39results about How to "Less oxygen" patented technology

The scintillator single crystal of the invention is a specific cerium-activated silicate single crystal wherein the total content of one or more elements selected from the group consisting of elements belonging to Groups 4, 5, 6 and Groups 14, 15, 16 of the Periodic Table is no greater than 0.002 wt % based on the total weight of the single crystal.

A magnetic head has less variations in the resistance of a magneto-resistive device before and after the magnetic head is left in a high temperature environment so as to have higher stability of the characteristics of the magnetic head against a high temperature environment. A TMR device includes a tunnel barrier layer made of an oxide layer. A DLC film serving as a protection film and an underlying layer therefor are formed on an end face of the TMR device on an air bearing surface side. A layer made of an oxide of a metal or an oxide of a semiconductor is formed between the underlying layer and the end face of the tunnel barrier layer on the air bearing surface side to be in contact with the end face of the tunnel barrier layer.

An emergency oxygen supply system for use on aircraft in the event of a loss in cabin pressure is configured for delivering allotments of oxygen and timing the delivery such allotments to each passenger so as maximize the efficiency of the transfer of such oxygen into the passenger's bloodstream. The delivery of each allotment is selected so that the entire allotment is available for inhalation into the region of the lung most efficient at oxygen transfer while the volume of the allotment is selected to substantially coincide with the volume of such region of the lung.

A method and apparatus are provided for removing oxygen and moisture from a gas such that wafers subsequently exposed to the gas develop less haze. The apparatus includes a process chamber for receiving a wafer. The apparatus also includes a gettering filter in fluid communication with the process chamber for removing oxygen from a gas that passes through the gettering filter in route to the process chamber. The gettering filter includes a vessel and a plurality of pieces of an oxidizable material disposed within the vessel. The oxidizable material is selected to oxidize upon exposure to oxygen in the gas such that the gas exiting the vessel has less oxygen than the gas entering the vessel. The oxidizable material may also be selected such that the resulting oxide layer is etchable upon exposure to an etchant, thereby permitting the gettering filter to be regenerated.

A combined gasification and electric power generation method wherein between 30.0 and 60.0 percent of the compressed air required by an air separation unit supplying oxygen to a gasifier and nitrogen to gas turbine(s) is extracted from a compressor of the gas turbine(s). An installation, including the gas turbine(s), the air separation unit, a gasifier and a gas conditioning system for producing gas turbine fuel, has a design point of ambient temperature and pressure and net power output for producing the electric power required by a captive user. The gas turbine(s), at the design point, have a capacity to compress air from the compressor thereof, at a rate between 4.8 and 6.0 times the total molar flow rate of air required by the air separation unit and the compressor of the gas turbine(s) is operated at no less than 90.0 percent of its capacity at the design point.

An emergency oxygen system is provided for aircraft passengers. The system includes at least one oxygen mask (2), with a sensor (4) for detecting at least one breathing characteristic value of a passenger using this oxygen mask (2). A control unit (10) individually determines the oxygen requirement of the passenger on account of the detected breathing characteristic value. A dosing device (8) is actuated by the control unit (10). The dosing device (8) supplies an oxygen quantity corresponding to the determined oxygen requirement, to the oxygen mask (2).

The invention discloses a Gr.9 tube billet manufacturing process, including forging, peeling, drilling and extrusion piercing, wherein the steps of extrusion piercing are: blank preparation, drilling, sheathing, heating and extrusion. The surface of the tube blank is completely covered with copper plates, so that the tube blank absorbs very little oxygen and hydrogen, and the size of the tube blank and the size of the finished tube can be controlled at the most appropriate ratio, reducing the number of processing passes. The amount of deformation is large, and the grains are more fully broken. Compared with the cross-rolling piercing, the deformation of each part is more uniform, which makes the metal plasticity better and is more conducive to processing. There is almost no surface oxidation, and the surface treatment is reduced to improve the product yield.

