285 results about "Interfacial reaction" patented technology

A new interconnection scheme is disclosed for a tape automated bonding (TAB) package, a flip chip package and an active matrix liquid crystal display (AMLCD) panel, where an electrically conducting adhesive is used to form an electrical interconnection between an active electronic device and its components. The electrically conducting adhesive can be a mixture comprising a polymer resin, a no-clean solder flux, a plurality of electrically conducting particles with an electrically conducting fusible coating which provides a metallurgical bond between the conducting particles as well as to the substrates. The advantages of using the electrically conducting adhesives include reduction in bonding pressure and/or bonding temperature, control of interfacial reactions, promotion of stable metallurgical bonds, enhanced reliability of the joints, and others.

A method for the formation of a membrane is described. A collection of substantially spherical particles formed from a selected material is contacted with at least one reactive material. The reactive material is cured or otherwise polymerized by various techniques, so that it forms a matrix that substantially surrounds and contains the particles. A portion of the particle material is then removed, so that the matrix contains a pattern of pores that are permeable to selected substances in solution. In some instances, the matrix is formed by an interfacial reaction between at least two reactive materials. Related filtration membranes are also described.

A method for manufacturing a non-volatile memory device having a charge trap layer comprises in one embodiment: forming a first dielectric layer over a semiconductor substrate; forming a second dielectric layer having a higher dielectric constant than that of the first dielectric layer over the first dielectric layer; forming a nitride buffer layer for preventing an interfacial reaction over the second dielectric layer; forming a third dielectric layer by supplying a radical oxidation source onto the nitride buffer layer to oxidize the nitride buffer layer, thereby forming a tunneling layer comprising the first, second, and third dielectric layers; and forming a charge trap layer, a shielding layer, and a control gate electrode layer over the tunneling layer.

The invention discloses a resource reclamation type membrane flue gas desulphurization and denitration device which comprises at least one hydrophobic hollow fiber membrane absorber. A technology of the device is as follows: nitric oxide in flue gas is firstly subjected to an oxidation reaction to generate nitrogen dioxide, and the flue gas and an alkaline absorbent respectively enter a shell side and a tube side of the hydrophobic hollow fiber membrane absorber; SO2 and NOX in the flue gas permeate membrane wall micropores and undergo a rapid interfacial reaction with the alkaline absorbent so as to realize purification of the flue gas; and the alkaline absorbent is recycled to form a high-concentration salt-making mother liquor which is processed to prepare sulfate and nitrate. According to the technology, flow velocity of gas-liquid two-phase is independently controlled, and operating range is wide; non-direct contact between the flue gas and the absorbent can avoid heavy metal in flue dust and flue gas from entering the absorbent, resource recycling of pollutants in the flue gas is realized, and a high-purity by-product with high added value is obtained; and the technological process has high degree of automation, is economic and highly efficient and causes no secondary pollution.

The invention discloses a semiconductor device and a manufacturing method thereof. The manufacturing method of the semiconductor device includes the following steps that: semiconductor fins are formed on a semiconductor substrate; interfacial oxide layers are formed on the surfaces of the tops and side walls of the semiconductor fins; high K gate dielectrics are formed on the interfacial oxide layers; first metal gate layers are formed on the high K gate dielectrics; and doping agents are implanted into the first metal gate layers through conformal doping; and annealing is performed, so that the doping agents can be diffused and accumulated at upper interfaces between the high K gate dielectrics and the first metal gate layers and lower interfaces between the high K gate dielectrics and the interfacial oxide layers, and electric dipoles can be generated at the lower interfaces between the high K gate dielectrics and interfacial oxides through interfacial reaction.

The invention provides a method for preparing a perovskite layer of a perovskite solar cell by using solid-mist interfacial reaction and belongs to the technical field of organic metal halide perovskite solar cells. In view of disadvantages of poor perovskite coverage rate and poor repeatability of an organic metal halide perovskite solar cell prepared by the prior art, the method prepares a lead iodide solid-phase membrane by means of a spin-coating method, and then enables an organic halide solution to be atomized to form solution mist to react with solid-mist-phase interface, thereby forming an organic metal halide layer with perovskite structure. The perovskite layer prepared through the method is good in crystallinity and high in coverage rate, and may improve the photoelectric conversion efficiency of the perovskite solar cell. The method is short in reaction time, easy to control in reaction condition, simple in equipment, good in maneuverability, good in repeatability, suitable for being popularized and applied in real production.

The positive electrode of a solid lithium ion secondary battery including a solid electrolyte and a positive active material that includes core particles and a coated layer at least partially covering the surfaces of the core particles. The core particles comprise a layered lithium composite oxide including a metal element having an oxidation number that remains constant during charging and discharging within a voltage range from about 2 V to about 5 V. The coated layer comprises a metal compound including a metal element having an oxidation number that remains constant during charging and discharging within a voltage range from about 2 V to about 5 V. The structure of the positive active material is stable over repeated charge and discharge cycles. Interfacial reaction between the positive active material and the solid electrolyte is suppressed. The solid lithium ion secondary battery has high output power and a long lifetime.

