266 results about "Interface bond" patented technology

The invention discloses high-strength corrosion-resistant pervious concrete and a preparation method thereof, and belongs to the technical field of concrete. The concrete is prepared from the following raw materials in parts by weight: 200-300 parts of cement, 1000-1300 parts of coarse aggregate, 20-30 parts of a composite admixture, 10-20 parts of a reinforcing agent, 1-1.5 parts of a water reducing agent, 3-5 parts of an additive and 100-130 parts of water, the reinforcing agent is prepared from modified basalt fiber and styrene-acrylic emulsion according to the mass ratio of (8 to 10): 1; the additive is a SiO2 (at) PDA (at) zeolite composite material; the composite admixture is composed of fly ash and modified steel slag powder according to a mass ratio of 2: 1. According to the invention, by optimizing the proportion of a plurality of composite materials, the interface bonding property with a gel material matrix is improved, the mechanical property and durability are remarkably improved while the water permeability is maintained, and the corrosion resistance of the concrete matrix is enhanced.

The invention discloses a preparation method of an interface self-reaction strong chemical bonding radiant heat protection multilayer gradient coating, and belongs to the technical field of coating surface modification. The invention aims to solve the problems that the existing coating is high in preparation temperature, long in period, high in cost and not suitable for industrial batch production, the interface bonding between the coating and a nickel-based high-temperature alloy matrix is poor, the coating is easy to crack and even lose efficacy due to mismatching of thermal expansion under high-temperature service, and the thermal protection performance of the traditional coating is insufficient. The interface self-reaction strong-chemical-bonding radiant heat protection multilayer gradient coating and a nickel-based high-temperature substrate are subjected to self-reaction at the interface to form strong chemical bonding, the bonding strength of the coating reaches 15 MPa or above, the emissivity value of the coating reaches up to 0.9, the structure of the coating is kept complete and does not fall off after the coating is oxidized in 1250 DEG C high-temperature static air for 30 h, and the coating has the advantages of being simple in preparation process, low in cost and the like. The method has application potential in a nickel-based high-temperature alloy anti-oxidation radiation thermal protection multifunctional integrated metal thermal protection system for a high-speed aircraft.

The invention discloses an epoxy resin tack coat oil material suitable for a steel bridge deck, which constructs a multi-scale toughening composite system through the synergistic effect of an epoxy-terminated polyurethane elastomer toughening agent (molecular-scale chemical grafting) and a nano-scale elastomer filler (nano dispersion toughening), and solves the problem of rigidity-flexibility imbalance of the traditional epoxy tack coat oil. The material has the advantages of fast curing (surface drying at 25 DEG C is less than or equal to 4 hours), high toughness (the elongation at break is greater than or equal to 250%) and excellent weather resistance (the performance retention rate is greater than or equal to 85% after ultraviolet aging for 500 hours), and is suitable for interlayer interface bonding of steel bridge deck pit slot and crack repair. According to the preparation method, uniform dispersion and interface chemical bonding of the nanofiller are achieved through a segmented stirring process, the comprehensive performance of the material is remarkably improved, and the important engineering application value is achieved.

The invention discloses a special aggregate for high-strength UHPC (Ultra High Performance Concrete) as well as a preparation method and application thereof, and relates to the technical field of nano modification. According to the aggregate, high-strength basalt or quartz sand is used as a matrix, continuous graded particles are formed through a multi-stage crushing process, and the particle morphology and size distribution are optimized. The surface of the UHPC aggregate is modified by adopting a nano composite system, and the interface bonding performance of the aggregate and a UHPC matrix is remarkably improved by forming a gradient nano composite coating. And technological parameters are optimized, so that the uniformity and the performance stability of the coating are ensured. The aggregate can significantly improve the compressive strength, breaking strength and durability of UHPC. In the prefabricated bridge wet joint, the aggregate shows excellent construction performance and rapid maintenance characteristics, and can effectively shorten the construction period and prolong the service life of the structure. According to the invention, a high-performance special aggregate is provided for UHPC through a nano modification technology, and the development of ultra-high performance concrete in engineering application is promoted.

