1472 results about "Ceramic coating" patented technology

The invention relates to the technical field of composite film preparation, in particular to a multi-layer co-extrusion nano ceramic coating high-barrier medicine packaging composite film and a preparation method thereof.The multi-layer co-extrusion nano ceramic coating high-barrier medicine packaging composite film comprises a base material layer, a gas barrier layer, a bonding transition layer and a nano ceramic functional coating; the base material layer comprises the following components in parts by mass: 80-100 parts of biaxially oriented polypropylene; 20 to 30 parts of metallocene linear low density polyethylene; 5 to 8 parts of nano titanium dioxide; 0.5 to 1 part of beta-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid; and 0.3 to 0.6 part of calcium stearate. Through the multi-layer co-extrusion and gradient curing technology and the five-layer co-extrusion technology, it is ensured that the thickness of a base film is uniform and interlayer bonding is firm, the adhesive force of the coating is enhanced through plasma surface treatment, and activity retention and uniform distribution of functional components are guaranteed through the segmented curing strategy of the nano ceramic coating; compared with a traditional hot-pressing compounding or solvent coating process of the composite film, the energy consumption and the solvent residue risk are greatly reduced, meanwhile, the production efficiency and the product consistency are improved, and large-scale application is provided for medicine packaging.

The invention discloses a lithium battery diaphragm with a self-repairing function and a preparation method thereof, and belongs to the field of lithium battery diaphragms. The lithium battery diaphragm comprises a polymer base membrane and a ceramic coating, the ceramic coating is coated on one side surface, facing the negative electrode, of the polymer base membrane or two side surfaces of the polymer base membrane; the ceramic coating comprises the following raw materials in parts by mass: 40-50 parts of modified ceramic particles, 4-8 parts of self-repairing microcapsules, 0.5-3 parts of a dispersing agent and 50-60 parts of water; the surfaces of the modified ceramic particles are grafted with amino-phenylboronic acid difunctional silane; chitosan / polyurethane is used as a wall material of the self-repairing microcapsule, and polyisocyanate is used as a core material of the self-repairing microcapsule. When the lithium ion diaphragm is stressed or punctured by dendritic crystals, the polyisocyanate can be released to react and crosslink, the generated cracks are closed, and an ion channel is reconstructed. Through the physical barrier of the ceramic coating and the self-repairing effect of the self-repairing microcapsule, the mechanical strength and the ion transmission performance of the lithium battery diaphragm can be effectively maintained.

The invention provides a polysilazane green special refractory ceramic coating and a preparation method thereof, and belongs to the field of ceramic coatings. The ternary core material composed of titanium carbide, zirconium boride and silicon nitride provides high hardness, oxidation resistance, thermal shock resistance and excellent thermal stability; the silicon dioxide-aluminum oxide composite shell layer remarkably improves the oxidation resistance and reliability of the coating through the synergistic oxidation resistance and crack self-repairing function; the multi-metal oxygen cluster network endows the coating with excellent electrical conductivity, thermal conductivity and corrosion resistance; the intercalated montmorillonite enhances the crack resistance and oxidation resistance through a layered structure and embedded active ions; and the boron nitride coated vanadium carbide particles provide lubricity, oxidation resistance and wear resistance. Through collaborative optimization of multiple components, the comprehensive performance of the coating is comprehensively improved in the aspects of oxidation resistance, thermal conductivity, interface stability, high-temperature performance, mechanical performance and the like, so that the coating shows excellent long-term stability and functionality in an extreme environment.

The preparation method comprises the following steps: brushing ultrahigh-temperature ceramic oxide slurry on the surface of a graphite base material, carrying out first heat treatment to obtain a porous transition layer, then brushing ultrahigh-temperature carbide slurry on the surface of the porous transition layer, and carrying out second heat treatment to obtain the high-temperature-stable and corrosion-resistant multi-layer composite ceramic coating on the surface of the graphite base material. The preparation method comprises the following steps: performing primary heat treatment on the surface of an ultra-high-temperature carbide layer, drying to obtain the ultra-high-temperature carbide layer, performing roughening treatment on the surface of the ultra-high-temperature carbide layer by adopting ultra-high-temperature carbide slurry, performing secondary heat treatment to obtain a rough carbide layer, and performing point pressure on the surface of the rough carbide layer by adopting metal carbide ceramic mixed slurry to obtain dense bulges; according to the method disclosed by the invention, not only can the bonding firmness among the layers be remarkably improved, but also the situation that the graphite base material and the surface protection layer react at high temperature, so that the coating fails and falls off is effectively avoided, the use limit of the protection layer is further enhanced, and the method has a wide application prospect.

