307results about How to "High operating temperature" patented technology

A CF8C type stainless steel alloy and articles formed therefrom containing about 18.0 weight percent to about 22.0 weight percent chromium and 11.0 weight percent to about 14.0 weight percent nickel; from about 0.05 weight percent to about 0.15 weight percent carbon; from about 2.0 weight percent to about 10.0 weight percent manganese; and from about 0.3 weight percent to about 1.5 weight percent niobium. The present alloys further include less than 0.15 weight percent sulfur which provides high temperature strength both in the matrix and at the grain boundaries without reducing ductility due to cracking along boundaries with continuous or nearly-continuous carbides. The disclosed alloys also have increased nitrogen solubility thereby enhancing strength at all temperatures because nitride precipitates or nitrogen porosity during casting are not observed. The solubility of nitrogen is dramatically enhanced by the presence of manganese, which also retains or improves the solubility of carbon thereby providing additional solid solution strengthening due to the presence of manganese and nitrogen, and combined carbon.

An article made of constituent elements is prepared by furnishing at least one nonmetallic precursor compound, wherein all of the nonmetallic precursor compounds collectively contain the constituent elements. The constituent elements include a titanium-base metallic composition, boron present at a level greater than its room-temperature solid solubility limit, and, optionally, a stable-oxide-forming additive element present at a level greater than its room-temperature solid solubility limit. The precursor compounds are chemically reduced to produce a material comprising a titanium-base metallic composition having titanium boride particles therein, without melting the titanium-base metallic composition. The titanium-base metallic composition having the titanium boride particles therein is consolidated without melting.

A two-junction solar cell has a bottom solar cell junction of crystalline silicon, and a top solar cell junction of gallium phosphide. A three (or more) junction solar cell has bottom solar cell junctions of silicon, and a top solar cell junction of gallium phosphide. The resulting solar cells exhibit improved extended temperature operation.

The invention aims to prevent the disadvantages of printed circuit board transformers with respect to their quality and safety, in particular in a performance range of greater than 150 VA with output voltages of less than 12 V. This is achieved by a planar transformer comprising a ferrite core (1a, 1b, 21a, 21b), at least one primary coil and at least one secondary coil, which can be connected on a printed circuit board and a coil body (3, 23), which encompasses part of the ferrite core (1a, 1b, 21a, 21b) and carries at least one secondary coil. According to the invention, each of the secondary coils (3, 23) carried by the coil body is configured from at least one winding metal sheet (2, 22), which is open on one side and can be plugged into the coil body (3, 23) and connected to the printed circuit board.

The present invention is directed to a process for manufacturing a carbonaceous sorbent, particularly activated carbon, that uses lower average residence times and / or higher operating temperatures to produce activated carbon having favorable properties for mercury collection.

A semiconductor light emitting device including a light emitting layer disposed between an n-type region and a p-type region and contacts electrically connected to the n-type region and the p-type region is connected to a mount. A metal layer arbitrarily patterned to cover at least 20% of the area of the semiconductor light emitting device is plated on either a metal layer formed on the mount or a metal layer formed on one of the contacts. The plated metal layer may replace other known interconnecting techniques such as stud bumps. The semiconductor light emitting device is physically connected to the mount by causing interdiffusion between the contact surfaces of the metal layers. In some embodiments, a layer of solder is formed over the plated metal layer, and then the semiconductor light emitting device is physically connected to the mount by heating the solder.

A method for forming a ceramic matrix composite (CMC) component for gas turbine engines. The method contemplates replacing a plurality of plies with insert material. The insert material can be partially cured or pre-cured and applied in place of a plurality of small plies or it may be inserted into cavities of a component in the form of a paste or a ply. The insert material is isotropic, being formed of a combination of matrix material and chopped fibers, tow, cut plies or combinations thereof. The use of the insert material allows for features such as thin edges with thicknesses of less than about 0.030 inches and small radii such as found in corners. The CMC components of the present invention replace small ply inserts cut to size to fit into areas of contour change or thickness change, and replace the small ply inserts with a fabricated single piece discontinuously reinforced composite insert, resulting in fewer defects, such as wrinkles, and better dimensional control.

