993 results about "Ceramic composite" patented technology

The invention provides an additive manufacturing method of a short fiber reinforced ceramic composite aircraft engine swirler, which comprises the following manufacturing steps: performing interface preparation on the fiber surface to obtain composite powder, and mixing the powder with silicon carbide powder and resin to obtain mixed powder; carrying out selective laser sintering printing molding on the mixed powder to obtain a ceramic green body, and carrying out degreasing treatment to obtain an intermediate; performing two-step impregnation and cracking on the intermediate through a ceramic precursor and resin to obtain a preform 2, performing gas / liquid phase reaction sintering treatment on the preform 2 to obtain Cf / SiC ceramic, depositing silicon carbide on Cf / SiC through a chemical vapor infiltration method, and performing abrasive flow grinding and polishing to obtain a finished product. The short fiber reinforced silicon carbide powder precise printing forming swirler is achieved, fiber, silicon carbide and resin powder are subjected to composite granulation, fiber agglomeration is weakened, the powder density is increased, the cohesive force between carbon fibers is increased, and therefore the biscuit density is increased; and structure accurate forming and surface quality control of the swirler with the complex structure are facilitated.

The invention belongs to the technical field of ceramics and slurry thereof, and particularly relates to fiber-reinforced ceramic photocuring slurry, a preparation method and a reinforced ceramic material. The slurry provided by the invention consists of ceramic powder, ceramic composite short fibers, light-cured resin, a photoinitiator, a dispersing agent, a plasticizer and the like, wherein the ceramic composite short fibers are zirconium oxide and silicon oxide composite fibers; the light-cured resin contains a photosensitive resin monomer and a prepolymer; and the photoinitiator is compounded by a short-wavelength initiator and a long-wavelength initiator. The preparation method comprises the following steps: modifying the ceramic composite short fibers with a silane coupling agent, mixing the modified ceramic composite short fibers with all the materials, and carrying out ball milling and defoaming. The obtained slurry is subjected to 3D printing photocuring molding and degreasing sintering, and a reinforced ceramic material can be prepared. The slurry can be used for manufacturing a high-performance ceramic material through composite short fiber synergistic enhancement, long and short wavelength initiator synergistic curing and fiber surface modification, and the curing depth, the three-point bending strength and the fracture toughness are remarkably improved.

The invention discloses a polytetrafluoroethylene ceramic membrane and a preparation method and application thereof, and the preparation method comprises the following steps: (1) adding polytetrafluoroethylene and a binder into water, and carrying out first mixing to obtain polytetrafluoroethylene slurry; adding a carbon nanotube and a dispersing agent into water, and carrying out secondary mixing, so as to obtain a carbon nanotube dispersion liquid; (2) carrying out third mixing on the carbon nanotube dispersion liquid and the polytetrafluoroethylene slurry to obtain a membrane preparation liquid; and (3) coating the surface of a ceramic support with the membrane preparation liquid, drying, and carrying out microwave sintering. The PTFE / ceramic composite membrane is prepared by microwave sintering, so that the sintering time and the production period are obviously shortened, and the production efficiency and the energy utilization rate of the product are obviously improved; the prepared PTFE / ceramic composite membrane is narrow in pore diameter and uniform in pore diameter distribution, has good hydrophobicity and oil-water separation performance, can effectively intercept 30-200nm nanoparticles, and has excellent anti-pollution capacity and stable separation performance for water-in-oil emulsions with different concentrations.

The invention belongs to the technical field of advanced metal ceramic composite materials, and particularly relates to high-toughness Ti (C, N)-based metal ceramic and a preparation method and application thereof. The high-toughness Ti (C, N)-based metal ceramic comprises the following components in percentage by weight: 50 to 70 percent of solid solution, 15 to 25 percent of metal binding phase, 0.1 to 0.5 percent of rare earth oxide or rare earth salt and 15 to 25 percent of carbide phase, the solid solution contains an amplitude-modulated decomposition structure. The solid solution hard phase with an amplitude modulation decomposition structure is reserved in the alloy containing a certain amount of metal binder, so that the metal ceramic material has higher fracture toughness, bending strength and high-temperature toughness compared with traditional Ti (C, N)-based metal ceramic under the condition that the hardness is kept unchanged.