The invention discloses a tungsten alloy material containing a silicon carbide reinforced Al2O3-SiO2-based multiphase ceramic coating and a preparation method of the tungsten alloy material, and belongs to the field of ceramic material preparation. The method comprises the following steps: ball-milling and mixing powder raw materials containing modified silicon carbide, aluminum oxide, silicon dioxide and lead oxide with a solvent, and defoaming to obtain ceramic slurry; the ceramic slurry is brushed on the surface of a tungsten alloy matrix subjected to surface pretreatment, and after drying, vacuum sintering is performed to obtain the tungsten alloy. The compact silicon carbide reinforced Al2O3-SiO2-based multiphase ceramic coating is introduced to the surface of a tungsten alloy matrix, the hardness, the high-temperature oxidation resistance and the high-temperature carburization resistance of a tungsten alloy material are remarkably improved, the stability of the coating can be improved through the silicon carbide distributed in a dispersed point shape, the thermal expansion coefficient of the coating is evenly reduced, and the hardness, the high-temperature oxidation resistance and the high-temperature carburization resistance of the tungsten alloy material are improved. The thermal expansion coefficient difference value between the multiphase ceramic coating and a tungsten alloy matrix is reduced, and the thermal shock resistance of the coating is improved.

According to the battery diaphragm provided by the embodiment of the invention, a ceramic coating embedded with PMMA (Polymethyl Methacrylate) microspheres is coated on a single surface or double surfaces of a base diaphragm, the PMMA microspheres are arranged in a manner that parts of the PMMA microspheres protrude on the outer surface of the ceramic coating and parts of the PMMA microspheres are completely embedded in the ceramic coating, and the embedding depth h of any PMMA microsphere in the ceramic coating meets the condition that h is more than or equal to 1 / 3Dv50 and less than or equal to Dv50. According to the structure, the viscidity of the diaphragm is enhanced, and meanwhile, an electrolyte channel is formed between the diaphragm and an electrode through the protruding microspheres, so that electrolyte infiltration is facilitated; pMMA microspheres embedded in the ceramic coating are mixed in the coating to form supporting points, so that the extrusion resistance of the coating is improved; by adjusting the proportion and the embedding depth of the PMMA microspheres embedded in and protruding out of the ceramic coating, the adhesion of the diaphragm and the extrusion resistance of the coating can be balanced, and the performance of the battery diaphragm is optimized. The invention also provides a preparation method of the battery diaphragm and a secondary battery containing the battery diaphragm.

The invention relates to the technical field of stainless steel pneumatic cylinder barrels, and particularly discloses a wear-resistant stainless steel pipe for a pneumatic cylinder barrel and a preparation process thereof.The wear-resistant stainless steel pipe for the pneumatic cylinder barrel comprises the steps that firstly, a powder metallurgy method is adopted, tungsten carbide, cerium oxide, chromium nitride and other components are added into stainless steel powder, and the performance of a steel pipe base body is enhanced; the corrosion-resistant alloy layer is deposited on the surface of the steel pipe, so that the corrosion resistance, wear resistance and other properties of the steel pipe are enhanced, finally, a silicon nitride wear-resistant ceramic layer is sintered on the surface of the corrosion-resistant coating, and two lubricants of graphite and molybdenum sulfide are synthesized in gaps and holes of the wear-resistant ceramic layer. The defects on the ceramic surface are blocked; and the ceramic coating is endowed with a self-lubricating function.

The invention relates to the technical field of surface engineering, discloses a method and a system for preparing a yttrium fluoride composite ceramic coating through atmospheric plasma spraying, and aims to solve the problems that the yttrium fluoride coating generates a brittle aluminum fluoride layer on the surface of an aluminum substrate due to fluorine ion diffusion, so that the bonding strength is low, and the yttrium fluoride coating is easy to peel off and lose efficacy. The method comprises the following steps: sequentially carrying out mechanical polishing, ultrasonic cleaning and sand blasting roughening on an aluminum base material; preparing composite powder formed by mixing yttrium fluoride, yttrium oxide and nanometer aluminum oxide according to the mass ratio of 75: 20: 5; sequentially depositing a yttrium oxide transition layer, a composite barrier layer and a yttrium fluoride functional layer by adopting atmospheric plasma spraying; and finally carrying out vacuum post-heat treatment. According to the system, through the synergistic effect of the three layers of gradient structures, the transition layer forms an yttrium aluminate metallurgical bonding interface, the barrier layer inhibits fluorine ion diffusion through the dual mechanisms of nanometer aluminum oxide physical barrier and yttrium oxide chemical adsorption, and the functional layer guarantees the plasma erosion resistance. According to the method, the bonding strength of the coating is remarkably improved to 50 MPa or above, the porosity is lower than 3%, stripping is avoided under 500-hour high-energy plasma bombardment, the process cost is reduced by 40%, and the method is suitable for cavity protection of semiconductor etching equipment.

