CN118272691A - Efficient forming method and application of high-performance bionic Briggy structural ceramic particle reinforced metal matrix composite material - Google Patents
Efficient forming method and application of high-performance bionic Briggy structural ceramic particle reinforced metal matrix composite material Download PDFInfo
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Abstract
A high-performance efficient molding method and application of a ceramic particle reinforced metal matrix composite material with a bionic Briggy structure. The invention belongs to the field of preparation of ceramic particle reinforced composite materials. The invention provides a high-efficiency molding method of a high-performance bionic Briggan structural ceramic particle reinforced metal matrix composite material, which comprises the steps of firstly establishing a Briggan structural three-dimensional model, then carrying out ceramic particle powder paving and binder spraying layer by layer according to the three-dimensional model, drying after printing is finished to obtain a Briggan structural ceramic blank, and sintering the blank to obtain a preform; further, the molten metal after heating is infiltrated into the preform by a hydraulic press. The method provided by the invention is efficient, convenient and fast, effectively solves the inherent defects of the 3D printing method of the ceramic particle reinforced composite material, and can be widely applied to the field of preparing the ceramic reinforced composite material by 3D printing. The obtained composite material has toughness and can be applied to the fields of aerospace, military, construction and the like.
Description
Technical Field
The invention belongs to the field of preparation of ceramic particle reinforced composite materials, and particularly relates to a high-efficiency forming method and application of a high-performance bionic Briggan structure ceramic particle reinforced metal matrix composite material.
Background
In recent years, lightweight and high-performance structural materials are widely used in the strategic fields of aerospace, military, construction and the like. However, it is increasingly difficult to meet the related strategic requirements of traditional structural materials to accelerate the development of advanced structural materials. Therefore, how to prepare high-performance structural materials is particularly critical and urgent. The Briggy structure is formed by spirally stacking unidirectional sheet layers, and the structures are contained in fish scales and lobster shells, so that the Briggy structure directly determines the excellent mechanical properties of the biological materials. In addition, the structure of Briggy is very common in natural biological materials, and is found in plant and animal tissues, and the natural biological materials with the structure of Briggy have good mechanical properties because of the exquisite structure, excellent mechanical properties and unique composition-structure-property relationship, which are attracting great attention. Therefore, the application of the Briggy structure to structural materials to enhance the properties of the materials has been attracting attention in recent years.
The method for artificially preparing the Briggy structure mainly comprises the following steps: self-assembly, shearing and brushing, electrostatic spinning, freeze drying and 3D printing. The self-assembly method is an effective and accurate method of arranging the nanofiber building blocks into a hierarchical helical structure. For example, cellulose nanocrystals (CNCs, extracted primarily from cellulose plant tissue) and chitin nanofibers (extracted primarily from the shell of marine crustaceans) can be assembled in order to form the Briggy structure. The shear brushing method is to induce the assembly of anisotropic fiber members by means of shear forces. The electrostatic spinning method is mainly used for preparing nanofiber Briggan structural materials, and ordered nanofiber sheets can be obtained by controlling parameters such as a heat collector, voltage, distance between a spinning nozzle and the heat collector, concentration, viscosity, flow rate and the like of raw materials. And manufacturing the bionic Briggy structural nanofiber. The freeze-drying method (also referred to as an ice template method) is a method for obtaining an ordered porous scaffold by inducing directional growth and sublimating ice crystals, and is inspired by the crustacean exoskeleton structure of the brigon characteristics, and a layered interlaced structure composite material can be manufactured through a bidirectional freeze-drying strategy by using silicon carbide (SiC) whiskers and auxiliary components.
3D printing (also known as additive manufacturing) is a fast and efficient method for preparing biomimetic structural materials, and the process of preparing the brigon structural material using 3D printing technology is mainly focused on Fused Deposition (FDM) and direct writing (DIW), but still has the following problems: (1) Ceramic materials can hardly be printed with fused deposition FDM due to their inherent melting difficulties, whereas the use of direct writing requires the configuration of appropriate paste and subsequent curing problems during printing of the ceramic materials. (2) The accuracy of direct writing (DIW) forming members depends on a variety of factors, such as the formulation of the ink material, the physical and chemical properties of the components, the viscosity of the system, and the rheological properties. Fused Deposition (FDM) modeling build surfaces have more pronounced streaks and less strength in the direction perpendicular to the cross-section. Therefore, there is an urgent need to develop a method of forming a high-performance composite material based on ceramic particle reinforcement.
Disclosure of Invention
In order to overcome the technical problems, the invention provides a high-efficiency forming method and application of a high-performance bionic Briggan structure ceramic particle reinforced metal matrix composite material.
The technical scheme of the invention is as follows:
The invention aims to provide a high-efficiency molding method of a high-performance bionic Briggan structural ceramic particle reinforced metal matrix composite material, which comprises the following steps of:
s1: establishing a three-dimensional model of the Briggy structure, paving powder and spraying binder on ceramic particles layer by layer according to the three-dimensional model, drying after printing to obtain a ceramic body of the Briggy structure, and sintering the body to obtain a preform;
S2: and impregnating the heated and melted molten metal liquid into the preform by a hydraulic press to obtain the high-performance bionic Briggy structural ceramic particle reinforced metal matrix composite.
Further defined, the ceramic particles in S1 comprise SiC.