The present invention relates to the field of carbon-carbon composite materials, and discloses a carbon-carbon composite material, a carbon-ceramic composite material, an anti-oxidation coating, and an aircraft brake disc. The anti-oxidation coating comprises components by weight: 150 parts of an aqueous solution of aluminum dihydrogen phosphate with a content of 37-43%, 70-130 parts of tin powder, 60-120 parts of silicon carbide powder, 15-60 parts of glass powder with a softening point of 600°C-900°C, 15-50 parts of kaolin, and 10-30 parts of boron carbide powder. The anti-oxidation coating can form a coating with good thermal stability and chemical stability by accurately proportioning and mixing a plurality of materials, and can protect the carbon-carbon composite material from oxidation under a high temperature environment.

The invention belongs to the technical field of quartz ceramics, and particularly relates to a thermal shock resistant quartz fiber reinforced quartz ceramic composite material and a preparation method thereof. The preparation method of the thermal shock resistant quartz fiber reinforced quartz ceramic composite material comprises the following steps: S1, pretreating quartz fibers; s2, dipping the pretreated quartz fibers in first silica sol to prepare coating quartz fibers; s3, the coated quartz fibers are placed in second silica sol to be subjected to dipping forming treatment and high-temperature calcination, and the thermal shock resistant quartz fiber reinforced quartz ceramic composite material is obtained. The composite material disclosed by the invention can realize good thermal shock resistance, meanwhile, the bending strength is improved, the dielectric constant and the loss tangent value are reduced, and the composite material has a very good application prospect.

The invention provides a robot additive manufacturing device and method for ultrasonic-assisted continuous preparation of a composite fiber ceramic composite, and belongs to the field of composite fibers.The robot additive manufacturing device comprises the steps that a first feeding mechanism outputs a fiber bundle; the heating cavity is filled with a molten resin material; the first ultrasonic mechanism and the second ultrasonic mechanism are oppositely arranged on two inner walls of the heating cavity; the first ultrasonic mechanism and the second ultrasonic mechanism are symmetrically arranged on the two sides of the fiber bundle transmission direction, and the ultrasonic wave emission direction of the first ultrasonic mechanism and the second ultrasonic mechanism is the perpendicular direction of the fiber bundle transmission direction. When passing through the heating cavity, the fiber bundles are subjected to the effect of ultrasonic waves, fiber filaments in the fiber bundles are scattered and evenly distributed, the fiber filaments are wrapped by the resin material, and then the high-performance fiber-reinforced ceramic composite material is prepared after high-temperature ceramic treatment. Through the synchronous ultrasonic assistance-mechanical arm forming technology, the problems that in the prior art, due to the fact that the resin fluidity is poor and fibers are highly agglomerated, the fibers are difficult to evenly wrap by the resin, obvious pores appear in the subsequent ceramic treatment process, and fiber distribution is uneven are solved.

The invention discloses a high-thermal-conductivity PI / ceramic composite insulation packaging sheet and a preparation method thereof, and relates to the technical field of electronic packaging. The high-thermal-conductivity PI / ceramic composite insulation packaging sheet is obtained by mixing a modified polyimide solution and modified ceramic particles according to the mass ratio of (9-13): 1 and then performing high-temperature curing. The modified polyimide solution is obtained by mixing a dianhydride monomer and a diamine monomer in a molar ratio of 1: 1, and 2-methyl-2-acrylic acid-2, 3-dihydroxy propyl ester accounting for 5-10% of the total molar weight, and adding a catalyst for catalysis; the modified ceramic particles are obtained by adding hydroxymethyl acrylamide into a ceramic suspension, mixing, filtering, washing and drying. The packaging sheet prepared by the invention has high thermal conductivity, keeps stable at a relatively high temperature, is not easy to thermally deform, and has relatively high stability.

The invention discloses a production process of high-strength anti-distortion cold-rolled strip steel. The production process comprises the links of raw material preparation, cold rolling, heat treatment, surface treatment and quality detection. Selecting medium-carbon steel with specific components as raw materials, and controlling the tolerance of hot-rolled strip steel; a six-roller unit is adopted for multi-pass rolling in cold rolling, and a plate shape control technology is matched; continuous annealing and gradient quenching-isothermal tempering are applied to heat treatment, so that a specific structure gradient is formed, and the distortion rate is reduced; the surface is subjected to acid pickling, hot galvanizing and a nano ceramic composite coating, so that the corrosion resistance and the wear resistance are improved; and the quality is guaranteed through online detection and sampling inspection. The strip steel produced through the technology is high in strength, good in toughness, high in corrosion resistance and suitable for the high-requirement field.