The invention relates to the technical field of spaceflight material forming, in particular to a tension control winding process of a spaceflight carbon fiber composite launch canister, which comprises pretreatment, winding forming, curing and post-treatment. The method comprises the following steps: S1, coating a release agent and a modified coating after processing a core mold, carrying out plasma treatment and eliminating stress; the carbon fiber filaments are soaked in resin containing nanometer components, and are pre-stretched after a hot melting reaction; s2, closed-loop tension control is conducted, winding is conducted according to segmented angles, and modified resin is coated between layers to be overlapped in a crossed mode; s3, stepwise heating and curing, dynamically regulating the pressure and introducing inert gas; and S4, polishing after hydraulic demolding, carrying out sand blasting, carrying out transition layer and ceramic coating, and carrying out multi-dimensional detection. According to the process, the mechanical property and environmental adaptability of the launch canister are improved, the process precision is high, defects are reduced, the forming time is shortened, the rework rate and cost are reduced, the spaceflight requirement is met, and the process is suitable for batch production.

The invention belongs to the technical field of asphalt stirring, and discloses an asphalt stirring device based on road and bridge pothole filling, the asphalt stirring device comprises a base, a stirring and scraping mechanism is arranged above the base, the stirring and scraping mechanism comprises a mixing tank, asphalt is fully stirred through the stirring and scraping mechanism, and through a sleeve in the stirring and scraping mechanism, the stirring and scraping mechanism is driven to rotate; according to the double-shaft driving design of the rotating pipe, an efficient and synergistic stirring and scraping system is constructed, the inclined face of an arc-shaped scraping plate is attached to the inner wall of the mixing tank and matched with a wear-resistant ceramic coating, adhered asphalt is scraped in real time in the rotating process, meanwhile, the rotating pipe synchronously rotates, radial stirring is achieved through external stirring blades of the rotating pipe, and a spiral lifting piece pushes bottom asphalt to axially flow; by matching with the turbulent flow effect of the U-shaped heat conduction pipe, the asphalt forms a three-dimensional flow field in the tank, an auxiliary agent and the asphalt are fully fused, the problem of non-uniform mixing caused by traditional single-dimension stirring is solved, the stable performance of the asphalt is guaranteed, and a basic support is provided for crack resistance and water damage resistance after pavement filling.

The invention discloses a method for preparing an ultrahigh-temperature ceramic coating by an ultrahigh-temperature metal gas source based on a molten salt medium, which comprises the following steps of: mixing low-melting-point salt A, metal fluoride and metal M to obtain a mixture C, putting the mixture C into a first crucible, mixing low-melting-point salt B and metal M to obtain a mixture D, putting the mixture D into a second crucible, putting a carbon base material into a deposition furnace, and performing vacuum drying to obtain the ultrahigh-temperature ceramic coating. Heating the first crucible to melt the mixture C to obtain a melt E, and heating the second crucible to melt the mixture D to obtain a melt F; carrier gas is guided into the first crucible, the carrier gas flow passes through the melt E to form gas flow containing a metal gas source, the gas flow containing the metal gas source is guided into the second crucible, and the gas flow containing the metal gas source is filtered by the melt F in the second crucible to form a pure metal reaction gas source, and finally, a pure metal reaction gas source is introduced into the deposition furnace for deposition of the carbon base material, and the ultra-high-temperature ceramic coating is obtained. The method is easy to operate and low in cost.