A gas turbine engine component having opposed surfaces in frictional contact with each other. An antifriction coating is disposed on one or more of the opposed surfaces. The antifriction coating includes a binder and a friction modifier. The weight ratio of the friction modifier to binder in the antifriction coating is greater than or equal to about 1:1.

In order to provide a sealing arrangement for a fuel cell stack, which comprises a plurality of fuel cell units, which are arranged consecutively in a stacking direction, wherein the sealing arrangement has an electrical insulation effect, and which also has an adequate electrical insulation effect and an adequate mechanical strength at a high operating temperature of the fuel cell stack, it is proposed that the sealing arrangement comprises at least one ceramic-metal layer formed from a mixture of a ceramic material and a metal material.

The present invention is an electrolyte membrane comprising an acid and a basic polymer, where the acid is a low-volatile acid that is fluorinated and is either oligomeric or non-polymeric, and where the basic polymer is protonated by the acid and is stable to hydrolysis.

The invention relates to a method for purifying coal tar pitch, which is characterized in that the method comprises the following steps: using mid-temperature coal tar pitch or coal tar maltha as a raw material, and using a mixed solvent consisting of arene from coking and coal oil or light diesel fuel from petrifaction to perform sufficient mixing and dissolving at certain temperature; performing centrifugal separation to remove the residue, and distilling the obtained clear solution to remove and reclaim the solvent so as to obtain the purified pitch with the content of quinoline undissolved substances of between 0.01 and 0.04 percent. The method has the advantages of simple process, low production cost, high separation efficiency and lower QI content; besides, the purified pitch can completely meet the requirements on producing the products of needle coke, carbon fiber and the like.

A portable rest device for a laptop computer is made of a thermally-conductive material, and comprises a top face for receiving the laptop computer and a bottom heat-dissipating three-dimensional pattern. Due to this design, the portable rest device dissipates 1) the heat generated by the laptop computer and captured by the top face, and 2) the heat generated by the user when the bottom heat-dissipating three-dimensional pattern is disposed on the user's lap.

This invention relates in part to thermal barrier coating systems that comprise at least one metallic or metallic / ceramic inner layer deposited onto a substrate, at least one ceramic intermediate layer deposited onto the inner layer, and at least one ceramic outer layer deposited onto the intermediate layer. The ceramic intermediate layer is a thermally sprayed coating having a plurality of macrocracks distributed throughout the intermediate layer. The ceramic outer layer is a thermally sprayed coating made from composite ceramic powder particles that include a zirconia-based component and an (alumina+silica)-based component. The ceramic outer layer is substantially free of macrocracks. This invention also relates in part to methods of forming thermal barrier coating systems, and articles coated with thermal barrier coating systems. The thermal barrier coating systems are suitable for protecting components exposed to high temperature environments, such as the thermal environment of a gas turbine engine.

A cooling device is applied to cooling an electronic element producing concentrated heat in a case where the electronic element is housed in a portable electronic device such as a notebook PC. The cooling device is provided with an active heat transport element provided with a heat intake portion and a heat outlet portion, which conducts heat from the heat intake portion to the heat outlet portion, a first flow channel disposed upstream of the electronic element in flow of the cooling medium, a second flow channel disposed downstream of the electronic element in the flow of the cooling medium. The heat is by-passed by means of the active heat transport element so that the electronic element is exposed to flow of the cooled cooling medium and effectively cooled thereby.

A case hardened gear steel having enhanced core fracture toughness includes by weight percent about 16.3Co, 7.5Ni, 3.5Cr, 1.75Mo, 0.2W, 0.11C, 0.03Ti, and 0.02V and the balance Fe, characterized as a predominantly lath martensitic microstructure essentially free of topologically close-packed (TCP) phases and carburized to include fine M2C carbides to provide a case hardness of at least about 62 HRC and a core toughness of at least about 50 ksi√in.