The invention relates to the technical field of lamps, in particular to a plating forming process of a lamp. The problems that the interface bonding force of the coating and the matrix is insufficient and the corrosion resistance of the coating is poor are solved. According to the method, micro-arc oxidation is carried out in the pretreatment stage, a compact Al-Si-O ceramic layer is generated on the surface of a high-aluminum matrix in situ, and in combination with deep diffusion of plasma siliconizing, a transition area with gradient Si distribution is constructed; the pitting corrosion resistance of the coating is optimized through the component gradient design of the inner-layer coating, the middle-layer coating and the outer-layer coating; the surface of the coating lamp is subjected to checkerboard scanning by using short pulse laser, so that the porosity and microdefects of the surface of the coating are improved, and the corrosion resistance of the coating is enhanced; a uniform oxynitride passivation film is generated on the surface of the coating in situ through low-temperature plasma post-oxidation-nitridation treatment, the defect that a film layer is easy to strip in a traditional passivation process is avoided, and the corrosion resistance of the material in long-term service can be stably maintained.

The invention discloses a high-resilience eTPU foaming material and a preparation process thereof, and belongs to the technical field of foaming materials. The process comprises the steps of raw material premixing and TPU chain extension reaction, precursor system injection, in-situ phase change energy storage core-shell particle generation, supercritical two-fluid foaming and molding post-treatment. Wherein the SiO2-coated TiO2 core-shell particles are prepared by a non-hydrolytic sol-gel method, the porous SiO2 core adsorbs and fixes the micro-crosslinked polyurethane-based phase change material, the TiO2 shell provides sealing and supporting, the particles are combined with the TPU matrix through covalent bonds, and the micro-crosslinked polyurethane-based phase change material has a unique micro-crosslinked network structure, so that the thermal conductivity of the TPU matrix is improved, and the thermal conductivity of the TPU matrix is improved. The hidden danger of leakage of the phase change material in the using process can be effectively eliminated, and meanwhile the interface bonding effect between the inorganic particles and the TPU matrix is synchronously enhanced. The eTPU foaming material prepared by the invention has the characteristics of high resilience, strong interface bonding, excellent energy storage stability and low compression set, and is suitable for shoe materials, automotive interiors and other scenes.

The invention provides a titanium steel composite plate welding interface bonding force detection method, and relates to the technical field of quality detection.The method comprises the steps that scanning is conducted from the steel substrate side of a composite plate through a single crystal normal probe, and whether an interface has a disconnection area or not is judged by analyzing the amplitude relation between interface echoes and bottom surface echoes; defining a 180-degree arc-shaped scanning path taking the explosive welding direction as a 0-degree reference axis on the surface of the composite board which is judged to be completely combined, and equally dividing the arc-shaped path into four monitoring arc sections; in each monitoring arc section, a water immersion type ultrasonic detection device is adopted, a probe is focused on the steel-titanium bonding interface, scanning is carried out along an arc-shaped scanning path, and interface ripple C scanning imaging pictures of the four monitoring arc sections are obtained respectively. According to the method, through ultrasonic detection and analysis, precise detection of the welding interface of the titanium-steel composite plate from disconnection area screening to bonding strength evaluation is achieved, interface defects can be effectively recognized, and the welding quality reliability is improved.

The invention relates to a high-temperature-resistant polymer binder and a preparation method thereof. The binder is composed of a mixture of resin containing a siloxane unit polyimide main chain and an epoxy group side chain and tannic acid. Wherein the main chain containing siloxane and imide units endows the adhesive with excellent heat-resistant stability, excellent processability and excellent adhesion with glass and ceramic materials, and the adhesive can be cured at room temperature through the epoxy side group; the mixed tannic acid can form strong interface bonding with a polymer film and a metal material through a multiple hydrogen bond network, so that the tannic acid has important application prospects in the fields of semiconductor packaging, thermal interface materials and the like.