The invention provides a battery and an electric device. A positive plate comprises a positive active material, and the positive active material is doped and / or coated with a lanthanum element; the surface of the diaphragm is coated with a ceramic coating; the electrolyte comprises a first solvent, a second solvent, a first additive and a second additive; the first solvent comprises a cyclic carbonate compound, the second solvent comprises a chain fluorosulfonamide compound, the first additive comprises mannitol carbonate sulfate, and the second additive comprises succinonitrile; the lanthanum element is doped / coated on the positive active material, so that the release of lattice oxygen at high voltage or high temperature can be effectively inhibited, and the exothermic reaction activity at the thermal runaway initial temperature is reduced; the first additive and the second additive in the electrolyte respectively form a compact CEI film and an SEI film with high thermal stability on the surfaces of the positive electrode and the negative electrode; the diaphragm ceramic coating provides a physical barrier, the thermal shrinkage temperature of the diaphragm is increased, and internal short circuit is prevented.

The invention belongs to the field of electronic display film materials, and discloses a UV optical film material and a manufacturing method and application thereof.The UV optical film material comprises a base material, a frosted layer, an inner protective film layer, an optical ink layer, a transparent adhesive layer and an outer protective film layer, and the inner surface of the base material is sequentially coated with the frosted layer and the inner protective film layer outwards; the outer surface of the base material is sequentially coated with an optical ink layer, a transparent adhesive layer and an outer protective film layer outwards; the coating process comprises the steps that the viscosity of UV optical ink is controlled to be 16 ''-18'', the outer surface of the base material is coated with the UV optical ink through a precise micro-concave ceramic coating roller, and then UV curing is conducted to form an optical ink layer; coating a transparent adhesive layer on the surface of the optical ink layer, and after curing, coating UV optical transfer adhesive on the inner surface of the base material to form a frosted layer; finally, the surface of the frosted layer and the surface of the transparent adhesive layer are coated with an inner protective film layer and an outer protective film layer respectively. The coating has the characteristics of high hardness and high adhesive force, the surface can be kept uniform, the edge sharpness is high, and discoloration can be effectively prevented.

The invention relates to the technical field of brake disc materials, in particular to a high-wear-resistance anti-corrosion ceramic automobile brake disc and a preparation method thereof. The high-wear-resistance and corrosion-resistance ceramic automobile brake disc is prepared from an aluminum-based composite base material, bonding metal and ceramic through a plasma spraying technology, and the high-wear-resistance and corrosion-resistance ceramic automobile brake disc is prepared in cooperation with an organization structure of a gradient coating. The ceramic coating and the aluminum-based composite base material are designed into the gradient integrated coating with the gradually-changed components, so that the heat insulation performance and the wear resistance of the ceramic coating can be achieved, the good bonding capacity of the ceramic coating and the base body can be guaranteed, the advantages of a metal bonding phase and a hard ceramic phase in the ceramic coating are fully exerted, and the service life of the ceramic coating is prolonged. The bonding force between the ceramic coating and the aluminum-based composite base material is high, the adhesive force is greatly improved, meanwhile, the gradient integrated coating with the gradually-changed components forms the uniform and compact ceramic coating on the surface of the aluminum-based composite base material, and the ceramic coating is high in hardness and high in abrasion resistance.

The invention discloses an anti-adhesion conductive ceramic coating and application thereof to a high-frequency electrotome, and relates to the technical field of surface modification. The preparation method of the anti-adhesion conductive ceramic coating at least comprises the following preparation steps: carrying out cleaning and surface sand blasting treatment on a high-frequency electrotome substrate; blending fusible polytetrafluoroethylene powder, hydrophobic nano silicon dioxide particles and modified fluorinated graphene at a high speed to obtain mixed powder; and the mixed powder is sprayed on the surface of the high-frequency electrotome base body subjected to surface sand blasting through a powder electrostatic spraying technology, and after baking and cooling, the anti-adhesion conductive ceramic coating is obtained. The high-frequency electrotome anti-sticking ceramic coating prepared by the invention has good anti-sticking property, tissue adhesion resistance, electrical conductivity and low possibility of falling off.

The invention provides a lithium ion battery diaphragm as well as a preparation method and application thereof, and relates to the technical field of lithium ion batteries. Specifically, the lithium ion battery diaphragm comprises a polyimide nanofiber substrate layer, a dynamic cross-linked polyurethane self-repairing layer and a ceramic coating which are connected in sequence, and the lithium ion battery diaphragm also comprises poly (N-isopropylacrylamide) microspheres embedded into the layers. The technical problems that a traditional lithium battery diaphragm is prone to failure at a high temperature, the lithium dendrite penetration risk is high, and the electrolyte wettability is poor can be solved at the same time, through collaborative innovation of materials, structures and functions, comprehensive improvement of safety and electrochemical performance of a lithium ion battery is achieved through the diaphragm layer, and the lithium ion battery diaphragm has good application prospects.

