Abstract:
An Ni—Ti—Nb based multiple phase alloy consists of a combined phase which comprises a phase for the hydrogen permeability and a phase for the resistance to hydrogen embrittlement. The alloy has a composition satisfying the formula: NixTiyNb(100-x-y) in which x=25˜45 mol % and y=25˜55 mol %. A metal membrane for hydrogen separation-purification is prepared using the alloy material. The alloy material is prepared by blending Ni, Ti and Nb and melting the blend. The metal membrane permits the hydrogen separation-purification and thus the resulting purified hydrogen gas can be used as a fuel and can be applied to fields of production of semiconductors.
Abstract:
An Nb—Ti—Co alloy having both good hydrogen permeability and good hydrogen embrittlement resistance comprises one of Fe, Cu or Mn as a fourth element, incorporating from 1 to 14 mol %. The content of Mn, if any, is preferably from 1 to 9 mol %. The desired hydrogen permeability can be attained by the (Nb, Ti) phase and the desired hydrogen embrittlement resistance can be attained by the CoTi phase, making is possible to obtain excellent hydrogen permeability and excellent hydrogen embrittlement resistance. None of Fe, Cu or Mn can impair these properties. Fe, Cu or Mn can replace some of the Co elements. Fe, Cu or Mn enhances the workability of the alloy.
Abstract:
A junction field effect transistor has a first conductivity type substrate with high impurity concentration, a first conductivity type layer with low impurity concentration which is layered on the substrate, a first region of first conductivity type and with high impurity concentration which is formed in the surface region of the layer, and a second region of second conductivity type and with high impurity concentration which is formed in the surface region of the layer, substantially surrounding the side wall of the first region. The thickness of the layer is within the range from 4.0 to 6.0 .mu.m. The minimum width of the portion surrounded by the second region and the impurity concentration of the layer fall within the area with four corners A, B, C and D where these corners correspond to the four coordinates (log.sub.10 4.times.10.sup.15, 2.0), (log.sub.10 18.times.10.sup.15, 1.2), (log.sub.10 18.times.10.sup.15, 0.5) and (log.sub.10 4.times.10.sup.15, 1.1) of a rectangular coordinates of which the Y-distance represents the minimum width and the X-distance is the impurity concentration in the logarithmic scale.
Abstract:
Disclosed is a furnace whose NOx emission may be reduced to a minimum degree so far unattainable in any prior art furnaces by optimumly controlling the ratio of exhaust gas mixed with the combustion air to be supplied to the burners to the exhaust gas to be mixed with the two-stage combustion air which is admitted through air nozzles into the combustion chamber and also by optimumly controlling the distribution of the two-stage combustion air in the combustion chamber depending upon the operating conditions. The present invention may be applied to any types of furnaces.
Abstract:
A logic circuit comprises four NAND or NOR gates. The first and second gates are cross-coupled and the third and fourth gates are also cross-coupled. The outputs of the first and second gates are coupled to the inputs of the third and fourth gates respectively. Complementary clock pulses are respectively supplied to the first and second gates and the third and fourth gates, and first and second logic inputs are applied to the inputs of the first and second gates, respectively.
Abstract:
The present invention is provided to achieve smooth devanning or depalletizing of rectangular packages while managing various situations. Package identification codes 10a, 10b, 10c, 10d are displayed at a predetermined position of each of four surfaces of front, back, left and right or on each of all surfaces of a package 5A having a rectangular shape, and code data-of the identification codes is identified by a predetermined controller via a reading unit. The code data includes size information of a height size and a width size of a code display surface of the package 5A. The controller of a robot having the reading unit and a robot hand is configured to position the robot hand with the package 5A based on a code display position and the size information.
Abstract:
An Nb—Ti—Co alloy having both good hydrogen permeability and good hydrogen embrittlement resistance comprises one of Fe, Cu or Mn as a fourth element, incorporating from 1 to 14 mol %. The content of Mn, if any, is preferably from 1 to 9 mol %. The desired hydrogen permeability can be attained by the (Nb, Ti) phase and the desired hydrogen embrittlement resistance can be attained by the CoTi phase, making is possible to obtain excellent hydrogen permeability and excellent hydrogen embrittlement resistance. None of Fe, Cu or Mn can impair these properties. Fe, Cu or Mn can replace some of the Co elements. Fe, Cu or Mn enhances the workability of the alloy.
Abstract:
A (Nb, Ti) phase in an Nb—Ti—Co alloy is composed of a granular structure. The Nb—Ti—Co alloy is preferably subjected to heat treatment at 800° C. or more so that the eutectic structure in the casted state can be changed to a granular structure. The Nb—Ti—Co alloy used there is preferably NbxTi(100-x-y)Coy, (x≦70, 20≦y≦50 (mol %)). By properly predetermining the heating temperature and time, the resulting alloy exhibits improved hydrogen permeability in combination with a good hydrogen embrittlement resistance characteristic in the CoTi phase, making it possible to provide a practical hydrogen permeable membrane having an advantageously high performance.
Abstract translation:Nb-Ti-Co合金中的(Nb,Ti)相由粒状结构构成。 Nb-Ti-Co合金优选在800℃以上进行热处理,使得铸态的共晶组织可以变为粒状结构。 其中使用的Nb-Ti-Co合金优选为Nb x Ti(100-x-y)Co y,(x <= 70,20 <= y <= 50(mol%))。 通过适当地预先确定加热温度和时间,所得合金在CoTi相中具有良好的耐氢脆性特性,显示出改善的氢渗透性,使得可以提供具有有利的高性能的实用的氢可渗透膜。
Abstract:
In a multiphase hydrogen permeation alloy comprising a phase in charge of hydrogen permeation and a phase in charge of hydrogen embrittlement resistance, a structure in which the phase in charge of hydrogen permeability is continuously interconnected and in which more preferably the growth direction of the aforementioned phase in charge of hydrogen permeation lies aligned in the thickness direction of the permeation membrane. As the hydrogen permeation alloy, an Nb—Ti—Co alloy is exemplified, wherein the phase in charge of hydrogen permeability is made of an (Nb, Ti) phase and the aforementioned phase in charge of hydrogen embrittlement resistance is made of a CoTi phase. By virtue of the fact that the growth direction of the phase in charge of hydrogen permeation lies aligned in the thickness direction of the permeation membrane, the hydrogen permeation pass length becomes short to give further improved hydrogen permeation property.
Abstract:
Distribution nozzles are arranged on an air distribution plate disposed at the lower portion of a furnace and spaced apart by a predetermined distance from the bottom thereof and one or more spouted nozzles extend upwardly from the air distribution plate so that not only a fluidized bed defined by the air discharged through the distribution nozzle but also one or more spouted beds defined by the air flows injected through the spouted nozzle or nozzles into the fluidized bed are formed within the furnace. Because of the coexistence of the fluidized bed and the spouted bed or beds, the agitated effect in the fluidized bed is enhanced and the combustion efficiency as well as the desulfurization can be pronounced. A particle feeding pipe is connected to the furnace to feed fuel and desulfurizing agent into the furnace. Secondary air from a secondary air supply pipe and portion of ash extracted through the bottom of the furnace by feed means are fed into the furnace at a position higher than the position of the opening of the particle feeding pipe into the furnace. A dust collector is disposed at a top of the furnace to circulate the ash trapped into the fluidized bed, whereby combustion efficiency as well as response to variations of load over a wide range can be ensured.