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.

Systems, structures, devices, and fabrication processes for ceramic matrix composites suitable for use in a nuclear reactor environment and other applications requiring materials that can withstand high temperatures and / or highly corrosive environments are disclosed. In one aspect, a ceramic composite structure is provided. The structure comprises a chamber including an external shell and a hollow space inside the external shell. The external shell includes an inner composite layer including a first composite structure, a middle composite layer placed outside of the inner composite layer, the middle composite layer including a second composite structure that is different from the first composite structure, and an outer monolithic layer that has a spatially uniform material property and placed outside of the middle composite layer.

The invention provides a preparation method of a metal-based ceramic composite membrane with a catalytic ozone function. The preparation method comprises the following steps: preparing functional powder by taking tetrabutyl titanate as a titanium source and silver nitrate or ferric nitrate as a catalytic active metal source and adopting a sol-gel method; a porous metal pipe is used as a supporting body, metal powder and functional powder which are made of the same material as the supporting body are mixed to prepare functional slurry, the functional slurry is evenly deposited on the inner wall of the supporting body through vacuum filtration, and powder particles which are not firmly combined are removed through back flushing; and finally, the binding force between the functional film layer and the metal matrix is improved through high-temperature heat treatment. Wherein the thermal expansion coefficient difference between the metal supporting body and the functional film layer can be reduced by adding the metal powder, the metal powder is melted and diffused in the high-temperature heat treatment stage, and metallurgical bonding is formed between the functional powder and the metal substrate. The method is simple in process, and the prepared metal-based ceramic composite membrane has the advantages of being high in membrane layer binding force, not prone to falling off, high in catalytic activity, high in anti-pollution capacity, stable in operation and the like.

The invention discloses a preparation method of a high-density carbon-carbon composite material, which comprises the following steps: soaking a needled prefabricated body in a resin mixed solution, vacuumizing and dipping, drying in a drying oven, then putting into a mold, carrying out hot-pressing curing molding, and carbonizing to obtain the high-density carbon-carbon composite material. According to the preparation method, the carbon-carbon composite material with the density larger than 1.2 g / cm < 3 > can be obtained through one-time dipping and one-time hot pressing, the production period is short, energy consumption is low, the production cost is remarkably reduced, and the carbon-ceramic composite material with the density larger than 1.2 g / cm < 3 > can be obtained through one-time dipping and one-time hot pressing. And the prepared carbon-carbon composite material can achieve a high-density effect when the density is low, and has the characteristics of good air tightness, difficulty in deformation at high temperature and the like.

The invention discloses a preparation method of surface metallized ceramic particles and a ceramic wear-resistant accessory, and mainly solves the technical problems of high cost, poor product performance, low yield and the like in the existing ceramic composite material preparation method. The preparation method of the surface metallized ceramic particles comprises the steps that wrapping alloy and ceramic particles with the volume ratio being (0.5-1.5): (8.5-9.5) are prepared, and the wrapping alloy comprises active metal, auxiliary welding metal and melting metal with the mass ratio being (15-40): (60-80): (0-10); the method comprises the following steps: mixing ceramic particles and a coating alloy, filling the mixture into a coating reaction tube, vacuumizing, heating, injecting reducing gas and / or protective gas, vacuumizing again, heating, completely reducing surface oxides of auxiliary welding metal and melting metal, vacuumizing again, heating to 900-1250 DEG C, melting the coating alloy, preserving heat, keeping the temperature at normal temperature, and cooling to room temperature. And surface metallization ceramic particles are obtained. The method is short in time, low in energy consumption and higher in production efficiency.