The invention relates to the technical field of magnet materials, and discloses a high-temperature-resistant neodymium-iron-boron magnet and a preparation method of the high-temperature-resistant neodymium-iron-boron magnet. The high-temperature-resistant neodymium-iron-boron magnet comprises the following components in parts by weight: 25-30 parts of neodymium, 60-65 parts of iron, 1.0-2.0 parts of boron, 3.0-5.0 parts of lanthanum, 0.5-2.0 parts of zirconium, 0.5-1.0 part of molybdenum and 0.1-0.5 part of nano ceramic particles, and the invention further provides a preparation method of the high-temperature-resistant neodymium-iron-boron magnet. S1, preparing and mixing alloy raw materials; s2, nano ceramic coating treatment is carried out; s3, magnetic field assisted pressing forming; and S4, rapid induction sintering. Through the magnetic field assisted directional pressing process, effective control over grain orientation in the pressing forming stage is achieved, magnetic domain arrangement is more ordered, and the residual magnetism and the energy product are improved. Different from a forming mode with disordered grain directions and poor magnetic anisotropy in an existing common cold pressing process, the technical defect that the utilization rate of magnetic performance is low due to poor orientation is overcome.

The invention provides a high-speed laser cladding metal ceramic coating, a cast iron brake disc and a preparation method and application of the cast iron brake disc. The high-speed laser cladding metal ceramic coating comprises the following preparation raw materials in percentage by mass: 40%-60% of stainless steel, 10%-20% of SiC, 10%-30% of ZrO2, 5%-10% of Ti and 1%-2% of CeO2. According to the coating, the hardness, the wear resistance, the friction coefficient and the toughness of a cast iron matrix can be remarkably improved, and the braking requirement of a motor vehicle under the extreme working condition can be well met. The invention further provides the cast iron brake disc and a preparation method and application thereof.

The invention discloses a flame-retardant functional diaphragm and a preparation method thereof, and relates to the technical field of lithium batteries. The flame-retardant functional diaphragm comprises a diaphragm base material and a flame-retardant ceramic coating arranged on one side of the diaphragm base material, the flame-retardant ceramic coating is obtained by coating and drying flame-retardant ceramic slurry, and the thickness of the flame-retardant ceramic coating is 1-20 microns; the flame-retardant ceramic slurry comprises the following raw materials in parts by mass: 20-55 parts of inorganic particles, 5-30 parts of a phosphorus-based flame retardant, 5-30 parts of a nitrogen-based flame retardant, 100 parts of a solvent, 0.1-1 part of a dispersing agent, 0.2-1 part of a thickening agent, 1-3 parts of a binder and 0.1-0.5 part of a wetting agent. The high-phosphorus and high-nitrogen flame retardants are introduced and compounded into a ceramic coating system, so that the problems of rapid carbonization and fragmentation after ignition of the ceramic diaphragm are solved, and meanwhile, the effects of ignition without open fire after ignition and self-extinguishing after being away from the fire can be achieved.

A preparation method of an integrated thermal barrier ceramic coating with high strength and toughness / low thermal conductivity / anti-thermal radiation penetration belongs to the technical field of thermal barrier coating materials. The purpose of the present invention is to solve the problems that the anti-thermal radiation penetration thermal barrier coating materials prepared by the existing methods have precious metal second phases which are not only expensive but also have a large difference in thermal expansion coefficients between the metal-doped second phases and the ceramic matrix phases, resulting in the failure of thermal expansion matching of the materials at high temperatures, the metal-doped second phases have high thermal conductivities, which will increase the thermal conductivity of the composite materials and reduce their thermal protection effects during high-temperature service, and there are potential problems of interface failure in the multi-layer structure coatings. Method: First, surface pretreatment of the substrate; second, preparation of the bonding layer; third, preparation of the ceramic matrix phase components and the dispersed phase functional ceramic components; fourth, mixing and spherical granulation; fifth, preparation of the functional surface layer. The present invention can obtain an integrated thermal barrier ceramic coating with high strength and toughness / low thermal conductivity / anti-thermal radiation penetration.

