Abstract: A surface acoustic wave device includes a piezoelectric substrate and an electrode section, disposed on the piezoelectric substrate, having a thin-film structure. The electrode section includes interdigital electrodes and junction electrodes connected to the interdigital electrodes. The interdigital electrodes each include corresponding first base layers containing Ta and Cu layers or Cu—M alloy layers each disposed on the corresponding first base layers, wherein M represents one or more elements selected from the group consisting of Ag, Sn, and C.

Abstract: A fullerene derivative, with a solubility in n-hexane of not lower that 0.1 mg/ml at 25° C., includes a fullerene skeleton and three or more organic groups attached to the fullerene skeleton, where each of the organic groups is represented by the general formula (III): —CH2—X (R2)(R3)(R4)??(III) where X represents an element belonging to the group 14 in the periodic table; and R2, R3 and R4 may be the same or different and each represents a hydrogen atom, hydrocarbon group, alkoxy group or amino group.

Abstract: A fullerene derivative, with a solubility in n-hexane of not lower that 0.1 mg/ml at 25° C., includes a fullerene skeleton and three or more organic groups attached to the fullerene skeleton, where each of the organic groups is represented by the general formula (III): CH2—X (R2)(R3)(R4)??(III) where X represents an element belonging to the group 14 in the periodic table; and R2, R3 and R4 may be the same or different and each represents a hydrogen atom, hydrocarbon group, alkoxy group or amino group.

Abstract: The present invention relates to a fullerene derivative having a partial structure represented by the general formula (I): wherein C1 to C8 are carbon atoms constituting a fullerene skeleton in which C6 to C8 are independently bonded to an organic group having 1 to 50 carbon atoms, and C1 is bonded to a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms.

Abstract: IDT electrodes are formed by a Cu alloy. When the wavelength of a SAW propagating in the direction of the X axis of a piezoelectric substrate is indicated by ?, and when the thickness of the IDT electrodes is indicated by H, the standardized thickness H/? of the IDT electrodes ranges from 0.045 to 0.070, and the piezoelectric substrate is a rotated Y-cut LiTaO3 substrate whose rotational cut angle ? from the Y axis to the Z axis around the X axis ranges from 52.0° to 58.0°. With this arrangement, the reflection coefficient S11 becomes 0.88 or higher.

Abstract: IDT electrodes are formed by a Cu alloy. When the wavelength of a SAW propagating in the direction of the X axis of a piezoelectric substrate is indicated by &lgr;, and when the thickness of the IDT electrodes is indicated by H, the standardized thickness H/&lgr; of the IDT electrodes ranges from 0.045 to 0.070, and the piezoelectric substrate is a rotated Y-cut LiTaO3 substrate whose rotational cut angle &thgr; from the Y axis to the Z axis around the X axis ranges from 52.0° to 58.0°. With this arrangement, the reflection coefficient S11 becomes 0.88 or higher.

Abstract: A surface acoustic wave device includes a piezoelectric substrate and an electrode section, disposed on the piezoelectric substrate, having a thin-film structure. The electrode section includes interdigital electrodes and junction electrodes connected to the interdigital electrodes. The interdigital electrodes each include corresponding first base layers containing Ta and Cu layers or Cu-M alloy layers each disposed on the corresponding first base layers, wherein M represents one or more elements selected from the group consisting of Ag, Sn, and C.

Abstract: The solubility of the fullerene derivative of the invention in n-hexane at 25° C. is not lower than 0.1 mg/ml.

Abstract: A corrosion resistant zirconium alloy for use as a nuclear reactor cladding material. This alloy consists essentially of, on a weight % basis 0.02-1.7 % Sn, 0.19-0.6% Fe, 0.07-0.4% Cr, 0.01-0.2% Ta, and optionally 0.05 up to less than 0.5% Nb, the balance being Zr and incidental impurities, provided that the content of the nitrogen in the form of incidental impurities is no more than 60 ppm.

Abstract: A zirconium alloy for use in spacer grids for nuclear reactor fuel claddings, which consists essentially of, on a weight percent basis,2.5 to 10% Nb,0.01 to 1.5% of one or more components selected from the group consisting of Y and rare earth elements and oxides thereof,0.05 to 1% of one or more optional element selected from the group consisting of Fe, Cr, Mo and V, andthe remainder Zr and incidental impurities.

Abstract: A zirconium alloy that has sufficient corrosion resistance, strength and stress relaxation property for use as a component of a pressurized water nuclear reactor fuel assembly is disclosed. This alloy consists essentially of 0.2 to 0.91% Sn, 0.18 to 0.6% Fe, 0.07 to 0.4% Cr, one or both of 0.05 to less than 0.5% and 0.01 to 0.2% Ta, one or both of 0.05 to 1% V and 0.05 to 1% Mo, with the balance being Zr and incidental impurities, all percentages being based on weight.

Abstract: A corrosion resistant zirconium alloy for use as a nuclear reactor cladding material. This alloy consists essentially of, on a weight % basis 0.02-1.15% Sn, 0.19-0.6% Fe, 0.07-0.4% Cr, and optionally 0.05 to not more than 0.5% Nb, the balance being Zr and incidental impurities, provided that the content of the nitrogen in the form of incidental impurities is no more than 60 ppm.

Abstract: A process for producing a purified hydrochloric acid from hydrogen chloride gas generated by reacting an alkali chloride with sulfuric acid is provided, which process comprises washing the hydrogen chloride gas with a hydrochloric acid having a saturation concentration and having the resulting gas absorbed in water.This process does not require such a particular purification step as redistillation or reabsorption.

Abstract: Hydrochloric acid produced by reacting an alkali chloride with sulfuric acid to prepare hydrogen chloride gas, followed by having the gas absorbed in water, contains a slightest amount of Br.sub.2 and other coloring materials as volatile impurities, but such amounts of impurities can be removed according to a purifying process in which the resulting hydrochloric acid is treated with an inert gas or a mixture of an inert gas with oxygen.

Abstract: To ensure anodic oxidation treatment for aluminum or aluminum alloy products with less electric power loss and longer durability at reduced operating cost a useful anode member constructed of zirconium alloy is proposed in accordance with the present invention, which serves to carry thereon aluminum or aluminum alloy products to be anodized and acts as electric contact through which current is fed.