188results about How to "Improve material properties" patented technology

A method is provided for forming doped hafnium zirconium based films by atomic layer deposition (ALD) or plasma enhanced ALD (PEALD). The method includes disposing a substrate in a process chamber and exposing the substrate to a gas pulse containing a hafnium precursor, a gas pulse containing a zirconium precursor, and a gas pulse containing one or more dopant elements. The dopant elements may be selected from Group II, Group XIII, silicon, and rare earth elements of the Periodic Table. Sequentially after each precursor and dopant gas pulse, the substrate is exposed to a gas pulse containing an oxygen-containing gas, a nitrogen-containing gas, or an oxygen- and nitrogen-containing gas. In alternative embodiments, the hafnium and zirconium precursors may be pulsed together, and either or both may be pulsed with the dopant elements. The sequential exposing steps may be repeated to deposit a doped hafnium zirconium based film with a predetermined thickness.

The present invention relates to a method for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article, said method comprising the steps of: providing at least one electron beam source emitting an electron beam for heating and/or fusing said powder material. Controlling the electron beam source in a first mode when said formation of said three dimensional article is in a first process step. Controlling said electron beam in a second mode when said formation of said three dimensional article is in a second process step, wherein in said first mode an electron beam current from said electron beam source is controlled in a feed-forward mode and in said second mode said electron beam current is controlled in a feed-back mode.

The welding apparatus and associated method are provided. The welding apparatus includes a welding tool for forming a weld joint along the surface of at least one workpiece. The welding apparatus also includes a compression tool for selectively inducing a layer of residual compressive stress in at least a portion of the surface of the weld joint and the surface of the at least one workpiece to thereby improve the material properties of the workpiece, including corrosion resistance and fatigue strength.

Methods for producing 3D printing composite polymer materials for use in additive manufacturing processes are provided. The methods result in enhancing the material properties of the printing material by providing a uniform and smooth surface finish of the printing material and the nozzle extrudate for additive manufacturing processes, such as Fused Filament Fabrication. The method includes implementing impregnation techniques for combining carbon nanotubes or other nano-fillers, a polymer resin and a fiber material to produce a polymer material that can be processed into a printing material. Further, the method may include combining the carbon nanotubes or other nano-fillers and the polymer resin to form a masterbatch that may be further combined with the fiber material through an extrusion process. The method results in a printing material with enhanced material properties and smooth surface finish for the printing material and resulting nozzle extrudate for Fused Filament Fabrication.

In an antenna device, first linear portions of a coil conductor are located on a lower surface of a first resin sheet. Second linear portions of the coil conductor are located on an upper surface of a second resin sheet. Via conductors of the coil conductor are formed in the first and second resin sheets and intermediate resin sheets located between the first and second resin sheets. The via conductors connect a first end and a second end of the first linear portions and a first end and a second end of the second linear portions, respectively. The first and second linear portions and the via conductors define the coil conductor. Each of the intermediate resin sheets includes an aperture in the center portion thereof. The lamination of the apertures defines a cavity in which a magnetic substance core is embedded. The coil conductor is wound around a periphery of the cavity.

The invention discloses a laminating base plate for boring and a preparing method thereof. The preparing method comprises the step that the laminating base plate for boring is formed by laminating and pressing surface paper and inside paper, wherein the surface paper is formed by soaking wood pulp paper with phenolic resin and the inside paper is formed by soaking brown paper soaked with urea resin or modified urea resin. The surface paper used by the base plate for boring and having well waterproofness can prevent the warping abnormity of the base plate caused by the temperature and humidity change of the environment and the flatness of the base plate is ensured; in addition, chip removal is not affected due to heating and adhesion in the small-aperture boring process of the base plate and the hole wall quality of a boring hole is improved. The attribution of the material of the base plate is superior to that of the urea resin and is close to that of a phenolic aldehyde base plate, and the cost of the base plate is lower than that of the phenolic aldehyde base plate, so the laminating base plate for boring has higher competitiveness.