The present invention relates to an all-solid-state lithium secondary battery and a method of manufacturing the same. The all-solid-state lithium secondary battery includes a cathode, an anode, and a composite solid electrolyte layer between the cathode and the anode, wherein first and second LLZOs contained respectively in the cathode and the composite solid electrolyte layer are each independently aluminum-doped or undoped LLZO, and the battery of the invention can exhibit improved discharge capacity and cycle characteristics because both the cathode and the composite solid electrolyte layer contain a conductive polymer, a lithium salt and an inorganic ceramic solid electrolyte. The method of the invention enables the all-solid-state lithium secondary battery to be manufactured in a non-sintering manner, thus reducing manufacturing costs and controlling interfacial reactions between active materials, between solid electrolyte particles, and between an electrolyte and an electrode, thereby further reducing the internal resistance of the battery.

The invention provides a manufacturing method of a titanium rolled composite plate and belongs to the material processing field. The method is characterized in that a titanium plate-steel plate combined blank manufactured by use of a common method is heated at two stages: firstly, the titanium plate-steel plate combined blank is put in a heating furnace and heated to the range of 500-700 DEG C; after heat preservation of 50-90 minutes, the titanium plate-steel plate combined blank is further heated to the range of 800-1000 DEG C, and then heat is preserved for 10-20 minutes so that the temperature of the internal titanium layer is lower than that of the external steel layer. The heating at the first stage is carried out at a low temperature and thus capable of reducing the degree of element diffusion between the titanium plate and the steel plate, while the heating at the second stage is carried out at a higher temperature and thus advantageous for hot rolling. In addition, the short-time high-temperature heating at the second stage aims at enabling the temperature of the internal titanium layer is lower than that of the external steel layer. Due to the adoption of the manufacturing method, element diffusion between the steel plate and the titanium plate can be retarded and the degree of an interfacial reaction can be reduced, and therefore, the titanium composite plate with higher bonding strength can be manufactured.

An electrode structure of a PDP (plasma display panel) and its manufacturing method, where the production cost is curtailed with the extension of life by forming a protection layer of excellent properties and low cost on an insulating substrate during the manufacture of the panel. The structure comprises two substrates coupled in parallel with each other by frit glass. One of the two substrates has sustain electrodes. One or more dielectric layers are formed over the sustain electrodes, and an interfacial reaction preventive layer and a protection layer are formed over the dielectric layers. The other substrate has address electrodes arranged thereon. A lower dielectric layer is formed over the address electrodes. Barriers coated with phosphor are formed between the upper and lower substrates. The protection layer may be deposited in a multilayered form by a spin coating method.

The invention relates to an all-solid-state lithium battery and a preparation method thereof. The all-solid-state lithium battery comprises a positive plate, a negative plate and a solid electrolyte layer, wherein the positive plate comprises a positive active substance, and the positive active substance comprises positive material particles and a fluorine-containing lithium titanate layer coatingthe surfaces of the positive material particles. According to the method for preparing the positive active substance with a positive material coated by the fluorine-containing lithium titanate layerfrom the positive material, titanium tetrafluoride and a lithium salt through mixing and sintering, the surface of the positive material can be uniformly modified so as to obtain the positive materialwith controllable fluorine content and fluorine-containing lithium titanate layer thickness on its surface. When the positive material is used in the all-solid lithium battery, the structure of a coating can be stabilized, interfacial reaction or element diffusion between the positive material and the solid electrolyte can be avoided, and interface impedance is reduced.

The invention relates to a method for preparing a silicon oxide-based ceramic core for titanium and titanium alloy casting. The method comprises steps of preparing a blank of the silicon oxide-based ceramic core, preparing a ZrO2 or Y2O3 coating on the surface of the blank of the silicon oxide-based ceramic core through a surface coating technology, and intensively sintering the ceramic core. The silicon oxide-based ceramic core prepared by the method can effectively overcome the defect that the zirconia or yttria-based ceramic core has high cost and is difficult to remove as well as the defect that conventional silicon oxide ceramic core cannot be used due to strong interfacial reaction in solidification of the titanium alloy.

The invention belongs to the technical field of reverse osmosis composite membrane, and specifically refers to a high water flux reverse osmosis membrane and a preparation method thereof. An interfacial reaction of an aqueous solution of aromatic polyamine with polybasic acyl chloride solution is carried out on a porous support film, wherein the aqueous phase or organic phase solution for interfacial polymerization is supplemented with a polar aprotic additive; and certain subsequent treatment is carried out. The present invention has the advantage that the provided a preparation method is simple, and low in operating pressure; and the prepared polyamide reverse osmosis composite membrane has high water flux without significant reduction in the rate of desalination. The high water flux polyamide composite reverse osmosis membrane of the present invention has broad application prospects.

