Materials Literature
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The influence on the hysteresis loop and the magnetic Barkhausen emission (MBE) of microstructure within the case of different induction hardened carbon steel shafts has been studied. The hysteresis loop shows a distortion with a sudden reduction in the rate of magnetisation (dB/dH ) before approaching the maximum mag…
This article presents the first detailed account of the discovery that substituted epoxides can initiate the carbocationic polymerization of isobutylene. α-Methylstyrene epoxide (MSE), 2,4,4-trimethyl-pentyl-epoxide-1,2 (TMPO-1), 2,4,4-trimethyl-pentyl-epoxide-2,3 (TMPO-2), and hexaepoxi squalene (HES) initiated isobu…
High-quality piezoelectric (1- x )Pb(In 1/2 Nb 1/2 )O 3 – x PbTiO 3 binary system single crystals near a morphotropic phase boundary were successfully grown by a conventional flux method using PbO–PbF 2 –B 2 O 3 flux. The largest crystal had dimensions of about 20 mm×10 mm×5 mm. The permittivity shows a shoulder at th…
A novel three-dimensional copper(II) compound of the formula [Cu3(btre)5(H2O)2](ClO4)6·H2O (btre = 1,2-bis(1,2,4-triazol-4-yl)ethane) has been synthesized. The structure has been solved at 150 K by single-crystal X-ray analysis. The compound [C30H44Cu3N30O2·6(ClO4)·H2O] crystallizes in the triclinic space group P1bar…
The effectiveness of fugitive interfacial carbon coatings in Nextel™ 720‐based composites was investigated. Dense (>90%) matrix (calcium aluminosilicate, 0° and ±45°) composites and porous matrix (mullite/alumina, eight‐harness satin fabric) composites were fabricated and tensile tested in two control conditions (u…
Abstract Conventional tensile testing applied to high density polyethylene can lead to erroneous impressions of the tensile response of the material due to a local reduction in cross section of the sample. Several workers have developed novel tensile testing techniques to measure the response of a small element as it…
(2000). RECENT ADVANCES IN CLAY-CATALYZED ORGANIC TRANSFORMATIONS. Organic Preparations and Procedures International: Vol. 32, No. 1, pp. 1-40.
We present a joint experimental and theoretical study of x-ray absorption at the O-K and $\mathrm{Ni}{\ensuremath{-}L}_{2,3}$ thresholds of ${\mathrm{Nd}}_{2\ensuremath{-}x}{\mathrm{Sr}}_{x}{\mathrm{NiO}}_{4\ensuremath{-}\ensuremath{\delta}}$ providing an analysis of the distribution of doped holes induced by Sr subst…
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The miscibility, morphology and tensile properties of three blend systems of poly(ε-caprolactone) (PCL) with poly(vinyl chloride) (PVC) and with two chlorinated PVCs (CPVCs) with different chlorine contents (63 wt% and 67 wt% of Cl) have been studied. Based on the shifts of single glass transition temperature, the Gor…
The effect of mixtures of vinyl triphenyl phosphonium bromide containing various anions on the corrosion rate of steel in 0·5M H2 SO4 has been investigated. The inhibition mechanism has been studied by conducting electrochemical polarisation measurements. The inhibitor acts by covering the cathodic area of the metal s…
The adsorption and thermal desorption of Na from thin SiO 2 films have been studied. X-ray photoelectron spectroscopy (XPS), angle-resolved XPS (ARXPS), low energy ion scattering (LEIS), temperature-programmed desorption (TPD), low energy electron diffraction (LEED) and work function measurements have been used to cha…
Halogenosubphthalocyaninatobor, [B(X)spc] (X = F, Cl, Br) bildet sich beim Erwärmen von Phthalodinitril mit Bortrihalogenid in Chinolin (X = F) bzw. dem jeweiligen Halogenbenzol. [B(C6H5)spc] wird aus Phthalodinitril und Tetraphenylborat bzw. Tetraphenylboroxid dargestellt. [B(Br)spc] dient für die Darstellung von [B(…
This note comments on a strain rate pattern found in tensile tests. This strain rate pattern readily suggests that the Cowper-Symonds equation relating the static and dynamic flow stresses with the strain rate is not valid for a broad range of strains unless its coefficients change. A modification of the Cowper-Symond…
Transport properties and magnetic susceptibility have been investigated for single crystals of the magnetic conductor $\ensuremath{\beta}\ensuremath{-}{\mathrm{MnO}}_{2}.$ Resistivity, Hall coefficient, and thermoelectric power reveal the behavior of n-type metal with an anomalously small mobility. The transport prope…
One of the toxic and refractory pollutants formed during the color removal of fertilizer, chemical, and petroleum industrial effluents by chlorine is 2-chlorophenol (2-cp). The objective of this study is to investigate the effect of H2O2 and Fe2+ dosages on the decomposition of 2-cp using a coupled ultrasound/Fe2+/H2O…
The performance of a multi-couple thermoelectric device as a generator is investigated. The general expressions of two important performance parameters, the efficiency and power output, are given. The - K characteristic curves of a thermoelectric generator are presented for some differently constrained conditions, whe…
Abstract With the glazing angle incidence of an X‐ray beam, the surface structure of compression molded isotactic polypropylene film was investigated by X‐ray diffraction. A comparison of the crystallinities between the surface and the bulk was made for films annealed in air at different temperatures and times. The cr…
When present as vapors, certain organic compounds offer inhibition against the corrosion of ferrous and nonferrous materials. The inhibitors include aliphatic, aromatic, cyclohexylamines, aminonitrobenzoates, heteroalkylated lower amines, etc. The mechanism of inhibition offered by these compounds was discussed and an…
Abstract Coprecipitation characteristics of CaCO 3 and CaSO 4 were studied under various operating conditions. The investigations were carried out in temperature‐controlled batch tests. Coprecipitation results were compared with our experimental results of a single salt crystallization. It was found that the induction…