The invention relates to the technical field of bridge load tests, and provides a bridge load test crack increment change observation method and system, and the method comprises the steps: collecting prestressing tendon circumferential strain distribution data and dual-wavelength strain response data; calculating an interface bonding stiffness change parameter; pre-stress modulation effect compensation and polar coordinate system conversion are carried out on the strain response data and the rigidity change parameters, and micro-crack characteristic signals are obtained; load data and beam group arrangement parameters are collected, and a micro-crack propagation prediction model is established in combination with the interface bonding stiffness change parameters; inputting the micro-crack characteristic signal into a micro-crack propagation prediction model, and outputting a micro-crack development trend prediction result; and adjusting sampling parameters of a dual-wavelength time division multiplexing algorithm and characteristic extraction parameters of prestress modulation effect compensation according to a micro-crack development trend prediction result. According to the invention, the precision of observing the increment change of the micro-crack in the bridge load test is improved, and the automatic monitoring and prediction of the micro-crack of the prestressed concrete bridge are realized.

The invention discloses an admixture for building formwork concrete, and belongs to the technical field of concrete materials. The admixture for the building formwork concrete, disclosed by the invention, comprises the following components in parts by weight: 65-70 parts of chitosan modified metakaolin; 10 to 15 parts of microencapsulated latex powder; 5 to 10 parts of calcium sulphoaluminate clinker; and 3-5 parts of modified polypropylene chopped fiber. Through reasonable proportioning of the components, the synergistic effect of the different components is brought into full play, and the invention aims to provide the additive for the building formwork concrete, which can significantly improve the thixotropic property, the interface bonding force and the crack resistance of the building formwork concrete and effectively prevent the corrosion of a steel formwork at the same time. The method is suitable for building formwork concrete engineering of a complex grid structure and has remarkable application value.

The invention relates to the technical field of PET materials, in particular to a continuous fiber reinforced high-performance PET material and a preparation method thereof. According to the technical scheme, the PET composite material comprises the following raw materials in parts by weight: 100 parts of PET resin, 30-65 parts of continuous fibers, 1.5-4.5 parts of a hydrolysis stabilizer, 0.8-2.5 parts of a nucleating agent, 2-6 parts of an antistatic agent and 5-15 parts of an interface treating agent composition. Wherein the continuous fibers are three-dimensional orthogonal woven fibers subjected to surface modification treatment, and the interface treating agent composition comprises an epoxy resin emulsion, a silane coupling agent and a nano reinforcing filler. According to the invention, the mechanical property of the PET material is obviously improved, the thermal property of the PET material is improved, the hydrolysis reaction in a high-temperature and high-humidity environment is effectively inhibited, the interface bonding force between fibers and a matrix is enhanced, and the material is endowed with an antistatic function.

The invention discloses a method, a device and equipment for determining interface bonding energy of a laser sintering film and a medium. In the scheme, each film sample is prepared in advance through different laser parameters, and a power exponential function prediction model is generated according to the interface bonding energy and temperature energy ratio of each film sample; when the interface bonding energy of the thin film generated by sintering based on the new laser parameters is evaluated, the temperature energy ratio is obtained only by utilizing to-be-evaluated laser parameter simulation, and then the temperature energy ratio is input into the power exponential function prediction model, so that the interface bonding energy of the thin film under the new laser parameters can be obtained. Visibly, since the temperature energy ratio and the interface bonding energy have extremely strong power exponential function correlation, when the interface bonding energy is determined, multiple tests are not required to be executed, and the interface bonding energy can be quickly and accurately predicted only by determining the temperature energy ratio under the new laser parameter through simulation, so that the optimal laser parameter is found, and the accuracy of the interface bonding energy is improved. The research and development period is greatly shortened; the cost is reduced.

The present invention discloses a laser additive manufacturing titanium-steel multi-material component, its equipment and method for improving interface bonding and forming performance by suppressing element diffusion through an intermediate layer. The laser additive manufacturing titanium-steel multi-material component includes a titanium alloy layer, an intermediate layer, and a stainless steel layer. The intermediate layer includes a single-element metal Ce layer and a single-element metal Cr layer; the titanium alloy layer, the single-element metal Ce layer, the single-element metal Cr layer, and the stainless steel layer are all sequentially deposited by a laser directed energy deposition process. It can be seen that, for the intermediate layer of the present invention, by designing the single-element metal Ce layer and the single-element metal Cr layer, the diffusion of Ti element in the titanium alloy layer and Fe element in the stainless steel layer is blocked through the mutual solubility characteristics of Ce and Cr, and good metallurgical bonding between different materials is achieved, solving the problems such as interface cracking and holes caused by brittle intermetallic compounds when titanium alloy and stainless steel are directly connected.

