159 results about "Interface bond" patented technology

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 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 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 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 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 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.

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 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 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 preparation method of a voltage-breakdown-resistant anticorrosive functional filler, and belongs to the field of preparation of coating fillers. The boron nitride nanosheet is subjected to surface amination modification, then zinc molybdate grows in situ, finally, ester compound hydrolytic condensation is utilized for surface treatment, and the composite filler with multiple functions of physical shielding, efficient insulation and active corrosion inhibition is successfully constructed. According to the method, not only can the dispersity and interface bonding force of the filler in the resin be effectively improved and the defects of the coating be reduced, but also the insulation barrier characteristic of boron nitride and the electrochemical anti-corrosion effect of zinc molybdate can be synergistically exerted, so that the long-term corrosion resistance and high-voltage electric breakdown resistance of the coating in a severe environment can be remarkably enhanced.

The invention discloses a strong interface bonding wear-resistant polyurethane floor coating as well as a preparation method and application thereof, and relates to the technical field of floor coatings. The invention relates to a strong interface bonding wear-resistant polyurethane floor coating which comprises the following components in parts by weight: an interface strengthening component; a wear-resistant film-forming component; an auxiliary agent component; the interface strengthening component comprises 8-12 parts of interface bridging microspheres and 7-13 parts of an auxiliary compatilizer. According to the invention, the interface bridging microspheres are introduced to construct a physical-chemical synergistic strong interface, and the gradient wear-resistant filler and a compact cross-linked network are matched, so that the problems that the interface bonding of the floor coating is weak, the filler is easy to fall off and the low-temperature curing is difficult are fundamentally solved; the prepared coating shows excellent adhesive force retentivity, ultrahigh hardness and wear resistance, excellent chemical resistance and wide temperature range construction adaptability, the comprehensive performance is remarkably improved, and the long-acting protection requirement of a harsh industrial environment is completely met.

The application discloses a sintered neodymium-iron-boron composite coating with high bonding force and high hydrogen resistance and a preparation method thereof. The method comprises the following steps: (a) substrate pretreatment, wherein surface oxides are removed by energy gradient plasma sputtering cleaning; (b) sputtering an Al layer under an Ar atmosphere and oxidizing under O2 plasma assistance, thereby generating an intermetallic compound anchoring layer of FeAl3 / NdAl2 with a thickness of 1.0-1.5 nm in situ; (c) sequentially depositing 6 layers of Al2O3 layers to form an alternating stack with a total thickness of 20-30 nm, wherein the first, third and fifth layers are prepared by directly sputtering an Al2O3 ceramic target, and the second, fourth and sixth layers are prepared by first sputtering an Al layer and then completely converting by O2 oxidation; (d) low-temperature annealing to fully form Al-O-Fe bonds at the interface; and (e) cooling to room temperature. The application adopts a multi-dimensional in-situ closed-loop monitoring system to realize accurate process control, and is suitable for surface protection of sintered neodymium-iron-boron permanent magnets in hydrogen energy equipment.

The invention relates to the technical field of printed circuit board manufacturing, in particular to a thermal interface bonding method of a copper-clad laminate, which comprises the following steps of: 1, cleaning the surfaces of a copper foil and an insulating base material, removing surface pollutants, and measuring the contact angle of water on the surfaces of the copper foil and the insulating base material through a contact angle measuring instrument; 2, performing low-temperature oxygen plasma activating treatment on the cleaned surfaces of the copper foil and the insulating base material; 3, forming a thermal stress buffer layer on the surfaces of the activated copper foil and the insulating base material; 4, carrying out thermocompression bonding, wherein temperature, pressure and time parameters of thermocompression bonding are dynamically optimized according to thickness data and surface energy data of the buffer layer; and step 5, carrying out post-curing treatment on the copper-clad laminated board subjected to primary bonding. Through cleaning, low-temperature oxygen plasma activation and the addition of the thermal stress buffer layer, the surface quality and thermal stability of the copper foil and the insulating base material are effectively improved.

The present application relates to a kind of multilayer circuit board manufacturing method of embedding special-shaped metal base, provide integrally formed special-shaped metal base, it includes main part and expansion part, expansion part is protruding on at least two opposite sides, increase the overall volume of metal base and the contact area with multilayer board under the premise of not invading device layout space;Subsequently, milling groove processing is carried out to multilayer core plate and prepreg, first groove body matching the outer contour of expansion part is milled on the bottom layer core plate, and second groove body matching the outer contour of main part is milled on each layer above it;After special-shaped metal base is embedded in corresponding groove body, hot pressing is carried out, so that the upper surface of main part is flush with the upper surface of top layer core plate, prepreg flows and solidifies as PP flow glue layer by heat, PP flow glue layer fills the gap between interface continuously, significantly improve the interface bonding strength;Finally, electroplating treatment is carried out, and electroplating layer is formed on the upper surface of main part and top layer core plate, with electrical conduction and secondary reinforcement function.

