Materials Literature
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Powder X-ray diffraction experiments on the antiferroelectric phase of PbZrO3 were performed between room temperature and 85K. The crystal structure at 100K was also analyzed by the neutron Rietveld method. Temperature dependence of the antiferroelectric superlattice-reflection intensities can be described well by a p…
Despite advances in the new material technology and clothing designs for protecting firefighters, firefighters may still be burned under routine or ordinary fire fighting conditions. Some theories indicate that moisture in the clothing, resulting both internally from firefighters sweating and externally by hose spray…
Hydrogen microprint technique is a simple and powerful method to visualize hydrogen behavior in metallic materials by using redox reaction between hydrogen and silver bromide. Polished surface of specimens is covered with nuclear emulsion, and silver particles left on the surface after fixing represent sites of hydrog…
The anhysteretic magnetization M/sub an/ depends on the internal field after degaussing H/sub an/ and, possibly, on the demagnetization factor N. Neel's theory of the N dependence is criticized. Classes of Preisach models are identified for which M/sub an/ (H/sub an/) does not depend on N. A numerical method is presen…
The title compound 2 is obtained as bright yellow metastable crystals, which on mechanical grinding change to the dark red stable form; unlike piezochromic compounds, the reverse colour change does not occur; X-ray crystallographic analyses shows that the yellow form has a folded structure while the red form has a twi…
Substantially reduced NOx emissions are obtained in the low temperature catalytic combustion of NH3-bearing simulated biogas by use of a novel 1%Pt/20%CuO/Al2O3-trapping catalyst and cyclic operation between fuel lean and rich conditions.
Potentiostatic slow strain rate tests (SSRT) were performed to investigate the susceptibility to intergranular stress corrosion cracking (IGSCC) of type 304L (UNS S30403) stainless steel (SS) in 288°C water, focusing on corrosion potential and the degree of sensitization. The degree of sensitization was examined by me…
A new type of waste gasification and smelting system, which uses iron-making and steel-making technologies, has been developed. It is a coke-free process and can produce dioxin-free and high-calorie purified gas and high-quality slag. This report describes the results of a basic concept function test by a bench furnac…
The one-pot synthesis and characterization of a series of silicate–siloxane composites derived from vermiculite by reaction with hydroxy-terminated poly(dimethylsiloxane)s is described. Cone calorimetry has been used to obtain heat release rate measurements. The results show that even at the highest irradiance levels…
A new water-insoluble polymer solid photosensitizer, prepared from an aluminium(III) tetracaboxyphthalocyanine and poly(styrene-co-chloromethylstyrene), has a photosensitizing ability for the photo-oxidation of phenol with singlet oxygen.
The present report deals with the one electron oxidation and the one- and two-electron reduction of [Mn(tmtaa)L], [L = THF, 1a; L = none, 1b; tmtaa = dibenzotetramethyltetraaza[14]annulene]. The former class of reactions led to the formation of a variety of functionalised Mn(III) species, [(tmtaa)Mn–X] [X = I, 2; X =…
The partial discharge (PD) measurements on power transformers are studied with a view toward discrimination and classification of different discharge sources. For this purpose digital analysis is applied to power transformers and reactors going through acceptance testing. Furthermore, based on these measurements, PD d…
The effects of a post‐weld heat treatment on the fracture toughness and fatigue crack growth behaviour of electron beam welds of an α + β titanium alloy, Ti–6.5Al–1.9Zr–0.25Si have been studied. Welds in the stress‐relieved condition exhibited poor fracture toughness due to poor energy absorbing capacity of the thin α…
A study is reported, dealing with the microstructure and thermal behavior of the homopolymers of 1,1,1,3,3,3-hexafluoroisopropyl methacrylate (HFIM) and 1,1,1,3,3,3-hexafluoroisopropyl α-fluoroacrylate (HFIFA), as well as of their copolymers with various vinyl ethers. The aim of this work was a better understanding of…
Electrochromic WO3 was prepared on highly oriented pyrolytic graphite (HOPG) by electrodeposition under constant current in an alcohol-containing solution. The morphology and the early stage growth mechanism of electrodeposited WO3 were studied by tapping mode atomic force microscopy (TMAFM). The series of AFM images…
The microstructure and tensile properties of a rolled specimen of Mg-5.5 mass%Zn-0.6 mass%Zr alloy are investigated. A relatively small grain size of 15.9 μm was obtained in the rolled specimen. The rolled magnesium alloy exhibited higher strength than the annealed specimen at room temperature, while the elongation wa…
Abstract The standard solvent casting method for preparing particle/polymer composites is reviewed. Unless extraordinary conditions are used, the standard process is restricted to thin films because of difficulties (blistering) that occur during the solvent removal. These thin films have better dispersion and less clu…
A knowledge of the relation between hydrogen in the corrosion film and hydrogen pickup by the metal is important for understanding the hydriding behavior of zirconium alloys. The results obtained from isotope (deuterium, lithium, and boron) incorporation and exchange studies on oxides grown out- and in-reactor on Zr-2…
Aluminum oxide thin films were deposited on PET substrate film using r.f. magnetron sputtering with an aluminum oxides magnetron target and argon plasma. The electronic structures of the resulting aluminum oxides were then examined using XPS. The XPS spectrum for the aluminum oxides showed the presence of a well-resol…
Comparing the adsorption properties and dissociation on a Pt(111) iththat ona Fe(111) surface, we have con-sidered seven coordination modes of the adsorbed binding site: $di-\mu\pi/\mu$, 1-fbld,2-fold, and 3-fbld sites. On the Pt(111) surface, t he adsorbed binding site of carbon dioxide was strongestat the1-fold site…