Materials Literature
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The XPS spectrum of the boron suboxide, B6O, is reported. The spectra were obtained on a powder sample that was prepared and characterized at the Diamond Technology Center, Norton Company. It was characterized with x-ray diffraction and was prepared by established methods. The B 1s peak is split into two components of…
Plutonium recycling in light water reactors (LWRs) has progressively become a fact. Over 200 t of mixedoxide (MOX) fuel have been produced in the COGEMA and BELGONUCLÉAIRE plants in the last 7 yr. Fuel loaded in European reactors—mainly MIMAS fuel—is presenting satisfactory in-core behavior and performance.Fuel fabric…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and Characterization of Porphyrin-Sugar Carbon ConjugatesGiovanni Casiraghi, Mara Cornia, Franca Zanardi, Gloria Rassu, Enzio Ragg, and Rita BortoliniCite this: J. Org. Chem. 1994, 59, 7, 1801–1808Publication Date (Print):April 1, 1994Publication History Published…
In this study, the surface composition of a fresh, commercial, alumina Claus catalyst (Alcoa S-100) was examined by x-ray photoelectron spectroscopy (XPS). This article presents the main XPS core lines and the valence band spectra obtained for the Claus catalyst. The electronic record includes the Al 2p, Al 2s, O 1s,…
XPS data have been obtained from a pressed AgO powder sample obtained from AESAR. Obtaining high-quality XPS data from a single oxide state is difficult because multiple oxide states, hydroxides, and other contaminants are usually present. The AgO sample was annealed in vacuum at 100°C for 30 min to reduce the amounts…
A detailed time domain model for the eddy current losses in the windings of a transformer is presented. The basic elements for the derivation of the model are the turns which may be combined into sections. The model is expressed as an R-matrix. Its diagonal elements were fitted using a series Foster circuit while for…
A new electrochemical method was developed to investigate crevice corrosion and its inhibitors. A wire beam electrode was used to allow electrochemical parameters to be measured directly from the crevice area. As an example, oil stain was investigated using this method.
Abstract This paper reports on the fabrication of high‐eficiency back‐side contact silicon solar cells in large volume for the '93 World Solar Challenge. the cells were used exclusively on the winning car, the Dream, made by Honda R&D Company, Ltd. the cell efficiencies were between 20% and 22% (AMI.5G, 25°C) (G =…
AssrRAcr A single-crystal X-ray diffraction study of lithiophorite [(Al,Li)MnO,(OH)r] revealed that the structure is trigonal (R3m), not monoclinic as previously reported, and yielded unit-cell parameters a: 2.9247(4), c:28.169(6) A. fne study confirmed that the structure consists of alternately stacked layers of Mn-O…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolid-State Synthesis and Characterization of Silver Vanadium Oxide for Use as a Cathode Material for Lithium BatteriesRandolph A. Leising and Esther Sans TakeuchiCite this: Chem. Mater. 1994, 6, 4, 489–495Publication Date (Print):April 1, 1994Publication History Published o…
Neutron powder diffraction has been used to measure the temperature factors of both the cation and the anion atoms in 10mol% Y2O3–ZrO2 over the temperature range 15 to 1323 K. The Housley–Hess approach has been used to determine the static disorder term of the temperature factors for both the Zr/Y and O atoms. The sta…
Thin‐film nonstoichiometric nickel oxide is an interesting intercalation electrode with unique electrochemical and optical properties which can be successfully used for improved electrochromic displays and windows of relevant technological interest. However, the correlation between the intercalation process of lithium…
Abstract A change in color and density during prolonged heating of a formulation containing ε‐hexanitrohexaazaisowurtzitane (HNIW) and Estane 5702 was investigated by Fourier transform infrared (FTIR) spectroscopic analysis. Starting materials, virgin and final colored formulation were studied. Analysis revealed polym…
The XPS spectra of materials containing both magnesium and aluminum can exhibit a number of spectral artifacts when using a Mg Kα x-ray source. These artifacts are easily observed in XPS spectra of magnesium aluminate (MgAl2O4, also known as magnesium aluminum oxide), which are presented in this article. For example,…
Abstract The dynamics of R‐11 blown polyurethane foam formation depend on the rates of viscosity increase of the reacting mixture and R‐11 evaporation, and both are controlled by the polymerization process. Detailed experiments were carried out to study the dynamics of foaming and the measurements made included the cr…
An electromigration failure model which can be used to project the electromigration lifetime under pulsed DC and AC current stressing has been reported. The experimental results indicate that different metallization systems (Al-2%Si, Al4%Cu/TiW, and Cu) show similar failure behaviors, which can be explained and predic…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffects of Calcium and Magnesium Ions on Aggregation of Whey Protein Isolate and Its Effect on Foaming PropertiesHaiming Zhu and Srinivasan DamodaranCite this: J. Agric. Food Chem. 1994, 42, 4, 856–862Publication Date (Print):April 1, 1994Publication History Published online…
BaTiO 3 single crystals were prepared by solid‐state grain growth. The single crystals were obtained by seeding a poly‐crystalline, TiO 2 ‐excess BaTiO 3 , which exhibited abnormal grain growth. The condition for single‐crystal growth was essentially dependent on the grain growth behavior of the polycrystalline, sinte…
Attempts to prepare hydrogen-bond-directed nonlinear optical materials from a 1:1 molar mixture Of D-(+)-dibenzoyltartaric acid (DBT, I) and 4-aminopyridine (4-AP, II) resulted in two salts of different stoichiometry. One of them crystallizes in an unusual 1.5:1 (acid:base) monohydrate salt form III while the other on…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChain Reorientation in Poly(tetrafluoroethylene) by Mobile Twin-Helix Reversal DefectsM. Kimmig, G. Strobl, and B. StuehnCite this: Macromolecules 1994, 27, 9, 2481–2495Publication Date (Print):April 1, 1994Publication History Published online1 May 2002Published inissue 1 Ap…