1070 results about "Cermet" patented technology

The invention discloses a micro proportional valve gradient composite coating and a preparation method thereof, and belongs to the technical field of micro proportional valve surface strengthening manufacturing. Aiming at the corrosion-resistant and wear-resistant requirements of the micro proportional valve under the working conditions of strong corrosion, multiple impurities and high pressure difference, the interface strengthening and corrosion-resistant and wear-resistant performance optimization of a metal matrix and a functional coating are combined, and metal / ceramic / polymer gradient material design, spraying parameter suitability research and a coating porosity / bonding strength control method are covered; the valve core and valve seat protection device is suitable for high-efficiency protection technical systems of valve cores and valve seats of precise instruments such as gas chromatographs and mass spectrometers.

The present invention provides a rheological die casting preparation method for an aluminum electrolytic metal ceramic anode, comprising: mixing metal ceramic powder and an organic binder to obtain a material agglomerate, molding the material agglomerate to obtain an anode shell material, fixing a T-shaped electric connection guide rod containing a soldering lug to the center of a mold, preheating the mold, and preheating the anode shell material, then injecting the anode shell material into a cavity of the mold via a flow channel, cooling and demolding the mold to obtain a metal ceramic anode blank containing the T-shaped electric connection guide rod, degreasing and sintering the metal ceramic anode blank containing the electric connection guide rod to obtain the aluminum electrolytic metal ceramic anode. According to the present invention, integrated near net shape forming of the special-shaped metal ceramic anode shell and the electric connection guide rod is realized by means of the rheological die casting preparation method, and the bottom of the T-shaped guide rod is tightly connected to the inner wall of the metal ceramic, solving the problems that aluminum electrolytic metal ceramic of a complex structure is difficult to form, and the electric connection guide rod is prone to falling off.

The invention discloses a preparation method of ultra-fine grain high-entropy carbide-based metal ceramic, which comprises the following steps: step 1, dispersing multi-component carbide powder or micron-sized high-entropy carbide powder in an organic solvent, adding phenolic resin and ceramic grinding balls, and carrying out ball milling; step 2, pre-sintering the dried high-entropy ceramic powder; 3, the obtained high-entropy carbide ceramic powder and metal powder are subjected to conventional ball milling, 1-3 wt% of paraffin or a rubber forming agent is added, a ball milling medium is absolute ethyl alcohol, and then the mixture is subjected to spray granulation; step 4, pressing and forming the granulated powder; and fifthly, the pressed blank is degreased and sintered, and the ultra-fine grain high-entropy carbide-based metal ceramic is obtained. The ultra-fine grain high-entropy carbide-based metal ceramic material with the bending strength superior to 2300 MPa, the fracture toughness superior to 9.5 MPa.m < 0.5 > and the Rockwell hardness superior to 92.0 HRA can be obtained, and the ultra-fine grain high-entropy carbide-based metal ceramic material can be widely applied to the fields of bearing materials, cutting tools, mold materials and the like.

To provide a method for manufacturing a ceramic susceptor, capable of improving bonding force between the upper and lower plates of a MMC (a Metal Matric Composite) metal ceramic composite base body, and the ceramic susceptor.SOLUTION: A ceramic susceptor base body includes a body obtained by bonding lower and upper plates 210 and 220 consisting of a metal ceramic composite, respectively. A method for manufacturing the aceramic susceptor base body comprises steps of: successively laminating a first active metal layer 321, a first aluminum layer 322 and a blazing filler layer 323 on the bonded surface of the upper plate; successively laminating a second active metal layer 311 and a second aluminum layer 312 on the bonded surface of the lower plate; and brazing and bonding the lower and upper plates by the brazing filler layer.SELECTED DRAWING: Figure 2C

The invention belongs to the field of metal processing, and relates to an in-situ self-generated NiMoCoAlTi high-entropy alloy toughened metal ceramic material and a preparation method thereof. According to the invention, Ti (C, N) ceramic is used as a matrix, Ni, Mo, Co, Al and Ti are directly added as binders, and spark plasma coupling high-frequency induction sintering is carried out to obtain the high-temperature-resistant ceramic. The preparation method comprises the following steps: firstly, mixing Ti (C, N), Ni, Mo, Co, Al and Ti, then carrying out ball milling and drying to obtain powder, and carrying out spark plasma coupling high-frequency induction sintering. The method is beneficial to improving the mechanical property of the material, saves the preparation time of the high-entropy alloy powder, and has the advantages of being simple in preparation method, convenient to operate and the like. The obtained titanium carbonitride-based metal ceramic has higher toughness and hardness and excellent antifriction and wear-resisting properties, and can be used for manufacturing high-precision numerical control machine tool guide rails and other wear-resisting and corrosion-resisting parts.

