949 results about "Inter layer" patented technology

The invention relates to the technical field of packaging film production, and discloses a production process of a three-layer co-extrusion FFS (fringe field switching) heavy coating film, which comprises the following steps: S1, selecting proper raw materials including an outer layer material, an inner layer material and a middle layer material; s2, drying the selected raw materials respectively to ensure that the moisture content is lower than 0.1%; s3, uniformly mixing different materials and additives through premixing equipment; s4, feeding the three materials into co-extrusion equipment, simultaneously extruding melt materials of different layers through a co-extrusion machine, and forming a multi-layer film structure through a die head; and S5, controlling the temperature and the flow speed at the die head to ensure the fluidity and the pressure distribution uniformity of the material melt of each layer. Through a dynamic stretching device, a pressure feedback control system, an optimized die head design and an intelligent control system, uniform film bubble expansion, accurate film thickness control and improvement of film quality stability are realized, the production efficiency and automation are improved, and the consistency and overall performance of film quality are remarkably improved.

The invention discloses a method for preparing a copper-aluminum layered composite board by introducing laser into an intermediate layer, which comprises the following steps: introducing laser into the intermediate layer (Al-Cu-Mg-Si-Zr-Sc series alloy), so that on one hand, copper and aluminum to be compounded are in a heating state to be subjected to rolling compounding by utilizing the heat conduction effect of the heated intermediate layer; the rolling reduction rate and the rolling mill capacity requirement are obviously reduced; and on the other hand, the added middle layer has excellent obdurability, so that the cooperative deformation capacity between the to-be-compounded dissimilar materials can be improved, and the interface bonding performance of the composite material is improved. And a mode of'introducing laser into the middle layer and carrying out short-time online annealing treatment 'is adopted to replace'large down pressure and long-time diffusion annealing' adopted by a traditional copper-aluminum composite material, so that the processing and forming efficiency of the copper / aluminum composite material is remarkably improved, and the method has the characteristic of short process.

The invention provides a diamond / copper multi-layer composite material capable of being subjected to high-temperature silver-copper welding, a preparation method of the diamond / copper multi-layer composite material and a heat dissipation device comprising the diamond / copper multi-layer composite material capable of being subjected to high-temperature silver-copper welding. The diamond / copper multilayer composite material capable of being subjected to high-temperature silver-copper welding is of a sandwich structure, a middle layer is made of a diamond / copper composite material, and an upper layer and a lower layer are respectively made of any one of tungsten copper, molybdenum copper and copper / molybdenum copper / copper (CPC material). The surface of the diamond / copper multilayer composite material is covered with the metal alloy material, so that the diamond / copper multilayer composite material has remarkably improved strength and lower thermal expansion coefficient at high temperature, and can be welded with ceramic at high temperature, so that a silver-copper solder can be used for replacing a gold-tin solder, and the application cost of the diamond / copper multilayer composite material is reduced.

The invention discloses a multilayer co-extrusion heat-shrinkable film and a preparation method thereof, the film comprises an outer wear-resistant layer, a middle support layer and an inner functional layer, the thickness ratio of each layer is 1: 3: 1-1: 5: 1, the total thickness is 50-150 [mu] m, and the raw materials are prepared according to respective formulas. The preparation method comprises the steps of raw material preparation, melt mixing, die head extrusion, two-way stretching, water-cooling shaping, electronic crosslinking, aging treatment, heating softening and cold and hot shaping. The carbon nanotubes (CNT) and the h-BN nanosheets synergistically hinder crack propagation in the middle layer, so that the crack propagation resistance of the film is remarkably improved, the tensile strength, the thermal shrinkage rate and other properties are also optimized, compared with a traditional film, the comprehensive properties of wear resistance, high strength and high thermal shrinkage rate are achieved through interface collaborative design, meanwhile, the production cost is reduced by 20-30%, and the application prospect is wide. The method is suitable for food packaging, electronic device protection and other fields.

