WO2019080106A1 - Élément structural composite à base de carbure de silicium et d'aluminium et procédé de préparation d'une préforme renforcée de carbure de silicium - Google Patents

Élément structural composite à base de carbure de silicium et d'aluminium et procédé de préparation d'une préforme renforcée de carbure de silicium

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Publication number
WO2019080106A1
WO2019080106A1 PCT/CN2017/108066 CN2017108066W WO2019080106A1 WO 2019080106 A1 WO2019080106 A1 WO 2019080106A1 CN 2017108066 W CN2017108066 W CN 2017108066W WO 2019080106 A1 WO2019080106 A1 WO 2019080106A1
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Prior art keywords
silicon carbide
aluminum
preform
particles
structural member
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Ceased
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PCT/CN2017/108066
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English (en)
Chinese (zh)
Inventor
庄后荣
曾俊
袁亮亮
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Shenzhen Tatfook Technology Co Ltd
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Shenzhen Tatfook Technology Co Ltd
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Priority to CN201780036232.4A priority Critical patent/CN109563002A/zh
Priority to PCT/CN2017/108066 priority patent/WO2019080106A1/fr
Publication of WO2019080106A1 publication Critical patent/WO2019080106A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B62D29/001—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
    • C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
    • C04B38/063—Preparing or treating the raw materials individually or as batches
    • C04B38/0635—Compounding ingredients
    • C04B38/0645—Burnable, meltable, sublimable materials
    • C04B38/068—Carbonaceous materials, e.g. coal, carbon, graphite, hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/51—Metallising, e.g. infiltration of sintered ceramic preforms with molten metal
    • C04B41/515—Other specific metals
    • C04B41/5155—Aluminium
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • C04B41/85—Coating or impregnation with inorganic materials
    • C04B41/88—Metals
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron

Definitions

  • the present application relates to the field of composite materials, and in particular, to a method for preparing a silicon carbide aluminum-based composite structural member and a silicon carbide-reinforced preform.
  • High-performance lightweight structural materials play an important strategic role in economic and national defense construction.
  • lightweight structural materials as matrix are mainly composed of Al, Mg and Ti alloys.
  • the reinforcement materials mainly include silicon carbide SiC and Al 2 O 3 . , BC 4 , TiB 2, etc.
  • silicon carbide aluminum AlSiC composite materials are widely used in aerospace, electronic packaging, optical instruments, sports equipment and other fields due to their excellent thermophysical properties and mechanical properties.
  • the AlSiC composite material is prepared by mixing SiC powder with a paraffin-based binder to form a uniform feed, and the feed is granulated and then injection-molded on an injection molding machine to obtain a SiC preform. Then, after solvent and thermal degreasing, pre-sintering at a temperature of 1000 to 1150 ° C, and finally, a molten solution of the Al alloy is infiltrated into the SiC skeleton by a pressureless infiltration method at a temperature of 1100 to 1200 ° C in a N 2 atmosphere. SiC/Al composite parts with high volume fraction.
  • the inventors of the present application found in the long-term development process that in the above method, when powder injection molding is used to prepare complex parts, it is required that the injected powder has good fluidity, a large amount of organic binder needs to be added, and the binder is removed.
  • the process is the most difficult part of the whole process, the degreasing time is long, and a large amount of exhaust gas generated during degreasing causes pollution to the environment.
  • the powder particle size is generally 0.5-20 um, which is suitable for the powder injection molding process.
  • the technical problem mainly solved by the present application is to provide a preparation method of a silicon carbide aluminum-based composite structural member and a preparation method of the silicon carbide reinforced preform, which can prepare a complex part or provide technical support thereof, and the powder is Plasticity requirements are not high.