The invention discloses a water-based poly-ceramic coating material as well as a preparation method and application thereof. The formula comprises a composite base material (40-45 parts of modified waterborne polyurethane resin and 15-20 parts of a waterborne acrylic emulsion), a synergistic curing system (10-12 parts of a blocked isocyanate curing agent and 0.8-1.2 parts of a latent organic zinc salt accelerant), an organic-inorganic reinforced phase (10-15 parts of nano silicon dioxide and 8-10 parts of polysilazane) and a functional aid. The base material and the cosolvent cooperate to make VOCs less than or equal to 30 g / L, a curing system cooperates to realize low-temperature rapid curing, organic-inorganic components cooperate to form a poly-ceramic structure, the coating is adaptive to an existing roll aluminum production line, and the problems of environmental protection, energy conservation and performance of a traditional coating are solved.

The invention belongs to the technical field of battery manufacturing, and particularly discloses a diaphragm with a gradient structure and a preparation method of the diaphragm. The diaphragm with the gradient structure comprises a diaphragm base membrane and a coating layer, the coating layer comprises ceramic coatings with different particle size ranges, and the two faces of the diaphragm base membrane are coated with ceramic particles A with the particle size D50 smaller than or equal to 100 nm and ceramic particles B with the particle size of 200-400 nm respectively. According to the diaphragm with the gradient structure, the porosity on the side close to the positive electrode is small, the porosity on the side close to the negative electrode is large, and therefore a smoother lithium ion transmission channel can be formed on the negative electrode side of the diaphragm, and the requirement for high lithium ion flux is met.

The invention discloses a corrosion-resistant double-suction type chemical pump. The corrosion-resistant double-suction type chemical pump comprises a pump body, an impeller assembly, a sealing device and a driving mechanism. The sealing device adopts a fluororubber elastic compensation piece and is provided with a cooling system, a shock pad and a drainage groove are arranged at the bottom of the supporting frame, and a convenient access hole is formed in the top of the supporting frame. By optimizing the material and structural design, the corrosion resistance and maintenance convenience are remarkably improved, the problems that under the strong corrosion working condition, aging is likely to happen, and sealing fails are effectively solved, and the high practicability and popularization value are achieved.

The application belongs to the technical field of surface modification, and discloses a method for constructing a ceramic-based self-lubricating, high-wear-resistant and strong-corrosion-resistant coating based on thermal spraying technology and application. The method uses a thermal sprayed ceramic coating as a template, introduces a solid-liquid reversible lubricating phase, and after being heated and melted, the solid-liquid reversible lubricating phase is penetrated into inherent pores and micro / nano cracks in the ceramic coating through a vacuum impregnation process, and is solidified and retained in the defects after cooling, so that a new ceramic-based self-lubricating and strong-corrosion-resistant composite coating is finally obtained. The preparation method is simple, fast and efficient, and does not affect the mechanical properties of the ceramic coating, and the ceramic-based self-lubricating and strong-corrosion-resistant composite coating has low friction coefficient and excellent wear resistance and corrosion resistance.

The invention discloses a high-efficiency filtering and dedusting mixed mortar integrated production system, and relates to the technical field of mixed mortar production, the high-efficiency filtering and dedusting mixed mortar integrated production system comprises an intelligent pre-separation filtering unit, and the intelligent pre-separation filtering unit is used for carrying out primary pre-separation on large-particle impurities and solid particles in raw materials; a double-layer rotational flow filter element with a self-cleaning function is arranged in the intelligent pre-separation filter unit, the outer layer of the double-layer rotational flow filter element is a wear-resistant ceramic coating, and the inner layer of the double-layer rotational flow filter element is made of an elastic polymer material. By designing the double-layer self-cleaning rotational flow filter element, the differential pressure self-adaptive filter screen dust removal unit and the online regenerated energy recovery device, the functions of full-process efficient dust removal and energy recovery are realized, the problems of large traditional dust removal resistance and energy waste are solved, the pressure difference is effectively reduced, the energy consumption is reduced, and the continuous online operation time is prolonged.

The invention provides an application of a composite coating formed by titanium oxide and chromium oxide in hydrogen resistance, which comprises the following steps: substrate preparation: cutting a metal sample into a metal substrate, pretreating the surface of the metal substrate, polishing, cleaning and drying; cr2O3-10% TiO2 composite powder is adopted, the composite powder is heated to be in a molten or molten state, and under traction of plasma high-speed flame flow, the composite powder impacts the surface of the base body in an accelerated mode and deposits to form the ceramic coating. According to the application of the composite coating formed by the titanium oxide and the chromium oxide in hydrogen resistance, the hydrogen permeation current is reduced, so that the hydrogen resistance of the coating is enhanced.