The invention discloses a SiC / SiC composite material cladding tube and a preparation method and application thereof, and the preparation method comprises the following steps: carrying out vacuum impregnation on a SiC / SiC composite material tube in a SiC precursor solution, and after vacuum impregnation, carrying out curing and cracking to obtain a densified SiC / SiC composite material middle layer; depositing a SiC layer on the outer surface of the SiC / SiC composite material middle layer by adopting a chemical vapor infiltration process; and depositing the SiC layer on the surface of the SiC layer obtained by deposition by adopting a chemical vapor deposition process. According to the method, through densification improvement of the SiC / SiC composite material middle layer and improvement of the outer coating process, the air tightness and the heat conductivity of the SiC / SiC composite material cladding tube are remarkably improved, the good air tightness without obvious leakage under the positive pressure condition of 20 MPa is achieved, the heat conductivity higher than 20 W / m.k is achieved, and the application requirement of a reactor is met.

The invention belongs to the technical field of composite material casting, and relates to an aluminum / iron bimetal composite material based on a micro-textured intermediate layer and a preparation method thereof.The micro-textured intermediate layer is pre-arranged on the surface of an iron base material in advance in an electro-deposition and laser etching composite mode, and in the liquid-solid composite casting process, the micro-textured intermediate layer is pre-arranged on the surface of the iron base material in advance; the middle layer plays a role in isolating direct contact between the liquid aluminum alloy melt and the solid iron base material, and the microstructure on the surface of the middle layer plays a role in inducing stress coordinated distribution. The problem that the interface is easy to crack can be effectively solved through dual control of the interface phase composition and the interface structure of the aluminum / iron double-metal composite material, so that the interface bonding strength of the aluminum / iron double-metal composite material is stably improved.

The invention relates to the field of bimetal composite materials, in particular to a method for researching the influence of an intermediate layer on bimetal interface assembly and performance, which comprises the following steps: electrochemically depositing a FeCoNiCr-M high-entropy alloy coating; a micro-textured high-entropy alloy coating is constructed in a laser controllable manner; according to Al / HEA / Fe composite material liquid-solid forming process optimization and structure property characterization, the Al / HEA / Fe composite material liquid-solid forming process optimization and structure property characterization method has the following beneficial effects that according to the requirement for Al / Fe bimetal high interface bonding strength, the microtextured high-entropy alloy coating is prepared through the electrochemical and femtosecond laser composite technology, the microtextured high-entropy alloy coating serves as a middle layer between a solid steel matrix and a liquid aluminum alloy melt, and the high-strength Al / HEA / Fe composite material is obtained; the Al / HEA / Fe composite material is obtained through a liquid-solid forming technology, and the Al / HEA / Fe composite material is obtained through high-entropy alloy component / content optimization, coating surface structure design, technological parameter regulation and control and the like on the basis of thermal and dynamic calculation and experimental data analysis. And research on the aspects of a high-entropy alloy coating solid solution phase forming mechanism, a composite material interface structure evolution rule, an interface strengthening mechanism and the like is carried out.

The invention provides a composite structure with a conductive material coated on a single surface of a ceramic substrate. The composite structure comprises a ceramic substrate; a first conductive layer bonded to a surface of the ceramic substrate; and a second conductive layer bonded to the other surface of the first conductive layer that is not in contact with the ceramic substrate. Wherein the special conductor is used as the material of the middle layer, so that the purposes of being easy to process and joint, simultaneously maintaining heat dissipation and conductivity, and effectively dredging high current, high voltage and high power can be achieved.

The utility model discloses a multilayer composite enameled wire and a painting device thereof, the multilayer composite enameled wire comprises a copper wire core (1), the surface of the copper wire core (1) is provided with a primer layer (2), a middle layer (3) and a finishing coat layer (4) from inside to outside in sequence, the primer layer (2) is formed by compounding 12-14 high-toughness polyurethane layers with the same thickness, the thickness of the primer layer (2) is 12-28 microns, and the thickness of the finishing coat layer (4) is 12-28 microns. The middle layer (3) is formed by compounding 8-10 thermosetting resin layers with the same thickness, the thickness of the middle layer (3) is 8-20 microns, the finish paint layer (4) is formed by compounding 4-6 epoxy resin layers with the same thickness, and the thickness of the finish paint layer (4) is 4-12 microns; and the high-toughness polyurethane layer, the thermosetting resin layer and the epoxy resin layer are formed by independently baking. According to the utility model, the insulating property of the enameled wire can be improved, and the painting effect of the enameled wire is improved while the painting cost of the enameled wire is reduced.