  • a technical solution adopted by the present application is to provide a method for preparing a silicon carbide aluminum-based composite structural member, the method comprising: providing at least two silicon carbide particles having different average particle sizes; The silicon carbide particles with different average particle sizes are uniformly mixed; the binder is added to the uniformly mixed silicon carbide particles for kneading, and is formed by cold isostatic pressing technology. Forming a silicon carbide reinforced preform; forming the aluminum silicate-containing melt and the silicon carbide reinforced preform into the SiC-aluminum-based composite structural member by a vacuum liquid phase infiltration method.
  • another technical solution adopted by the present application is to provide a method for preparing a silicon carbide reinforced preform, the method comprising: providing at least two silicon carbide particles having different average particle sizes; The silicon carbide particles of different average particle sizes are uniformly mixed; the binder is added to the uniformly mixed silicon carbide particles for kneading, and is formed by cold isostatic pressing technology to form the silicon carbide reinforced preform.
  • the beneficial effects of the present application are: different from the prior art, in the preparation method of the silicon carbide aluminum-based composite structural member of the present application, at least two silicon carbide particles of different average particle sizes are provided; the predetermined average particle size of the predetermined ratio is The silicon carbide particles are uniformly mixed; the binder is added to the uniformly mixed silicon carbide particles for kneading, and is formed by cold isostatic pressing technology to form a silicon carbide reinforced preform; and the vacuum liquid phase infiltration method is adopted. The aluminum-containing melt and the silicon carbide-reinforced preform are formed into the silicon carbide-aluminum-based composite structural member.
  • the particles and the particles can be filled with each other, so that the silicon carbide preform can obtain sufficient strength; and by cold isostatic pressing technology, a large complicated shape structural member can be obtained.
  • the mold is cheap, the obtained preform has uniform density and high strength; vacuum pressurization performs liquid phase aluminizing on the SiC preform to obtain a high-strength AlSiC structural member.
  • FIG. 1 is a flow chart of an embodiment of a method for preparing a silicon carbide aluminum-based composite structural member of the present application
  • FIG. 2 is a flow chart of another embodiment of a method for preparing a silicon carbide aluminum-based composite structural member of the present application
  • FIG. 3 is a flow chart of an embodiment of a method for preparing a silicon carbide reinforced preform of the present application.
  • the lightweight of the car body is not simply to reduce the weight of the car, but to reduce the car body quality as much as possible while ensuring the strength and safety of the car body, while ensuring that the manufacturing cost of the car body is within a reasonable range.
  • the composite material has a low density (about 1/3 of aluminum alloy), high specific strength, impact resistance, good fracture toughness, good vibration and sound insulation performance, good design, corrosion resistance, etc. Industrial attention. See Table 1, Table 1 is a comparison of weight loss and relative cost after replacement of lightweight materials.
  • High-performance lightweight structural materials play an important strategic role in economic and national defense construction.
  • lightweight structural materials as matrix are mainly composed of three alloys of Al, Mg and Ti.
  • the reinforcement materials mainly include SiC, Al 2 O 3 and BC. 4 , TiB 2, etc.
  • the density of Mg alloy is lower than that of aluminum.
  • the composite material prepared from it has great potential in aerospace and automotive applications, but its high temperature stability is poor and it is difficult to be used as a key component.
  • Ti alloy matrix composites It has good oxidation resistance and high temperature mechanical properties, but its preparation cost is high and processing is difficult, which limits its wide use: the aluminum alloy is light in weight, the base alloy has a wide selection range, high strength, high toughness, heat resistance and corrosion resistance.
  • Aluminum is easy to recycle, can be recycled, and has good heat treatment properties. Therefore, aluminum alloy has become a widely used matrix material and has become the mainstream of current development and research work. Both pure aluminum and aluminum alloy can be used as the base metal, and the aluminum alloy base mainly has Al-Cu-Mg, Al-Mg-Si and Al-Zn-Mg alloys.
  • the reinforcing materials SiC has high strength, high hardness, good thermal stability and relatively low price, and has been widely used in reinforcing materials.
  • AlSiC composite materials are widely used in aerospace, electronic packaging, optical instruments, sports equipment and other fields due to their excellent thermophysical properties and mechanical properties.
