Materials Literature
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The microstructure of the weld heat affected zone (HAZ) of alloy 7075 was simulated using a Gleeble system. The corrosion behaviour of several locations in the weld HAZ was investigated by means of differential scanning calorimetry, electrochemical measurement in 3·5 wt-%NaCl solution, and exfoliation corrosion tests.…
The results of investigations of polarized Raman spectra in ZnSiF6⋅6H2O and NiSiF6⋅6D2O single crystals in the temperature range 2–300 K are presented. It is found that the crystals are orientationally ordered at low temperatures. The orientational disordering is described by a model in which the rotational motion of…
The 1H and 13C NMR spectra of glucodigifucoside and glucogitoroside, cardenolides isolated from Digitalis lanata leaves, were completely assigned with the aid of 2D homonuclear (COSY) and heteronuclear (HETCOR and HMQC) correlation spectra. © 1997 John Wiley & Sons, Ltd.
Abstract Yixunite and damiaoite were found in a cobalt‐ and copper–bearing platinum ore vein of a contact metasomatic deposit. The chief ore minerals are bornite, chalcopyrite, magnetite and carrollite. The platinum minerals include moncheite, sperrylite, daomanite, cobalt malanite and cooperite. Yixunite and damiaoit…
Article Luminescence Properties and Stability Constants of Curium(III) Complexes with Lacunary Heteropolyanions PW11O397- and SiW11O398- in Nitric Acid Solutions was published on December 1, 1997 in the journal Radiochimica Acta (volume 78, issue s1).
The internal friction and dynamic modulus in pure Cu with various purities were measured in the temperature range from 25 to 250 °C after deformation at room temperature. All the specimens showed a large decrease in modulus during primary recrystallization the temperatures of which were found to be about 30 K lower fo…
Source of material: Slow evaporation of a solution of stoichiometric quantities of lead(II) iodide and pyridinium iodide yields the title compound as yellow prisms. The title compound is another member of the large family of chain-perovskites. The anionic substructure consists of chains of face-sharing Pbl octahedra a…
A new method is provided for the calculation of Raman intensities. Atomic polarizabilities are used as parameters to reproduce the experimental intensities. The method was applied to an MgF2 signal crystal. It is shown that the use of anisotropic atomic polarizabilities allows the simulation of both the cell polarizab…
Article Crystal structure of a new modification of potassium tetrathioantimonate, ß-K3SbS4 was published on December 1, 1997 in the journal Zeitschrift für Kristallographie - New Crystal Structures (volume 212, issue 1).
of database ICSD in 1997, CSD-No
The intercalation reactions of iodine with the layered oxide ion conductors Sr x Bi 9 - x O (27 - x )/2 ( x = 0.90, 1.20, 1.50, 2.00, 2.40) have been studied by powder X-ray diffraction, thermogravimetric analysis, and Raman spectroscopy. X-ray diffraction data show that iodine atoms intercalate into the van der Waals…
The Raman active vibrational modes in (pi) -conjugated polymers are known to have different frequencies in different types of experiments. The best known examples are the resonant Raman scattering (RRS) and doping or photoinduced absorption infrared active vibrations (IRAV) measurements, in which the same modes appear…
Article Crystal structure of 1,2,4,5-benzenetetracarboxylate monohydrate cerium( III), C10H4CeO9 was published on December 1, 1997 in the journal Zeitschrift für Kristallographie - New Crystal Structures (volume 212, issue 1).
The concentration effect of palm oil fatty acid on curing characteristics and mechanical properties of carbon black filled natural rubber compounds was investigated. Results indicate that maximum torque increases with palm oil fatty acid concentration for all carbon black loadings investigated. Natural rubber compound…
Chemical vapor deposition (CVD) of boron from BCl 3 and H 2 was investigated in a dual-impinging jet reactor which was connected to an FT-IR spectrometer for on-line chemical analysis of the reactor outlet stream. Formation of the intermediate, BHCl 2, during CVD of boron on a hot tungsten substrate was experimentally…
The atomic structure of poly-molybdate ions formed in acid Ni-Mo aqueous solutions has been determined by applying anomalous X-ray scattering (AXS) and EXAFS methods. In a solution containing only molybdenum ions, we found only a poly-molybdate ion consisting of seven edgesharing MoO 6 octahedra. In a solution contain…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTNew Route to the Introduction of Axial and Helical Chiral Units into Poly(arylene ether)sZhi Yuan Wang and Judy E. DouglasView Author Information Department of Chemistry, Ottawa-Carleton Chemistry Institute, Carleton University, 112…
Pyro-carbon-coated fuel particles used in modular high-temperature gas-cooled reactor fuel rods have the potential to enhance fuel rod safety when they are packed in pressurized water reactor (PWR) fuel pellets. A fuel assembly design concept with new fuel pellets was introduced and its nuclear feasibility on PWR appl…
Abstract The distribution of clay minerals in recent sediments on the continental shelf and in the Bay of Cádiz has been analysed as part of a wider study of sedimentary exchange between the continent and the continental margin. The clay minerals included in the muddy sediments consist mainly of illite, kaolinite, sme…
Two high-molecular-weight organosoluble aromatic polyimides having the same diamine, 2,2′-(trifluoromethyl)-4,4′-diaminobiphenyl diamine (PFMB), but different dianhydrides, 2,2′-bis(trifluoromethyl)-4,4′,5,5′-biphenyltetracarboxylic dianhydride (HFBPDA) and 2,2′-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6…