Components formed of blow molded thermoplastic compositions are described. The blow molded thermoplastic compositions exhibit high strength and flexibility. Methods for forming the thermoplastic compositions are also described. Formation methods include dynamic vulcanization of a composition that includes an impact modifier dispersed throughout a polyarylene sulfide. A crosslinking agent is combined with the other components of the composition following dispersal of the impact modifier. The crosslinking agent reacts with the impact modifier to form crosslinks within and among the polymer chains of the impact modifier. The compositions can exhibit excellent physical characteristics at extreme temperatures and can be used to form, e.g., tubular member such as pipes and hoses and fibers.

Dental restorative composites having self-healing capabilities to repair discontinuities in the composite are provided. Dental restorative composites according to the present invention include a microsphere that encapsulates a monomer. When a fracture occurs, the microsphere is ruptured and the monomer fills the fracture. Depending on the monomer present in the microsphere, it is polymerized by a polymerization initiator or by an olefin metathesis catalyst present in the dental restorative composite. Self-healing dental restorative composites provide increased resistance to fracturing, and thus remain substantially intact for a longer period of time, preserving the remedial integrity of the dental repair or reconstruction.

The invention is directed to a process for manufacture of fine precious metal containing particles, specifically silver-based particles and silver-based contact materials via an intermediate silver(+1)-oxide species. The process comprises in a first step the formation of a thermally instable silver (+1)-oxide species by adding a base to an aqueous silver salt solution comprising an organic dispersing agent. Due to the presence of the organic dispersing agent, the resulting silver (+1)-oxide species is thermally instable, thus the species is decomposing to metallic silver at temperature lower than 100° C. The process optionally may comprise the addition of a powdered compound selected from the group of inorganic oxides, metals, and carbon-based compounds. Furthermore the process may contain additional separating and drying steps. The process is versatile, cost efficient and environmentally friendly and is used for the manufacture of silver-based particles and electrical contact materials. Silver nanoparticles made according to the process are characterized by a narrow particle size distribution. Electrical contact materials manufactured according to the process reveal improved contact welding properties.

The invention relates to an environment-friendly coating, in particular to a biological-enzyme inner-wall environment-friendly coating which can be used for decorating the surfaces of indoor wall surfaces, ceilings, gypsum boards, and the like and can clear indoor formaldehyde, release anions and purify indoor air by biological enzymes. The preparation technology of the biological-enzyme inner-wall environment-friendly coating comprises the following steps: firstly, sequentially adding a dispersant, a wetting agent, a foam suppressor, a thickening agent and a mildewproof algaecide at a low speed; sequentially adding titanium pigment, a pH regulator, coarse whiting, calcined kaolin, talcum powder and anion fungi at a medium speed; and sequentially adding latex, a film-forming additive, an anti-freezing agent, a preservative, a foam suppressor, a flatting agent, 40 percent of biological-enzyme solution and H2O at a low speed and filtering and packaging after detecting to be qualified. The biological-enzyme inner-wall environment-friendly coating has the advantages of clearing the indoor formaldehyde, releasing the anions and purifying the air.

The present invention relates to a method for manufacture of silver-based composite powders for electrical contact materials. The invention relates also to electrical contact materials made from such composite powders.

The process comprises a high energy dispersing process of wet silver oxide (Ag₂O) with additional second oxide components in aqueous suspension. The high energy dispersing process can be conducted by high shear mixing or by high energy milling. Preferably high speed dispersing units working at rotating speeds in the range of 5,000 to 30,000 rpm or high energy mills such as attritor mills are used. The new process is versatile, economical and offers access to a broad spectrum of contact materials. The silver-based composite powders made according to the new process yield contact materials with a highly dispersed microstructures and superior material characteristics.

The invention pertains to analyte sensors designed to include layered compositions that provide these sensors with enhanced functional and/or material properties including, for example, resistance to damage caused by ethylene oxide during sterilization processes. Embodiments of the invention include polyvinyl alcohol N-methyl-4(4′-formylstyryl)pyridinium (SbQ) polymer materials and methods for employing such materials during the ethylene oxide sterilization of glucose sensors.