The present invention relates to preparative technique for automobile air valve and parts of similar shape, specifically speaking, the present invention is a semi-continuous method for preparing TiA1-based alloy automobile air valve and parts of similar shape. The present invention adopts the method of vacuum pouring after semi-continuous induction melting in a vacuum pouring furnace: take the spongy titanium, industrial pure aluminum and other alloy elements as the raw materials and adopt a CaO formed ceramic pot for vacuum induction melting; the cast shell mold consists of part mold shell such as air valve, etc., intermediate flow trays and a vacuum pouring pipe; the intermediate flow trays are evenly distributed in the lengthwise direction of the air valve part; the technique parameters of the vacuum pouring are that the shell mold temperature is between 50 to 800 Celsius degrees and the vacuum pouring pressure difference is2.0 multiplied by 104-7.0 multiplied by 104Pa. The present invention can semi-continuously produce parts which have complicated shapes and are hard to be formed with high-melting point, high-activity Ti A1-based materials and the cost is low; in addition, the produced automobile air valve boasts of excellent internal quality and stable casting performance.

The invention belongs to the field of polymer binder materials and powder metallurgy, and particularly relates to a titanium alloy powder injection molding special material and a preparation method thereof. Only surface modification of coarse titanium or titanium alloy powder is required, a simple layer-by-layer self-assembling technology is adopted, titanium dioxide particles and a polyelectrolyte are led into the surfaces of existing coarse titanium or titanium alloy powder particles, and accordingly coarse titanium or titanium alloy powder particles of a core-shell structure can be obtained by means of preparation; and then a titanium alloy product which is low in cost, shrinking percentage and sintering density and is of a porous structure can be prepared by mixing with a polymer binder, powder injection molding, catalytic debinding and vacuum sintering.

The present invention provides a novel process for synthesis of a copper-alloy particle with improved grain boundary properties. The process comprises the steps of: forming a solution from an alcoholic agent and a branched dispersing agent; forming a reaction mixture with the solution and a copper precursor and optionally a nickel precursor; heating the reaction mixture; cooling the reaction mixture; adding an additional amount of copper precursor and at least one precursor selected from the group consisting of: nickel, zinc, and bismuth; heating the reaction mixture; and maintaining the reaction mixture for a time sufficient to reduce the reaction mixture to copper-alloy particles.

A magnetic head has less variations in the resistance of a magneto-resistive device before and after the magnetic head is left in a high temperature environment so as to have higher stability of the characteristics of the magnetic head against a high temperature environment. A TMR device includes a tunnel barrier layer made of an oxide layer. A DLC film serving as a protection film and an underlying layer therefor are formed on an end face of the TMR device on an air bearing surface side. A layer made of an oxide of a metal or an oxide of a semiconductor is formed between the underlying layer and the end face of the tunnel barrier layer on the air bearing surface side to be in contact with the end face of the tunnel barrier layer.

Pyrolysis methods for disassociating an organic mass, or coating from an article, by placing the article in an air tight processing chamber, circulating a gaseous mixture of ambient air and at least 40% water vapor from an opening, through the processing chamber and out of an exhaust port, and maintaining the processing chamber at a temperature above 650 degrees Fahrenheit for a sufficient time to disassociate the organic material. A batch oven and a continuous processing oven including entrance and exit air closures that utilize the pyrolysis methods are described.

A process of forming a thin film photoactive layer of an optoelectronic device comprising: providing a substrate having a surface comprising or coated with a metal M selected from at least one of Pb, Sn, Ge, Si, Ti, Bi, or In; and converting the metal surface or metal coating of the substrate to a perovskite layer.