An interface bonding failure test method, system, storage medium and program product, relate to the field of testing or analyzing materials by means of determining chemical or physical properties of materials, in the method, the interface bonding state between the pole piece coating and the current collector is evaluated by performing a single loading and unloading cycle. In the loading stage, a first resistance value is measured when the pressure reaches a preset target detection pressure, and then the pressure is continuously increased to a preset peak pressure (the pressure is greater than the target detection pressure but less than the yield strength of the current collector). In the unloading stage, a second resistance value is measured when the pressure decreases back to the preset target detection pressure. By comparing the difference between the two resistance values with a preset hysteresis threshold, the interface bonding state is determined: if the difference is greater than the threshold, it is determined that there is interface bonding failure. The present application is used to reduce the difficulty of identifying overpressure risk and defining the best roll pressure process window.

The invention discloses an adhesive bonding quality evaluation method and system based on stress distribution identification. The method comprises the following steps: firstly, acquiring actual stress data of a target component, carrying out incremental load excitation on a standard bonding component, and collecting a bonding interface stress signal; the multi-scale energy features of the stress signals are extracted through wavelet packet decomposition, and optimization features are obtained after exception processing. Next, performing stress propagation path tracking in the three-dimensional model, discretizing a continuous path into a Markov hidden state sequence, and constructing a stress propagation hidden Markov model representing the standard bonding quality; and for a to-be-evaluated component, extracting a stress multi-scale energy characteristic sequence under a preset load as an observation sequence, and inputting the observation sequence into the model for path fitting to obtain a fitting likelihood. And finally, quantitatively evaluating the bonding quality according to the likelihood. According to the method, through stress propagation path modeling, accurate identification of the interface bonding defects is realized.

This invention belongs to the field of powder metallurgy technology and relates to a method for in-situ refining wear-resistant high-alloy steel carbides and its application. The method includes the following steps: selecting raw materials with low intrinsic thermal conductivity, good bending strength, and lightweight potential; preheating and homogenizing the raw materials; and pressure forming followed by slow cooling. This invention significantly solves the inherent problem of coarse carbide growth in high-alloy steel by introducing novel multi-element substitution phases, resulting in a significant Zener pinning effect; and exhibits excellent and uniform interface bonding with the original carbides and matrix in the high-alloy steel. This invention, combining a specific pressure forming process and a small amount of additive phases, has a simple preparation process, and the resulting material exhibits outstanding high-temperature resistance, good density, excellent microhardness, strong crack resistance, oxidation resistance, and red hardness. It can be used as a wear-resistant mold at higher temperatures and has good application prospects in radiation-resistant environments.

The invention discloses a high-strength corrugated pipe for drainage and a manufacturing method thereof, and belongs to the technical field of corrugated pipes. The corrugated pipe comprises the following components in parts by weight: 50-75 parts of PVC, 8-15 parts of HPVC, 5-15 parts of HNBR, 5-10 parts of a modified filler, 4-8 parts of a toughening agent, 1-2 parts of an antioxidant, 1-3 parts of a heat stabilizer and 0.4-1.1 parts of a lubricant. The high-strength corrugated pipe for drainage is prepared by mixing the raw materials according to the formula at a high speed, then adopting a one-step continuous extrusion molding process, and carrying out plasticizing, extrusion, blow-up shaping and traction cutting under accurately controlled temperature parameters and blow-up pressure. Compared with the prior art, the high-strength corrugated pipe for drainage fundamentally solves the problems of poor filler dispersity and weak interface bonding through a multi-layer synergistic effect. Tests show that the corrugated pipe has high ring stiffness and excellent low-temperature impact resistance, is long in service life and is particularly suitable for high-standard drainage projects.

The application discloses a fiber-reinforced anti-cracking concrete and a preparation method thereof, and relates to the technical field of building materials, and comprises the following raw material components: cement 310-450 parts, water 150-190 parts, coarse aggregate 930-1200 parts, fine aggregate 630-800 parts, mineral active admixture 80-180 parts, multi-component composite fiber 1.2-18 parts, polycarboxylate superplasticizer 1.8-4.5 parts, and anti-cracking synergistic system 20-35 parts. The four-component fiber system is used to form a three-dimensional interlocking net-shaped anti-cracking framework in the concrete slurry, so that the problems of limited single-fiber reinforcing effect and insufficient interface bonding force between the fiber and the concrete matrix are solved, and the anti-cracking performance and the mechanical properties of the concrete are improved.