The invention discloses a preparation method of a continuous carbon fiber surface pyrolytic carbon/nickel composite coating. According to the invention, a pyrolytic carbon coating is prepared on the surface of a carbon fiber in weftless carbon fiber cloth through a chemical vapor deposition method, and the thickness of the pyrolytic carbon coating is 0.03-0.1 micrometer. A nickel coating is prepared on the surface of the carbon fiber with the pyrolytic carbon coating through a chemical plating method. By controlling the reaction time of the carbon fiber in a chemical nickel-plating solution, the thickness of the nickel coating is controlled to 0.02-0.1 micrometer, so that the carbon fiber containing a pyrolytic carbon/nickel composite coating which is 0.05-0.2 micrometers in thickness is acquired. According to the preparation method, the carbon fiber can be well prevented from being oxidized and is effectively prevented from being damaged and destroyed; and the occurrence of too many interfacial reactions between the carbon fiber and aluminum alloy can be reduced because the microstructure of pyrolytic carbon tends to be graphitized so that the interface combinability between the carbon fiber and the aluminum alloy can be adjusted.

The present application discloses a method for tuning the work function of a metal gate of the PMOS device, comprising the steps of depositing a layer of metal nitride or a metal on a layer of high-k gate dielectric by physical vapor deposition (PVD), as a metal gate; doping the metal gate with dopants such as Al, Pt, Ru, Ga, Ir by ion implantation; and driving the doped metal ions to the interface between the high-k gate dielectric and interfacial SiO₂ by high-temperature annealing so that the doped metal ions accumulate at the interface or generate dipoles by interfacial reaction, which in turn tunes the work function of the metal gate. The inventive method can be widely used and its process is simple and convenient, has a better ability of tuning the work function of the metal gate, and is compatible with the conventional CMOS process.

The invention relates to a method for connecting Cf/Al composite materials and TiAl, in particular to a method for connecting Cf/Al composite materials and TiAl through laser ignition self-propagating reaction auxiliary brazing. The method aims to solve the problems that in a conventional welding method, due to the fact that heating temperature is too high and pressure is too large, carbon fibers and an aluminum substrate in the Cf/Al composite materials generate a serious interfacial reaction, interfacial combination is damaged, and the performance of base metal is weakened. The method comprises the steps that 1, nickel powder/aluminum powder mixed powder is prepared; 2, a middle-layer compact is prepared; 3, surface pretreatment is carried out; 4, laser ignition is carried out. The laser ignition is used for igniting the middle layer, complete reaction is carried out on the middle layer, and even products are formed. Brazing filler metal is heated and melted, the clearance of the middle layer is filled, and connector density is improved. The base metal on the two sides, the middle layer and the brazing filler metal form metallurgical bonding, a connector good in performance can be obtained, and the strength can reach more than 40.5Mpa. The method can be used for connecting the Cf/Al composite materials and the TiAl.

The invention relates to diamond/aluminum composites and preparation methods of the diamond/aluminum composites, in particular to a diamond/aluminum composite and an efficient preparation method of the diamond/aluminum composite. The diamond/aluminum composite and the efficient preparation method of the diamond/aluminum composite aim to solve the problems that a diamond/aluminum composite preparedin the prior art is poor in interface bonding strength and low in heat conductivity, infiltration efficiency and density, and the interfacial reaction of diamond and aluminum is insufficient. The diamond/aluminum composite is composed of aluminum metal and diamond powder with a coating film layer, and intervals of the diamond powder with the coating film layer are filled with the aluminum metal.The efficient preparation method of the diamond/aluminum composite comprises the steps of firstly, preparing a near-net forming mold; secondly, coating the surface of the diamond powder with the film;thirdly, conducting pressure infiltration preparation, fourthly, conducting pressure infiltration and fifthly conducting demolding. The density of the diamond/aluminum composite reaches 99.8% or over, the production efficiency is improved, the raw material cost is reduced, and the interface bonding strength and the heat conductivity are improved. The efficient preparation method is suitable for preparation of the diamond/aluminum composite.

The disclosure provides a method to construct and physically join near-net shaped structural building blocks into a composite part using an interfacial reaction-activation mechanism.