The invention provides an inner hole plasma spraying high-bonding-strength bonding layer and Y2O3 coating material and a preparation technology thereof. The bonding layer comprises a middle transition layer formed after Si and C on the surface of a graphite matrix are subjected to a chemical reaction. The inner hole plasma spraying high-bonding-strength bonding layer provided by the invention is composed of a silicon carbide transition layer generated by in-situ reaction of molten silicon and carbon on the surface of a graphite matrix, and can form a Si-O-M bridged bond with a subsequent ceramic coating, so that interface bonding is converted into chemical bonding from mechanical anchoring, and the bonding strength is improved. And meanwhile, by utilizing the thermal expansion characteristic of silicon carbide between graphite and ceramic, the purposes of buffering thermal mismatch stress step by step on the atomic scale, blocking high-temperature diffusion of carbon elements and endowing the coating with lasting high bonding strength and thermal cycling stability are achieved.

The invention discloses a coating technology of a self-cleaning glass coating, which adopts a water-based paint containing nano TiO2 / SiO2 hybrid sol (core-shell structure), a polyurethane modified silane coupling agent and a flatting agent, and forms a 150-300nm super-hydrophilic coating (the contact angle is less than or equal to 5 degrees) on the surface of glass through a synergistic process of gradient curing (three-stage heating at 80-150 DEG C) and ultraviolet radiation (a main wave band of 365nm and an auxiliary wave band of 280-320nm). The technology breaks through the bottleneck that low-temperature curing and high adhesive force are difficult to be compatible, and the contact angle of the coating is still lt after damp-heat aging; 10 degrees, the light transmittance loss lt; and 3%, the photovoltaic module is suitable for building curtain walls, automobile windshields and photovoltaic modules. The method comprises the following steps: (1) bonding a polyurethane chain segment with a mechanical interlocking enhanced interface through a hydrogen bond; (2) the SiO2 shell layer improves the TiO2 quantum efficiency; and (3) equipment zoned humidity control and inert atmosphere oxidation inhibition are realized, and unification of self-cleaning performance, optical performance and mechanical durability is realized by an environment-friendly process.

The invention belongs to the technical field of carbon fiber surface treatment, and particularly relates to a cross-linked polymer modified carbon fiber, a preparation method and a composite material. Aiming at the problem of insufficient interface bonding force between the existing polyarylsulfone / ketone thermoplastic sizing agent and the carbon fiber, the core of the invention is to apply a polyarylsulfone / ketone derivative of which a main chain or a side chain is provided with an electrochemically crosslinkable active group to the technical field of carbon fiber surface treatment. And constructing a covalent bond combined three-dimensional network structure coating on the surface of the carbon fiber in situ. According to the method, firm anchoring of the coating and the carbon fibers is achieved, and the interface load transmission efficiency and the interlayer shear strength of the carbon fiber / polyether-ether-ketone composite material can be remarkably improved. The method is mild in process condition, easy in parameter control and convenient in post-treatment, meets green manufacturing requirements, and has remarkable large-scale production advantages.

The invention provides a reflecting mirror gradient curing bonding device and bonding method based on in-situ deformation correction, and belongs to the technical field of optical precision manufacturing. According to the method, the problems of interface thermal stress mismatch and interface bonding dynamics defects existing in a traditional bonding and curing process are solved. The device comprises a temperature control box, a control center, and an industrial camera, a laser interferometer, a first position adjusting mechanism, a second position adjusting mechanism, a positioning clamping mechanism, a force-heat coupling regulation and control module and a gluing mechanism which are arranged in the temperature control box and are in signal connection with the control center. The compound temperature control assembly and the piezoelectric ceramic actuator are controlled to act through the regulation and control main body, the curing temperature of the adhesive layer is controlled through the compound temperature control assembly, and compensation force is applied to the reflector through the piezoelectric ceramic actuator. The method is used for curing and bonding the reflecting mirror and the reflecting mirror bracket.