  • automotive industry it is mainly used in high-temperature brake pads, cylinder pistons, bearing bushes and other high-temperature service fields.
  • Silicon carbide particles still have high modulus and strength under high temperature conditions, so SiC-reinforced aluminum-based composite materials are added. It has better high temperature performance than the original aluminum alloy, and significantly increases the specific strength and specific modulus of the parts, greatly reducing the weight of the parts.
  • SiC-based preforms are first prepared and then composited with AlSiC materials.
  • the AlSiC composite material is prepared.
  • the powder injection molding technology is adopted, and when the powder injection molding is used to prepare the complicated parts, the injection powder is required to have good fluidity, and a large amount of organic bonding is required.
  • the removal process of the agent and the binder is the most difficult part in the whole process, the degreasing time is long, and a large amount of waste gas generated during degreasing causes pollution to the environment, and the powder particle size is generally 0.5 to 20 um, which is suitable for the powder injection molding process, and Injection molding can only produce smaller-sized devices.
  • injection molding methods cannot obtain SiC preforms that meet the requirements.
  • the present application selects at least two silicon carbide particles of different average particle sizes, and the particles and the particles can be filled with each other, so that the silicon carbide preform can obtain sufficient strength; and the molding can be carried out by cold isostatic pressing technology.
  • the structural member of complex shape, and the mold is cheap, the obtained preform has uniform density and high strength; vacuum pressurization liquefoils the SiC preform to obtain high-strength AlSiC structural parts.
  • FIG. 1 is a flow chart of an embodiment of a method for preparing a silicon carbide aluminum-based composite structural member according to the present application, the method comprising:
  • Step S101 providing at least two silicon carbide particles of different average particle sizes.
  • silicon carbide particles have different geometric shapes.
  • the silicon carbide particles have irregular geometric shapes, are multi-faceted, and some particles have sharp sharp corners.
  • the preparation of SiC preforms from an average particle size of SiC particles is liable to cause incomplete filling between the particles, resulting in insufficient strength of the preforms.
  • the strength of the AlSiC composites is insufficient to be used as a structural member of the body.
  • two or more silicon carbide particles having different average particle sizes are selected, such that SiC particles of different sizes and SiC particles can be filled with each other, so that the SiC preform obtains sufficient strength.
  • the silicon carbide particles have an average particle size ranging from 3 to 150 um, for example, a silicon carbide particle having an average particle size of 3 um, a silicon carbide particle having an average particle size of 50 um, and an average particle size of a silicon carbide particle.
  • a silicon carbide particle has an average particle size of 150 um, and the like.
  • the average particle size of two or more kinds of silicon carbide particles is selected such as the strength requirement and the plasticity requirement of the material.
  • Step S102 mixing silicon carbide particles of different average particle sizes in a predetermined ratio uniformly.
  • a predetermined ratio of two or more different average particle size silicon carbide particles is determined, and then a predetermined proportion of silicon carbide particles of different average particle sizes are uniformly mixed.
  • Step S103 adding a binder to the uniformly-mixed silicon carbide particles for kneading, and molding by cold isostatic pressing technology to form a silicon carbide-reinforced preform.
  • the adhesive refers to a substance capable of bonding and bonding the surfaces of homogenous or heterogeneous objects together.
  • the adhesive includes but is not limited to: paraffin wax or a base material (for example, a particle size of 170 to 190 mesh) a composition of a mixture of silicon carbide and ferric oxide), an auxiliary material (for example, Guangxi white clay having a particle size of 310 to 330 mesh), or a binder containing a paraffin main component, or a commercial special binder for silicon carbide. ,and many more.
  • the mixture is kneaded by adding a binder to the uniformly mixed silicon carbide particles, wherein the kneading time is 4 to 12 hours, for example, 4 hours, 7 hours, 9 hours, 12 hours, and the like.
  • the mixing time is different, the strength of the obtained preforms is also different, and the strength of the final AlSiC composite structural member is also different. According to the actual application, the mixing time is too short or too long, which is not suitable.