The invention provides a PCBN composite material and a preparation method thereof.The preparation method comprises the steps that two or more of zirconium oxide, titanium nitride, silicon nitride, titanium diboride, silicon carbide, titanium carbide, titanium carbonitride, aluminum oxide and aluminum nitride are mixed, and ceramic composite powder is prepared; the CBN micro powder and a metal binding agent are subjected to ball milling and mixing, and CBN pre-composite micro powder is prepared; mixing the CBN pre-composite micro powder with the ceramic composite powder to obtain a premix, placing the premix in a mold for pre-pressing to obtain a blank piece, and then assembling the blank piece for sintering to obtain a PCBN composite material; the mass percentage content of the ceramic composite powder is 5%-40%, the mass percentage content of the metal binding agent is 15%-30%, and the mass percentage content of the CBN micro powder is 45%-65%. According to the method, the toughness and the stability of the PCBN cutter can be improved on the premise of low content of CBN (Cubic Boron Nitride).

The invention discloses a corona-resistant ceramic composite insulating material as well as a preparation method and application thereof, and belongs to the technical field of high-performance composite insulating materials and preparation thereof. The problems that an existing insulating material is insufficient in corona resistance and difficult in powder doping are solved. BMI-DBA is used as a functional carrier to load ADP powder to obtain a BD-A system, the BD-A system is further compounded with PI by adopting a cospinning process, and after imidization treatment, the composite insulating material with remarkable corona resistance is obtained. Through PI and BD-A system co-spinning and imidization treatment and in combination with an ADP ceramization process, the corona resistance of the composite insulating material is remarkably improved. Experimental results show that the corona resistance time of the composite material reaches more than 650 hours, and is improved by more than 6500 times compared with that of a pure PI insulation paper material (about 0.1 hour).

The invention relates to the technical field of battery materials, in particular to a para-aramid lithium battery diaphragm and a preparation method thereof. The para-aramid lithium battery diaphragm comprises para-aramid slurry and a base membrane, the para-aramid slurry is coated on the two sides of the base membrane to form para-aramid coatings, and the para-aramid slurry comprises the following raw materials in parts by weight: 20-40 parts of modified para-aramid polymer liquid, 10-20 parts of nano ceramic composite material powder and 10-18 parts of a solvent; the nano ceramic composite material powder is prepared from the following raw materials in parts by weight: 50 to 100 parts of nano aluminum oxide, 8 to 12 parts of nano zirconium dioxide, 0.3 to 0.8 part of yttrium oxide, 1 to 5 parts of magnesium nitrate hexahydrate, 0.1 to 1 part of polyacrylic acid, 1 to 2 parts of ammonia water, 1 to 3 parts of coupling agent and 20 to 30 parts of silicon dioxide; the nano ceramic composite material powder is added into the para-aramid slurry, so that the para-aramid diaphragm has better thermal stability, and the phenomenon of thermal shrinkage of the diaphragm at high temperature is reduced.

A wear-resistant ceramic composite metal slurry pump for mineral processing. The slurry pump comprises a bracket (1), a bearing assembly (2), a stuffing box (3), a pump casing (4), and wetted parts; the wetted parts include a front liner (5), a rear liner (6), a throat bushing (7), and an impeller (8); the front liner (5), the rear liner (6), the throat bushing (7), and the impeller (8) each adopt a composite structure in which ceramic blocks are bonded to metal, and the ceramic blocks are bonded to a metal framework in wear-prone areas of the wetted parts by means of an adhesive.

The invention relates to a ceramic composite diaphragm as well as a manufacturing method and application thereof. The method for manufacturing the ceramic composite diaphragm comprises the following steps: (1) mixing at least two of a rare earth oxide, a metal organic framework material and glass powder, polysilazane resin and an organic solvent to obtain precursor slurry, the polysilazane resin comprising hyperbranched polysilazane resin; (2) performing electrostatic spinning on the precursor slurry to obtain a precursor film; and (3) sequentially carrying out ultraviolet light crosslinking, plasma treatment and curing treatment on the precursor membrane to obtain the ceramic composite diaphragm.

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 utility model discloses a beveling machine facilitating collection of ceramic composite pipe chippings, and relates to the technical field of pipe machining. Comprising a supporting seat which serves as a base of the beveling machine and is fixed to the ground; a driving motor; the clamping device is used for clamping and fixing the workpiece; the outer wall of the clamping device is fixedly connected with the outer wall of the driving motor, the outer wall of the clamping device is rotatably connected with a rotating disc, the outer wall of the rotating disc is slidably connected with an adjusting block, the outer wall of the adjusting block is fixedly connected with a cutter, and the top of the supporting seat is fixedly connected with a water spraying structure. The water spraying structure sprays water to the contact position of the cutter and the ceramic composite pipe in the machining process, high temperature generated by friction is effectively reduced, the service life of the cutter is prolonged, meanwhile, chippings are flushed away in time, the machining area is kept clean, it is guaranteed that a spray head is always aligned with the contact position through the telescopic water pipe, and the cooling and chipping cleaning effect is improved; and the application range of the equipment is expanded.