A method of growing and fabricating a group IV-VI semiconductor structure, for use in fabricating devices. In one embodiment, the group IV-VI semiconductor structure produced by the method of the present invention includes a group IV-VI material grown on a selected orientation of [110]. The devices fabricated can be a laser, detector, solar cell, thermal electrical cooling devices, etc. A laser device produced according to the present method will have a low threshold due to the lift-off of the energy degeneracy and low defect density. Growth on the [110] orientation also allows epitaxial growth of the semiconductor structure on a dissimilar substrate, which could improve the thermal dissipation and thus increase the operating temperature of the laser device.

A system for measuring average temperature including a plurality of measurement thermocouples (10,12,14) connected in parallel to measurement apparatus (24) by two signal wires (22) of a material different to that of the measurement thermocouples (10,12,14). Compensation thermocouples (26,28,30) are located at the cold junctions (16,18,20) of the measurement thermocouples (10,12,14) and connected to the measurement apparatus (24).

A suction modulation valve is throttled when conditions in a refrigerant system indicate that an undesirable amount of liquid refrigerant might otherwise be delivered to the compressor. As an example, the throttling would occur at start-up, among other conditions. Throttling the suction modulation valve reduces the amount of refrigerant reaching the compressor and thus ensures that any liquid refrigerant would be likely “boiled off” before raising any problems in the compressor. Other control steps can also be performed to alleviate flooded compressor operation with liquid refrigerant. Such steps, for example, can consist of: actuating heaters, discharge valve throttling, by-passing refrigerant from intermediate compression point back to suction, controlling the speed of the condenser fan can be performed independently or in combination including the suction modulation valve throttling.

The invention relates to gas turbine engine seal systems having a rotating member with an abrasive tip surface disposed in rub relationship to a stationary seal member with an abradable surface. The abrasive tip surface is coated with a metallic alloy matrix having ceramic abrasive particles embedded in and projecting from the matrix. The abradable seal surface is coated with a ceramic coating. The rub relationship affords a tight operating clearance between the rotating member and the stationary seal member, thereby improving engine efficiency, reducing fuel consumption and minimizing overhaul downtime.

The invention relates to a proton exchange membrane of fuel cells which can be used at medium temperature, which is a proton exchange membrane doped with sulfonated phenyl zirconium phosphonic acid. The proton exchange membrane is characterized in that the membrane preparing materials consist of sulfonated high molecular material and sulfonated phenyl zirconium phosphonic acid salts, wherein, the degree of sulfonation of sulfonated high molecular material selects 20 percent to 85 percent and accounts for 60 percent to 95 percent of the weight percentage of the membrane preparing material; and the degree of sulfonation of sulfonated phenyl zirconium phosphonic acid salts selects 30 percent to 90 percent accounts for 5 percent to 40 percent of the weight percentage of the membrane preparing material. Porous supporting materials can also be added into the membrane so as to improve strength of the membrane and reduce the deformability. The membrane preparing materials fill pores with the porous supporting materials and form a layer of membrane at the outer surface of the porous supporting materials. The invention is applicable to medium-temperature alcohol fuel cells so as to improve operating temperature of the fuel cells and improve the performance of the fuel cells.

The invention discloses a separating method and corresponding equipment of low-carbon olefins beneficial to product recovery. The separating method comprises the steps of: pretreating and delivering oxygenated chemical-converted low-carbon olefin flow into a depropanization system, cooling and delivering top products of the depropanization system into a demethanizing tower, cooling the top of the demethanizing tower only with a propylene refrigerant, delivering vapor phase at the tower top into a pressure swing adsorption device for recovering ethylene, returning the recovered crude ethylene gas back before a segment of compressor to be mixed with low-carbon olefin reaction gas flow, so that a copious cooling cold box and an ethylene refrigeration compressor are omitted, and the fixed investment and energy consumption can be reduced. Compared with the prior art, the separating method and corresponding equipment have the advantages of being low in separating energy consumption, high in material recovery rate, small in influence on the following ethylene and propylene separation, and the like.