  • the adhesive is a conventionally used paraffin wax, which is inexpensive and cost effective.
  • the paraffin is added in an amount of from 1% to 5% of the total amount of the silicon carbide particles after mixing, for example, 1%, 2%, 3%, 4%, 5%, and the like.
  • Isostatic pressing technology is an ultra-high pressure state in which the products in a closed high-pressure vessel are equalized in all directions. Advanced technology for forming ultra-high pressure hydraulics.
  • Cold Isostatic Pressing is a material used to coat rubber molds at room temperature, usually with rubber or plastic. It is mainly used for molding powder materials for further sintering, forging or heat. The isostatic pressing process provides a blank.
  • cold isostatic pressing technology has the following characteristics:
  • the working pressure is low; second, the density of the formed product is high; third, the density of the compact is uniform.
  • the pressure of the isostatically pressurized fluid medium is equal in all directions; the envelope is substantially consistent with the compression of the powder, and the powder and the sheath have no relative motion, the frictional resistance between them is small, and the pressure is only slightly decreased, therefore,
  • the density of the green body is uniform; fourthly, because the density is uniform, the aspect ratio can be unrestricted, which is favorable for producing a rod-shaped, tubular thin and long product; fifth, it is not necessary to add a lubricant to the powder, thereby reducing
  • the pollution of the product simplifies the manufacturing process; sixth, the product has excellent performance, short production cycle and wide application range.
  • the pressure for molding by cold isostatic pressing is 50 to 200 MPa
  • the mold used is a rubber mold.
  • the molding technology is suitable for preparing large and complex shaped structural parts, and the obtained preform has uniform density, and the sintered sample has good shrinkage consistency and near net shape.
  • the size of the rubber mold is such that the size of the sintered silicon carbide reinforced preform is slightly smaller than the size of the final product, so that the subsequent processing of the final product is facilitated, for example, the directional dimension of the sintered silicon carbide reinforced preform is larger than the final product.
  • the size is small 0.1% - 2%.
  • the present application adopts a rubber mold, and the powder is filled and pressed by cold isostatic pressing.
  • the rubber mold is not limited by the complexity of the shape of the product, and the cost is low, and the cold is cold.
  • the isostatic pressing makes the SiC blank force uniform, the green density is uniform, deformation is not easy to occur during sintering, and the net shape of the reinforcement can be achieved. Therefore, in general, by cold isostatic pressing technology, a large and complicated structural member can be obtained, and the mold is inexpensive, and the obtained preform has uniform density and high strength.
  • pre-sintering is also needed to degrease, that is, it also includes:
  • Step S105 pre-sintering the silicon carbide reinforced preform.
  • the pre-sintering temperature is 550 to 700 ° C, and the holding time is 0.5 h to 4 h. In this way, on the one hand, the added paraffin can be eliminated and on the other hand the strength of the preform can be maintained.
  • Step S104 The aluminum-containing molten liquid and the silicon carbide reinforced preform are formed into a silicon carbide aluminum-based composite structural member by a vacuum liquid phase infiltration method.
  • the vacuum liquid infiltration process is: firstly, the reinforcement material is made into a preform, and then the preform is placed in a mold located in the pressure vessel, and the gas in the preform is extracted, and the vacuum and the inert gas are combined. Pressure is applied to the molten metal from the passage into the mold to impregnate the preform.
  • the advantage of this method is that it has wide application range and is suitable for the preparation of a variety of composite materials.
  • the type, shape, size and volume fraction of the reinforcement material are basically not limited; the composite parts can be directly formed, especially the complicated shape.
  • the parts basically do not need subsequent processing; the immersion is carried out in vacuum, solidified under pressure, no defects such as pores, looseness, shrinkage, etc., compact structure, good material properties; simple process, easy to control parameters, according to reinforcement material and base metal The physical and chemical properties of the material, strict control of temperature, pressure and other parameters to avoid serious interface reactions.