The invention provides a wave-absorbing material, and belongs to the technical field of electromagnetic wave absorption. The wave-absorbing material comprises a metal reflection bottom layer, a wave-absorbing middle layer and a scattering upper layer, the wave-absorbing middle layer is made of a ferroferric oxide loaded reduced graphene oxide and epoxy resin (Fe3O4 (at) RGO / EP) composite material and used for absorbing electromagnetic wave energy, and the scattering upper layer is of a patterned metasurface structure made of chopped carbon fiber reinforced epoxy resin (SCF / EP). And a phase-regulated two-dimensional periodic array is formed. By arranging a three-layer structure of the metal reflecting layer, the Fe3O4 (at) RGO / epoxy composite wave-absorbing layer and the chopped carbon fiber scattering layer, broadband absorption and directional scattering control of electromagnetic waves within the range of 2-18 GHz are achieved, a stealth function composite material system with dissipation and deflection dual-mechanism cooperative work is formed, the structure utilizes the patterning design of the scattering layer, and the structure has the advantages that the structure is simple, the structure is compact, and the application range is wide. On the basis of the generalized Snell's law, engineering regulation and control of the radar wave reflection direction are achieved by regulating and controlling the reflection phase difference between pattern units, reflection energy is effectively deviated from the main lobe direction of a radar receiver, and therefore the reflection signal intensity of a target in a radar detection system is reduced.

The invention relates to the field of metal coatings, and discloses a gradient composite high-toughness wear-resistant coating and application and a preparation method thereof, the gradient composite high-toughness wear-resistant coating comprises a substrate layer, a middle layer cladded on the substrate layer and a boriding layer on the surface; the base layer is made of a FeCoCrNiTi high-entropy alloy; the middle layer comprises a plurality of laminated composite material layers, and the composite material layers contain TiB2 and FeCoCrNiTi high-entropy alloy; in the direction from the substrate layer to the boriding layer, the content of TiB2 in the composite material layer is gradually increased, and in the composite material layer attached to the boriding layer, the content of TiB2 is 16-20 wt%. The gradient composite high-toughness wear-resistant coating is suitable for strengthening agricultural soil-touching parts, resisting operation impact and reducing the abrasive particle abrasion condition, so that the service life of the soil-touching parts is prolonged, and the operation cost is reduced.

The invention discloses an interface enhancement gradient design method of an anti-impact aviation glass laminated structure, and relates to the technical field of composite material design, the method comprises the steps of glass material preparation, interface enhancement gradient design, lamination compounding, quality detection and performance testing, the glass material comprises a glass layer material, a middle layer material and a transition layer material, the laminated composite process comprises the steps of pre-strain treatment, pre-pressing treatment, hot-pressing combination and cooling demolding, and has the advantages that by arranging the transition layers with components and performance in gradient change, the content of reinforcing materials such as nanometer titanium dioxide particles and graphene nanosheets in each transition layer is gradually increased; and compared with a traditional uniform or simple layered structure, the gradient design has the advantage that the phenomenon of interface stress concentration caused by performance difference between the glass layer and the polymer intermediate layer is remarkably reduced.

