Materials Literature
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The character of a planar tensile stress (observed) in evaporated gold films has been investigated by means of bending method and X-ray diffraction. It has been found that stress increases with increasing film thickness in films thinner than 1000 Å and approaches to a certain values of the order of 10 9 dyn/cm 2 in th…
Abstract Acetal copolymers prepared from trioxane and ethylene oxide consist of polyoxymethylene segments with oxyethylene units distributed in the chain. These oxyethylene units profoundly affect the thermal and chemical behavior of the polymer. The presence of the oxyethylene units renders the copolymer amenable to…
The structure of LizSO4. H20 has been refined by the method of least squares with three-dimensional X-ray diffraction data measured by counter techniques from an approximately spherical crystal. Unitcell dimensions are a=5.454, b=4857, c=8.173 /~, and fl=107 22, and the space group is P21. Although a final R of 38 % w…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolarized Spectra of Tetracyano Nickelate CrystalsC. J. Ballhausen, N. Bjerrum, R. Dingle, Klaas Eriks, and C. R. HareCite this: Inorg. Chem. 1965, 4, 4, 514–518Publication Date (Print):April 1, 1965Publication History Published online1 May 2002Published inissue 1 April 1965…
"Effects of Radiation on Materials and Components." Nuclear Science and Engineering, 21(4), pp. 588–589
Abstract The polymerization of styrene on neutral mineral surfaces has been studied. It has been shown that the polymerization has characteristics expected for both a radical and cationic reaction, and a mechanism involving a radical‐carbonium ion is proposed to explain this evidence. A range of mineral catalysts have…
When Pt-, Cu-, and Zn-phthalocyanines are vacuum-evaporated onto cleavage faces of muscovite, single-directional orientation occurs at lower substrate temperature. At higher temperature ranges, Zn-phthalocyanine has a double-directional orientation while Pt- and Cu-phthalocyanines show triple-directional ones. High-re…
The word "one-shot" in flexible urethane foam technology was the harbinger of lower cost products with reproducible properties. The development of L-520 organosilicone stabilizers along with tin catalysts made one- shot flexible foam a reality. The basic prin ciples learned in flexible foam have been ex tended to a on…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Heat of Hydration of Cobalt Sulfate Hexahydrate to Heptahydrate. Their Solubilities and Heats of Solution1G. E. Brodale and W. F. GiauqueCite this: J. Phys. Chem. 1965, 69, 4, 1268–1272Publication Date (Print):April 1, 1965Publication History Published online1 May 2002Pu…
A description is given of the design, construction and use of an attachment for an X-ray diffractometer which enables lattice parameters to be determined to 1 part in 20 000 at temperatures between room temperature and 1000°C. Special attention is given to the problems of temperature measurement and uniformity. The in…
The semiconductor to metal transition in VO 2 is discussed in connection with the crystal distortion on the basis of a simplified one-dimensional model. It is shown that a localized electron state forming ion pairs will be stabilized at low temperatures when the transfer energy makes a sudden increase for a small cont…
Abstract A study of the elastic properties of collagen tendons while in the crystalline state while undergoing shrinkage, and while in the amorphous state was carried out. An additional analysis of x‐ray diffraction patterns and birefringence was also performed. Our main observations are the following. The lattice spa…
Abstract The pressure drop of aqueous model nylon fibre suspensions was determined in a vertical 2‐in. copper tube in the turbulent range as a function of velocity, fibre length‐to‐diameter ratio (L/D) and concentration. Fibre diameters ranged from 20.2 to 51.6 microns and length from 0.52 to 1.21 mm. A marked depress…
"Fundamentals of Heat Transfer." Nuclear Science and Engineering, 21(4), pp. 586–587
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComplexes Derived from Strong Field Ligands. XX. The Effect of Extraplanar Ligands on the Properties of Transition Metal 4,4',4",4'"-TetrasulfophthalocyaninesJames H. Weber and Daryle H. BuschCite this: Inorg. Chem. 1965, 4, 4, 472–475Publication Date (Print):April 1, 1965Pu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Differential Thermal Analysis of Perchlorates. VII. Catalytic Decompositions of the Alkali Metal Perchlorates by Manganese DioxideMeyer M. Markowitz and Daniel A. BorytaCite this: J. Phys. Chem. 1965, 69, 4, 1114–1123Publication Date (Print):April 1, 1965Publication Hist…
Abstract Das bisher unbekannte CaSc 2 O 4 wurde dargestellt und untersucht. CaSc 2 O 4 ist farblos, es kristallisiert orthorhombisch, Raumgruppe D ‐Pnam mit den Gitterkonstanten a = 9,65, b = 11,20, c = 3,16 Å. Die Elementarzelle enthält 4 Formeleinheiten. Die Kristallstruktur wurde unter Verwendung von P ATTERSON ‐ u…
Alloys of nominal composition Bi 2−x Sb x Te 3+y were prepared in an evacuated, sealed ampule by a horizontal zone melting method. Single-crystal samples were cut from the ingots, and measurements of Seebeck coefficient, electrical conductivity, thermoelectric figure of merit (Z), and thermal conductivity (κ) were mad…
The segregation of MgO solute at grain boundaries in Al 2 O 3 controls the grain‐growth kinetics during sintering. In the initial stages of sintering where grain growth can be neglected, the MgO solute causes a decreased sintering rate by reducing the surface energy and/or the diffusion coefficient of the rate‐determi…
Abstract Literature data for the effect of mineral fillers on the mechanical properties of polyethylene at two temperatures, styrene–butadiene rubber, and natural rubber were examined. The data for modulus, tensile strength, elongation at yield, and ultimate elongation could be well represented by linear plots of the…