The invention relates to the technical field of underground building foundation reinforcement and leakage prevention, in particular to an underground building foundation reinforcement and leakage prevention integrated device and method.The device comprises a movable rack, and a jolt ramming mechanism and an air drying mechanism are installed on the movable rack; the primarily-coated coating is impacted and compacted through the first compaction block and the second compaction block, the waterproof coating is powerfully pressed into holes in the inner wall of the foundation pit, a deeply-fused tight bonding layer is formed, and the interface bonding force and adhesive force between the waterproof coating and the inner wall of the foundation pit are greatly enhanced in the process; and the defect of insufficient bonding strength in the prior art is effectively overcome, so that the phenomena of peeling, cracking and overall falling of the waterproof coating in the later period are fundamentally prevented.

The invention relates to the technical field of semiconductor material preparation, and provides a method for improving the interface bonding strength of a SiC coating on the surface of a graphite base material and a product thereof. The method comprises the following steps: S1, placing a graphite base material in a carbon nanotube suspension, and forming a carbon nanotube coating layer on the surface of the graphite base material by adopting an electrophoresis method; s2, the graphite base material treated in the step S1 is placed in chemical vapor deposition equipment, the chemical vapor deposition equipment is vacuumized, and then the deposition equipment is cleaned with inert gas; and S3, mixed gas of silicon carbon source gas, reaction gas and carrier gas is introduced into chemical vapor deposition equipment, and the SiC coating is deposited on the surface of the carbon nanotube coating layer by adopting a chemical vapor deposition process. According to the method, the interface bonding force between the silicon carbide coating and the graphite substrate can be increased, so that the subsequent silicon carbide coating is not easy to peel off in the use process, and the service life and the reliability of the silicon carbide coating material are improved.

The invention belongs to the field of structural adhesives, and particularly relates to an ultrahigh-strength epoxy structural adhesive for a wind power mixing tower and a preparation method of the ultrahigh-strength epoxy structural adhesive. The ultrahigh-strength epoxy structure adhesive for the wind power mixing tower comprises the following raw materials in parts by weight: 45-55 parts of an epoxy resin matrix, 8-12 parts of a curing agent, 18-22 parts of a toughening agent, 13-17 parts of filler and 4-6 parts of a coupling agent. The ultrahigh-strength epoxy structure adhesive for the wind power mixing tower has excellent mechanical performance, aging resistance and fatigue resistance, the epoxy resin matrix and the curing agent can be subjected to a cross-linking reaction to form a three-dimensional network structure, the toughening agent can improve the toughness and impact resistance of the material, and the curing agent can be used for curing the ultrahigh-strength epoxy structure adhesive for the wind power mixing tower. The filler can further improve the strength and wear resistance of the material, and finally the coupling agent improves the interface bonding force of the material. The preparation method disclosed by the invention is simple to operate, convenient to construct and beneficial to large-scale popularization.

The invention discloses a toughening forming method of a high-performance PEI plate for a high-heat-resistance structural part, and particularly relates to the technical field of high-performance composite material forming. Pre-embedding a PEI toughening layer between thermosetting prepreg layers, and controlling the temperature, the pressure, the pressure maintaining time and the heating rate in the hot pressing process; carrying out infrared spectrum or solid nuclear magnetic resonance testing on the interface area sample subjected to hot press molding, and calculating the chain segment residual rate Rp; determining the interface penetration depth Di through a transmission electron microscope in combination with energy spectrum analysis; inputting the Rp and the Di into an interface coupling model, and outputting an interface combination quality factor Q by the model in a form of combining weighted linearity and logarithmic functions; the interface bonding grade is judged according to the Q value, and when the Q value is lower than a threshold value, hot-pressing process parameters are backtracked for optimization; according to the method, quantitative evaluation of the interface performance and process closed-loop optimization are realized, and the interface bonding strength and service reliability of the composite material can be effectively improved.