  • the aluminum-containing aluminum alloy is melted and heated to 720 ° C to 780 ° C, and the temperature is 0.5 to 2 h, and the slag is removed to obtain an aluminum alloy melt;
  • the prepared SiC preform (for example, SiC)
  • the body prefabricated parts are placed in the aluminizing cavity, and the cavity and the SiC preform are vacuumed by a die-casting vacuum machine, so that the vacuum in the aluminizing cavity is lower than 1000 Pa, and the aluminum alloy melt is introduced into the aluminizing cavity to infiltrate.
  • the silicon carbide aluminum based composite structural member is used in automotive body structural members.
  • the low density of AlSiC composite structural parts can replace nearly two-thirds of the weight of low-carbon steel plates, and has high specific strength and specific modulus, high strength, high toughness, wear resistance, corrosion resistance, fatigue resistance, etc.
  • the row also enhances the safety and service life of the body.
  • FIG. 3 is a flow chart of an embodiment of a method for preparing a silicon carbide reinforced preform according to the present application, the method comprising:
  • Step S201 providing at least two silicon carbide particles of different average particle sizes.
  • Step S202 mixing silicon carbide particles of different average particle sizes in a predetermined ratio uniformly.
  • Step S203 adding a binder to the uniformly-mixed silicon carbide particles for kneading, and molding by cold isostatic pressing technology to form a silicon carbide-reinforced preform.
  • the silicon carbide particles have an average particle size ranging from 3 to 150 um.
  • the adhesive is paraffin wax.
  • the amount of paraffin added is from 1% to 5% of the total amount of the silicon carbide particles after being uniformly mixed.
  • the time for adding the binder to the uniformly mixed silicon carbide particles for kneading is 4 to 12 hours.
  • the pressure by cold isostatic pressing technology is 50-200 MPa
  • the mold used is rubber.
  • At least two silicon carbide particles having different average particle sizes are selected, and the particles and the particles can be filled with each other, so that the silicon carbide preform can obtain sufficient strength; and by cold isostatic pressing technology, large complex shapes can be obtained.
  • the structural parts, and the mold is cheap, the obtained preform has uniform density and high strength; in this way, technical support can be provided for preparing the AlSiC composite structural member.
  • the B-pillar of the car body is prepared by using the AlSiC composite structural member as an example.
  • the traditional B-pillar cross-section shape is more complicated, and it is welded by multiple pieces of stamped steel plate.
  • the B-pillar Excluding the interior and the outer cover, the B-pillar is generally divided into an inner plate, a reinforcing plate and an outer plate from the inside to the outside, and basically belongs to a closed thin-walled beam structure, and The upper and lower joints are connected to the top side sill and the door frame by welding.
  • the reinforcing plate structure is usually a small assembly, and the seat belt and the door are installed through the B-pillar.
  • the position of the lock and other accessories is required to be relatively rigid, it is necessary to install a corresponding reinforcing plate.
  • the excessive reinforcing plate is not only disadvantageous to the weight reduction of the vehicle body, but also complicates the design of the vehicle body and the assembly of the entire vehicle.
  • the B-pillar structure of the inner and outer plates is still adopted, and the upper and lower joints of the B-pillar are respectively formed on the inner and outer plates, and are integrally formed in the production process, and are realized by the following process steps.
  • Rubber mold design According to the plan of integrally forming the B-pillar and the upper and lower joints, the net-formed SiC reinforcement preform is slightly smaller than the final product size after sintering, which is convenient for final machining.
  • SiC particles and 3 wt% paraffin (3% of the total amount of SiC particles) were kneaded in a ratio of 1:1 in an average particle size range of 4.0 um and 30.0 um, and the kneading time was 4 h. A granulated powder is obtained.
  • the granulated powder obtained in the step 2 is filled into a rubber mold to ensure uniform filling of the powder and uniform density of looseness, and is formed by cold isostatic pressing under a pressure of 100 MPa.
