Materials Literature
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Abstract An intumescnt material has been developed, based on alkali silicates, which can be used in fire protection in the form of sheets or boards which can be joined to various materials, ranging from wood and wood products to metal. The swelling of the material on heating to over 100°C or on contact with a flame is…
Tenfold twins have been found in a splat-quenched NiZr alloy by selected-area electron diffraction, dark-field and high-resolution electron microscopy. The NiZr phase has a C-centred orthorhombic lattice and the twinning plane is either (110) or (100) with an angle of about 36° between these two planes. The relationsh…
Abstract The sulfation rates of reagent grade calcium and zinc oxides and technical grade magnesium oxide with sulfur trioxide and sulfur dioxide ‐ oxygen mixtures have been measured thermogravimetrically. Experiments have been conducted to determine the rate of reaction for various particle radii (0.071‐0.151 mm), te…
A numerical method has been devised which enables the simultaneous changes of solute distribution in the solid and the liquid in the solidifying volume between secondary dendrite arms to be described. Simplifying assumptions are made in the geometric model, but not of solid or liquid diffusivities. A previously used f…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular distortions and solid-state cadmium-113 NMR: crystal and molecular structure of the piperidine adduct of (5,10,15,20-tetraphenylporphyrinato)cadmium(II), cadmium-113 NMR solution and solid-state spectra and potential energy calculationsP. F. Rodesiler, E. A. H. Gri…
The aragonite-calcite and calcite-lime transformations are observed in situ in the high voltage transmission electron microscope. Above 400C aragonite single crystals begin to transform into calcite through heterogeneous nucleation on dislocations, twin boundaries, and modulated microstructures. Subsequent growth is g…
Abstract The selection of elementary calibration standards for X‐ray photoelectron spectrometers is discussed; it is suggested that Zn and Ga may be more satisfactory routine single‐element standards than Cu, Ag or Au. Binding energies for the 2p 3/2 and 3d photoelectron peaks from elemental Zn, Ga (and Ge) and for th…
Some recent developments in the dislocation theory of plastic deformation in ionic crystals are reviewed. It has been found that the Peierls force operates on slip planes of type {110} and {00l}, that interactions between dislocations and point defects are different on these planes, that point defects are produced by…
Abstract Interstratified illite-smectites from Carboniferous sediments from the Alston and Askrigg blocks and the intervening Stainmore trough of the northern Pennines, UK, were examined by XRD. Both blocks are underlain by Caledonian granites. During late Carboniferous times sediments overlying the Alston block were…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation R. G. Larson; Nonlinear Shear Relaxation Modulus for a Linear Low‐Density Polyethylene. J. Rheol.…
Abstract Die Oxidsulfide A — CaLaGa 3 S 6 O a = 9,2706(8), c = 6,0351(9) Å; B — SrLaGa 3 S 6 O a = 9,347(10), c = 6,0893(10) Å; C — La 2 ZnGa 2 S 6 O a = 9,3653(15), c = 6,0928(10) Å und D — Sr 2 ZnGe 2 S 6 O a = 9,4054(7), c = 6,1718(7) Å wurden erstmals präpariert. Für A und C wurden die Lageparameter mit Einkristal…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA vibrational spectroscopic characterization of the solid-phase behavior of n-decylammonium chloride (n-C10H21NH3Cl) and bis(n-decylammonium) tetrachlorocadmate [(n-C10H21NH3)2CdCl4]H. L. Casal, D. G. Cameron, and H. H. MantschCite this: J. Phys. Chem. 1985, 89, 25, 5557–556…
Glass formation in the systems (mole percent) 25La 2 O 3 · xR 2 O 3 · (75 ‐ X)B 2 O 3 (R = Al, Ga) and (25 ‐ x)La 2 O 3 · xLn 2 O 3 · 75B 2 O 3 (Ln = Gd, Er, Y) was investigated. Up to 25 mol% Al 2 O 3 or Ga 2 O 3 can be substituted for B 2 O 3 , but more than ∼ 5 mol% Ln 2 O 3 substituted for La 2 O 3 caused macro ph…
The anodic oxygen evolution reaction on Teflon‐bonded and Li‐doped in solution was studied by potentiostatic and galvanostatic techniques as a function of hydroxyl ion concentration, and the kinetic equations were derived. It was shown that the rate‐determining step (rds) for at current densities of 100–1000 mA‐cm −2…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNMR of silk fibroin. 4. Temperature- and urea-induced helix-coil transitions of the -(Ala)n- sequence in Philosamia cynthia ricini silk fibroin protein monitored by carbon-13 NMR spectroscopyTetsuo Asakura and Toshio MurakamiCite this: Macromolecules 1985, 18, 12, 2614–2619P…
Changes in the silicate concentration of the culture medium at growth-saturating concentrations had little effect on the silica content of cells of Coscinodiscus granii Gough at a given light intensity. However, there was a highly significant inverse relationship between silica content and light intensity. At a silica…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal and band electronic structures of an organic salt with the first three-dimensional radical-cation donor network, (BEDT-TTF)Ag4(CN)5Urs Geiser, Hau H. Wang, Larry E. Gerdom, Millicent A. Firestone, Lauren M. Sowa, and Jack M. WilliamsCite this: J. Am. Chem. Soc. 1985,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular characterization of poly(2-methyl-1,3-pentadiene) and its hydrogenated derivative, atactic polypropyleneZhongde Xu, Jimmy Mays, Xuexin Chen, Nikos Hadjichristidis, F. C. Schilling, H. E. Bair, Dale S. Pearson, and Lewis J. FettersCite this: Macromolecules 1985, 18,…
A surface topography measuring system using SEM with a pair of secondary electron detectors has been developed. The detectors' outputs are processed by a micro-computer to construct a calibrated surface profile of a specimen. A resolution of 2 nm In the Z-direction has been obtained. The system also provides sum and d…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Miguel A. Bibbo, Steven M. Dinh, Robert C. Armstrong; Shear Flow Properties of Semiconcentrated F…