The invention relates to a technology for preparing a TiNi-based shape memory alloy sheet, in particular to a method for preparing a low-nickel binary TiNi and ternary TiNiHf shape memory alloy sheet.The technology takes titanium sponge, electrolytic nickel and a hafnium sheet as raw materials, and adopts a ceramic crucible which is formed by CaO to carry out vacuum induction melting, and the power frequency for melting is controlled to between 2,000 and 5,000 Hz and the superheat degree of an alloy liquid is controlled to between 50 and 180 DEG C under the condition of casting; static liquidforging press is adopted for modification of cast ingot tissues; forged ingots are slivered along the vertical direction from the intermediate part, and forged cracks caused by secondary hole shrinkage are completely eliminated; the forged ingots after elimination of the surface defects are forged at a temperature of between 840 and 900 DEG C; and unilateral rolling is adopted. The technology cangreatly improve the finished product rate of the low-nickel binary TiNi and ternary TiNiHf shape memory alloy sheet; and the alloy sheet prepared has superior internal quality, mechanical property and stable phase transition temperature.

A process for producing a silicon single crystal is by pulling the single crystal from a silicon melt which is contained in a crucible with a diameter of at least 450 mm, above which a heat shield is arranged. The single crystal being pulled has a diameter of at least 200 mm. The silicon melt is exposed to the influence of a traveling magnetic field which exerts a substantially vertically oriented force on the melt in the region of the crucible wall. There is also an apparatus which is suitable for carrying out the process.

The invention relates to an oxygen replenishment plate of a straw gasification furnace. The layout of the oxygen replenishment plate is hollow cross, the oxygen replenishment plate is divided into five combustion zones of a left zone, a middle zone, a right zone, an upper zone and a lower zone, and the size of oxygen replenishment holes are determined according to wind speed, thereby achieving the purpose of uniform oxygen supply and further avoiding the phenomena of burning out and partial burning.

The invention provides a treatment device and method for high ammonia-nitrogen wastewater. The treatment device comprises an adjustment pool, chemical feeding units, a tank, a first container, a second container, a first separating piece, a second separating piece and an aeration module, wherein the chemical feeding units are used for adjusting the PH value of the wastewater; an opening is formed in the upper portion of the tank; the first container is arranged in the tank and located in the second container, an opening is formed in the bottom of the first container, and a separating net is arranged in the opening; padding is arranged in the first container; wastewater output by the adjustment pool is sent into the first container; the second container is arranged in the tank, an opening is formed in the bottom of the second container, and a separating net is arranged in the opening; padding is arranged in the second container; wastewater output by the adjustment pool is sent into the second container; the first separating piece and the second separating piece are arranged in the portion, outside the second container, of the tank from top to bottom; the upper portion of the first separating piece is inclined, and the horizontal distance between the first separating piece and the inner wall of the tank is decreased from top to bottom; the top end of the second separating piece is lower than the first separating piece; the second separating piece is provided with an opening; and the aeration module is arranged under the second container. The treatment device and method for the high ammonia-nitrogen wastewater have the advantages of efficient operation, good application prospects and the like.

The present invention relates to preparative technique for automobile air valve and parts of similar shape, specifically speaking, the present invention is a semi-continuous method for preparing TiA1-based alloy automobile air valve and parts of similar shape. The present invention adopts the method of vacuum pouring after semi-continuous induction melting in a vacuum pouring furnace: take the spongy titanium, industrial pure aluminum and other alloy elements as the raw materials and adopt a CaO formed ceramic pot for vacuum induction melting; the cast shell mold consists of part mold shell such as air valve, etc., intermediate flow trays and a vacuum pouring pipe; the intermediate flow trays are evenly distributed in the lengthwise direction of the air valve part; the technique parameters of the vacuum pouring are that the shell mold temperature is between 50 to 800 Celsius degrees and the vacuum pouring pressure difference is2.0 multiplied by 104-7.0 multiplied by 104Pa. The present invention can semi-continuously produce parts which have complicated shapes and are hard to be formed with high-melting point, high-activity Ti A1-based materials and the cost is low; in addition, the produced automobile air valve boasts of excellent internal quality and stable casting performance.