Materials Literature
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This paper presents the results of extensive laboratory tests and experience in industrial applications to explain the effects of iron on the corrosion resistance of titanium. In the great majority of cases where titanium is being used in corrosive environments, the effect of iron at the levels normally found in unall…
Porcine tracheal and bronchial explant cultures exposed to log-phase cultures of Bordetella, Candida, Corynebacterium, Haemophilus, Klebsiella, Mycoplasma, Pasteurella, Proteus, Saccharomyces, Staphylococcus and Streptococcus were examined for surface sequential changes by scanning electron and light microscopy. Infec…
The preparation and properties of some (methylhydroxyphenyl)tellurium(IV) halides, RnTex4-n, (where R = CH3C6H3OH, X = Cl, Br, I, and n = 1,2,3), are reported. Cryoscopic measurements, in general, are consistent with conductivity measurements and reflect the molecular nature of RTeCl3 and R2TeX2, and the ionic nature…
N,N',N"-Triethyl phosphoratriamide and ethyl,N,N'diethyl phosphoradiamidate are not able to phosphorylate cellulose even at 160°C. The increased efficacy of these reagents as flame retardants for cotton has been proposed due to the formation of intermediates containing -P=N grouping by loss of an amine molecule from t…
2,2′-Bi-(1,4,8,11-tetra-azacyclotetradecane) has been isolated as a minor product from the nickel (II)-assisted synthesis of 1,4,8,11-tetra-azacyclotetradecane (cyclam) and its structure confirmed by X-ray structural analysis of the dinuclear complex [Ni2(C20H46N8)][ClO4]4.
Abstract Nickel(II), copper(II), and cobalt(III) complexes were prepared with corroles; 2,3,7,8,12,13,17,18-octaethylcorrole (OEC), 2,3,17,18-tetramethyl-7,8,12,13-tetraethylcorrole (MEC), and 8,12-bis[2-(ethoxycarbonyl)ethyl]2,3,7,13,17,18-hexamethylcorrole (PMC). For the coordination with nickel and copper ions, the…
Les fonctions diélectriques ordinaires et extraordinaires du nitrure de bore hexagonal ont été calculées à partir de mesures multi-angle du pouvoir réflecteur pour une énergie de rayonnement de 5 eV à 30 eV. Les spectres obtenus sont discutés en termes de transitions interbandes.
The isolation of some new three- and four-co-ordinate gold(I) complexes is reported. 197Au Mössbauer data are given for two-, three-, and four-co-ordinate complexes, and the technique is shown to be well suited to the determination of co-ordination numbers. For the two- and three-co-ordinate systems the point-charge (…
Description Covers the practical application of titanium and zirconium-materials highly resistant to corrosion and with few design limitations.
Abstract Raman scattering measurements are made in the tetragonal phase of KNbO 3 . The results are in good agreement with the previous corresponding neutron data, and can be assigned to symmetry species. Comparison of these results to those available in the other phases enables to observe the effect of the phase tran…
Recent studies have established that subsurface material structures are altered in processes giving rise to wear. This is the case both for sliding contact and repetitive compound impact loading. It is not surprising that the thermal and mechanical processing due to solid contact and relative motion lead to localized…
Abstract The rheological behavior of an uncrosslinked polybutadiene on sudden application of finite strain was examined. The shear stress σ, two components of birefringence, and the extinction angle were measured in shear (magnitude of shear γ ≤ 3.5) and tensile stress and the birefringence were measured in uniaxial e…
Conference International Symposium on Polyvinylchloride, Third, Cleveland, Ohio, USA, 1980-08-10–1980-08-15 Published Online: 2009-01-01 Published in Print: 1981-01-01 © 2013 Walter de Gruyter GmbH, Berlin/Boston
Abstract Hydrogen is sorbed by “amorphous” molybdenum sulphide at two sites. One site becomes saturated at pressures less than 1 atmosphere and at temperatures less than 423 K. This is the site at which linear S‐H bonds form. The second site is occupied at higher temperatures, and the preliminary data suggests saturat…
The pseudo-binary systems BaB2O4-Na2O and BaB2O4-Na2B2O4 in the ternary system BaO-Na2O-B2O3 have been studied by means of thermal analysis and X-ray diffraction. The system BaB2O4-Na2B2O4 is a eutectic one and it's eutectic reaction occurs at 826 ±3℃. A new compound BaB2O4·Na2O which melts congruently at 846 ± 3℃ has…
We discuss here some of the basic issues involved in the development of an optical storage medium based on the laser micromachining of thin tellurium films. Results are presented in the areas of recording sensitivity, materials resolution, error statistics, and archival stability. It is shown that a medium using 20–30…
Abstract The effect of 2,2′‐oxydiethanol (diethylene glycol, DEG) content (ranging from 2 to 15 mol‐%) on unit cell dimensions, density, melting point, and small angle X‐ray scattering (SAXS) of undrawn and drawn annealed (in the range from 80 to 260°C) poly(ethylene terephthalate), (PET), is studied. It is establishe…
We describe the first example of reentrant ND nematic and D r columnar mesophases at atmospheric pressure in a pure disc-like compound.
The addition of 1,10-phenanthroline, o-phenylenebis(dimethylarsine), or triphenylstibine to pentafluorophenyl-(tetrahydrothiophen) gold(I) leads respectively to [Au(C6F5)(phen)], [Au(pdma)2][Au(C6F5)2], and [Au(SbPh3)4][Au(C6F5)2], the pdma derivative being the first four-co-ordinate gold(I) complex whose structure ha…
The secondary electron emission coefficients, γ, for in-situ vacuum-deposited targets of Al, Cu, Ag and Au are measured under proton bombardment in the energy range 4–12 MeV at a pressure of 1–2×10 -8 Torr. The values of γ for Al are only half of those obtained experimentally by Aarset et al. The ratios between γ and…