摘要:
A porous sintered lanthanum manganite body has an alkali metal content of at least 100 ppm and the alkali metal concentration in the lanthanum manganite crystal grains is higher adjacent the grain boundaries than away from the grain boundaries. The body is made by forming a shaped green body of material and firing the shaped green body, the sinterable material has a content of alkali metal of at least 100 ppm. The sintered body has improved strength, and is suitable for example as an air electrode of a solid oxide fuel cell.
摘要:
There is provided a zeolite membrane which is thinner than a conventional membrane and which has improved permeability and a method for manufacturing the zeolite membrane. The method includes a surface layer forming step for forming a surface layer by attaching a low polar polymer on a first surface of a porous substrate to cover the surface, a filling step for filling a masking polymer into pores in the porous substrate from a surface different from the first surface of the porous substrate up to the surface layer by impregnating the porous substrate with the masking polymer and solidifying the masking polymer, and a surface layer removing step for removing the surface layer. After the surface layer removing step, a zeolite membrane is formed on the first surface of the porous substrate.
摘要:
12CaO.7Al2O3 polycrystal having high conductivity is provided. It has become obvious that the conductivity of the 12CaO.7Al2O3 polycrystal becomes 100 [S/cm] or more by controlling a nitrogen content in the 12CaO.7Al2O3 polycrystal within a range of 0.3 to 1.1 [wt %], and that the conductivity becomes 150 [S/cm] or more by controlling the nitrogen content within a range of 0.5 to 0.9 [wt %].
摘要:
A laminated radiation member includes a radiation plate, an insulation substrate bonded to the upper surface of the radiation plate and an electrode provided on the upper surface of the insulation substrate. The laminated radiation member is made by a method including the steps of surface treating a bonding surface of the radiation plate and/or the insulation substrate, interposing ceramic particles surface treated to assure wettability with a hard solder or a metal between the radiation plate and the insulation substrate, disposing a hard solder above and/or below the ceramic particles, heating the hard solder to a temperature higher than the melting point of the solder, penetrating the molten hard solder into spaces between the ceramic particles to react the ceramic particles with the solder to produce a metal base composite material, and bonding the radiation plate and the insulation substrate with the metal base composite material.
摘要:
A surveying instrument includes an optical distance meter which has a light-transmitting optical system and a light-receiving optical system, the light-receiving optical system including a light-receiving element; a first wavelength selection filter and a second wavelength selection filter for allowing only light within a first wavelength range to pass therethrough, to be thereafter incident on the light-receiving element, wherein the first wavelength selection filter allows light with a wavelength equal to or greater than a first specific wavelength to pass therethrough, and a second wavelength selection filter allows light with a wavelength equal to or shorter than a second specific wavelength, which is longer than the first specific wavelength, to pass therethrough; and an angle adjusting device for adjusting an angle of inclination of the first and second wavelength selection filter with respect to an optical path thereof.
摘要:
A corrosion-resistant member includes a substrate made of an aluminum-containing ceramic material and an aluminum fluorine containing film which coats at least a part of a surface of the substrate. The aluminum fluorine-containing film, which is formed by directly contacting the substrate with a fluorine-containing compound, has a thickness of 0.01-5.0 &mgr;m. The substrate contains silicon in an amount of not more than 0.5% by weight when calculated as silicon dioxide. Thereby, changes in weight due to corrosion can be decreased and generation of particles can be further controlled upon exposure to a corrosive halogen gas.
摘要:
This invention relates to an aluminum nitride sintered body comprising aluminum nitride crystal grains, in which the grains have a given content of a rare earth element (a conversion content as an oxide thereof), a given average grain size, and a given spin amount per unit mg of aluminum obtained from a spectrum as measured by an electron spin resonance method. The aluminum nitride sintered body is used in an electronic functional material and an electrostatic chuck.
摘要:
Zinc powder comprising particles having part or all of their surfaces coated either with copper and/or indium or with silver is used as a battery material or an active material for the negative electrode in a battery. The powder can be used as an anode active material in a secondary battery to achieve a higher discharge capacity and better cycle characteristics.