3646results about How to "Reduce internal stress" patented technology

A light emitting device has: a light emitting element; a lead that is electrically connected to the light emitting element at its one end and serves as a terminal to supply a power source to the light emitting element; a metal base that the light emitting element is mounted thereon and radiates heat of the light emitting element; and a sealing member that is of transparent resin or glass and covers the light emitting element. The lead is secured to the metal base by a heat-resisting insulating member with a thermal expansion coefficient nearly equal to that of the metal base.

In-vivo biodegradable medical implants, containing at least in part at least partially fine-grained metallic materials that are strong, tough, stiff and lightweight, are disclosed The in-vivo biodegradable implants are used in a number of stent applications, for fracture fixation, sutures and the like. The in-vivo biodegradable medical implants enable the reduction of implant size and weight and consequently result in reducing the release of implant degradation products into the body

The invention belongs to the field of building materials, relates to a use of a nano-material in a building exterior wall heat-retaining system and provides a nano-material-containing high-strength high-heat insulation exterior wall inorganic heat-retaining face brick. The nano-material-containing high-strength high-heat insulation exterior wall inorganic heat-retaining face brick is characterized in that nano-particles are used so that compressive strength, tensile strength and bonding strength are improved. The nano-material-containing high-strength high-heat insulation exterior wall inorganic heat-retaining face brick is prepared by adding a nano-material having a nanoscale particle size into a mixed system of cement, an auxiliary gel material, a polymer binder, an inorganic light heat-retaining material, fibers and water, uniformly mixing, carrying out pressing molding of the mixture, carrying out organic polymer crosslinking and cement hydration drying, and carrying out waterproof layer coating. The nano-material-containing high-strength high-heat insulation exterior wall inorganic heat-retaining face brick has the advantages of excellent flame resistance, high compressive strength, high tensile strength, high bonding strength and good insulation effects.

A leadless plastic chip carrier has a plurality of die attach pads on which a singulated semi-conductor die is mounted. At least one row of contact pads circumscribes the plurality of die attach pads and a power/ground ring is intermediate the contact pads and the die attach pads. Wire bonds connect the semiconductor die, the contact pads and the power/ground ring. An overmold covers the semi-conductor die, the die attach pads, the power/ground ring and the contact pads such that each of the die attach pads and the contact pads has one exposed surface.

A casting method, rather than injection molding, to produce polymer optical components and systems is provided. The casting process controls shrinkage and stress, thus providing both high bulk uniformity and high quality, accurate surfaces, by incorporating polymer films into the mold. The films may remain incorporated into the part or may optionally be removed from the part after removal from the mold. In addition, the incorporation of separately produced components within the cast part is also provided, eliminating post-casting assembly manufacturing steps.

The invention relates to environmental-friendly waterproof polymer mortar, which comprises the following components in portion by weight: 50 to 230 portions of low-clinker silicate cement, 200 to 450 portions of quartz sand, 80 to 120 portions of fly ash, 1 to 18 portions of re-dispersible polyethylene vinyl acetate latex powder, 1 to 10 portions of dispersible polyvinyl acetate vinyl versatate latex powder, 0.2 to 0.6 portion of water reducing agent, 0.05 to 0.3 portion of antifoaming agent, and 0.25 to 2.25 portions of polypropylene fibers. A gel material prepared from steel slag, tailings and the fly ash replaces silicate cement and partial aggregate in the prior mortar; the modified waterproof polymer mortar has the advantages of excellent impermeability, good mechanical property and construction property, simple production technology, and easy manufacture, greatly consumes industrial and mining wastes, controls the ecological environment, and lowers the cost; and the product has reliable quality and wide market; and the environmental-friendly waterproof polymer mortar can be popularized and applied in large area.

In order to provide a semiconductor device that includes a conductive layer on one surface of a semiconductor substrate with an insulating layer therebetween, a bump on the other surface of the semiconductor substrate, and a through-electrode through the semiconductor substrate connecting the conductive layer with the bump, a through-hole is formed from the other surface of the semiconductor substrate to be connected to the conductive layer, a seed metal film is formed on the through-hole and the other surface, a photoresist is formed thereon, a mask layer is formed by processing the photoresist with a pattern larger than the through-hole, a plated film is grown by electrolytic plating so as to integrally form the through-electrode and a part of the bump.

