Materials Literature
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A new conceptual blanket design for a fusion reactor produces fissile material for fission power plants. Fission is suppressed by using beryllium, rather than uranium, to multiply neutrons and also by minimizing the fissile inventory. The molten-salt breeding media (LiF+BeF2+ThF4) is circulated through the blanket and…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCarbon monoxide and nitrogen oxide (NO) adsorption on nickel oxide (NiO): a spectroscopic investigationE. Escalona Platero, S. Coluccia, and A. ZecchinaCite this: Langmuir 1985, 1, 4, 407–414Publication Date (Print):July 1, 1985Publication History Published online1 May 2002P…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFlow properties of foam with and without solid particlesNandu N. Thondavadi and Robert LemlichCite this: Ind. Eng. Chem. Process Des. Dev. 1985, 24, 3, 748–753Publication Date (Print):July 1, 1985Publication History Published online1 May 2002Published inissue 1 July 1985http…
A one-volume reference of techniques used by the metallurgical microscopist. Contains an introduction to the instrumentation and methods of scanning electron microscopy with historical as well as state-of-the-art methodologies. Theory and practice are combined so that the reader can easily understand and duplicate the…
Abstract An interpretation of the Raman and infrared phonon spectra in Bi 12 GeO 20 and Bi 12 SiO 20 crystals is proposed. Some quasi‐molecular units are distinguished due to the presence of heavy bismuth atoms in the crystal lattice. The frequencies of motion and the force constants of the tetrahedral GeO 4 and SiO 4…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudies on carbonylating organoiron alkyl complexes (.eta.-C5H5)(CO)(L)FeRT. C. Forschner and A. R. CutlerCite this: Organometallics 1985, 4, 7, 1247–1257Publication Date (Print):July 1, 1985Publication History Published online1 May 2002Published inissue 1 July 1985https://p…
The domain structure immediately after heat treatment was investigated by the nematic liquid crystal method. Just below T c very fine domain patterns narrower than 0.5 µm in width were observed. With time, the domain pattern gradually becomes coarse. Mean domain width grows in proportion to the time elapsed since the…
An experimental study has been made of the manner in which microfractures initiate and grow along adiabatic shear bands formed in the titanium alloy Ti–6AI–4V by the normal impact of hard steel spheres at velocities up to 340 m s−1. It is suggested that a critical shear strain must be exceeded along the shear bands fo…
Abstract Data from three plant growth studies conducted in controlled environments with seven phosphate rocks (PR) and 18 soils demonstrated how and to what degree selected PR and soil characteristics influence rock phosphate release. Rock phosphate release was calculated as the sum of the increase in plant P uptake a…
Fabrication techniques are investigated with a view to producing single phase perovskite lead indium niobate (PbIn1/2Nb1/2O3). The physical properties of ceramics produced using the various techniques are investigated. The dielectric relaxation of lead indium niobate is also characterised.
Abstract With the wide variety of elastomers, fillers, and other compounding ingredients available today, there is increasing demand for rubber compounds with specific properties. The systematic development of the desired rubber compound can be undermined by the exposure of the compound to oxygen and ozone during use.…
The absorption and photoluminescence of lattice defects and of the cerium ion (Ce+3) in cerium-doped yttrium aluminum garnet have been measured after annealing single crystals of this material in various reducing atmospheres. The absorption in the 200–300-nm wavelength range is observed to decrease as the partial pres…
The effects of rare‐earth oxide additions on the oxidation of sintered Si 3 N 4 were examined. Insignificant oxidation occurred at 700o and 1000oC, with no evidence of phase instability. At 1372oC, the oxidation rate was lowest for Y203 and increased for additions of La 2 O 3 , Sm 2 O 3 , and CeO 2 , in that order. Da…
Abstract A leaching experiment was designed to evaluate the chemical, mineralogical, and morphological nature of precipitation products formed during the accelerated laboratory weathering of an alkaline fly ash. The ash, classified as alkaline Modic, was leached with 0.005 mol L −1 H 2 SO 4 in a series of five leachin…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCleavage of ruthenium and osmium porphyrin dimers: formation of organometallic ruthenium porphyrin complexes and highly reduced metalloporphyrin speciesJames P. Collman, P. J. Brothers, L. McElwee-White, E. Rose, and L. J. WrightCite this: J. Am. Chem. Soc. 1985, 107, 15, 45…
Desorbed gases from insulator surfaces may be much more important in flashover initiation than properties of the dielectric surface. Ambient neutral densities, immediately above the insulator surface, in the initial stages of flashover have been calculated to lie in the range from 2×1017/cm3 to 2×1021/cm3 with a mean…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolyaza cavity shaped molecules. 4. Annelated derivatives of 2,2':6',2"-terpyridineRandolph P. Thummel and Yurngdong JahngCite this: J. Org. Chem. 1985, 50, 14, 2407–2412Publication Date (Print):July 1, 1985Publication History Published online1 May 2002Published inissue 1 Ju…
Abstract The melt flow behavior of thermoplastic polypropylenenatural rubber blends has been evaluated with specific reference to the effects of blend ratio, extent of dynamic crosslinking of the rubber phase and temperature, on viscosity, flow behavior index, and deformation of the extrudate. The proportion of rubber…
Moisture from perspiration collects in and passes through clothing as worn, and the properties of clothing fabrics influence both the collection and passage of this moisture. The selection and measure of moisture properties that relate to comfort in wear has proved to be more difficult than first perceived. Dynamic su…
Glass formation in the system Ln 2 O 3 ‐B 2 O 3 (Ln = Nd, Sm) was studied. Glasses could be formed in the range from 0 to ‐28 mol% rare‐earth oxide (Ln 2 O 3 ), but liquid immiscibility in these systems limits the range of homogeneous glasses to 0 to 1.5 and 25 to 28 mol% Ln 2 O 3 . The infrared spectra indicate that…