Materials Literature
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The control of the microstructure of Ce‐doped Al 2 O 3 /ZrO 2 componsites by the valence change of cerium ion has been demonstrated. Two distinctively different types of microstructure, large Al 2 O 3 grains with intragranular ZrO 2 particles and small Al 2 O 3 grains with intergranular ZrO 2 particles, can be obtaine…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTExciplex formation between pyrene derivatives and N,N-dimethylaniline in Aerosol OT reversed micellesClaudio D. Borsarelli, Juan J. Cosa, and Carlos M. PrevitaliCite this: Langmuir 1992, 8, 4, 1070–1075Publication Date (Print):April 1, 1992Publication History Published onlin…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLithium-transition metal complexes derived from meso-octaethylporphyrinogen which display .sigma.- and .pi.-bonding modesJayne Jubb, Denis Jacoby, Carlo Floriani, Angiola Chiesi-Villa, and Corrado RizzoliCite this: Inorg. Chem. 1992, 31, 7, 1306–1308Publication Date (Print):…
1-Methyluracil (1-methyl-2,4-dioxopyrimidine), C5H6-N2O2, M(r) = 126.12, orthorhombic, Ibam, a = 13.188 (6), b = 13.175 (5), c = 6.214 (3) A, V = 1079.7 (8) A3, Z = 8, Dx = 1.552 g cm-3, lambda (Mo K alpha) = 0.7107 A, mu = 1.317 cm-1, F(000) = 528, T = 123 K, R(F2) = 0.068 for 2996 reflections with sin theta/lambda l…
Experimental and theoretical studies are reported on the room temperature capacitance-voltage (CV) and (tan delta )-V response of a high-voltage barium titanate ceramic disc capacitor with prescribed nonlinear CV response, as fabricated for an intended power electronics application. The CV response was modeled in term…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInitiation of vinyl ether polymerization by trimethylsilyl triflate, dimethyl sulfide, and adventitious waterChang Gi Cho, Ben Ami Feit, and Owen W. WebsterCite this: Macromolecules 1992, 25, 8, 2081–2085Publication Date (Print):April 1, 1992Publication History Published onl…
Simulations of the temperature dependence of the nematic orientational order parameter, [Pbar] 2, at different densities have been made using the Gay-Berne potential. The results are used to calculate Γ = −(∂In T/∂ IN V) [Pbar] 2, which is a measure of the relative sensitivity of [Pbar] 2 to temperature and density. P…
Hard carbon coatings with diamond-like properties were applied on AISI M-50 steel rods which were subjected to rolling contact fatigue (RCF) testing at a cyclic Hertzian stress level of 5.5 GPa. The coatings were produced using a single, broad beam ion source that directed 450 eV ions, derived from a methane discharge…
Abstract Boron adsorption at constant ionic strength [0.09 ± 0.01 moles/liter of KClO 4 or Ca(ClO 4 ) 2 ] on 0.2−2 μ m clay fraction of pretreated kaolinite was modeled using both phenomenological equations and surface complexation reactions. Phenomenological equations were expressed as linear relationships between th…
Nickel was modified at the surface from dilute acid solution containing different concentrations of , , or . It was shown that improvement in the over potential (η)) and in the exchange current density of the hydrogen evolution reaction (HER) in 3 M on the electrode depends on the nature of the heteropolyacid of the m…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSimultaneous EPR and electrochemical measurements on polyaniline in ambient temperature molten saltsJ. Tang, R. D. Allendoerfer, and R. A. OsteryoungCite this: J. Phys. Chem. 1992, 96, 8, 3531–3536Publication Date (Print):April 1, 1992Publication History Published online1 Ma…
Ag 1 − x [ ( Y 2 O 3 ) 0.1 ( ZrO 2 ) 0.9 ] x (YSZ) cermet thin films have been deposited by reactive magnetron cosputtering from Ag and Zr/Y targets in Ar ‐ O 2 mixtures. The deposition conditions were such that the YSZ component in the films was fully oxidized. The film densities varied from ≈75% to >85% as the total…
Experimental evidence is provided to show that irreversible aging which leads to electrical treeing in polymeric insulation such as low-density and crosslinked polyethylene used in HV transmission cables, does not start at local fields between 5 and 20 kV/mm. It is shown that a much higher stress is required for elect…
Abstract The title compound (DPP) is a new red pigment based on the diketopyrrolopyrrole chromophore. The evaporated film of DPP has a vivid red whose absorption spectrum is very similar to the molecular spectrum in solution. When exposed to acetone vapor, the film turns orange, and changes in photoelectrical properti…
A polycrystalline-silicon surface with hemispherical grains (HSG) is deposited by low-pressure chemical vapor deposition at 590 °C. At the temperature, 590 °C, the structure of the Si film just after deposition is amorphous, but crystallization of the amorphous Si occurs to produce HSG-Si during annealing after deposi…
We have investigated the molecular beam homoepitaxial and heteroepitaxial growth of InSe and GaSe III–VI compounds semiconductors. In situ reflection high-electron energy diffraction measurements reveal that two-dimensional epitaxial growth occurs on (00.1) oriented substrates, at substrate temperatures ranging from 3…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemical modification of halogenated polystyrene resins utilizing highly reactive calcium and the formation of calcium cuprate reagents in the preparation of functionalized polymersRichard A. O'Brien, Tianan Chen, and Reuben D. RiekeCite this: J. Org. Chem. 1992, 57, 9, 2667…
Magnetoelectric effect in magnetic insulators is reviewed. Alter an intuitive explanation of the effect in antiferromagnetic Cr 2 O3, the following topics are discussed on the experiments. Measurement and controlling of antiferromagnetic domains as well as antiferromagnetic domain wall motion. Expansion of the free en…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoracemization of optically active 1,1'-binaphthyl derivatives: light-initiated conversion of cholesteric to compensated nematic liquid crystalsMingbao Zhang and Gary B. SchusterCite this: J. Phys. Chem. 1992, 96, 7, 3063–3067Publication Date (Print):April 1, 1992Publicat…
Because of considerable interest at US EPA for the collection of polar organic compounds in stainless steel canisters, particularly for the Toxic Air Monitoring Site (TAMS) study, the stability of 10 selected polar organics in canisters was investigated and the results are described in this paper. The polar organic co…