A method and apparatus for treating a selected region of a metal layer, used to form a metal card, by annealing the selected metal region so the selected region becomes soft and ductile, while the rest of the metal layer remains stiff. The softened, ductile, selected metal region can be embossed with reduced power and with reduced wear and tear on the embossing equipment. Alternatively, the annealed metal layer can undergo additional processing steps to form an assembly which can then be embossed. The method may include the use of a fixture for holding the metal layer, with the fixture having a window region for enabling heat to be applied to soften the region of the metal layer within the window region. The fixture includes apparatus for cooling the portion of the metal layer outside of the window region and for preventing the temperature of the metal layer outside the window region from rising above predetermined limits.

A top-emission organic electro-luminescent display (OLED) has a substrate with at least a anode layer, an organic fluorescent film, at least a cathode layer, a barrier layer and a protection layer. A transparent sealing structure is glued to the top of the substrate. Wherein, the transparent sealing structure has an adhesion layer glued to the protection layer, a plurality of organic resin layers formed on the adhesion layer, a plurality of inorganic barrier layers disposed between the organic resin layers, a flexible polymer film formed on the organic resin layer, and a hard coat formed on the flexible polymer film.

A dry-type, resin-encapsulated transformer coil that includes multiple layers formed from a length of conductive material, and multiple cooling ducts that are formed of thermoplastic material and spaced between the layers of conductive material. The thermoplastic material forming the cooling ducts and the resin that encapsulates the multiple layers of conductive material are thermally and electrically compatible.

The invention relates to a novel titanium substrate lead dioxide electrode and a preparation method thereof, which belong to the field of water treatment technology application. The titanium substrate lead dioxide electrode adopts titanium material as a carrier; after the titanium substrate undergoes acid etching, pyrolytic process is adopted to plate a tin-stibium oxide bottom layer; alkaline solution is then used for electroplating an alpha-PbO2 intermediate layer; acidic composite electroplating solution is used for preparing a fluorine-containing beta-PbO2 surface layer doped with an active metal (such as bismuth, nickel, lanthanum, cerium and erbium) and a particle with high absorption performance (such as powdered activated carbon and chitosan), thus obtaining a novel titanium substrate lead dioxide electrode. The titanium substrate lead dioxide electrode prepared by the method has low cost and long service life. Using the electrode as an anode and applying certain applied voltage can realize efficient removal and mineralization to the organic contaminants in the water. With simple operation and convenient management, the method is applicable to small-scale and dispersible wastewater and feed water treatment.

The invention discloses a special castable for a kiln outlet, which belongs to the field of refractory materials. According to the invention, the special castable comprises the following components in percentage by weight: 8-25% of silicon carbide, 10-30% of andalusite, 20-35% of corundum, 5-15% of spinel powder, 5-10% of zircon mullite powder, 1-5% of zirconium diboride, 1-5% of silicon nitride,5-15% of alumina micropowder, 3-6% of pure calcium aluminate cement, 0.5-1% of explosion-proof fiber and 0.06-0.2% of sodium tripolyphosphate, which is an additive. By using the special castable for the kiln outlet, disclosed by the invention, the phenomenon of poor wear resistance, block falling and the like in the kiln outlet can be effectively improved; the service life of the cement kiln outlet can be largely prolonged; and the special castable for the kiln outlet, disclosed by the invention, has the advantages of high temperature resistance, heat shock resistance, wear resistance, high strength, irreversible micro expansion and the like.