Provided is a method for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article in a vacuum chamber, said method comprising the steps of: providing at least one electron beam source emitting an electron beam for at least one of heating or fusing said powder material in said vacuum chamber, applying a first set of beam parameters for formation of a fused bulk material of said three-dimensional article, where said bulk material has a predetermined microstructure, applying a second set of beam parameters for formation of a top portion of said three-dimensional article, wherein said second set of beam parameters is applied a predetermined number of layers prior to reaching a top surface of said three-dimensional article for encapsulating chimney porosities into said bulk material. Associated apparatus and computer program product are also provided.

An illumination optical system is disclosed, which can achieve miniaturization by improving the characteristics of the material of the optical member. The illumination optical system according to the present invention includes a light source and an optical member disposed in a direction of irradiation of light from the light source. The optical member is made of a particle-containing material with particles having a particle size smaller than 1 μm contained in a base material made of a resin material.

The invention discloses a surface tack thermistor element, which comprises a resistor element, a first electrode, a second electrode and at least a thermally conductive insulating layer. The resistor element comprises a first conductive member, a second conductive member and high-molecular material layers, wherein the high-molecular material layers are laminated between the first conductive member and the second conductive member and have characteristics of positive temperature coefficient or negative temperature coefficient. The high-molecular material layers and the first and second conductive members extend together along a first direction to form a laminated structure. The first electrode is electrically connected with the first conductive member. The second electrode is electrically connected with the second conductive member and is electrically isolated from the first electrode. Heat conductivity of the first and second electrodes is at least 50W/mK. The thermally conductive insulating layer contains a high-molecular insulated substrate and a thermally conductive filling material and is arranged between the first electrode and the second electrode. Heat conductivity of the thermally conductive insulating layer is within 1.2W/mK-13W/mK.

The invention relates to a semi-conductor surface emitting laser and a production method and applications thereof. An active layer utilizes a strain five quantum well; a lower DBR (Distributed Bragg Reflector) layer utilizes a binary N type AlAs / GaAs pair; an upper DBR layer utilizes a DBR of a general ternary N type Al0.92Ga0.08 As/Al0.12Ga0.88As; a plurality of pairs under the active layer utilize a same structure; the top utilizes a high thermal conductive ALN (Aluminium Nitride) layer; copper layers are arranged and covered on bilateral sides of the platform surface and above the platform; the size of an oxidation hole is 18 micron; and the capacitance of components are reduced through a BCB (p-bis benzene) layer. The production method of the semi-conductor surface emitting laser has the advantages of improving an integral heat dissipation level by improving processes, effectively solving the heat dissipation problem of a large power surface emitting laser, improving an stage of the power of the surface emitting laser, enabling the surface emitting laser to be improved in material character, improving the service life and working reliability of the surface emitting laser and achieving free space communication within 1-3 km.

Embodiments of submersible composite cables include a non-composite electrically conductive core cable, a multiplicity of composite cables, including a multiplicity of composite wires, around the core cable, and an insulative sheath surrounding the composite cables. Other embodiments include an electrically conductive core cable; a multiplicity of elements selected from fluid transport, electrical power transmission, electrical signal transmission, light transmission, weight elements, buoyancy elements, filler elements, or armor elements, arranged around the core cable in at least one cylindrical layer defined about a center longitudinal axis of the core cable when viewed in a radial cross section; a multiplicity of composite wires surrounding the elements in at least one cylindrical layer about the center longitudinal axis; and an insulative sheath surrounding the composite wires. The composite wires may be metal matrix or polymer composite wires. Methods of making and using submersible composite cables are also disclosed.

Plasma Enhanced Bonding (PEB) during a coating process is used to improve both adhesion and corrosion resistance of the resulting coating. New interfacial compounds may be formed, offering the increased resistance to corrosion, as well as enhanced bonding to the workpiece being coated and any subsequently formed layer, such as diamond-like carbon. In one embodiment, the PEB processing is employed during coating of at least one interior surface of the workpiece, which may be a pipe. In a first step, a thin film is deposited. Then, the film is exposed to a high energy etch-back plasma. This two-step cycle of depositing a film and then providing bombardment of the film may be repeated a number of times. Typically, the deposition step of the cycle is much shorter than the bombardment step.