  • the SiC green body of the step 3 is pre-sintered at a sintering temperature of 700 ° C for 4 hours to volatilize the paraffin, and at the same time, a SiC reinforcement preform having a porous structure having a certain strength is obtained.
  • the product obtained in the step 5 is further processed. According to the product design, only the aluminum alloy portion other than AlSiC needs to be removed by machining according to the final size.
  • the front side member of the car body is prepared by using an AlSiC composite structural member as an example.
  • thin-walled members stamped from low-carbon steel sheets are widely used and can be welded to other members through flanges. They are the main energy absorbing members in the collision of vehicles, including the front longitudinal beam and the body side of the automobile. In the surrounding parts such as the surrounding floor and the floor, the cross section of the front side of the conventional automobile is a thin-walled rectangular structure. When a car has a frontal collision, it mainly absorbs the kinetic energy of the collision by the plastic deformation of the front part of the vehicle body. The main role is the front longitudinal beam.
  • the aluminum SiC composite structural member Compared with the low carbon steel material of the traditional front sill of the automobile, the aluminum SiC composite structural member has higher yield strength and energy absorbing ability, and at the same time achieves the purpose of greatly reducing weight.
  • Rubber mold design According to the design of the front section of the slot section, the net-formed SiC reinforcement preform is slightly smaller than the final product size after sintering, which is convenient for final machining.
  • the granulated powder obtained in the step 2 is filled into a rubber mold to ensure uniform filling of the powder and uniform bulk density, and is formed by cold isostatic pressing under a pressure of 150 MPa.
  • the SiC green body of the step 3 is pre-sintered at a sintering temperature of 700 ° C for 4 hours to volatilize the paraffin, and at the same time, a SiC reinforcement preform having a porous structure having a certain strength is obtained.
  • the product obtained in the step 5 is further processed. According to the product design, only the aluminum alloy portion other than AlSiC needs to be removed by machining according to the final size.
  • the above specific embodiment is a silicon carbide aluminum-based composite structural member for use in an automobile body structural member.
  • the low density of AlSiC composite structural parts can replace nearly two-thirds of the weight of low-carbon steel plates, and has high specific strength and specific modulus, high strength, high toughness, wear resistance, corrosion resistance, fatigue resistance, etc.
  • the row also enhances the safety and service life of the body.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Architecture (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Abstract

L'invention concerne un élément structural composite à base de carbure de silicium et d'aluminium et un procédé de préparation d'une préforme renforcée de carbure de silicium, ledit procédé consistant à : utiliser au moins deux sortes de particules de carbure de silicium présentant des grosseurs moyennes de particule différentes ; mélanger uniformément, à un rapport prédéterminé, les particules de carbure de silicium présentant des grosseurs moyennes de particule différentes ; ajouter un adhésif aux particules de carbure de silicium mélangées uniformément pour le mélange, les façonner au moyen d'une technologie de pressage isostatique à froid, de manière à préparer une préforme renforcée de carbure de silicium ; et transformer, au moyen d'une infiltration en phase liquide sous vide, un liquide fondu contenant de l'aluminium et la préforme renforcée de carbure de silicium en l'élément structural composite à base de carbure de silicium et d'aluminium. De cette manière, il est possible de préparer des pièces complexes ou de fournir un support technique associé, sans nécessiter une aptitude élevée au moulage des poudres.