An existing heat-conducting / high-heat-conducting phase-change composite film based on interaction of interface zwitterions has the defects that the interface thermal resistance between layers is high, a phase-change material is prone to leakage, and the synergistic efficiency of functional layers is low. In the prior art, physical blending or simple stacking is mostly adopted, the interlayer binding force is weak, the transfer efficiency of heat between a phase change layer and a heat conduction layer is low, and efficient heat management of a high-power-density electronic device cannot be met. According to the invention, an intelligent structure with external conduction, internal storage and ionic bonding is constructed. The outer layer is made of anionic high-thermal-conductivity polyurethane, is responsible for rapidly diffusing heat and is also used as a packaging shell; the inner layer is cation modified paraffin and is responsible for absorbing and buffering pulse heat; the inner layer and the outer layer realize strong interface bonding through anion-cation electrostatic attraction, and thermal resistance is weakened. The interface bonding between the heat conduction layer and the phase change layer is strengthened fundamentally, and an efficient, stable and low-heat-resistance heat transfer channel is constructed.

The application provides a method for evaluating interface bonding strength of plant fiber reinforced plastic, and belongs to the technical field of bio-based composite materials. In the application, the Dijkstra shortest path algorithm is used to calculate the path cost from the center position of a sample to each candidate emission point and select the candidate emission point with the minimum path cost as an optimized emission point. The optimal emission direction angle and optimal emission frequency are determined by performing fine search on the optimized emission point position according to the transmission signal propagation time and frequency attenuation value. Finally, the optimal parameters are used for ultrasonic transmission testing on all test points to establish an ultrasonic characteristic response matrix and input an interface quality evaluation model to output an interface bonding strength prediction value. The technical problem of insufficient detection accuracy caused by the difficulty in self-adaptive optimization of ultrasonic detection parameters during the evaluation of the interface bonding strength of plant fiber reinforced plastic is solved.

The invention discloses a composite material and a preparation method thereof. The flax waste is subjected to low-viscosity resin infiltration and compaction treatment to form a compact core layer, the core layer can be further processed into plates or structural parts with different interface structures according to needs, a natural fiber woven prepreg layer is attached to the outer surface of the core layer, secondary compaction and curing are achieved through mold pressing or hot pressing, and the integrally-formed composite material is obtained. The strength, modulus and moisture-proof stability of the plant waste core layer are improved, the natural fiber layer enhances the interface bonding and bending performance, and the composite material is suitable for the fields of buildings and engineering and has high bio-based content and good structural performance.

The invention discloses a forming method of a wave-absorbing functional layer of a composite material launch canister in the technical field of composite material launch canister forming, which comprises the following steps of: S1, carrying out surface treatment on a mold, paving adhesive demolding cloth on the surface of the treated mold, and vacuumizing and compacting; s2, wave-absorbing prepreg is laid on the effective laying area on the mold subjected to surface treatment, so that a wave-absorbing sacrificial layer is formed; s3, paving a wave-absorbing prepreg on the wave-absorbing sacrificial layer to form a wave-absorbing functional layer; and S4, the mold obtained after paving is completed is packaged, and pre-curing treatment is carried out. According to the invention, the wave-absorbing functional layer is subjected to pre-curing treatment, so that the wave-absorbing functional layer is shrunk in advance, and the adhesive film consistent with the curing system of the wave-absorbing prepreg and the carbon fiber prepreg is matched, so that the curing shrinkage rate difference between the wave-absorbing functional layer and the carbon fiber structural layer is effectively reduced, and the interface bonding force between the wave-absorbing functional layer and the carbon fiber structural layer is remarkably improved; and the problem of interlayer cracking after the component is cured is fundamentally avoided.

The present application relates to the technical field of high polymer materials, and particularly relates to a preparation method of wear-resistant / low-dielectric PTFE composite material based on interface functionalization. Ammonia / hydrogen mixed gas is used to perform low-temperature plasma treatment on PTFE powder; then the activated PTFE powder is dispersed in an aqueous solution containing ammonium perfluorooctanoate and 4-dimethylamino pyridine; then an organic phase of pyromellitic acid dichloride and an aqueous phase of 4,4'-diamino diphenyl ether are synchronously added dropwise to implement in-situ interface polymerization on the surface of PTFE particles to generate a polyamide acid ammonium salt coating layer; finally, through programmed temperature rising, the coating layer is converted into polyimide, and under the action of hot pressing, a composite material with PTFE as a matrix and a three-dimensional network of polyimide nanofibers penetrating through the inside is formed. The interface bonding force between the reinforcing phase and the PTFE matrix is significantly enhanced, so that the composite material simultaneously has excellent wear resistance, low dielectric constant, high mechanical strength and thermal stability.

