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。
This report summarizes work performed by Argonne National Laboratory on long-term embrittlement of cast duplex stainless steels in LWR systems. Metallurgical characterization and mechanical property data from Charpy-impact, tensile, and J-R curve tests are presented for several experimental and commercial heats, as we…
The resonance method was applied to measure shear mechanical properties of liquids, and it has thus been established that such low-viscosity liquids as water, cyclohexane, hexadecane, and dibutyl phthalate possess a shear elasticity of about ${10}^{6}$ dyn/${\mathrm{cm}}^{2}$ at a frequency of shear oscillations of ab…
A two-wavelength method (δ synthesis) which deals with the experimental distinction of elements with similar atomic number by means of single-crystal X-ray diffraction measurements is presented. This method uses the characteristic wavelength dependence of the anomalous-dispersion correction terms f′ and f′′ close to t…
Summary This paper presents the results of laboratory experiments carried out to investigate the formation of barium sulfate and strontium sulfate [(Ba, Sr)SO4] solid solution in multi-pressure-tapped cores. Two brines, one barium- and strontium-rich and the other sulfate-rich, were mixed in a core plug. Pressure diff…
Surface-relief diffractive optical elements made interferometrically typically are recorded with the off-axis technique, for which the fringe maxima lie on planes that are predominantly perpendicular to the recording surface and with an intensity variation that is sinusoidal. Such a structure can be readily replicated…
The internal structure of spray‐dried alumina granules was characterized by optical microscopy by immersing them in a liquid having a refractive index close to that of alumina. This method provides a unique technique for the detailed analysis of the internal structure of spray‐dried granules.
A simple electro-optical method was developed to characterize the temperature dependent viscoelastic coefficient of six nematic liquid crystals with different conjugation lengths. Results were then used to test seven most frequently used models for rotational viscosity (y1). Computer results show that some models fit…
The transition character of paraelectric-to-ferroelectric phase transition and its relation to lattice soft-mode behavior in the solid solutions of (Ba,Sr)TiO3, (Ba,Ca)TiO3, Ba(Ti,Zr)O3, and Ba(Ti,Sn)O3 were investigated by the measurements of dielectric constants in the temperature range from −30 to 150 °C, and x-ray…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal dehydration of calcium hydroxide. 1. Kinetic model and parametersAngel Irabien, Javier R. Viguri, and Inmaculada OrtizCite this: Ind. Eng. Chem. Res. 1990, 29, 8, 1599–1606Publication Date (Print):August 1, 1990Publication History Published online1 May 2002Published…
Abstract Na-beidellite, a member of the smectite group, was grown hydrothermally from a gel of composition 0.35Na 2 O·2.35Al 2 O 3 ·7.3SiO 2 in NaOH solutions at a pH between 7.5 and 13.5, a pressure of 1 kbar, and a temperature of 350°C. The synthetic Na-beidellite was characterized by means of scanning electron micr…
The synthesis and properties of calcium, strontium, and barium aluminoborate glass‐ceramics are described in this paper. Glass powder compacts near the RO‐Al 2 O 3 ‐B 2 O 3 stoichiometry were sintered and crystallized below 1000°C to form dense glass‐ceramics containing RAI 2 B 2 O 7 as the principal phase. Thermal ex…
Cation exchange capacity (CEC) and Al saturation are often determined by extraction of the bases with 1 M NH4OAc, pH 7, and the Al with 1 M KCl. This method was compared to 1 M NH4Cl to extract both bases and Al. The latter method has the advantages of measuring CEC at the soil pH and one‐step extraction. Data sets in…
Gas evolution experiments have been performed on hydrogenated amorphous carbon (a-C:H) films prepared by plasma deposition. Two series of films are studied: in series I, C2H2 is used as a process gas at a fixed bias voltage while the gas pressure is varied, and in series II, CH4 is employed at a fixed gas pressure, an…
Creep of 9.4‐mol%‐Y 2 O 3 ‐stabilized cubic ZrO 2 has been studied between 1300° and 1550°C. Conventional power‐law creep (stress exponent n ∼ 4.5) is found at the higher temperatures, with an activation energy (∼6 eV) corresponding to cation diffusion. Transition to a different creep mechanism occurs at the lower tem…
Crystals of tris (methylammonium) nonaiododibismuthate were grown which turned out to be isomorphous with Cs3Bi2I9 and (CH3NH3)3Sb2I9. Two phase transitions, at 223 (second order) and 142 K (first order), were revealed. The low temperature phase transition is characterized by a strong dielectric anomaly. The pyroelect…
The pharmacokinetics of Gd-DOTA meglumine in humans were evaluated in six healthy male volunteers. The agent was injected intravenously at 0.1 mmol/kg over approximately 2 minutes. Its behavior was found to be similar to that of urographic and angiographic iodinated contrast media with a plasma elimination half-life o…
Two typical lateritic weathering profiles (Jacuba ahd Angiquinho) from the Niquelandia Ni deposits, Brazil, were studied in order to establish the petrological relationship between the supergene Ni products and the parental pyroxenes. Frbm the base to the top of the profiles, pyroxenes are replaced by goethite and kao…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectron pair donors in carbocationic polymerization. 2. Mechanism of living carbocationic polymerizations and the role of in situ and external electron pair donorsG. Kaszas, J. E. Puskas, C. C. Chen, and Joseph P. KennedyCite this: Macromolecules 1990, 23, 17, 3909–3915Publ…
The photochem. of colloidal ZnS was studied under a variety of exptl. conditions. The time dependence of the photocorrosion was examd. by using time-resolved fluorescence, static fluorescence, and electrospectroscopy for chem. anal. (ESCA) techniques. A qual. model for the semiconductor and its electrolyte interface i…
We have investigated with molecular dynamics the transport properties and velocity autocorrelation functions (VAF) for liqud ${\mathrm{SiO}}_{2}$ up to pressures of 20 GPa and at temperatures of 4000 K using 252--1371 particles. A systematic study of the sensitivity of the self-diffusion coefficient to the number of p…