PCT/CN2017/108066 2017-10-27 2017-10-27 Élément structural composite à base de carbure de silicium et d'aluminium et procédé de préparation d'une préforme renforcée de carbure de silicium Ceased WO2019080106A1 (fr)

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CN201780036232.4A CN109563002A (zh) 2017-10-27 2017-10-27 碳化硅铝基复合结构件及碳化硅增强预制件的制备方法
PCT/CN2017/108066 WO2019080106A1 (fr) 2017-10-27 2017-10-27 Élément structural composite à base de carbure de silicium et d'aluminium et procédé de préparation d'une préforme renforcée de carbure de silicium

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116694949A (zh) * 2023-06-12 2023-09-05 洛阳亿特立新材料科技有限公司 一种铝碳化硅复合材料及其制备方法
CN120555801A (zh) * 2025-05-30 2025-08-29 杭州陶飞仑新材料有限公司 一种铝碳化硅的表面改性工艺

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111138198A (zh) * 2019-12-30 2020-05-12 珠海凯利得新材料有限公司 一种铝碳化硅复合材料的制备方法及其应用
CN116782602B (zh) * 2023-06-28 2026-04-07 洛阳亿特立新材料科技有限公司 一种矿用功率器件散热装置及其制备方法
CN117682864B (zh) * 2023-11-28 2026-01-06 宁波伏尔肯科技股份有限公司 一种铝碳化硅复合材料的制备方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1644276A (zh) * 2005-01-05 2005-07-27 北京科技大学 制备高体积分数碳化硅颗粒增强铝基复合材料零件方法
CN101691646A (zh) * 2009-05-06 2010-04-07 北京科技大学 一种制备SiCp和SiCw混杂增强/Al复合材料的方法
US20110187030A1 (en) * 2008-09-24 2011-08-04 Ube Industries, Ltd. PROCESS FOR PRODUCING SiC FIBER-BONDED CERAMICS
EP2998282A1 (fr) * 2014-09-18 2016-03-23 Toto Ltd. Procédé de production d'élément en carbure de silicium lié par réaction
CN105884367A (zh) * 2016-04-18 2016-08-24 湖南浩威特科技发展有限公司 碳化硅预制件废料的回收方法
CN105924178A (zh) * 2016-04-18 2016-09-07 湖南浩威特科技发展有限公司 铝碳化硅复合材料的制备方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101838755A (zh) * 2010-06-13 2010-09-22 上海交通大学 局域化颗粒增强金属基复合材料及其制备方法
CN102093056A (zh) * 2010-12-08 2011-06-15 湖南浩威特科技发展有限公司 网络互穿结构铝碳化硅复合材料及其构件的制备方法
CN102191398B (zh) * 2011-04-22 2012-11-21 湖南航天诚远精密机械有限公司 一种制备高体积分数铝基碳化硅颗粒增强复合材料方法
CN102628137A (zh) * 2012-04-24 2012-08-08 南昌航空大学 一种制备碳化硅颗粒增强铝基复合材料的方法
CN103540830B (zh) * 2013-11-14 2015-08-26 湖南航天工业总公司 一种制备碳化硅和金刚石颗粒增强铝基复合材料的方法
CN104498778B (zh) * 2014-12-15 2017-01-04 中国兵器科学研究院宁波分院 高碳化硅含量铝基复合材料及其制备方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1644276A (zh) * 2005-01-05 2005-07-27 北京科技大学 制备高体积分数碳化硅颗粒增强铝基复合材料零件方法
US20110187030A1 (en) * 2008-09-24 2011-08-04 Ube Industries, Ltd. PROCESS FOR PRODUCING SiC FIBER-BONDED CERAMICS
CN101691646A (zh) * 2009-05-06 2010-04-07 北京科技大学 一种制备SiCp和SiCw混杂增强/Al复合材料的方法
EP2998282A1 (fr) * 2014-09-18 2016-03-23 Toto Ltd. Procédé de production d'élément en carbure de silicium lié par réaction
CN105884367A (zh) * 2016-04-18 2016-08-24 湖南浩威特科技发展有限公司 碳化硅预制件废料的回收方法
CN105924178A (zh) * 2016-04-18 2016-09-07 湖南浩威特科技发展有限公司 铝碳化硅复合材料的制备方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116694949A (zh) * 2023-06-12 2023-09-05 洛阳亿特立新材料科技有限公司 一种铝碳化硅复合材料及其制备方法
CN120555801A (zh) * 2025-05-30 2025-08-29 杭州陶飞仑新材料有限公司 一种铝碳化硅的表面改性工艺

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