Radiation defect formation in lithium tetraborate (LTB) single crystals
The mechanism and nature of radiation defects creating with electron and neutron irradiation in LTB crystals are discussed.
Materials Literature
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Formation of the Tributyltin-Iron(III) Porphyrin Complex by a Free Radical Process
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFormation of the Tributyltin-Iron(III) Porphyrin Complex by a Free Radical ProcessByungho Song and Harold M. GoffCite this: Inorg. Chem. 1994, 33, 26, 5979–5980Publication Date (Print):December 1, 1994Publication History Published online1 May 2002Published inissue 1 December…
Differences in Corrosion Behavior of Ferritic and Austenitic Stainless Steels
Effects of chromium (Cr) and molybdenum (Mo) on differences in corrosion behavior of ferritic and austenitic stainless steels (SS) were investigated to clarify the reason for the superior corrosion resistance of high-alloy ferritic SS to austenitic SS. In the region where the corrosion index (Cr + 3xMo [mass%]) exceed…
High Quality Fabrics for Garments
Abstract Explains the origins of the development of the handle method, and lists the three criteria for predicting fabric quality. Shows how fabric handle evaluation is used, for example, handle analysis expresses characteristics and quality. Goes on to explain hand value and total hand value with the aid of equations…
Synthesis and X-ray Crystal Structure of a Novel Iron Nitrosyl Complex, Fe(NO)2PPh3(.eta.2-TCNE)
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and X-ray Crystal Structure of a Novel Iron Nitrosyl Complex, Fe(NO)2PPh3(.eta.2-TCNE)Lijuan Li, Gary D. Enright, and Keith F. PrestonCite this: Organometallics 1994, 13, 12, 4686–4688Publication Date (Print):December 1, 1994Publication History Published online1 Ma…
SYNTHESIS AND STRUCTURE OF DINUCLEAR COMPLEXES OF TERBIUM(III) WITH 4-ACETALBISPYRAZOLONE
Two novel dinuclear complexes of terbium(III) with 1,5-bis(1′-phenyl-3′-methyl-5′-pyrazolone-4′)-1,5-pentanedione (H2L), Tb2L3·6H2), Tb2L3·SDMF, have been synthesized. The crystal structure of Tb2L3 · 5DMF was determined by X-ray diffraction methods. Crystals are triclinic, space group P 1 with α = 16.957(5), b = 17.8…
A high-pressure study of thallium
High-pressure experiments on metallic thallium have been carried out using a diamond-anvil cell for pressures up to 32 GPa. A hexagonal close packed → face-centred cubic (f.c.c.) phase change takes place around 4 GPa. Fitting of the experimental data to the Murnaghan and Birch equations of state has been used to obtai…
The effect of silicon on the microstructure and segregation of directionally solidified IN738 superalloy
Th e effect of silicon on the microstructure and solidification segregation of directionally solidified IN738 nickel-based superalloy was studied. Directional solidification at various solidification rates and partial directional solidification plus rapid quenching were applied. Metallographican alysis and an electron…
Corrosion Kinetics of Silicon Nitride in Dry Air Containing Sodium Nitrate Vapors
The gaseous alkali corrosion kinetics of Si 3 N 4 were systematically investigated from 950° to 1100°C in dry air containing 0.98 vol% sodium nitrate vapors. The linear reaction rates observed at all temperatures indicate that the alkali corrosion of Si 3 N 4 is interface‐controlled with an activation energy of 199 kJ…
Structure and Physical Properties of (EP-TTP)2Au(CN)2
Abstract The title organic charge transfer salt, where EP-TTP is 2-(4,5-ethylenedithio-1,3-dithiol-2-ylidene)-5(4,5-trimethylenedithio-1,3-dithiol-2-ylidene)-1,3,4,6-tetrathiapentalene, has so-called β-type donor arrangement, but the Fermi surface is basically one-dimensional. This salt exhibits metallic conductivity…
Probing semiconductor interfaces using nonlinear optical spectroscopy
The nonlinear optical response of semiconductor interfaces using three-wave mixing experiments in general, and second harmonic generation (SHG) in particular, has been widely studied, but it is only recently, with the advent of commercial tunable pulsed laser sources, that the spectroscopic aspect of SHG can be more r…
Predicting End Breakage Rates in Worsted Spinning
Existing models for predicting end breakage rates in spinning give unrealistic values when considering the effects of changes in count or speed on the worsted ring frame. A new approach to predicting end breaks gives results that are closer to experience values. The most important factor in determining end breaks is y…
Miscibility of Polyamide Blends. 2. Thermal Study of Poly(hexamethylene isophthalamide)/Nylon-n,m Blends
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMiscibility of Polyamide Blends. 2. Thermal Study of Poly(hexamethylene isophthalamide)/Nylon-n,m BlendsPierre Cote and Josee BrissonCite this: Macromolecules 1994, 27, 25, 7329–7338Publication Date (Print):December 1, 1994Publication History Published online1 May 2002Publis…
Cooperative self‐assembling in statistical copolymers: a new approach to high‐temperature thermoplastic elastomers
Abstract Based on previous work, where it was shown that 4‐urazoylbenzoic acid (U4A) groups, which are attached statistically to polybutadiene, form ordered supramolecular arrays in the unpolar polymer matrix, the present work describes the synthesis of a new molecular building block capable of self‐assembling in the…
Quantitative Relationship between Carbonated Apatite Metastable Equilibrium Solubility and Dissolution Kinetics
The purpose of this study was to compare the experimental dissolution rates of carbonated apatite (CAP) pellets in acidic acetate buffers under a variety of conditions with theoretical predictions. The theoretical predictions were made in the following way. Recently obtained data on metastable equilibrium solubility (…
Mikasaite, (Fe3+, Al)2(SO4)3, a new ferric sulphate mineral from Mikasa city, Hokkaido, Japan
Abstract The new ferric sulphate mineral, mikasaite, the Fe analogue of millosevichite was found in Ikushunbe tsu, Mikasa city, Hokkaido, Japan. Mikasaite occurs as a sublimate around fractures from which coal gas escapes. The white-light brown coloured mineral shows aggregates of fine porous crystals. The SEM microgr…
X-ray topographic and optical imaging studies of synthetic diamonds
Large synthetic diamonds grown by the reconstitution method, all exhibiting the growth forms {100}, {111}, {110} and {113}, were studied. Crystal perfection was assessed by X-ray topography using a conventional source of Cu Kα1 radiation and employing the section, projection and limited-projection topographic techniqu…
Microstructure and Crystallinity of N-Type Porous Silicon
Microstructure and crystallinity of a porous silicon (PS) layer formed on a highly doped n-type silicon substrate were examined in detail, and the luminescent nature of the PS layer was also studied qualitatively. A layered pore structure developed after about 3000 s of anodization, and pore morphology became simpler…
Statistical mechanical theory for liquid‐crystalline polymer solutions
Abstract A statistical mechanical theory is presented for liquid‐crystalline polymer solutions, where the liquid‐crystalline polymer is regarded as a wormlike spherocylinder interacting by the hard‐core repulsion and a soft (attractive or electrostatic) interaction with other spherocylinders. The theory is based on th…
Microstructure and Fracture Toughness of Hot‐Pressed Silicon Carbide Reinforced with Silicon Carbide Whisker
The effects of β‐SiC whisker addition on the microstructural evolution and fracture toughness ( K IC ) of hot‐pressed SiC were investigated. Most of the whiskers added disappeared during the densifcation process by transformation into the α‐phase. The remaining whiskers acted as nuclei for grain growth, resulting in t…