A durable composite anticorrosive coating for a concrete structure of a road in a cold region belongs to the technical field of building materials, and adopts the specific scheme that the composite anticorrosive coating comprises an inner coating and an outer coating, the inner coating is coated on a concrete base surface, the outer coating is coated on the inner coating, and the outer coating is coated on the outer coating. The inner coating is a single-component epoxy resin interface bonding layer, and the outer coating is a single-component MMA resin sand-containing anti-corrosion layer. Through the composite structure design of the epoxy resin interface bonding layer and the MMA resin sand-containing anti-corrosion layer, the advantages of high permeability and strong bonding characteristics of epoxy resin and the advantages of rapid curing, high wear resistance, wide temperature range (still keeping toughness at-40 DEG C) and good weather resistance of MMA resin are fully played, and the efficient and lasting protection effect is achieved.

The invention relates to the technical field of coating preparation, in particular to a niobium alloy surface thermal spraying coating, a preparation method and application, according to the method, a silicide coating is prepared on the niobium alloy surface, halide reaction embedding siliconizing treatment is conducted, and the niobium alloy surface thermal spraying coating is obtained; the silicide coating is prepared on the surface of the niobium alloy through the thermal spraying technology, the rough surface can be formed, anchoring sites are provided for follow-up halide reaction embedding siliconizing treatment, in the follow-up halide reaction embedding siliconizing treatment process, silicon is diffused to a base body to react to form a siliconizing diffusion layer, and metallurgical bonding of a coating-base body interface is achieved. In addition, a continuous transition area is formed between the siliconizing diffusion layer and the silicide coating, stress concentration caused by component mutation is reduced, the risk of interface cracking is effectively reduced, the service life of the coating is prolonged, and the problems that in the prior art, the interface bonding force between a thermal spraying MoSi2-based silicide coating and a base body is poor, and the service life is short are solved.

The invention provides a two-section type sole structure, a preparation process thereof and a shoe with the two-section type sole structure, and belongs to the technical field of shoemaking. The two-section type sole structure comprises a front-section foaming outsole, a rear-section foaming outsole and a middle rubber connecting piece for connecting the front-section foaming outsole and the rear-section foaming outsole; and the front section foaming outsole and the rear section foaming outsole are provided with lap joint surfaces in lap joint areas with the middle rubber connecting sheet. By optimizing the hardness, the thickness and the lap joint process of the middle rubber connecting piece, the deflection resistance and the interface bonding durability of the bending area are effectively improved.

The invention belongs to the field of polymer composite materials, and discloses an antistatic composite material for a safety helmet and a preparation method of the antistatic composite material. Comprising the following components: 70 to 90 parts of a PC / ABS blending matrix, 12 to 20 parts of basalt fiber treated by a titanate coupling agent NDZ-311, 4 to 8 parts of a graphene quantum dot modified carbon nanotube-polyethylene glycol composite antistatic agent, 3 to 6 parts of polyaryletherketone micro powder, 0.2 to 0.6 part of an antioxidant 1010 and 0.4 to 1.0 part of calcium stearate. Wherein the mass ratio of PC to ABS in the PC / ABS blended matrix is (6: 4)-(7: 3); the invention aims to solve the problems that in the prior art, a single antistatic agent is difficult to consider the antistatic effect and the mechanical property, or materials are embrittled due to high addition amount, or the antistatic property fluctuates along with the environment and is easy to lose due to low addition amount; the interface bonding force between the conventional reinforced fiber and the PC / ABS matrix is weak, and the mechanical strength is limited to be improved; the long-term aging resistance of the material is poor, and the long-term use requirements of outdoor, chemical and other severe environments cannot be met.

The present invention discloses a high-strength silicon nitride ceramic material and a preparation method thereof, relating to the technical field of ceramic materials and their preparation. The high-strength silicon nitride ceramic material comprises a material layer, a coloring layer, a transition layer and a diamond coating from bottom to top. The ceramic material of the present invention achieves the comprehensive properties of lightweight, high strength and toughness, superhard wear resistance, efficient heat dissipation and corrosion resistance through carbon fiber reinforced phase interface modification, gradient TiCN transition layer design and diamond coating laser microstructuring, and improves the mechanical properties and interface bonding stability of the material. At the same time, it supports multi-color customization, such as black, bronze and yellow. The diversified selection expands the decorative and functional application scenarios of the material. In addition, the introduction of polishing equipment and laser microstructuring technology in the preparation process further optimizes the surface quality and wear resistance, so that the ceramic material has high strength and toughness, corrosion resistance and process controllability.