The invention discloses a socket and spigot type multi-layer pipe and a design method for the socket thickness and the spigot thickness of the socket and belongs to the technical field of pipe design, the pipe comprises an inner pipe, a middle layer and an outer pipe which are sequentially connected in a sleeved mode from inside to outside, the outer pipe is made of metal, the middle layer is made of nonmetal, the inner pipe is made of polyethylene, and the outer pipe is made of polyethylene. The outer pipe comprises a bellmouth, a pipe body and a spigot which are connected in sequence, each end of the pipe is provided with a bushing ring and a sealing gasket, the two bushing rings respectively wrap the two sealing gaskets, the bellmouth is a single-layer bellmouth, when the length of the bushing ring extending into the inner pipe is smaller than the length of the spigot, the spigot is a single-layer spigot, and otherwise, the spigot and the bushing ring matched with the spigot form a composite spigot. The inner layer and the outer layer are bonded into a whole through the hot melt adhesive, and the lining ring and the rubber sealing gasket prevent water pollution caused by corrosion and stripping of the inner wall of the metal outer pipe; the spigot and the bushing ring matched with the spigot form a composite spigot, and the minimum spigot thickness and the minimum bellmouth thickness of the multi-layer pipe can be obtained through theoretical analysis and calculation.

The invention discloses a multilayer composite pipe with edge-wrapped and sealed end faces and a manufacturing method thereof.The composite pipe comprises an inner pipe, a middle layer and an outer pipe, the middle layer is made of hot melt adhesive, the inner pipe is resistant to corrosion, the outer pipe comprises a bell mouth, a pipe body and a spigot which are connected in sequence, and the end face of the spigot and the end face of the pipe body are wrapped by two sealing gaskets respectively; one end of the inner pipe tightly presses the sealing gasket on the socket end face, and the other end tightly presses the sealing gasket on the pipe body end face to form full sealing. The manufacturing method comprises the steps that the outer pipe is treated, and the inner pipe and the middle layer are manufactured; the inner pipe, the middle layer and the outer pipe are arranged from inside to outside; each layer is compressed; performing compounding; and covering edges are arranged. The inner pipe and the outer pipe are separated by the middle layer, the bonding strength is high, the lining is prevented from being separated, the covered edge and the inner sleeve are integrally formed or welded, the inner sleeve is prevented from being washed away by water flow, the covered edge has no step, and the step water flow resistance is completely eradicated. And the minimum thickness of the composite socket and the minimum thickness of the single-layer socket of the socket pipe can be obtained through theoretical calculation.

The invention provides a transparent bulletproof ceramic composite structure with an electric heating function and a preparation method of the transparent bulletproof ceramic composite structure. The composite structure comprises an anti-splashing layer (1), a first middle layer film (2), a multi-layer stacked structure (3) of glass sheets and films, a first transition layer (4), an electric heating film layer (5), a second transition layer (6), a ceramic layer (7), a first antireflection film layer (8), a second antireflection film layer (9), a third antireflection film layer (10), a second middle layer film (11), an inorganic glass layer (12), a third transition layer (13) and an anti-static layer (14) which are arranged in sequence. The composite structure provided by the invention has excellent impact resistance and bulletproof grade, can effectively resist the damage of high-speed elastic sheets or impact objects, and meets the requirements of high-safety application scenes such as weapon armors, armed airplanes and high-speed trains; and the anti-static film has clear optical observation capability, high transmissivity and anti-static property.

A load structure may include a first honeycomb layer, a second honeycomb layer, and a plurality of intermediate layers. The plurality of intermediate layers may be disposed between the first and second honeycomb layers. The intermediate layers may include one or more adhesive layers, a fiberglass layer, and a paper layer.

The invention relates to a titanium-magnesium composite material with a three-dimensional interlocking interface structure and preparation of the titanium-magnesium composite material. Belongs to the metal material field. The method comprises the following steps: firstly, performing diffusion connection on an intermediate layer alloy and an alloy net, and then performing hot pressed sintering on the intermediate layer alloy, an aluminum alloy and a magnesium alloy, so that the aluminum alloy and the magnesium alloy are respectively embedded into titanium nets on two sides of an interface to form an aluminum / magnesium joint with a three-dimensional interlocking structure. The aluminum / magnesium layered composite material prepared by the method is short in process flow, simple and convenient to operate, mild in interface reaction and excellent in interface bonding performance. The method is suitable for interface compounding of a series of aluminum / magnesium materials. The method is simple to operate, easy to control and good in industrialization prospect.