The invention belongs to the technical field of material preparation, and aims to solve the problem that the comprehensive performance of a material is affected by non-uniform microstructure of the material due to the fact that the distribution and grain size of each phase in a metal ceramic matrix are difficult to accurately control in the conventional preparation process of the metal ceramic material. Therefore, the invention provides the preparation method of the fiber-reinforced metal ceramic material, and the preparation method comprises the following steps: pretreating silicon carbide fibers; mixing and grinding the titanium metal powder and the silicon carbide ceramic powder according to a preset proportion; adding silicon carbide fiber particles and putting the mixture into an ultrasonic mixer; adding a dispersing agent and a binding agent and mixing again; sequentially carrying out cold isostatic pressing molding and hot pressing molding on the mixture; and sequentially carrying out pre-sintering, high-temperature sintering, cutting and surface treatment on the obtained green body. The strength, toughness, hardness, high temperature resistance, wear resistance and corrosion resistance of the prepared metal ceramic material are remarkably improved, the high-performance requirement of the aviation field can be better met, and powerful support is provided for the aviation industry.

The invention discloses a rare earth metal ceramic and a preparation method thereof, and belongs to the technical field of metal ceramic preparation, the rare earth metal ceramic comprises, by mass, 45-65% of a ceramic phase, 30-50% of a metal binding phase and 3-8% of a rare earth additive, the ceramic phase is composed of one of TiC and WC and one of Al2O3 and ZrO2, the metal binding phase is composed of a Ni-Co alloy and Mo or Cr, and the rare earth additive is composed of one of Al2O3 and ZrO2. The rare earth additive is composed of mixed rare earth oxide and nano rare earth fluoride. The invention further provides a preparation method of the rare earth additive. Through the synergistic effect of oxide grain boundary purification and fluoride liquid phase sintering in a two-phase rare earth system, the problem that traditional single rare earth is difficult to add and disperse is solved, through staged hot pressing sintering, dual optimization of grain refinement and density improvement is achieved, and the high-temperature oxidation resistance and interface bonding strength of metal ceramic are enhanced.

The invention discloses a carbon nano tube reinforced tungsten carbide titanium metal ceramic material as well as a preparation method and application thereof, and belongs to the field of metal ceramic materials. According to the invention, a spark plasma coupling high-frequency induction sintering method is adopted, CNTs are uniformly dispersed in a material matrix through a method of dispersing CNTs through dry ball milling again, and the uniformly dispersed CNTs improve the discharge environment, reduce the sintering current and reduce the energy consumption under the spark plasma coupling high-frequency induction effect in the sintering process. The high-compactness, high-strength and high-wear-resistance (W, Ti) C-based metal ceramic material is prepared at the sintering temperature of 1350 DEG C by utilizing the ultrahigh conductive complementary effect of the (W, Ti) C metal ceramic material and the CNTs.

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.

A composite, comprising a binder, the binder comprising one or more of polymeric, metallic, or ceramic, or pyrolytic carbon binder and a nanostructured carbon having a cellular structure. The cellular structure comprises one or more cell walls having a structure formed by a template and one or more cavities. Each cavity is substantially enclosed by the one or more cell walls and substantially unimpregnated by a liquid or solid.