The invention relates to a Ti-enhanced B4C/SiC multiphase ceramic, which belongs to the technical field of a metal particles-enhanced ceramic composite material. In the Ti-enhanced B4C/SiC multiphase ceramic, Ti and B4C are subjected to an interface reaction to generate a TiB2 phase, optimization of object phase composition is realized, crystal grain refinement effect is realized, and mechanical properties of the multiphase ceramic can be increased; a lot of liquid phase is generated during a vacuum hot pressed sintering of Ti, sintering and densifying processes of the multiphase ceramic can be promoted, the microstructure of the prepared multiphase ceramic is compact; in addition, the multiphase ceramic has a transgranular fracture and intergranular fracture-coexisted mixing fracture mode, so that the fracture toughness property of the multiphase ceramic is increased.

The invention discloses a method for connecting a Cf/Al composite with TiAl based on the laser ignition and the self-propagating reaction and relates to a method for connecting the Cf/Al composite with the TiAl. The method for connecting the Cf/Al composite with the TiAl based on the laser ignition and the self-propagating reaction mainly aims to solve the problems that according to a conventional welding method, due to the over-high heating temperature, over-high pressure and the like, a serious interfacial reaction occurs between carbon fibers and an aluminum matrix in the Cf/Al composite, interfacial bonding is damaged, and the performance of base metal is exacerbated. The method for connecting the Cf/Al composite with the TiAl based on the laser ignition and the self-propagating reaction comprises the steps of preparing mixed powder, preparing the compact of a middle layer, pretreating the surface of the Cf/Al composite and the surface of the TiAl, and conducting laser ignition. When the method is adopted to connect the Cf/Al composite with the TiAl, the middle layer reacts completely under the ignition of lasers, uniform products are generated, no remaining metal particle exists, and therefore the uniformity of the performance of a joint is guaranteed. The method can be used for connecting the Cf/Al composite with the TiAl.

The invention relates to a method for preparing a metal matrix composite, in particular to a method for preparing a particle-enhanced metal matrix composite by laminating technology. In the method, a metal matrix in the metastable state such as a fine-grained, even amorphous state and the like obtained by combining quick cooling technology and the enhancement of ceramic particles is combined with the ceramic particles to achieve higher material performance; molten metal is blown onto surfaces of the ceramic particles under the protection of inert gases, and the ceramic particles are combined with the matrix firmly by rolling compaction; the molten metal blown later is compounded with a metal layer blown earlier, so that the combination of the ceramic particles and the metal matrix during the rolling compaction is improved further; and the processes are performed repeatedly until the particle-enhanced metal matrix composite with specified thickness is obtained. The method is easy and convenient to operate, and the large-scale industrial production is easy to realize; and due to high cooling rate, the matrix metal has high performance, and an interface reaction between the particles and the metal matrix is relieved simultaneously.

The invention provides a refined slag control method for improving castability of small square billet killed steel and belongs to steelmaking refinement control technologies. Aluminum wires are ensured not to be fed into a ladle furnace (LF) by adding sufficient aluminum alloy to perform deoxidization and adding an appropriate amount of synthesized slag to perform washing, simultaneously CaO, CaF2 and Al2O3 are adopted in the LF refining process to perform slag formation, slag charges are added in a batch mode, aluminum particles are scattered on the slag surface in the refining process according to the slag situations to ensure the slag reducibility, and finally final slag components are controlled as follows: CaO=45-55%, Al2O3=35-40%, MgO=5-10%, and SiO2<=5%. Therefore, the flowability of a slag system is good, steel slag interfacial reaction is facilitated, absorption of oxide inclusion in molten steel is facilitated, accordingly conversion and removal of aluminum deoxidized inclusion in the molten steel are promoted, the feeding amount of Ca wires can be decreased, even the Ca wires are not fed, the castability of the molten steel is good, and the liquid level of a crystallizer is stable.

This invention relates to an economical and efficient process for purifying a reaction mixture obtained in a two-phase interfacial reaction for the preparation of polycarbonate. More particularly, the method of the invention provides for separating the reaction mixture into an organic phase, which includes the desired polycarbonate and undesirable impurities, and an aqueous phase. The organic phase is further purified by using a plate decanter in combination with coalescence and centrifugation.

This invention provides a process for the preparation of protein mediated calcium hydroxyapatite (HAp) coating on metal substrates particularly on stainless steel (316 L) by biomimetic route, capable of rapid and effective osteointegration with the host tissue following controlled interfacial reactions. For the purpose, calcium deficient, carbonated hydroxyapatite (HAp) coating was developed on metal substrates particularly on stainless steel (316L) alloy through biomimetic route after a surface treatment step using aqueous solution (4-10 wt %) of BSA at room temperature. The coating was characterised with respect to phase composition, crystallinity, morphology and thickness. The protein mediated calcium phosphate ceramic coating is porous (pore dia—100-200 μm) having uniform pore distribution and coverage. There is multifold enhancement in thickness and crystallinity (data provided) of the as-prepared coating. The process in the present invention is designed to mimic the structural and characteristic properties of the biological apatite to expedite osteointegration kinetics and to further improve biocompatibility of the metallic implant.