U02 fuel fragmentation was studied in a postulated reactivity initiated accident (RIA) condition by the…
The stress corrosion cracking of sensitized stainless steels due to thiosulfate and tetrathionate has been associated with an increased rate of anodic dissolution in the active‐passive region of voltammetric scans, via the mutual sensitivity of both phenomena to a series of anionic inhibitors. The increased anodic dis…
Abstract Three series of segmented polyurethanes with different soft segment lengths and concentrations were examined by TMA, DMA, and mechanical methods. Maximum tensile strengths were obtained when ssc was 40–50%, which was explained by a specific interlocking morphology. No significant effect of soft-segment chain…
Permanent magnet compounds are basically ferromagnets with uniaxial anisotropy. In different cases, the magnets are elaborated by sintering of powders previously oriented and compressed under field. The value of the remanent induction Br is directly dependent on the degree of crystallites alignment, and we present in…
It must be first of all asked what rust really is. The question may seem to have an obvious answer. Anybody who has had anything at all to do with iron is acquainted with the effect of rust. Nevertheless, it has to be admitted that even a number of researchers who have dedicated themselves to the subject do not have s…
Clay subsoils were analysed by a procedure that uses a choline chloride reagent to distinguish double-layer exchangeable cations from other more strongly adsorbed forms extractable by an ammonium sulfate reagent. In those clay subsoils that contained little organic matter, the exchangeable cations made up nearly all o…
Action d'agents antimicrobiens dans des mousses de polyurethanne, polyester et PVC pour divers usages
Skinfold thickness was measured at five sites in 750 infants. The study population was unselected except that twin pregnancies and the infants of diabetic mothers were excluded, and very preterm infants were under represented. A pilot study had indicated that skinfold measurement was most reproducible at the thigh sit…
Abstract The pyrolysis of polymethyl acrylate is reported with identification of the major pyrolysis products. The mechanism involving random homolytic scission of the chain followed by a series of intermolecular and intramolecular transfer reactions as proposed by Cameron and Kane and extended by Haken, Ho, and Hough…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermomechanical behavior of modified asphaltsVikas M. Nadkarni, Arun V. Shenoy, and Johnson MathewCite this: Ind. Eng. Chem. Prod. Res. Dev. 1985, 24, 3, 478–484Publication Date (Print):September 1, 1985Publication History Published online1 May 2002Published inissue 1 Septe…
Conducting polymers with high electrical conductivity like doped polypyrrole are used successfully as radiation shielding meterials. They are especially effective to shield an electric field with an attenuation higher than 30 dB in the range of 3 MHz–300 MHz with doped polypyrrole of 35 µ thickness, bu not effective f…
Metoclopramide hydrochloride (MCPHCl.H2O) and metoclopramide base (MCP) have been studied by DSC, thermomicroscopy, X-ray diffraction and infrared spectroscopy. MCPHCl.H2O does not readily lose water of crystallization either from the solid state or from the melt, but depending on the conditions, dehydration can give…
Development of a rotational power loss measuring system based on the wattmeter method for a single Epstein strip and a brief discussion of magnetization processes of Si-Fe sheets under the rotational magnetizing condition are described. The pick-up coil system has a configuration with a flux search coil sandwiched by…
A ceramic electrolysis cell and a palladium diffuser have been developed in Japan and tested with tritium at the Tritium Systems Test Assembly (TSTA) at the Los Alamos National Laboratory, to test their feasibility as possible upgrades for the fuel cleanup system (FCU). The ceramic electrolysis cell, made of stabilize…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOptical properties of pyrromethene derivatives. Possible excited-state deactivation through proton tunnelingJ. A. Pardoen, J. Lugtenburg, and G. W. CantersCite this: J. Phys. Chem. 1985, 89, 20, 4272–4277Publication Date (Print):September 1, 1985Publication History Published…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectronic and structural properties of a reactive metalloporphyrin with N-oxide axial ligands. Crystal and molecular structure of bis(2,6-lutidine N-oxide)(tetraphenylporphinato)manganese(III) perchlorateCraig L. Hill and Michael W. WilliamsonCite this: Inorg. Chem. 1985, 2…
The parameters of gas-metal interaction solubility S, diffusivity D and permeability of protium and deuterium in stainless steel 316L have been determined in the temperature range from 600 to 900 K and in the pressure range from 102 to 105 Pa. The results can be presented by: where KS (Sieverts’ constant) is given in…
Basic characteristics of photomodulation spectroscopy are discussed. The method is applied to studying the band-tail states in a-Si:H and a-Ge:H, and the dangling-bond states in irradiated a-Si:H, trans-(CH)x, and chalcogenide glasses.