The invention discloses an anti-deformation industrial furnace water beam structure made of a gradient composite material and a preparation method. The water beam structure sequentially comprises a high-temperature-resistant gradient layer, a thermal stress buffer layer and a heat conduction base body layer from outside to inside. Wherein the high-temperature-resistant gradient layer is composed of a ceramic and / or metal ceramic material, and the components of the high-temperature-resistant gradient layer are in continuous or stepped transition from the outer surface to the inside in the thickness direction to form a metal material for resisting high-temperature oxidation and hot corrosion; the thermal stress buffer layer is composed of a metal-based composite material, the coefficient of thermal expansion (CTE) of the thermal stress buffer layer is between that of the high-temperature-resistant gradient layer and that of the heat-conducting matrix layer, and the thermal stress buffer layer is used for relieving And the heat-conducting matrix layer is made of a high-heat-conductivity metal material and is used for rapidly conducting out heat. Through collaborative optimization of materials and structures, the problems that a traditional water beam is concentrated in thermal stress and poor in thermal shock resistance are solved, and the water beam is suitable for long-term stable operation of a high-temperature industrial furnace.

The invention belongs to the technical field of metal ceramic, and particularly relates to a high-toughness metal ceramic particle and a preparation method thereof.The particle is characterized in that ceramic micro powder, surface modified ceramic powder and rare earth element carbonitride form a composite hard phase, and the composite hard phase is dispersed in a metal matrix composed of multiple metal elements; and synergistic regulation and control components are introduced to optimize interface bonding and tissue uniformity. Particles are subjected to a step-by-step heat treatment and isostatic pressing forming process, and a stable structure is formed by controlling the oxygen content and the sintering atmosphere. The obtained material has high bending strength, high fracture toughness and good thermal shock resistance, is suitable for the application field of wear resistance and crack resistance under extreme working conditions, and has tissue compactness and mechanical stability.

The invention discloses a preparation method of an ABM ceramic substrate with a metal through hole, and particularly relates to the technical field of ceramic substrates, a Si3N4 ceramic substrate is prepared through tape casting and hot pressed sintering, a conical stepped through hole is processed by using ultrafast femtosecond laser, the aperture of the through hole is 100-300 [mu] m, and the smoothness of the wall of the through hole is Rat; 1 [mu] m; performing oxygen plasma activation on the inner wall of the through hole to generate a Si-O active group; sputtering a nano titanium transition layer to enhance metal-ceramic interface bonding; the through holes are filled layer by layer through pulse electrochemical deposition, the current density is controlled, and a compact non-porous structure is achieved; in-Sn-Ag low-temperature active brazing filler metal is used, and a surface copper layer is bonded under the assistance of plasma; a fine circuit is formed through photoetching and micro-electroplating, the line width and the spacing of the circuit are the same, and the line width and the spacing of the circuit are both smaller than 20 microns; etching a micro-channel network on the back surface of the substrate by using ultraviolet laser, and filling heat-conducting silicone grease; and finally, carrying out vacuum annealing for 2 hours in an environment with the temperature of 250 DEG C.

The present invention relates to process for making a component comprising a composite material whereby three possible methods are detailed. More specifically, the invention relates to producing high performance composite materials, the method comprising surrounding nanofillers with specialized molecules that form covalently closed rings, where the matrix itself can be composed of polymers, metals, ceramics, or cement-based materials. The present invention also relates to a composite material comprising a nanofiller in the form of a nanotube or a graphene and further comprising a structural entity or matrix. Furthermore, the invention also relates to products or components made from the composite material.

The invention belongs to the technical field of thermal power heating surface treatment, and provides a gradient functional composite coating applied to a boiler heating surface and a preparation method of the gradient functional composite coating in order to solve the technical problems that an existing protective coating of the boiler heating surface is prone to abrasion and oxidation and high in cost. Collaborative design is formed, and gradient matching of mechanical properties and environmental failure resistance is achieved. The low-melting-point glass powder is combined with the rare earth catalytic effect, low-temperature ceramization is achieved, and thermal damage to a matrix is avoided. After the metal ceramic transition layer is sprayed, high-frequency induction remelting treatment is carried out, meanwhile, laser cladding is carried out on the surface of the ceramic surface layer, a nanocrystalline-amorphous composite structure is formed, and the bonding strength of the coating is improved.

The invention relates to an energy-level-controllable small laser irradiation grafting and crosslinking system and an application method thereof, and belongs to the technical field of material processing and modification. The system is composed of an adjustable laser source, a focusing optical system, a laser energy regulation and control module, a machining platform, a chemical reaction auxiliary module, a real-time monitoring and feedback system and an intelligent control system, laser wavelength, power and pulse width can be accurately controlled, and micron-level machining precision is achieved. Compared with a traditional chemical grafting method, a thermal induction crosslinking method and a plasma treatment method, the method has the remarkable advantages of non-contact processing, low energy consumption, high precision, environmental friendliness and the like. The system supports efficient grafting and crosslinking of various materials (such as polymers, metals and ceramics), the processing efficiency and the material performance are remarkably improved, and an innovative solution is provided for material functionalization and green manufacturing.