A high temperature ball valve seal is disclosed that achieves Class IV shutoff for operating temperatures above 550 degrees F. The ball valve seal includes a C-seal positioned between a main seal and a seal housing to prevent fluid from flowing through a secondary flowpath when the ball valve is in a closed position.

The invention relates to a guide vane ring (10) with at least one guide vane ring segment for a turbomachine, including a plurality of guide vanes (12) arranged radially around an axis of rotation, an outer shroud (14) arranged radially on the outer side of the guide vanes (12), and an inner shroud (16) arranged radially on the inner side of the guide vanes (12), wherein the outer shroud (14) or the inner shroud (16) has at least one expansion joint (18), wherein the guide vane ring segment is formed in one piece with the guide vanes (12), the outer shroud (14), and the inner shroud (16) and the at least one expansion joint (18) is sealed in each case by at least one sealing device (24) arranged in the respective expansion joint (18).

LED chips and packages are disclosed having lenses made of materials that resist degradation at higher operation temperatures and humidity, and methods of fabricating the same. The lenses can be made of certain materials that can withstand high temperatures and high humidity, with the lenses mounted to the LED prior to certain critical metallization steps. This helps avoid damage to the metalized part that might occur as a result of the high mounting or bonding temperature for the lens. One embodiment of an LED chip comprises a flip-chip LED and a lens mounted to the topmost surface of the flip-chip LED. Lenses can be bonded to LEDs at the wafer level or at the chip level. The lens comprises a non-polymer material and the LED chip is characterized as having substantially no polymer materials in contact with the LED chip.

The present invention provides solid oxide fuel cells, solid oxide electrolyzer cells, solid oxide sensors, components of any of the foregoing, and methods of making and using the same. In some embodiments, a solid oxide fuel cell comprises an air electrode (or cathode), a fuel electrode (or anode), an electrolyte interposed between the air electrode and the fuel electrode, and at least one electrode-electrolyte transition layer. Other embodiments provide novel methods of producing nano-scale films and / or surface modifications comprising one or more metal oxides to form ultra-thin (yet fully-dense) electrolyte layers and electrode coatings. Such layers and coatings may provide greater ionic conductivity and increased operating efficiency, which may lead to lower manufacturing costs, less-expensive materials, lower operating temperatures, smaller-sized fuel cells, electrolyzer cells, and sensors, and a greater number of applications.

The invention discloses an energy-saving water-saving organic silicon monomer rectifying method which adopts a cis cleavage multi-tower flow. In the rectifying method, the tower top material steam of a high-boiling component removing tower firstly enters a main distribution manifold, then heat is respectively supplied for tower bottom reboilers of a low-boiling component removing tower, a light component removing tower, a hydrogenous tower, an azeotropic tower, a trimethylchlorosilane separating tower, a methyl trichloro silicane separating tower and a dimethyldichlorosilane separating tower through the main distribution manifold, the tower top material steam of the high-boiling component removing tower after heat supply is condensed into liquid, is then cooled to the reflux temperature through an air cooler and enters a tower top reflux tank of the high-boiling component removing tower, a second reboiler is connected with the tower bottom of the dimethyldichlorosilane separating tower, and vapor is adopted for the heat exchange of the reboiler. By adopting the method, because the operating pressure and the operating temperature of the high-boiling component removing tower and the methyl trichloro silicane separating tower with larger cooling quantity requirements are increased, at least two towers in the flow have the condition of adopting air cooling, thereby reducing the circulating water quantity and decreasing the evaporation loss; and the energy-saving water-saving organic silicon monomer rectifying method has strong operation controllability, flexible mode, multiple control means, smaller pressure increasing amplitude and high operation security.