Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
In the framework of the Organization for Economic Cooperation and Development/Committee on the Safety of Nuclear Installations Task Group on Three Mile Island Unit 2 (TMI-2), the Commissariat ??? I’Energie Atomique examined five samples retrieved from the damaged reactor core: a slightly damaged fuel rod chunk from as…
Detailed microstructural and microchemical examinations of samples of debris extracted from the lower plenum region of the Three Mile Island Unit 2 reactor were performed using optical and electron-beam instrument microscopy. Results of this study indicate that this material was a previously molten ceramic consisting…
Core debris samples obtained from different regions of the Three Mile Island Unit 2 (TMI-2) core were examined to characterize the interaction among core components and the coolant, to determine the peak temperatures at which the interactions occurred, and to evaluate core melt progression in TMI-2. Estimates of peak…
Chemical interactions that may occur in a light water reactor fuel rod bundle containing Ag-In-Cd absorber rods or Al203/B4C burnable poison rods with increasing temperature up to the complete melting of the components and the reaction products formed are described. The kinetics of the most important chemical interact…
Three samples from the ceramic melt, the lower crust, and the lower plenum of the previously molten part of the Three Mile Island Unit 2 core have been analyzed by X-ray diffraction to determine the compounds formed as a result of the accident in 1979. Supporting analyses were performed by gamma spectroscopy and parti…
Samples of the bores obtained from the melted core of the Three Mile Island Unit 2 (TMI-2) reactor were investigated as part of the TMI-2 accident evaluation program. The samples included fuel rod segments, control rod cladding, melted core rocks, and powder debris from various bores into the reactor core.The microstr…
The primary objective of the U.S. Department of Energy Three Mile Island Unit 2 (TMI-2) research program, conducted by the EG&G Idaho TMI-2 Accident Evaluation Program, is to develop a comprehensive and consistent understanding of the TMI-2 accident. The accident scenario developed from this research is presented, inc…
Abstract Stabilization of ZnO photoanodes was investigated using ZnO thin film electrodes under controlled potential in various pH solutions; the effects of light intensity and agitation were also studied. The photocorrosion of ZnO photoanodes was suppressed at sufficiently cathodic potentials and/or at low light inte…
The obtaining of the representative matrices of the I icosahedral rotation group by means of the descent symmetry from the K group of rotations of the sphere.
Thermal Conductivity of CuSbSe2 and CuBiSe2 have been studied in the solid and liquid state in a wide range of temperatures. Measurements of thermal conductivity were carried out using the concentric cylinder method which is based on the flow of heat through a cylindrical wall.
Abstract Reactions between hydrogen chloride, HCl, and either hydrocerussite, 2PbCO 3 . Pb(OH) 2 , or an orthophthalate of lead suspended in di(2‐ethylhexyl)phthalate, DOP, at 180°C are discussed as models of what should happen during the stabilization of PVC if thermal dehydrochlorination were to yield HCl. There is…
Abstract Small‐angle neutron scattering (SANS) is a useful technique for investigating the anisotropy of density fluctuations when these have single orientation direction. The commonly used method for treating asymmetric SANS data is to analyze sectors of data parallel and perpendicular to the orientation axis. Other…
Stress corrosion cracking (SCC) of zircaloy cladding is generally believed to be the major failure mode of current nuclear fuel in light water reactors. Iodine, an abundant fission product, has been identified to possibly cause zircaloy to become susceptible to SCC. An understanding of the kinetics of the reaction bet…
An application of the EPR method to investigation of the ferroelastic domain structure is presented. The relations between the symmetry elements of the high temperature and the ferroelastic phases have been described in the case of EPR of Cr3+ admixture ions in KSc(MoO4)2 and KH3 (SeO3)2.
The purpose of this report is to document work done on the development of calcium lanthanum sulfide (CaLa2S4) as an infrared (IR) dome material for use in the 8- to 12-micrometer region.
Abstract The MM2 force field has been extended so that calculations may be carried out on siloxanes. The parameters chosen give a good fit to available experimental data.
Glasses in the calcium alumino/galliosilicate system were prepared. All glasses contained 30 mol% CaO. The density, refractive index, and infrared spectra were measured. These glasses exhibited additive behavior in all properties, which implies that Al and Ga play isostructural roles in the glass network. These result…
Abstract Erstmals wurde farbloses Li 3 BiO 3 dargestellt, das triklin, P 1 , mit a 902,38(35) pm, b = 973,02(48) pm, c = 923,53(46) pm, α = 114,069(38)°, β = 89,291(36)°, γ = 107,504(35)°, Z = 8 kristallisiert. Die Parameter wurden nach “least squares” (3565 von 3969 I° (hkl)) verfeinert, R = 7, 86%, R w = 6,93%, Mok…
<div class="htmlview paragraph">A study was conducted to determine the feasibility, performance, and emissions of a Detroit Diesel Corporation 8V-71 transit bus engine using ignition-improved methanol as fuel. Major objectives to be achieved by the study were: 1) to determine the minimum amount of ignition impro…
Abstract The adsorption of a mixture of cationic (c) and anionic (a) surfactants on cellulose fibers is highly dependent on the molar ratio a/c with a maximum at a/c = 0.9. When a/c is > 1.1 the adsorption is negligible. The presence of nonionic surfactants in the solution impairs the adsorption of the ionic specie…