The invention discloses a wear-corrosion-resistant and toughness-integrated multi-process coupling high-entropy alloy bionic structure coating and a preparation method thereof, and aims to solve the problems that the toughness of a high-entropy alloy is difficult to synergistically improve and the corrosion resistance is insufficient. In the high-entropy alloy bionic structure coating, Al < x > FeCoCrNiy eutectic high-entropy alloy powder serves as cladding powder, a laser cladding process is adopted for preparing an eutectic high-entropy alloy coating on the surface of a base material, FeCoCrNiX high-entropy metal ceramic powder serves as cladding powder, and a high-entropy metal ceramic layer is formed on the eutectic high-entropy alloy coating in a cladding mode through the laser cladding process. And then ultrasonic deep rolling treatment is carried out, and a high-entropy alloy film is deposited on the composite coating. Based on the shell-shaped biological structure, the high-strength-and-toughness eutectic high-entropy alloy layer with the two phases serves as a transition layer to connect the base body and the high-entropy metal ceramic layer, the high-entropy alloy composite coating of the structure with the strong outer portion and the tough inner portion is formed, the overall wear-resisting and friction-reducing performance of the coating is improved, and the corrosion resistance of the surface of the coating is improved.

The invention provides a metal riveting structure for an alumina fiber battery shell and a preparation method. The problem of debonding caused by thermal expansion difference and insufficient interface bonding force in traditional metal and ceramic riveting is solved. The structure comprises a metal riveting piece, a connecting layer and a transition layer, a connecting rod of the metal riveting piece penetrates through an inner threaded hole of the connecting layer and goes deep into a stepped groove of the transition layer, and double connection of threaded screwing and stepped groove mechanical embedding is formed; a metal ceramic gradient layer is arranged between the transition layer and the connecting layer and is matched with a thermal expansion coefficient; the thickness of the diffusion layer is 10-100 microns, and the shear strength of the diffusion layer is larger than or equal to 50 MPa. The structure obviously increases the contact area, relieves the thermal stress, improves the interface strength and the long-term reliability in a wide temperature range, and is suitable for high-temperature battery shell connection.

The invention discloses a titanium carbonitride-based metal ceramic alloy with a micro-nano bicrystal plate-shaped structure and a preparation method of the titanium carbonitride-based metal ceramic alloy with the micro-nano bicrystal plate-shaped structure. Binding phase powder; a carbon-nitrogen balancing powder; the Fsss particle size of the first TiCN powder is larger than the Fsss particle size of the second TiCN powder. The interface bonding property of a hard phase and a binding phase is better, better impact toughness is achieved, TiC can effectively enhance the strength and hardness of CN of the formed binding phase-based composite material (TiM), the W element can achieve solid solution and strengthen the binding phase, the hardness of the material is improved, and the wear resistance of the material is improved; the balance carbon content can improve the hardness, strength and wear resistance of the steel, and the submicron second TiCN is used for refining grains, improving the toughness and increasing the hardness of hard particles, so that the toughness of the steel is remarkably improved, the work hardening capacity is improved, and the wear resistance of the steel is obviously improved.

A gradient multilayer nano Ti (C, N)-based metal ceramic and a preparation method thereof relate to the field of powder metallurgy, and the method comprises the following steps: S1, mixing 64.9% by mass of titanium carbonitride, 23% by mass of tungsten carbide, 8% by mass of cobalt, 4% by mass of molybdenum carbide and 0.1% by mass of graphene nanosheets to obtain mixed powder I; mixing 60.9% of titanium carbonitride, 23% of tungsten carbide, 8% of cobalt, 8% of molybdenum carbide and 0.1% of graphene nanosheets to obtain mixed powder II; and S2, the mixed powder I and the mixed powder II are added into a mold layer by layer, three layers of mixed powder with the surface layer being the mixed powder II layer and the core layer being the mixed powder I layer are obtained, spark plasma sintering is carried out, and the gradient multi-layer nano Ti (C, N)-based metal ceramic is obtained. According to the Ti (C, N)-based metal ceramic and the preparation method thereof, different molybdenum carbide mass proportions of the surface layer and the core layer are controlled, a hard phase enrichment area is formed on the surface layer, a binding phase enrichment area is formed on the inner core part, the Vickers hardness can be improved through hard phase enrichment, the fracture toughness can be improved through binding phase enrichment, and therefore the Ti (C, N)-based metal ceramic with the hardness and the fracture toughness is obtained.