The invention discloses a preparation method of a composite wear-resistant part based on a powder metallurgy thin shell and casting, which comprises the following steps: mixing WC-Co powder with Cr and Al powder, carrying out ball milling to obtain modified powder, and pressing the modified powder into a thin shell with a linear gradient pore structure which is dense inside and sparse outside; performing Ar plasma activation on the thin shell and performing chemical vapor deposition on a SiC coating; fixing the thin shell on the wear-resistant surface of the sand core by using a high-temperature binder, and prefabricating honeycomb-shaped through micropores by laser; pouring high-chromium cast iron molten iron under the protection condition, wherein the molten iron permeates into the gradient pores and forms metallurgical bonding with the micropores; and finally, the casting is subjected to staged accelerated cooling, and a hardness gradient transition area is formed at an interface. According to the preparation method, high-strength combination of the hard thin shell and the metal matrix is achieved through a double interlocking mechanism of gradient pore permeation and micropore pinning and metallurgical bonding promoted by the SiC coating, and the prepared wear-resistant part is high in interface bonding strength, good in wear resistance and high-temperature stability and suitable for parts in complex shapes.

The invention discloses a rare earth ion doped beta-SiAlON / h-BN composite ceramic and a preparation method thereof, and relates to the technical field of ceramic materials, the original powder of the composite ceramic comprises hexagonal boron nitride (h-BN) powder, alpha-silicon nitride (alpha-Si3N4) powder, rare earth oxide (Re2O3) powder (Re = Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and Sc) and aluminum oxide (Al2O3) powder, the volume ratio range of h-BN to alpha-Si3N4 is 8: 2-5: 5, and the volume ratio range of alpha-SiAlON / h-BN is 1: 2-3: 5. And 5-15 vol% of Re2O3-Al2O3 (the molar ratio is 3: 5) is additionally added. The preparation method comprises the following steps: weighing the raw materials according to the proportion, carrying out ball milling and mixing on the raw materials, zirconium oxide balls and absolute ethyl alcohol, then drying, loading into a graphite mold, and carrying out hot pressed sintering at 1700-1900 DEG C and 10-40MPa in a nitrogen atmosphere to obtain a finished product. According to the method, the rare earth ion doped beta-SiAlON phase is generated in situ in the sintering process, interface bonding with an h-BN matrix is improved, the problems that traditional h-BN is difficult to sinter and low in mechanical property are effectively solved, and the composite ceramic has excellent characteristics of the rare earth ion doped beta-SiAlON and the h-BN and is suitable for the field of ceramic materials with advanced structures.

The application discloses a metal coating corrosion peeling area prediction method and system, and the method comprises the following steps: synchronously collecting a rust distribution image of a coating surface and multi-point thickness data, generating a multi-dimensional coating state fusion image containing rust spot morphology characteristics and thickness distribution information; performing rust area segmentation and feature quantization on the multi-dimensional coating state fusion image, and constructing a coating state feature matrix containing multiple feature parameters; inputting the coating state feature matrix into a neural network prediction model, and outputting an interface bonding strength attenuation index; according to the interface bonding strength attenuation index, each area in the image is sorted and classified, and a potential failure area early warning sequence arranged according to peeling risk levels is generated. By using the embodiment of the application, the peeling risk area can be positioned and sorted early and accurately, and the objectivity of prediction and the initiative of maintenance are improved.

The invention discloses a manufacturing method and device of an anti-collapse HBPE pipe, and relates to the technical field of pipeline preparation. Through the arrangement of a first extrusion forming mechanism, a first gluing mechanism, a second extrusion forming mechanism, a second gluing mechanism and a third extrusion forming mechanism, the anti-collapse HBPE pipe is manufactured through the sequential and continuous extrusion-gluing-extrusion-gluing-extrusion process; synchronous composite forming of the five-layer structure of the inner layer, the first bonding layer, the blocking layer, the second bonding layer and the outer layer is achieved. The layers are subjected to interface bonding through the corresponding bonding layers in a high-temperature molten state instead of being subjected to secondary compounding or bonding after being cooled and cured, so that the interlayer bonding strength is improved. Even if the pipe is subjected to external pressure, temperature change or long-term internal pressure, the interlayer does not have obvious peeling or separating tendency, so that the risk of layering collapse is effectively reduced, and the long-term safe operation reliability of the HBPE high-barrier lining pipe in the scenes of oil field and gas pipeline repair and the like is guaranteed.