A component for a vacuum deposition apparatus comprises a component body and a spray deposit formed on a surface of a component body. A spray deposit has surface roughness in which a mean spacing S of tops of local peak of profile is in the range from 50 to 150 μm, and distances to a bottom of profile valley line Rv and to a top of profile peak line are in the ranges from 20 to 70 μm, respectively. Furthermore, a spray deposit has a low hardness coat selected from an Al base spray deposit of Hv 30 (Vickers hardness) or less, a Cu base spray deposit of Hv 100 or less, a Ni base spray deposit of Hv 200 or less, a Ti base spray deposit of Hv 300 or less, a Mo base spray deposit of Hv 300 or less and a W base spray deposit of Hv 500 or less. Such component for a vacuum deposition apparatus may suppress, with stability and effectiveness, peeling of deposition material adhering on a component during deposition. In addition, the number of apparatus cleaning and of exchange of components may be largely reduced. A target comprises a similar spray deposit. A vacuum deposition apparatus is one in which above component for a vacuum deposition apparatus is applied in a holder of a sample to be deposited, a deposition material source holder, a preventive component and so on.

The invention discloses a construction method for an interior partition wall. The construction of the partition wall is characterized by comprising the following steps: erecting templates at both sides of a wall body, and fixing the templates by using outside removable keels; and then casting light aggregate concrete or manufactured-in-place aerated concrete in the templates so as to cast the wall body into an complete whole, wherein the permanent templates can be made of thistle boards, plastic boards, cement boards or insulation boards; the casting of the light aggregate concrete is transferred by a booster pump; and the casting of the concrete can be started from the lower part, middle part or the upper part of the wall body until the concrete is spread all over the whole wall body. The wall body constructed by using the method meets the requirements of light weight, sound insulation and heat insulation for the traditional partition wall, and simultaneously, the common quality problems of plastering, wall surface cracking and poor earthquake resistance in the construction of the traditional partition wall are avoided or reduced because of the one-piece casting. Meanwhile, by erecting the permanent templates in the construction of the wall body, the molded wall surface is smooth and level, and the floated coat construction is omitted, thereby greatly raising the construction speed of the wall body, and lowering the construction cost.

A composite substrate capable of suppressing a deformation of the substrate in response to the influence of internal stress of a conductive film is provided. When a conductive film is formed on a substrate, the conductive film is formed so as to have a laminated structure including a main conductive film which has a tensile stress FT as its internal stress F1 and a sub-conductive film which has a compressive stress FC as its internal stress F2. In this manner, the tensile stress FT of the main conductive film is offset by use of the compressive stress FC of the sub-conductive film. Thereby, unlike the case where the conductive film is formed so that only the main conductive film may be included without including the sub-conductive film, the substrate becomes less deformable in response to the influence of the internal stress F of the conductive film.

A compound welding method by using semiconductor laser and CO2 laser comprises the steps: using a semiconductor laser and a CO2 laser to be positioned on one side of a welding line of welded metals in a certain angle, adjusting a focusing position of the CO2 laser to cause a light spot of the CO2 laser to be positioned in the light spot of the semiconductor laser so that the welding direction is consistent with the slow axis direction of the semiconductor laser; using the semiconductor laser to pre-heat the welded metals, heating the part to be welded entering into the light spot of the semiconductor laser to 200-400 DEG C, using the CO2 laser to weld, and performing a post-welding thermal treatment to the welded metals by using the semiconductor laser for the welded parts of the welded metals welded by the welding of the CO2 laser. Due to synchronous pre-heating and post-heating treatments to the welding process, the invention can effectively solve the problem of cold cracking in high-strength steel welding and improve the quality of high-strength steel laser welding.

The present invention discloses a TiAlN/TiAlCN multilayer coating of substrate surface and preparing method thereof, wherein a transitional layer is between a substrate and a TiAlN/TiAlCN multilayer coating; the multilayer coating is formed by alternating periodic arrangement of TiAlN films and TiAlCN films; in a period, the thickness sum of the TiAlN films and the TiAlCN films is 1-20 nano; the percentage by weight of C atom in the TiAlCN films is 0.1-5%. The multilayer coating of the present invention has the advantages of high hardness, low internal stress and high tenacity; the cutting efficiency and corrosion resistance of the substrate can be improved, and the service life of the substrate can be prolonged. In the present invention, the multilayer coating is deposited by high power pulse magnetron sputtering technique; the problems that cathode arc ion plating and depositing speed is too fast to prepare a nano epitaxial film and that target poisoning is caused during the procedure for preparing films by DC magnetron sputtering are solved; the nano modulation period is controlled via adjusting the autorotation and revolution speeds of the substrate and adjusting the quantity of targets.