Electrochemical Corrosion Testing
Description Describes the most recent, useful procedures for determining the mechanisms of various corrosion phenomena, evaluating the corrosion susceptibility of various materials, and measuring rates of corrosion.
Materials Literature
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Catalytic decomposition of nitric oxide over copper(II)-exchanged, Y-type zeolites
The catalytic decomposition of NO has been investigated over copper(II)-exchanged Y-type zeolites (CuNaY) at 573–823 K in a flow reactor. CuNaY exhibited an appreciable activity above 723 K and was not poisoned by either oxygen or water vapour. In the presence of the CuNaY catalyst (69% exchanged) using a contact time…
Local and normal vibrational states: a harmonically coupled anharmonic-oscillator model
Analysis of previous calculations indicates that the observations of an irregular overtone/combination spectrum implies increasingly close local-mode near-degeneracies in the higher overtone states. This behaviour is accurately reproduced by a model of two harmonically coupled anharmonic oscillators, when the anharmon…
Photochromic heterocyclic fulgides. Part 3. The use of (E)-α-(2,5-dimethyl-3-furylethylidene)(isopropylidene)succinic anhydride as a simple convenient chemical actinometer
The thermally stable photochemically fatigue resistant title compound and its coloured form provide a photochromic system well suited for chemical actinometry in the near-u.v. and visible spectral regions. A solution of the photochromic compound in many common organic solvents can be used repeatedly and, provided the…
Crystallographic study of the distribution of chromium cations in X and Y zeolites
The crystal structures of four CrY zeolites and one CrX zeolite containing 1,2 wt% chromium have been determined by powder X-ray crystallography. The results demonstrate that the Cr3+ cations occupy preferentially the site I' of these samples after dehydration. The cations at this site are three-coordinate.The framewo…
Microstructural changes around non-metallic inclusions caused by rolling-contact fatigue of ball-bearing steels
Microstructural changes around non-metallic inclusions (sometimes called ‘butterflies') were studied using both optical and transmission electron microscopy. Large numbers of cyclic stresses cause the parent tempered martensite to disappear, along with the spherical cementite particles generally found in these through…
Conducting Polymers: A Review of Recent Work
The conductivities of all the currently reported conducting polymers are compared to those of the classical metals. The requirements for a technologically useful conducting polymer are considered and the degree to which existing conducting polymers meet these requirements is evaluated. The mechanism of doping is discu…
Fatigue of Fibrous Composite Materials
Description An ASTM book on the understanding of fatigue mechanisms that cover a wide range of topics from theory and experimental studies to prediction models, test methods, and review of classic procedures.
Experimental survey of the strain energy density function of isoprene rubber vulcanizate
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTExperimental survey of the strain energy density function of isoprene rubber vulcanizateS. Kawabata, M. Matsuda, K. Tei, and H. KawaiCite this: Macromolecules 1981, 14, 1, 154–162Publication Date (Print):January 1, 1981Publication History Published online1 May 2002Published…
Polymers in solutions : principles and applications of a direct renormalization method
The configurational properties of long polymers in solution can be conveniently studied by using a direct renormalization method, recently introduced by the author. This method is described here in detail and applied to the two parameter model. The indices γ, ν and ω are calculated directly to second order in ε = 4 -…
Heat capacity and other thermodynamic properties of linear macromolecules. II. Polyethylene
The heat capacity of polyethylene from 0 K to 600 K is reviewed using measurements on 46 samples reported in the literature. The crystallinity dependence is evaluated critically and a set of recommended data for completely crystalline and amorphous polyethylene is derived. Entropy, enthalpy, and Gibbs energy functions…
Effects of Radiation on Materials
Description Extensive information on current research results dealing with the effects of radiation on light-water-reactor pressure vessels, fast breeder reactor core materials, material for first-walls in fusion systems, and solid radioactive waste.
Secondary Electron Emission
When the surface of a solid is bombarded with charged particles of sufficient kinetic energy, emission of electrons by the solid may be observed. This phenomenon of secondary electron emission was discovered by Austin and Starke in 1902 in a study of the reflection of electrons by metals; they observed that under cert…
A solid silaethene: isolation and characterization
The first reported solid silaethene, m.p. 95 °C, stable at room temperature under argon, but highly reactive in air has been isolated and characterized by i.r., n.m.r. and mass spectrometry.
Fast Breeder Reactors
This book describes the major design features of fast breeder reactors and the methods used for their design and analysis. The foremost objective of this book is to fulfill the need for a textbook on Fast Breeder Reactor (FBR) technology at the graduate level or the advanced undergraduate level. It is assumed that the…
Synthesis and X-ray structural characterization of the centred icosahedral gold cluster compound [Aul3(PMe2Ph)10Cl2](PF6)3; the realization of a theoretical prediction
The gold(I) complexes AuCl(PR3)(PR3= PPh3, PMePh2, and PMe2Ph) react with Ti(η-C7H8)2 to form a variety of cationic gold cluster complexes; single-crystal X-ray analysis of one of these, [Au13-(PMe2Ph)10Cl2](PF6)3, has confirmed a centred icosahedral geometry for the cluster, in agreement with an earlier theoretical p…
Agglomerate and Particle Size Effects on Sintering Yttria‐Stabilized Zirconia
The initial‐, intermediate‐, and final‐stage sintering of fine crystallite yttria‐stabilized zirconia was studied. Experiments were conducted on powder lots of differing agglomerate size and one specially prepared agglomerate‐free powder. Initial‐stage sintering kinetics were compared with a sintering study on larger…
Water structure and changes in thermal stability of the system poly(ethylene oxide)–water
The phase behaviour of aqueous solutions of poly(ethylene oxide), PEO, is analysed by means of a structural model of the system and a simple statistical-mechanical model based thereupon. The intention is to elucidate the structural questions involved in the water–PEO coupling and to gain some insight in possible conse…
Fluorimetry study of N-(1-pyrenyl)iodoacetamide-labelled F-actin. Local structural change of actin protomer both on polymerization and on binding of heavy meromyosin.
A fluorescent reagent, N-(1-pyrenyl)iodoacetamide, was conjugated to rabbit skeletal muscle actin at the site of the most reactive sulfhydryl group, and fluorescence characteristics (excitation and emission spectra, quantum yields, lifetimes) of the conjugate were investigated. Associated with polymerization of labell…
Normal mode determination in crystals
Abstract The group theoretical methods by which the symmetries of normal modes in crystals may be determined are outlined, and a series of tables are presented to facilitate rapid determination of the selection rules for vibrational transitions. Emphasis is placed on the method of nuclear site group analysis in which…