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 present invention discloses a method for preparing a high-entropy carbide-based cermet, comprising the following steps: step one, preparing the cermet according to the molar ratio of the carbide additive phase, placing the powder in a sand mill, and first ball milling the cermet; step two, ball milling the cermet for the second time, adding a metal binder, carbon black, paraffin wax, rubber, or polyvinyl alcohol, and then ball milling the mixed carbide powder; after the ball milling is completed, the mixed powder is spray-dried; step three, pressing the powder into a shape at a pressure of 50-200 MPa; step four, degreasing and sintering the pressed green body to obtain a high-entropy carbide-based cermet. The present invention can obtain a flexural strength better than 2100 MPa and a fracture toughness better than 8.5 MPa·m 0.5 , Rockwell hardness better than 92.0, high entropy carbide-based metal ceramic materials can be widely used in bearing materials, cutting tools, mold materials and other fields.

The invention provides a high-temperature-resistant and corrosion-resistant ammonia water nozzle coating and a preparation method thereof, and belongs to the field of coatings. The ammonia water nozzle coating is composed of a self-repairing metal ceramic bonding layer, an organic-inorganic hybrid corrosion-resistant layer and a functional surface layer which are sequentially arranged in a stacked mode. A coating of the self-repairing metal ceramic bonding layer is composed of the following components of 90-99 parts of NiCrAlY alloy and 1-8 parts of self-repairing microcapsules. A coating of the organic-inorganic hybrid corrosion-resistant layer is prepared from the following components: 40 to 60 parts of fluorinated polyurethane prepolymer, 20 to 40 parts of silicon-aluminum sol, 1 to 8 parts of disulfide bond modified epoxy resin and 10 to 20 parts of magnesium-aluminum hydrotalcite; the coating of the functionalized surface layer is prepared from the following components: 20 to 30 parts of stearic acid modified TiO2 particles, 60 to 80 parts of waterborne polyurethane and 2 to 7 parts of ionic liquid modified SiO2 nanoparticles. The corrosion resistance, the high temperature resistance and the self-repairing capacity of the ammonia water nozzle are improved at the same time.

The invention relates to the technical field of metal ceramic composite materials for small reactors, in particular to a novel WC-based metal ceramic composite shielding material and a preparation process thereof.The composite shielding material is prepared from WC-based ceramic powder and high-entropy alloy powder through ball-milling mixing, pre-pressing forming and high-temperature and high-pressure sintering treatment; the mass ratio of the high-entropy alloy powder in the composite shielding material is 2%-10%. The high-purity WC-based ceramic and the high-entropy alloy are compounded through the steps of ball-milling mixing, pre-pressing treatment, high-temperature and high-pressure sintering and the like, the composite material with unique performance is formed, the uniformity and compactness of the material are ensured, the plasticity of the composite material is improved, the good ductility of the composite material is kept at the high temperature, the atomic diffusivity is reduced, and the mechanical property of the composite material is improved. The high-temperature stability of the material is improved, the high-entropy alloy can form a stable passive film on the surface, the corrosion resistance is further improved, and the comprehensive performance of the material is integrally improved.

