Materials Literature
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<div class="htmlview paragraph">Major plastics material utilisation in motor vehicle applications has been concentrated in relatively non-critical performance areas. These areas particularly interior trim parts are now almost saturated offering scope only for interplastic substitution.</div> <div class=…
The authors determine the self-inductance of a non-ferromagnetic metallic ring (of order 10 -8 H) to an accuracy of about 10%. The method is based on measuring the phase difference between induced EMF and induced current in the ring when the ring is exposed to an alternating magnetic flux. Both the theory and measurem…
Abstract AUSTEMPERED DUCTILE IRON has high strength with excellent toughness and ductility. Its strength is twice that of conventional ductile irons, comparable to heat-treated wrought steels. Composition is balanced to provide foundry compatibility, minimal segregation and good response to austempering. This datashee…
Hexagonal arrays of secondary grain-boundary dislocations have been observed in several near-Σ3 coherent twin boundaries in polycrystalline specimens of a f.c.c. Cu + 6 at.% Si alloy. The Burgers vectors of the dislocations in the networks have been determined and the steps associated with them are discussed.
A kinetic model of fuel/cladding chemical interaction (FCCI) has been developed. By fitting the model to in-pile experimental data, a wastage correlation has been derived that predicts corrosion depth due to FCCI. The model can explain the temperature dependency of the corrosion depth observed in the in-pile experimen…
Abstract The Raman spectra of the superionic conductors K 1.6 Mg 0.8 Ti 7.2 O 16 , Cs 1.2 Mg 0.6 Ti 7.4 O 1.6 , and (KTI) 1.6 Mg 0.8 Ti 7.2 O 16 are measured in the frequency range from 5 to 1000 cm −1 . In the range from 100 to 1000 cm −1 Raman spectra hardly show alkali ion dependence. On the contrary, in the freque…
Abstract Halogenfunktionelle Siloxane [(Me 3 C) 2 SiCl – OSiHalR 2 , Hal = F, R = CMe 3 ( 2 ), Hal = Cl, R = Ph ( 3 )] werden durch Reaktion der Dihalogensilane mit (Me 3 C) 2 Si(Cl)OLi ( 1a ) erhalten. Mit Ammoniak reagiert (Me 3 C) 2 Si(Cl)OH ( 1 ) glatt unter Bildung des Aminosilanols (Me 3 C) 2 Si(NH 2 )OH ( 4 ),…
The relationship between iodine concentration, osmolality, and toxicity for nine different contrast media was studied. High osmolal conventional ionic contrast media (Na-metrizoate, Na-iothalamate, meglumine/Na-diatrizoate, meglumine-calcium-metrizoate) and the new low osmolal nonionic (Metrizamide, iopamidol, iohexol…
An analog of Fano's theorem for ionization in cavities is shown to hold for the stepwise representation of electron paths used in Monte Carlo computer models of electron transport. This brings to light an error in the distribution of electron paths and hence energy deposition which is induced by interrupting steps whi…
The existence of phase transition in BaSm 2 Mn 2 O 7 was revealed by high temperature X-ray diffractometry to be near 520 K. The phase transition is largely affected by the oxygen nonstoichiometry of this compound. For stoichiometric composition this phase has an orthorhombic distortion due to Jahn-Teller effect of Mn…
The objectives of this paper are: 1. to up-date the manual search system and index book described in 1936 and 1938; 2. to introduce a “work form” which serves to guide the analyst through the procedural steps involved in using the manual search index book and 3. to review briefly the literature on manual search/match…
The air-jet texturing process is briefly introduced and its advantages over other texturing processes are summarized. Characteristics of air-jet textured yarns are stated with special reference to the stability of the yarns. Test methods used in industry and research to determine the "stability" or "instability" of ai…
Dry oxidation of spent ion exchange resin is one of the most effective methods to reduce radioactive waste volume and also to make the final waste form more stable. Thermo-gravimetric measurements were performed using cation exchange resins with or without Fe in either an ionized or unionized form to clarify the effec…
Presently the only valid species of Pseudohimantidium is P. pacificum, described by Hustedt & Krasske, from the northern marine Chilean water masses. Frustule morphology and its variability were studied by means of light and electron microscopy, both transmission and scanning. Among the least stable characteristics th…
Abstract Adhesion loss caused by salt corrosion is proposed to occur by the following process: 1) During a salt corrosion test, the NaCl solution rises in the cavity located at the steel-cord center. 2) An electrochemical oxygen concentration cell is formed. 3) OH − is produced by the reduction of oxygen. 4) An increa…
The general and localized corrosion performance of AISI 303 stainless steel (SS) has been investigated. The material was either in its conventional form or produced from rapidly solidified powder. The rapidly solidified alloy exhibited markedly improved general corrosion resistance compared to the conventional alloy o…
The electron attachment rate constants of SO2 and CS2 in the buffer gases of Ar, N2, and CH4 (150 to 530 Torr) at various E/N (1–16 Td) were measured by a parallel-plate drift-tube electron-swarm technique. The electrons were produced by irradiating the cathode with KrF laser photons. For the SO2–Ar mixture, the elect…
Kinetics and mechanism of formation of urethane, biuret, allo-phanate, and isocyanurate in the synthesis of polyurethanes were studied by means of 13C-NMR and GPC. In the spectra, the regions of urethane, allophanate, biuret, and isocyanurate were used to study the mechanism of reaction between isocyanates and glycols…
The effect of the addition of a buffer to an ethylenediaminetetracetic acid (EDTA) litholytic solution on the solubility of calcium oxalate monohydrate and hydroxyapatite is investigated. The experiments show that the addition of triethanolamine as a buffer to EDTA solutions at pH 8 and 8.5 enhances the solubility of…
The London-limit penetration depth, ${\ensuremath{\lambda}}_{L}$(T), has now been calculated as a function of temperature, T, for ${\mathrm{V}}_{3}$Si using two recent tunneling-derived spectra of the electron-phonon interaction. Significantly different predictions for ${\ensuremath{\lambda}}_{L}$(T)/${\ensuremath{\la…