Oxidation of Zircaloy-4 under Limited Steam Supply from 1,000 to 1,400°C
KEYWORDS: chemical kineticscladdingoxidationsevere accidentSFDsteam starvationtemperature dependencetime dependencevery high temperatureZircaloy 4
Materials Literature
文献浏览
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。
INFLUENCE OF INTENSIVE CULTIVATION AND IRRIGATION ON EXCHANGEABLE CATIONS AND SOIL PROPERTIES
We studied the effect of long-term (40 yr), intensive cultivation and irrigation on soil properties in the Jordan Valley, Israel, which had experienced declining crop yields. Three cultivated soil pedons and an equivalent undisturbed soil from the same site were analyzed for several soil properties. The major differen…
Vaporization Study on Vanadium-Oxygen Solid Solution by Mass Spectrometric Method
The vapor pressures over vanadium-oxygen solid solution (0.001≦O/V≦0.145) were measured by mass-spectrometric method in the temperature range of 1,855–2,117K. The main vapor species were observed to be V(g) and VO(g). The vapor pressure of V(g) is higher than that of VO(g) over the solid solutions with all O/V ratios…
Stress corrosion cracking and hydrogen embrittlement of high-strength nonmagnetic alloys in brines
Unexpected brittle failures of UNS N05500 drill string parts and nonmagnetic drill collars have recently been observed in cases where the UNS N05500 components were galvanically coupled to carbon steel in concentrated salt solutions at temperatures between ambient and higher than 373 K (100 C). Cracking occurred prefe…
Effect of copolymers modifying PVC on its physical and mechanical properties and its UV‐radiation resistance, VII. The influence of structure of pvc chains on tensile strength of irradiated films
Abstract PVC films and films containing the modifying copolymers, irradiated by increasing dose of UV‐radiation of λ = 253.7 nm were investigated. It was previously stated 1–3 that 1–10% content of modifying copolymers in PVC films distinctly change the resistance of PVC to UV‐radiation and this is the cause that phot…
Voltammetry of Sodium Polysulfides at Metal Electrodes
The interaction of sodium polysulfides and candidate metals for the current collector and cell casing in sodium/sulfur cells at 300° and 350°C is explored using cyclic voltammetry. The metals investigated are chromium and molybdenum, and data for voltammetric sweeps at rates of 10–500 mV/s in are reported. The results…
Effects of vanadium on upper-nose temper embrittlement and other Mechanical properties of Cr–Ni–Mo low-alloy steels
Large components manufactured from Cr–Mo–Ni low-alloy steels are usually heavily tempered for the purpose of stress relieving, with resultant undesirable loss of strength and the inception of upper-nose temper embrittlement (UNTE). This paper describes an investigation on the effects of vanadium additions and of varia…
The Freely Expanding Ring Test—A Test to Determine Material Strength at High Strain Rates
The freely expanding ring test (ERT) is a conceptually simple test for determining the stress-strain behavior of materials at large strains and at high strain rates. This test is conducted by placing a thin ring of test material in a state of uniform radial expansion and then measuring its subsequent velocity-time his…
Relativistic Effects in the Photoionisation of Heavy Atoms: Cooper Minima
Cooper minima are known to profoundly affect photoionisation cross sections. They become particularly important in high-Z atoms where relativistic effects split each nonrelativistic Cooper minimum into three minima (two for s states). In addition, there are significant splittings in these 'triplets'. In this paper, th…
Molecular environment effects on the reactivity of porphyrins. Influence of basket-handle superstructures on the formation of five-coordinated complexes of iron(II) with neutral nitrogen bases
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular environment effects on the reactivity of porphyrins. Influence of basket-handle superstructures on the formation of five-coordinated complexes of iron(II) with neutral nitrogen basesDoris. Lexa, Michel. Momenteau, Jean Michel. Saveant, and Feng. XuCite this: J. Am.…
Crazing in thin films of styrene–butadiene–styrene block copolymers
Abstract The mechanism of craze initiation and growth and its relationship to mechanical properties has been studied in thin films of styrene–butadiene–styrene (SBS) block copolymers. Optical microscopy and transmission electron microscopy were used to examine three copolymers which has a spherical rubber domain morph…
Some properties of Zn3P2 polycrystalline films prepared by hot-wall deposition
Zinc phosphide (Zn3P2) thin films have been deposited by hot-wall deposition technique on glass substrate, and the deposition behaviors as well as structural properties of deposited films are studied. The source temperature and the temperature difference between source and substrate mainly affect the growth rate. Scan…
Cell Adhesion and Interactions with Biomaterials
The related phenomena of biocompatibility and biodegradation are of major concern in the selection of synthetic polymers for use as implantable biomedical devices. These properties are largely determined by the consequences of the cellular interactions that occur at the polymer/tissue interface during inflammation. Us…
Stress corrosion cracking and hydrogen embrittlement of cold worked AISI type 304 austenitic stainless steel in mode I and mode III
Comparative testing of cold worked AISI type 304 austenitic stainless steel in mode I and mode III under conditions of cathodic charging and chloride stress corrosion cracking (SCC) has been used to assess the role of hydrogen in SCC. The experimental results of these tests and those previously published have been use…
Acceleration and time to fail
Abstract A physical model of the growth of chemically related failures in electronic components is developed. This model is used to demonstrate that time to failure is as much a function of the component geometry as it is of the activation energy of the reaction. Further interpretation suggests that for any specified…
Chemistry of Detrital Biotites and Their Phyllosilicate Intergrowths in Sandstones
Abstract Microprobe analyses of optically homogeneous detrital biotites from sandstones of the Visingsö Group and the Dala Sandstone, Sweden, revealed a consistently low K content (generally <0.75 atom/formula unit) and variable amounts of Fe, Mg, Al, and Si. Electron probe profiles of some biotite grains indicated…
Short- and long-range correlations in the S=1/2 ferromagnetic chain system ( C 6 D 11 ND 3 ) CuBr 3
The short- and long-range spin correlations in the quasi-one-dimensional S=(1/2) system (${\mathrm{C}}_{6}$${\mathrm{D}}_{11}$${\mathrm{ND}}_{3}$)${\mathrm{CuBr}}_{3}$ (CHAB-D14) have been investigated by (quasi) elastic neutron scattering experiments. The temperature dependence of the sublattice magnetization below $…
Acoustic Theory Applied to the Physics of Electrical Breakdown in Dielectrics
In order to stimulate further thought and research within the science of dielectrics, this paper discusses the remarkable correlation between acoustic theory and the physics of electrical breakdown in dielectrics. Following a brief, simplified fied review of acoustic theory and the propagation and attenuation ation of…
Ytterbium-DTPA A Potential Intravascular Contrast Agent
Ytterbium-DTPA was evaluated as a potential intravascular contrast agent. Ytterbium-DTPA was synthesized from ytterbium oxide and diethylene triamine penta-acetic acid (DTPA). CT scans of increasing concentrations of ytterbium and iodine showed that at 125 kVp, ytterbium was denser than an equal concentration of iodin…
Chemical modification of cotton fiber by alkali‐swelling and substitution reactions—acetylation, cyanoethylation, benzoylation, and oleoylation
Abstract By impregnating cotton fiber with alkaline swelling agents and reacting with some chemical agents which can be substituted for the hydroxyl groups on cellulose molecules in the presence of alkali, highly accessible or decrystallized cotton fibers can be obtained. As the effective substitution reactions, acety…