The invention discloses a hard coating with thermal stability and high-temperature oxidation resistance as well as a preparation method and application of the hard coating, and belongs to the technical field of nitride hard coatings. The hard coating is composed of a bottom columnar crystal TiAlN base coat, a middle columnar crystal AlTiCrN middle layer and an AlCrSiBN surface layer of a surface nanometer composite structure. Low-aluminum TiAl target deposition is adopted for the TiAlN base layer, high-aluminum AlTi target and AlCr target co-deposition is adopted for the middle of the TiAlN base layer, and high-aluminum AlCrSiB target deposition is adopted for the AlCrSiBN surface layer; the thickness of the TiAlN base coat is 0.1 to 0.5 [mu] m; the thickness of the AlTiCrN intermediate layer is 1.0 to 2.0 [mu] m; and the thickness of the AlCrSiBN surface layer is 0.05 to 0.2 [mu] m. The coating has high film-substrate binding force, thermal stability and high-temperature oxidation resistance. The inner layer of the coating has excellent thermal stability, and the outer layer of the coating has excellent high-temperature oxidation resistance, so that the coating has wide application prospects on the surfaces of products such as cutting tools and molds.

The present invention relates to the technical field of thermally conductive composite materials, and discloses a polymer-based composite material with high thermal conductivity and high insulation, wherein the composite material comprises the following components in mass percentage: a modified liquid crystal polymer matrix: 55% to 60%, wherein a benzene ring or a biphenyl rigid chain segment is introduced through an esterification reaction to improve the elastic modulus and phonon matching performance; and a surface-modified flaky boron nitride filler: 38% to 43%, wherein the filler has a thickness of 20 to 50 nanometers, a diameter of 1 to 5 micrometers, and a silicon oxide intermediate layer is coated on the surface, and the coating thickness is 5 to 10 nanometers, which is used to optimize the phonon conduction performance and reduce the interface thermal resistance. By adopting the technical scheme of coating a silicon oxide intermediate layer on the surface of the flaky boron nitride filler, a uniform and dense silicon oxide coating is prepared by a sol-gel method, and the coating thickness is optimized to be within 5 to 10 nanometers through a spin coating process and high-temperature calcination, so as to ensure that the interface performance and phonon conduction performance of the filler surface are significantly improved.

The invention discloses a low-temperature and low-pressure connection method for copper surface in-situ nanocrystallization, and relates to a copper connection method. The method aims at solving the technical problems that operation of current copper sintering connection is complex, an intermediate layer needs to be added for assistance, the connection strength is low, the interface welding rate is low, the connection temperature and pressure are too high, and the heat preservation time is long. The nanolayer is prepared on the surface of the copper substrate by adopting an in-situ nanocrystallization method, the nanostructure has relatively large surface energy, sintering connection can be realized at low temperature and low pressure, a high-strength joint is formed, and the method can be applied to the fields of copper connection, electronic packaging and the like. And under the condition of 125 DEG C / 10min / 5MPa, the shear strength of the obtained joint can reach 118.9 MPa without additionally adding a nano-particle sintering middle layer, and a connection structure with low connection temperature, short time, low required pressure and high mechanical stability is realized. The method is simple and effective to operate, can realize low-temperature connection of large-size samples, and has a wide application prospect.

The present invention belongs to the field of energy conservation and environmental protection, and in particular, relates to a fresh-keeping atmosphere-modifying film, a processing method thereof, and a processing equipment thereof. The fresh-keeping atmosphere-modifying film comprises: a high-barrier middle layer, an outer layer located on the upper side of the high-barrier middle layer, an inner layer located on the lower side of the high-barrier middle layer, and a reinforcing layer located on the lower side of the inner layer, the reinforcing layer and the inner layer are bonded by a first bonding layer, the inner layer and the high-barrier middle layer are bonded by a second bonding layer, the high-barrier middle layer and the outer layer are bonded by a third bonding layer, and the outer layer and the inner layer are a linear low-density polyethylene mixture. The fresh-keeping atmosphere-modifying film of the present application has high barrier properties, good mechanical properties, and good environmental performance.