The invention discloses a ceramic coating for a mine conveying pipeline and a preparation method of the ceramic coating, and belongs to the technical field of mine conveying pipelines. Based on the performance balance of the lining and the composite pipe, various powder combinations are selected as additives, and the ceramic coating with excellent comprehensive performance is prepared on the inner surface of the seamless steel pipe by adjusting and balancing the effects and mutual influences of various additives, so that the substrate steel pipe can be sufficiently protected; the matching of the thermal expansion coefficient and the hardness of a steel pipe-transition layer-ceramic coating composite system is realized, the interface stress is reduced, and the prepared ceramic composite steel pipe has the characteristics of high wear resistance, corrosion resistance, good impact resistance, long service life, high temperature resistance and the like, and can be applied to high-temperature and high-pressure scenes such as deep wells, mines and the like.

The invention belongs to the technical field of powder metallurgy, and particularly relates to a YSZ and graphene synergistically toughened WC ceramic composite material and a preparation method thereof, and a proper amount of YSZ and graphene are added into WC ceramic to effectively toughen the WC ceramic. The uniformly mixed WC and YSZ mixed powder is prepared by adopting a coprecipitation method, and then the graphene powder is mixed to prepare the YSZ and graphene synergistically toughened WC ceramic composite material, so that the fracture toughness of the material can be effectively improved while the hardness of the material is ensured.

The invention relates to the technical field of ceramic-based composite material preparation, in particular to an aluminum oxide-based refractory ceramic composite material and a preparation method thereof.The aluminum oxide-based refractory ceramic composite material is prepared from, by mass, 80-90 parts of modified aluminum oxide, 5-10 parts of modified nano zirconium oxide suspension liquid and 3-5 parts of nano titanium dioxide sol, according to the invention, material component modification, interface structure design and gradient protection technology are optimized, compatibility of a matrix and a reinforced phase is cooperatively regulated and controlled, and low-temperature presintering and surface functionalization treatment technologies are improved, so that thermal shock resistance stability, high-temperature strength retention rate and chemical erosion resistance of the material are improved; the refractory material has excellent durability, provides a new solution for high-performance and engineering application of the refractory material, and has a wide application prospect.

The invention relates to the field of metal materials, in particular to a preparation method of an ultra-high-speed laser cladding Al2O3 metal ceramic coating. The method comprises the following steps that iron-based metal powder, aluminum oxide ceramic powder and silicon powder are prepared according to the design proportion, the iron-based metal powder, the aluminum oxide ceramic powder and the silicon powder are evenly mixed and then subjected to ultra-high-speed laser cladding, the mass percent of aluminum oxide in the obtained composite powder is 6-10%, the mass percent of silicon powder in the obtained composite powder is 0.5-5%, and when ultra-high-speed laser cladding is carried out, the thickness of the composite powder ranges from 0.5 mm to 5 mm; the laser power ranges from 1500 W to 2400 W, the scanning speed ranges from 12 m / min to 20 m / min, the defocusing amount is + 1 mm, the powder feeding amount ranges from 22 g / min to 30 g / min, the lap joint rate ranges from 60% to 65%, and powder feeding and protective gas is argon. The component design is reasonable, the cost is low, and the obtained product is high in hardness, resistant to corrosion and convenient for industrial application.

The invention belongs to the field of carbon-based composite materials, and particularly relates to a short carbon fiber reinforced carbon-ceramic composite material. The preparation method comprises the following steps: mixing mesophase pitch powder and resin powder according to a mass ratio of (5-7): (3-5) to obtain a mixed binder; uniformly mixing nanoscale carbon black serving as a reinforcing phase and sodium dodecyl sulfate serving as a dispersing agent to obtain modified nano carbon black; uniformly mixing the obtained mixed binder with modified carbon black according to the ratio of 100: (1-4) to obtain a mixed binder; weighing the modified carbon black enhanced mixed binder and short carbon fibers according to a mass ratio of (40-60): (40-60), and uniformly mixing to obtain pressed powder; and carrying out hot press molding, carbonization and reactive infiltration to obtain the short carbon fiber reinforced carbon-ceramic composite material. The process is simple and controllable, the obtained product is high in density, high in strength and high in friction coefficient stability, and industrial application is facilitated.