The invention relates to the technical field of TRT blade surface laser cladding anti-corrosion and wear-resistant coating preparation, and discloses a TRT blade surface laser cladding anti-corrosion and wear-resistant coating preparation method which comprises the following steps: preparing a nickel-based alloy raw material, putting the nickel-based alloy raw material into a planetary ball mill to be subjected to ball milling treatment after being combined, and preparing a nickel-based alloy coating; the mixed powder is bonded on a steel base material base plate to form a TRT blade, the TRT blade is put into a drying oven to be dried, high-energy-density laser beams of laser cladding equipment are used for irradiating the powder coated on the surface of the TRT blade to enable the powder to be fused, then an anti-corrosion layer is formed, a metal ceramic gradient material is melted or softened, the metal ceramic gradient material is sprayed to the surface of the anti-corrosion layer, and the metal ceramic gradient material is sprayed to the surface of the anti-corrosion layer. Then the boron nitride coating and the anticorrosive layer are fused together through laser cladding equipment, a transition layer is formed, the boron nitride coating is prepared, the surface of the transition layer on the TRT blade is evenly coated with the boron nitride coating, the surface of the transition layer on the TRT blade is fused together through the laser cladding equipment, and a wear-resistant layer is formed; through the preparation method, the service life of the TRT blade is prolonged.

The invention provides a preparation method of a metal surface hard welding layer, and belongs to the technical field of metal material surface treatment. The modified tungsten-cobalt carbide is used for preparing the hard alloy, the nickel-based alloy powder and the metal ceramic particles are used together, the composite hard welding layer is obtained on the surface of the steel part base material, the hardness of the welding layer is effectively improved, meanwhile, the abrasion condition of the welding layer in use is reduced, and a thermal fatigue test can be effectively borne; and good wear resistance and high temperature resistance are obtained.

A coated cutting tool for metal machining has a base body of cemented carbide, cermet, ceramics, steel or high-speed steel, and a wear resistant coating deposited thereon. The coating includes a layer of Ti1-xAlxCyNz with 0.40≤x≤0.95, 0≤y≤0.10 and 0.85≤z≤1.15, and a portion of MeCaNb, 0≤a≤1, 0≤b≤1, a+b=1, present on the layer of Ti1-xAlxCyNz. The portion of MeCaNb covers from 5 to 28% of the layer of Ti1-xAlxCyNz. A process for the production of the coated cutting tool and the use of the coated cutting tool in machining of stainless steel is also provided.

A metal-ceramic substrate and an electronic component comprising a metal-ceramic substrate. The metal-ceramic substrate comprises: a) a ceramic body which has a main extension plane, b) a metal layer which is connected to the ceramic body, in a planar manner, the metal layer having a structuring region which comprises: (i) solid material in some areas and (ii) non-solid material in some areas, and c) a contact region comprising silver arranged on the metal layer, wherein, in a cross section through the metal-ceramic substrate perpendicular to the main extension plane, the structuring region has a geometry in which the following requirement is met:A⁡(BCDsolid) / A⁡(BCDtotal)>70⁢%,wherein A (BCDtotal) represents the total area of the triangle described by the points B, C and D, and A (BCDsolid) represents the area of the triangle described by the points B, C and D which is occupied by solid material.

The invention discloses a high-temperature-resistant metal ceramic-based self-lubricating composite material. The high-temperature-resistant metal ceramic-based self-lubricating composite material is composed of a high-entropy alloy, a non-stoichiometric hard phase and a solid lubricating phase. The prepared high-temperature-resistant metal ceramic-based self-lubricating composite material has the advantages of high temperature resistance, excellent oxidation resistance, wear resistance, high hardness and the like, and can be widely applied to the high-temperature wear-resistant field, such as high-speed train brake pads, large aircraft brake pads and the like.

The utility model provides an anti-chip-sticking metal ceramic milling cutter. The anti-chip-sticking metal ceramic milling cutter comprises a connecting column, the knife handle is arranged in the connecting column; the tool bit is arranged at one end of the tool handle, a chip removal groove is formed in a chip cutting part of the tool bit, and the tool handle and the tool bit are made of metal ceramic materials. The threaded rod is rotated to drive the conical block to move upwards, so that the threaded rod is separated from the screw hole, at the moment, the trapezoidal block is reset through the spring, the fixing rod is separated from the inserting hole, and then the extending length of the tool bit can be adjusted; and meanwhile, the conical block moves downwards to extrude the trapezoidal block and the fixing rod to move and compress the spring, so that the fixing rod extends into the insertion hole, and the cutter handle is fixed through the threaded rod and the fixing rod, so that the effect of adjusting the overall length of the milling cutter according to use requirements is achieved, and the use flexibility, applicability and efficiency of the milling cutter are effectively improved.