Techniques for joining dissimilar materials in microelectronics are provided. Example techniques direct-bond dissimilar materials at an ambient room temperature, using a thin oxide, carbide, nitride, carbonitride, or oxynitride intermediary with a thickness between 100-1000 nanometers. The intermediary may comprise silicon. The dissimilar materials may have significantly different coefficients of thermal expansion (CTEs) and / or significantly different crystal-lattice unit cell geometries or dimensions, conventionally resulting in too much strain to make direct-bonding feasible. A curing period at ambient room temperature after the direct bonding of dissimilar materials allows direct bonds to strengthen by over 200%. A relatively low temperature anneal applied slowly at a rate of 1° C. temperature increase per minute, or less, further strengthens and consolidates the direct bonds. The example techniques can direct-bond lithium tantalate LiTaO3 to various conventional substrates in a process for making various novel optical and acoustic devices.

The present application relates to a sheath tube capable of multi-directional bending and a transcatheter intervention system. The sheath tube capable of multi-directional bending includes: a main body section; a bending section connected to the distal end of the main body section. The bending section is a multi-layer composite tube body and includes a plurality of segments. The middle layer of the multi-layer composite tube body is a braided mesh, and the density of the braided mesh of the plurality of segments gradually decreases along the direction from the proximal end to the distal end; at least a pair of traction mechanisms, each pair of the traction mechanisms sequentially passes through the bending section and the main body section to adjust the bending angle of the bending section in different directions. In the present application, the density of the braided mesh at the distal end of the bending section is set to be the smallest, so that by only controlling the traction mechanism with a relatively small acting force, the distal end of the sheath tube can be quickly adjusted to the bending angle adapted to the delivery path, thereby effectively improving the bending performance of the bending section.

The invention relates to an anti-CMAS layer-column composite structure environmental barrier coating and a preparation method thereof, belongs to the technical field of high-temperature ceramic composite materials and environmental barrier coatings, and solves the problem of corrosion failure of the environmental barrier coating caused by adhesion and permeation of corrosive substances such as water vapor or CMAS and the like into the coating in the prior art. The anti-CMAS layer-column composite structure environmental barrier coating comprises a SiC-based ceramic matrix, a bonding layer, an environmental barrier intermediate layer and an anti-CMAS corrosion layer which are sequentially stacked, the anti-CMAS corrosion layer comprises a compact sub-layer and a columnar sub-layer which are stacked in sequence; the compact sub-layer is laminated on the environmental barrier intermediate layer; the columnar sub-layer is of a columnar structure. On the premise of improving the water vapor corrosion resistance of the SiC ceramic-based composite material, the wettability of CMAS on the surface of the coating can be reduced, the infiltration speed of CMAS is delayed, and the high-temperature stability and CMAS corrosion resistance of a ceramic-based structural component are improved.

The invention provides an aluminum matrix composite laser welding structure and a welding method thereof. The welding structure comprises a first base material, a second base material, a middle layer, a first foil layer and a second foil layer. The first base material is made of a silicon carbide particle reinforced aluminum-based composite material; the second base material is a silicon carbide particle reinforced aluminum-based composite material; the middle layer is formed by mixing and pressing modified silicon carbide particles and active metal powder; one side of the first foil material layer abuts against the first base material, and the other side of the first foil material layer abuts against the middle layer; one side of the second foil material layer abuts against the second base material, and the other side of the second foil material layer abuts against the middle layer. The structure of the weld joint can be effectively improved, welding defects are reduced, and the connection strength and overall performance of the weld joint are improved.

The invention discloses a titanium-based interlayer for titanium-aluminum series dissimilar alloy diffusion welding and a preparation method and application of the titanium-based interlayer, and belongs to the field of dissimilar metal diffusion welding. The middle layer is prepared from the following components in percentage by mass: 72.7%-83.1% of Ti, 13.5%-14.8% of Mo and 2.1%-13.8% of Ta, and the sum of the mass percentages of all the components is 100%. According to the method, the oxidation resistance of the diffusion welding head is remarkably improved while the welding quality and precision are guaranteed, high-quality and high-performance diffusion welding of the TiAl / Ti2AlNb composite component is achieved, and the design index and use reliability requirements are met.