The invention discloses a method for preparing an hBN ceramic coating on the surface of a SiCp / 2024Al substrate, and belongs to the technical field of surface treatment. The invention discloses a method for preparing an hBN ceramic coating on the surface of a SiCp / 2024Al substrate. The method comprises the steps that the SiCp / 2024Al substrate is polished and ground and then dried after being subjected to ultrasonic cleaning; adding sodium silicate, sodium hydroxide, the hexagonal boron nitride nano-powder and a surface active component into deionized water, and performing ultrasonic dispersion to obtain a composite electrolyte; placing the composite electrolyte in a stainless steel electrolytic bath, and connecting the stainless steel electrolytic bath to a power supply cathode of a plasma discharge system; the pretreated SiCp / 2024Al substrate is connected to the positive electrode of a power source of a plasma discharge system and immersed in the composite electrolyte; and the plasma discharge system operates, under the action of positive and negative pulses, the nano-particles are driven to migrate to the surface of the SiCp / 2024Al substrate and participate in reaction co-deposition, and the compact and uniform large-thickness high-electrical-insulation hBN ceramic coating grows on the surface of the substrate.

The application discloses a kind of low thermal conductivity high reflectivity five-element co-doped ceramic laser protection coating and preparation method thereof, belong to high-energy laser protection technical field.The protective coating includes the adhesive layer and the reflective heat insulation layer of laminated arrangement, adhesive layer is arranged on the surface of base material, reflective heat insulation layer is arranged on the surface of adhesive layer;Wherein, adhesive layer is formed by spraying one of Ni-Al self-bonding powder, Ni-Mo-Al, NiCrAlY, CoCrAlY and NiCoCrAlY;Reflective heat insulation layer is the ceramic coating of five-element co-doped ZrO2, in ceramic coating, base element is ZrO2, doping component is:Y2O3, Gd2O3, Yb2O3, TiO2 And Ta2O5, after doping, material is single cubic phase structure at 25 ℃-1600 ℃.By multiple oxide doping to ZrO2, the coating can maintain cubic phase at room temperature while having lower thermal conductivity and higher reflectivity, can solve the problems of oxidation reflectivity reduction of metal material, mass loss of ablation material and insufficient heat insulation capacity of heat insulation material in laser protection field, prolong service life.

The invention relates to a method for preparing a diffusion bonding layer on a nickel-based alloy and YSZ ceramic coating interface, and belongs to the technical field of metal material surface protection and ceramic coatings. According to the preparation method, a YSZ composite ceramic coating is deposited on the surface of the nickel-based alloy by adopting an electrophoretic deposition method, and then an MCr2O5 (M is Zr, Y, Ce, Yb and Al) diffusion bonding layer is prepared on the interface of the nickel-based alloy and the YSZ composite ceramic coating by adopting a pressureless discharge sintering and thermal diffusion treatment method. The bonding layer prepared through the diffusion method is good in interface bonding, the thermal stress between the nickel-based alloy and the YSZ ceramic coating is effectively buffered, the defects that a bonding layer prepared through a traditional method is large in pore impurity amount and the like can be overcome, and the bonding force between the ceramic coating and a base body and the high-temperature anti-oxidation and anti-stripping performance are remarkably improved.

The invention belongs to the technical field of thermal power heating surface treatment, and provides a boiler heating surface high-temperature corrosion protective coating and a preparation method thereof in order to solve the technical problems that in the prior art, a nano ceramic coating and a metal alloy coating for treating thermal power boiler heating surface high-temperature corrosion are insufficient in adhesive force, prone to falling off and short in protection service life. Through multi-layer structure design and technological parameter optimization, a coating system has continuous thermal expansion coefficient gradient distribution in the interval of 500-900 DEG C, the metal bonding layer at the bottom layer has a pore structure which can effectively absorb thermal stress, the nano ceramic layer at the surface layer can maintain high-temperature stability, and it is verified that the overall bonding strength is larger than or equal to 35 MPa, and the thermal expansion coefficient is larger than or equal to 10%. Compared with a traditional single-layer coating, the adhesive force is improved by 200% or above, and therefore the technical problems that in the prior art, adhesive force is insufficient, thermal stress is not matched, and high-temperature softening fails can be effectively solved.