The utility model relates to the technical field of composite material preparation, in particular to a thin-wall composite material plate structure with a hollow runner inside, which is formed by co-curing an upper composite material panel, a lower composite material panel and a runner layer clamped between the upper composite material panel and the lower composite material panel through resin, the problems that in a traditional technology, a flow channel is prone to being blocked, and interface bonding is weak are solved, and the heat pipe has the advantages of being good in structural integrity, excellent in sealing performance, light in weight and high in strength and is particularly suitable for heat management structural parts in the fields of aerospace, new energy automobiles, high-end equipment and the like.

The invention discloses a preparation method of a ceramic reinforced metal matrix composite material based on atomic layer deposition coating. The preparation method comprises the following specific steps: 1, pretreatment of ceramic particles: surface cleaning, roughening treatment and surface activating treatment; 2, ceramic particle surface atomic layer deposition coating: preheating, precursor gas introduction, inert gas purging, oxygen source supply, inert gas secondary purging, cooling and annealing; and 3, preparation of the ceramic reinforced metal-based composite material: preparing a honeycomb-shaped ceramic prefabricated body, and pouring molten metal to obtain a ceramic reinforced metal-based composite material product. The atomic layer deposition technology is utilized, Al2O3, Ni or TiO2 films are deposited on the surfaces of the ceramic particles to improve the interface bonding force between the ceramic particles and the matrix, the surface films are uniform and compact, meanwhile, the thickness of the films can be accurately controlled, the wettability between the ceramic particles and the metal matrix is effectively improved, and the ceramic particles can be prepared. And the interface bonding force between the metal matrix and the ceramic particles is obviously improved.

The invention discloses a cutter composite coating, a preparation method and a cutter, and relates to the technical field of material surface treatment. An AlTiTaN base serves as a base layer attached to a tool base body, a tetrahedron amorphous carbon film layer serves as a functional top layer, and a transition layer with the AlTiTaN base / carbon element proportion gradually changing is arranged between the base layer and the top layer and serves as a supporting and combining part. The problem that in the prior art, due to the fact that the interface bonding force between a tool base body and a strengthening coating is weak, and the internal stress is large, the service life of a tool is short or the machining quality of the tool is poor is effectively solved. Besides, an innovative low-temperature deposition process is further developed for the coating, temperature contradiction in the deposition process is effectively coordinated, firm combination with the top layer can be achieved on the premise that the performance of the AlTiTaN base layer is not sacrificed, and the service life of the AlTiTaN base layer is prolonged. Therefore, the comprehensive performance coating with ultrahigh wear resistance, excellent lubricity, high bonding strength and long service life and the corresponding cutter are obtained.

The invention discloses a high-temperature-resistant polycrystalline wire-drawing die and a preparation method thereof, and relates to the technical field of wire-drawing dies, the die comprises a boron carbide whisker reinforced silicon carbide ceramic matrix, a modified composite polycrystalline working layer and a titanium carbide-tungsten carbide-cobalt multiphase gradient transition layer between the boron carbide whisker reinforced silicon carbide ceramic matrix and the modified composite polycrystalline working layer; the working layer contains coarse and fine graded diamond particles, tungsten carbide-titanium carbide composite particles and a rare earth modified cobalt-nickel alloy binding agent. The preparation method comprises the steps of matrix preparation, pretreatment, gradient transition layer spraying, rare earth modified binding agent preparation, polycrystalline material mixing, compression molding and step-by-step sintering. According to the invention, the matrix toughness is enhanced by the whiskers, the wear resistance and high temperature resistance of the working layer are enhanced by the graded particles and the modified binding agent, and the interface combination is optimized by the gradient transition layer, so that the problems of fragile matrix, easy damage of the working layer and easy stripping of the interface of the traditional mold are solved, the overall service performance of the mold is obviously improved, and the mold is suitable for industrial production.