Materials Literature
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An electron optical system is described which is suitable for energy loss analysis in an electron microscope. A focusing spectrometer of the Wien type has been added underneath the column of a Hitachi HU11A electron microscope. After passing through the microscope, the electrons are slowed down before entering the spe…
Dielectric measurements are reported on capacitance thermometers based on SrTiO3 crystallized from glass at 1100 and 1200°C. Multilayer experimental units, approximately 5×2×1 mm, were fabricated using pilot plant facilities and measured from 1.7 to 300 K. If both the capacitance and loss tangent are measured, the ran…
A theory of melting with application to liquid crystals in which both translational and orientational order parameters are taken into account is developed in a manner similar to that of Kirkwood and Monroe.
An increase in yield stress at room temperature was observed in Al-0.6W/0 Li alloy irradiated to thermal neutron doses of 2.9 × 1019 to 7.2 × 1019 cm−2. The hardening of as-irradiated specimens is accompanied with yield point followed by jerky yield-elongation in the stress-strain curve. The radiation hardening could…
Abstract The wave‐vector dependent dielectric function for LiCl, LiBr, LiI, NaCl, NaBr, Nal, KCl, KBr, and KI is calculated using a model originally proposed by Fry. An approximate analytical expression for the screened Coulomb potential is also given.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhase transitions in ordered barium-rare earth-molybdenum perovskitesHugo Steinfink and C. D. BrandleCite this: Inorg. Chem. 1971, 10, 5, 922–926Publication Date (Print):May 1, 1971Publication History Published online1 May 2002Published inissue 1 May 1971https://pubs.acs.org…
Abstract Results are presented of a study of the Hall effect (in the low‐temperature range 20 to 300 °K) and of the thermopower of the monocarbides VC x , NbC x , and TaC x within the limits of their homogeneity regions. Basing on the experimental results obtained and on earlier data on magnetic susceptibility and ele…
Abstract High molecular weight poly(ethylene sulfide) undergoes severe thermal degradation at the high temperatures (220–260°C) required for processing in injection‐molding equipment. Thermal degradation of the polymer is accompanied by gas evolution and a decrease in melt viscosity. Stabilization of poly(ethylene sul…
The variation of the postirradiation creep-rupture properties with irradiation temperature has been evaluated for air- and vacuum-melted Hastelloy-N.The air-melted material was high in silicon and ...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrganometallic Polymers. XI. Copolymerization of 2-Ferrocenylethyl Acrylate and Methacrylate with Styrene, Vinyl Acetate, Methyl Acrylate, and Methyl MethacrylateCharles U. Pittman Jr., Robert L. Voges, and William B. JonesCite this: Macromolecules 1971, 4, 3, 298–302Publica…
1 lorillo, A. J., Damping Dynamics of Axisymmetric Rotor Stabilized Satellites, ASME Winter Meeting, Chicago, 111., Nov. 1959. 2 Likins, P. W., Criteria for Dual Spin Journal of Spacecraft and Rockets, Vol. 4, No. 12, Dec. 1967, pp. 1638-1643. 3 Mingori, D. L., Effects of Energy Dissipation on the Attitude of Dual-Spi…
The thermal decomposition of oxalates of ammonium and potassium was studied by simultaneous TGA, DTA, and EGA (effluent gas analysis). Of the simple oxalates, the potassium compound is more stable than the lithium compound, as has been observed for the corresponding carbonates and sulfates. Ammonium oxalate is much le…
The process of large strain plastic deformation, such as commonly found in the machining process, has been investigated by transmission and scanning electron microscopy techniques. The lamella-shear front nature of deformation in copper and aluminum chips has been elucidated fully and the occurrence of lamellae has be…
Magnetic susceptibility and specific heat of the β-MnO 2 powder specimen have been measured in the range 20 to 300°K and 77 to 100°K respectively. The measurements have also been made for the paramagnetic inelastic neutron scattering at room temperature by using time-of-flight method. The values of the Weiss temperatu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTUnusual metalloporphyrins. VII. Porphyrin bridging two metal atoms: .mu.-[mesoporphyrin IX dimethyl esterato]bis[tricarbonylrhenium(I)]M. Tsutsui, D. Ostfeld, C. P. Hrung, and D. C. ConwayCite this: J. Am. Chem. Soc. 1971, 93, 10, 2548–2549Publication Date (Print):May 1, 197…
The literature on intergranular corrosion of austenitic stainless steels is reviewed, with particular reference to the theories of intergranular corrosion and the connexion between carbide morphology and the corrosion susceptibility. In the Strauss solution, intergranular corrosion is due to the formation of a chromiu…
A two-dimensional polynomial method is described which allows rapid evaluation of bond-scattering factors in a structure factor least-squares program. Correlation effects between electron population parameters are analyzed. It is concluded that simultaneous refinement of 2s2 and three 2p2 one-center populations is not…
Kazuhiro Tsuji, Michio Sorai, Syûzô Seki; New Finding of Glassy Liquid Crystal – a Non-equilibrium State of Cholesteryl Hydrogen Phthalate, Bulletin of the
Enthalpy content measurements on pure KCl, AgCl, CuCl, PbCl 2 , Ag 2 S, and PbS were made at temperatures up to 1000 °C using a sapphire calibrated drop calorimeter. Similar measurements were performed on AgCl–Ag 2 S and AgCl–KCl melts. These results determined values for the integral enthalpy of liquid–liquid mixing.
Abstract The effect of temperature and strain rate on the compressive yield behavior of polystyrene is compared with the effect of the same variables on crazing in tension. The results support the conclusion of other, more extensive work, which shows that crazing involves the same types of molecular processes as those…