The invention relates to the technical field of metal surface protection, in particular to a high-performance composite film and a preparation method thereof.The composite film comprises a transition layer, a middle layer and a function optimization layer which are sequentially arranged on the surface of a metal substrate from inside to outside, the transition layer is a high-entropy alloy layer, the middle layer contains a boride layer or a nitride layer and a carbide layer, and the function optimization layer is a high-entropy alloy layer. The function optimization layer is a film layer formed by doping at least one of silicon, nitrogen and fluorine on the surface of the carbide layer; the preparation method comprises the following steps: pretreating until the surface roughness Ra of the metal substrate is 0.05-0.2 mu m; ion beam bombardment strengthening is conducted, and then a high-entropy alloy layer is formed through a magnetron sputtering method; the middle layer is formed through combination of a magnetron sputtering method and a laser interference technology, and then the function optimization layer is formed through PECVD (Plasma Enhanced Chemical Vapor Deposition). The obtained composite film is resistant to high temperature and corrosion, high in strength and low in friction coefficient, and can be used in extreme working conditions; the preparation method provided by the invention has good operability and repeatability.

The invention discloses a preparation method of a high-toughness low-conductivity anti-radiation thermal barrier coating. The invention belongs to the technical field of thermal barrier coating materials. Aiming at the problems of thermal expansion mismatch of a precious metal second phase, failure of a multilayer structure interface and insufficient toughness of a glass ceramic-based coating in an existing coating, the invention provides a composite gradient structure design. By introducing the glass ceramic intermediate layer and the gradient functional surface layer and combining plasma spraying and high-temperature sintering processes, the characteristics of high toughness, low heat conductivity, radiation resistance and high-temperature self-healing of the coating are realized. The method comprises the following specific steps: step 1, substrate pretreatment; step 2, bonding layer preparation; step 3, glass ceramic intermediate layer deposition; step 4, functional surface layer gradient spraying; the thermal conductivity of the obtained coating is lower than 0.8 W / (m.K), the bonding strength is larger than 35 MPa, the fracture toughness reaches 4.0 MPa.m < 1 / 2 >, the infrared reflectivity at the waveband of 0.3-10 microns is larger than 0.85, and microcrack self-healing can be achieved at the temperature of 1200 DEG C. The method is suitable for ultra-high-temperature service environments such as aero-engine turbine blades.

The invention discloses a preparation method of a composite interlayer suitable for nickel-based alloy TLP connection, belongs to the field of diffusion welding, and comprises an atomization powder preparation process, a ball milling process and a cold isostatic pressing forming process. AuSi powder is prepared through an atomization powder preparation process, then the AuSi powder and NiTi powder are mixed through a ball milling process, and finally a composite intermediate layer blank is obtained through cold isostatic pressing. According to the method, the AuSi composite middle layer is prepared through the powder metallurgy process, the distribution uniformity of NiTi particles in an AuSi matrix is improved, and the problems that AuSi eutectic structure residues exist in a welding seam and solidification hot cracks appear in the welding seam due to uneven distribution of the NiTi particles are solved. The mass ratio of AuSi powder and NiTi powder capable of completely reacting is accurately calculated through a chemical reaction formula, the adding amount of NiTi particles is accurately controlled through a mechanical ball milling technology, and the problem that in the welding process, excessive Ti elements easily react with Au elements to form a brittle Au4Ti compound is solved.

Interlayers for use with laminates and laminates are provided that may be used in a variety of different applications, such as windows for vehicles and buildings, impact resistance devices, such as bulletproof glass and others, decorative films for windows, walls or doors, window tinting, colored or mirrored glass, window films and the like. An interlayer comprises an adhesive film having a monolithic structure comprising a thermoplastic polyurethane (TPU). The film comprises one or more functional elements disposed within its monolithic structure and has a thickness of at least about 0.015 inches. The interlayer is a single TPU layer that includes both adhesive and functional properties, which allows the interlayer to be attached to one or more outer transparent layers in a laminate assembly that is particularly useful in, for example, applications requiring solar control functionality, such as windows that absorb or reflect heat, IR and / or UV light and the like.