摘要:
A steam generating apparatus includes: a liquid tank portion 1 for storing a liquid; an evaporator portion 2 which is directly connected to the liquid tank portion, heats the liquid supplied from the liquid tank portion, and generates steam; a steam storage portion 3 which is directly connected to the evaporator portion, and stores the steam generated by the evaporator portion; a passageway 4 which is directly connected to the steam storage portion and outwardly passes the generated steam; a liquid pathway 10b which is connected to the liquid tank portion, and supplies the liquid; and a heater unit 20 which is provided on one side of the evaporator portion, and heats at least the evaporator portion. The liquid tank portion 1, the evaporator portion 2, the steam storage portion 3, the passageway 4, and the liquid pathway 10b are formed within an integral member of a translucent material.
摘要:
A micro-chemical chip is comprised of a flow passage substrate (110) that includes a substrate (101) of transparent material having a plurality of flow passages (111) in one surface and an optical device (109) built in the other surface as a unit. In a micro-chemical chip manufacturing method according to the present invention, with metal dies 150 and 160 prepared to shape flow passages, wells, and an optical device(s), components such as the optical devices, flow passages, and the like are formed in a single molding process. The present invention is also directed to an optical unit manufacturing method where the atmospheric gas of nitrogen typically employed in the prior art is replaced with any gas of higher heat conductivity such as helium gas to heat and shape material in this alternative atmospheric gas and obtain the molded product.
摘要:
A minute circuit is configured by protruded flow passage walls provided on the surfaces, opposite to each other, of first and second flat members disposed facing each other. This configuration includes a case where the minute circuit has the first flat member including a pair of wall members spaced a width of said minute flow passage from each other and provided in a protruded shape on one surface, and the second flat member fitted so as to abut on at least an apex portion of the wall member, and a case where the minute circuit has the first flat member including a first wall member structuring one side wall of the minute flow passage and formed in a protruded shape, and the second flat member including a second wall member structuring the other side wall of the minute flow passage and formed in a protruded shape, and the surface of the first flat member and the second flat member are disposed facing each other so that a width of the minute flow passage is defined by the first wall member and the second wall member.
摘要:
A plasma-resistant article is provided in which a surface region of the article to be exposed to plasma in a corrosive atmosphere is formed from a zirconia-based ceramic that contains yttria in an amount of 7 to 17 mol %. The plasma-resistant article exhibits a sufficient resistance against exposure to plasma and is cost-effective. Preferably, the surface region has a centerline average roughness (Ra) of 1.2 to 5.0 nullm, which is readily achieved through the use of an etching solution containing hydrofluoric acid. The present invention also provides a production method for such a plasma-resistant article.
摘要:
A submerged nozzle for continuous thin-slab casting by which a high quality thin-slab strand may be stably supplied for a long time in a continuous manner is provided, as a drift current and surface fluctuation of molten steel in the nozzle and a mold are prevented, and adhesion of ground metal to the nozzle, the damages of the nozzle and the like are suppressed even under long time use. In the submerged nozzle for continuous thin-slab casting, which comprises: a molten steel entrance port at the upper end; a molten steel stream channel with a shape of a tube extending downward from the molten steel entrance port; and a molten steel discharge opening at the lower end and in which the molten steel stream channel includes an upper section with a shape of a circular cylinder, an intermediate section with a transforming shape from a shape of a circular cylinder to a shape of a flat cylinder, and a lower section with a shape of a flat and straight tube, a cross sectional area at the flat and straight tube section in the lower section is configured to be equal to or larger than 95% or equal to or less than 105% of a cross sectional area at the cylindrical section in the upper section of the molten steel stream channel.
摘要:
A wafer processing member having: a base material made of a material isotropic in all in-plane directions; and a ceramic film with which the base material is coated; wherein: the base material has a thickness of not larger than 3 mm; difference in coefficient of thermal expansion between the base material and the ceramic film is in a range of from 0.6null10null6 to 1.2null10null6/null C.; and variation in coefficient of thermal expansion of the base material in all in-plane directions is not larger than 0.05null10null6/null C.
摘要:
The invention presents an immersion nozzle having corrosion resistance to steel of high oxygen content or type of steel treated with calcium, and capable of preventing adheres and deposits of molten steel and oxide inclusions on the nozzle inner wall, in which at least a part of its portion contacting with molten steel is composed of a refractory material containing 50 wt. % or more of a principal component including one or more types of magnesia, alumina, spinel, zirconia, mullite, and silica, and also 0.3 to 15 wt. % of boron nitride, and an organic binder.
摘要:
A rod-shaped heater provided is composed of a carbon wire heating element 2 sealed in a small or large diameter quartz glass tube, a small diameter quartz glass tube portions 3a and 3b charged with compressed wire carbon members at opposite ends thereof; a sealed terminal section 10 having connection lines 11a and 11b for power supply held between the compressed wire carbon members charged in the small diameter quartz glass tube. The connection lines and the carbon wire heating element are electrically connected by way of the wire carbon members. This rod-shaped heater using the carbon wire heating element is suitable for readily raising the temperature of the agent in the storage tank of the wet etching agent or the grinding agent.
摘要:
An apparatus for reduced-pressure gaseous phase epitaxial growth by suppressing contamination upon the machine parts constituting the rotary mechanical portion and suppressing contamination upon the semiconductor wafer by maintaining the pressure in the rotary mechanical portion to lie within a particular range, and a method of controlling the above apparatus. The apparatus comprises a purging gas introduction pipe 6 for purging the interior of the rotary mechanical portion, a purging gas exhaust pipe 7 for exhausting the gas introduced through the purging gas introduction pipe, a pressure adjusting valve 41 provided in the purging gas exhaust pipe, a pressure gauge 21 for detecting the pressure in the rotary mechanical portion, and an arithmetic/control unit 31 for executing an arithmetic operation based upon the detected pressure and for controlling the opening degree of the pressure adjusting valve 41 provided in the purging gas exhaust pipe, so that the pressure in the rotary mechanical portion assumes a proper value.
摘要:
It is provided that a reflection plate of semiconductor heat treatment, which is resistant to cracks or deformations by controlling the adsorption of foreign materials and the production of reaction. Said reflection plate 1 for semiconductor heat treatment is composed of a disk-shaped or ring-shaped plate of optically transmissible material and a plate 2 of inorganic material hermetically enclosed in said disk-shaped or ring-shaped plate, in which said plate of inorganic material has at least one side in contact with said plate of optically transmissible material, said at least one side 2a having a surface roughness of Ra 0.1 to 10.0 nullm, said at least one side 2a formed grooves 2c therein.