The invention discloses metal ceramic MAX-phase composite powder for spraying and a preparation method of the metal ceramic MAX-phase composite powder, and belongs to the field of metal ceramic composite materials. The method comprises the following steps: mixing Ni powder, Cr powder and Cr2AlC nano powder with deionized water, a binder and a dispersant according to a specific ratio, and carrying out wet ball milling to prepare uniform slurry; carrying out spray granulation to obtain primary spherical powder; and finally, carrying out spheroidizing treatment on the primary powder by adopting radio frequency plasma under the protection of inert gas to obtain a final product. The core of the preparation method is that through an optimized two-step process, many limitations in the application aspect of an existing MAX phase material are solved, and the composite powder which is high in sphericity degree, good in flowability, compact in interior and stable in MAX phase component is successfully prepared. The powder can be directly used for thermal spraying, and an ideal raw material is provided for preparing a high-performance MAX-phase metal ceramic coating.

The invention relates to the technical field of crystalline silicon growth equipment, and provides a composite heat preservation cover for a crystalline silicon growth reduction furnace and a preparation method, the composite heat preservation cover comprises a heat insulation layer and a function protection lining, and the heat insulation layer is arranged on the outer side of the function protection lining; the heat insulation layer is made of a high-purity fiber heat insulation material or a ceramic fiber heat insulation material, the metal impurity content of the heat insulation layer is smaller than 100 ppm, and the heat conductivity coefficient is smaller than or equal to 0.1 W / (m.K); the function protection lining is made of a high-purity and high-density carbon-ceramic composite material, and the metal impurity content of the high-purity and high-density carbon-ceramic composite material is smaller than or equal to 200 ppm; or the functional protection lining is made of a carbon-carbon composite material, and a silicon carbide coating and / or a silicon nitride coating are / is arranged on the surface of the functional protection lining. The high-purity and high-density carbon-ceramic composite material lining is compounded with the efficient thermal insulation material, so that high-speed gas scouring protection, corrosive atmosphere blocking and accurate axial heat flow regulation and control are synchronously realized. Compared with a traditional structure, the power consumption of the structure is reduced by more than 20%, and the service life reaches more than 6 months.

The invention discloses a self-healing high-temperature anti-oxidation carbon-ceramic composite material, belongs to the technical field of ceramic-based composite materials, and particularly relates to a method for introducing a self-healing metal-element-free high-temperature anti-oxidation ceramic matrix into a carbon fiber preform. Then introducing a resin carbon matrix and a self-healing inorganic filler through two times of vacuum impregnation and high-temperature cracking, and finally preparing the SiC matrix by adopting high-temperature siliconizing. The carbon-ceramic composite material prepared by the invention does not contain metal impurities, has a self-healing function, and has a long-life anti-oxidation function in a range of 700-1000 DEG C.

The invention relates to the technical field of protective materials and preparation thereof, and provides a multi-penetration-resistant ceramic armor array structure and a preparation method thereof.The multi-penetration-resistant ceramic armor array structure comprises a plurality of carbon-ceramic units arranged in an array mode, the space between the multiple carbon-ceramic units is filled with B4C powder in a cold pressing mode, and molten aluminum permeates into the space between the multiple carbon-ceramic units through pressure; the carbon-ceramic unit is formed by stacking pure ceramic layers and sizing carbon fiber cloth with different thicknesses in a gradient mode. The preparation method comprises the steps that S1, the carbon-ceramic unit is designed and prepared; s2, designing and preparing a preform blank; and S3, designing and preparing a ceramic protection array structure. The preparation method has the beneficial effects that the carbon fiber toughened ceramic is used as a main body material, a high-toughened carbon ceramic structure is designed by adopting a gradient array, the toughness-matched ceramic composite material module suitable for projectile impact is prepared by adopting a pressure infiltration integrated forming technology, and the multi-elastic resistance of the ceramic composite material module is improved on the premise that the composite protection weight is not increased.