The invention relates to a bamboo fiber composition and a manufacturing method thereof. The bamboo fiber composition comprises the following components: 35 to 55 weight percent of bamboo fiber, 25 to 50 weight percent of bonding agent, 0.4 to 0.7 weight percent of curing agent, 0.4 to 0.8 weight percent of waterproof agent, 12 to 18 weight percent of starch material and 2 to 4 weight percent of water. The manufacturing method comprises the following steps: mixing bamboo raw materials with the water and stirring the mixture at a high speed to obtain a bamboo fiber; and mixing a proper proportion of the bamboo fiber, the bonding agent, the curing agent, the waterproof agent, the starch material with the water; and stirring the mixture at a high speed to obtain the bamboo fiber composition. In the steps, high-speed stirring treatment is performed to activate the material property of the bamboo fiber composition, so that the material property is good and stable, and the material has even color and luster; in addition, the activation treatment makes the composition of the bamboo fiber composition even, and endows the bamboo fiber composition with good flowability in the finished product processing process.

The invention discloses a high-wear-proof high-thermal-shock-resistant fire-proof material which comprises the following raw materials in percentage by weight: 53-67% of tabular corundum, 6-12% of white corundum powder, 5-10% of superfine aluminum oxide powder, 3-5% of superfine silica powder, 4-10% of sillimanite powder, 4-10% of andalusite powder, 3-5% of calcium aluminate cement, 6-12% of silicon carbonate powder and 2-8% of aluminum phosphate. The obtained fire-proof material has the advantages of high wear resistance and high shock resistance, and is suitable for making a prefabricated part of a furnace mouth, especially a coal falling mouth of an electric circulating fluidized bed boiler. Meanwhile, the invention further provides a structure of a prefabricated furnace mouth part to solve the problems that conventional prefabricated parts are not tightly spliced, and dust and heat can easily damage the furnace wall through seams, and the structure of the prefabricated furnace mouth part is especially suitable for making a prefabricated coal falling mouth part of the electric circulating fluidized bed boiler.

The invention relates to a Ga2O3-material-based U-shaped grating type MOSFET and a preparation method thereof. The method comprises steps: selecting a beta-Ga2O3 substrate; growing a homogeneous epitaxial layer on the surface of the beta-Ga2O3 substrate and carrying out ion implantation on the surface of the homogeneous epitaxial layer to form an N type doped region; carrying out treatment on the surface of the N type doped region by using an ion implantation process to form a P type well region; carrying out treatment on the surface of the P type well region by using an etching process to form a U-shaped groove in the beta-Ga2O3 substrate; preparing a gate dielectric layer and a gate electrode in the U-shaped groove; and preparing a source electrode on the upper surface, different from the P type well region, of the beta-Ga2O3 substrate and manufacturing a drain electrode on the lower surface of the beta-Ga2O3 substrate, thereby forming a U-shaped grating type MOSFET. According to the Ga2O3-material-based U-shaped grating type MOSFET provided by the invention, with the U-shaped grate electrode structure, a high on-resistance defect of the MOSFET power device is overcome; and the Ga2O3 material is applied to the substrate and the homogeneous epitaxial layer of the U-shaped grating structure, so that the voltage-withstanding capability and the reverse breakdown voltage of the MOSFET power device are improved; and the on resistance is reduced and the performance and device reliability of the power device are improved substantially.

Assisted magnetic forming uses a magnetic field to assist in the forming or molding of metallic and non-metallic materials. For example, such a forming process may form a blank of ferromagnetic metals like high-strength steel and high-hard armor, non-ferromagnetic metals like aluminum and magnesium, as well as non-metals like ceramics, plastics, and fiber-reinforced composites into formed or molded parts. The magnetic field is generated to partially or completely saturate the blank during the forming process, which increases the blank's formability and/or moldability while in the presence of the magnetic field.