Further defined, the binder in S1 is selected from commercial organic binders.
Further limited, the three-dimensional model of the Briggy structure in S1 comprises a plurality of stacked elementary sheet layers, each elementary sheet layer is composed of a plurality of solid cylinders, the diameters of the solid cylinders are 300-500 mu m, and the rotation angles between adjacent elementary sheet layers are 15-45 degrees.
Further limited, in the jet printing process in S1, the temperature of the powder bed is 40-50 ℃, the thickness of the single-layer powder paving is 40-60 mu m, and the saturation of the binder is 70-80%.
Further limited, the sintering temperature in S1 is 1350-1450 ℃, the heat preservation time is 2-5h, the temperature is raised at the speed of 1-3 ℃/min in the temperature range of 350-450 ℃, and the temperature raising speed in the rest temperature ranges is 3-5 ℃/min.
Further defined, the molten metal in S2 includes aluminum and aluminum alloy.
Further defined, the infiltration process in S2 is: firstly, maintaining the pressure for 1-2s under the pressure of 0.5-1.5MPa, then, increasing the pressure to 100-150MPa in 1-3s, and maintaining the pressure for 5-8min.
It is a second object of the present invention to provide an application of the above method in 3D printing of ceramic reinforced composites.
The third object of the present invention is to provide a high-performance ceramic particle reinforced metal matrix composite material with a bionic Briggan structure, wherein the ceramic particle volume content is 10-16%.
The fourth object of the invention is to provide the application of the high-performance bionic Briggy structural ceramic particle reinforced metal matrix composite material prepared by the method in the fields of aerospace, military and construction.
Compared with the prior art, the invention has the advantages that:
The invention aims at the problems that the strength and the rigidity of the metal matrix composite material are increased but the plastic toughness is obviously reduced (namely, the strength-toughness is inverted) along with the increase of a ceramic reinforcement in the preparation process of the uniform metal matrix composite material. A preparation method of a ceramic particle reinforced metal matrix composite material with high toughness is developed. The method has the specific advantages that:
(1) According to the invention, ceramic particles with the particle size of 5-15 mu m are used as raw materials, a ceramic green body with a bionic Briggon structure is prepared through binder injection, and a ceramic particle reinforced metal matrix composite with synchronously improved toughness is obtained through a pressureless sintering and pressure infiltration method.
(2) According to the preparation method, the ceramic blank with the Briggan structure is subjected to pressureless sintering, and the sintering process is regulated, so that the strength of the preform is improved, the binder is removed, the ceramic is promoted to be partially oxidized, and the preform which has pores with two sizes and contains oxide of ceramic components is formed, thereby being beneficial to preparing the composite material by subsequent infiltration.
(3) According to the invention, through regulating and controlling the infiltration process, the pressure of 0.5-1.5MPa is firstly applied to promote the infiltration of the metal liquid into the large-size pores in the ceramic preform; and then rapidly increasing the pressure to 100-150MPa within 1-3s, so that the molten metal is enabled to infiltrate into small-size pores in the ceramic preform under the action of pressure, namely, the SiC preform structure is ensured to be kept intact in the infiltration process, meanwhile, secondary phases are effectively separated out, the strength of the composite material is obviously improved, meanwhile, excellent plasticity and toughness are ensured, and the compression strain rate is as high as 3 multiplied by 10 -4s-1 through a normal-temperature compression performance test.
(4) The method provided by the invention is efficient, convenient and fast, effectively solves the inherent defects of the 3D printing method of the ceramic particle reinforced composite material, and can be widely applied to the field of preparing the ceramic reinforced composite material by 3D printing.
Drawings
FIG. 1 is a three-dimensional model of a Briggy structure built using Solidworks in accordance with the present invention;
FIG. 2 is a photograph of a SiC ceramic green body prepared in example 1;
FIG. 3 is a photograph of a SiC ceramic preform prepared in example 1;
FIG. 4 is an XRD pattern of the SiC ceramic preform prepared in example 1;
FIG. 5 is a SEM image of the microstructure of the SiC ceramic preform prepared in example 1;
FIG. 6 is a microstructure photograph of a cross section of the SiC reinforced aluminum matrix composite material with a bionic Briggy structure prepared in example 1;
FIG. 7 is a microstructure photograph of a longitudinal section of the SiC reinforced aluminum matrix composite material with a bionic Briggy structure prepared in example 1;
FIG. 8 is a microstructure photograph of a cross section of a SiC reinforced aluminum matrix composite material with a bionic Briggy structure prepared in example 2;
FIG. 9 is a microstructure photograph of a longitudinal section of the SiC reinforced aluminum matrix composite material with a bionic Briggy structure prepared in example 2;
Fig. 10 is a compressive stress-strain curve of the SiC-reinforced aluminum matrix composite having a bionic brigon structure prepared in example 2.
Detailed Description
The invention provides a high-efficiency forming method of a high-performance bionic Briggy structure SiC reinforced aluminum matrix composite material, which comprises the following steps:
(1) With reference to fig. 1, a three-dimensional model of the brigang structure is built: the Briggy structure comprises a plurality of primitive layer structures stacked by rotating in the same direction by a preset angle in sequence, the primitive layer structures comprise a plurality of solid cylinders which are arranged in the same direction, the diameter of each solid cylinder is 300-500 mu m, the preset angle is rotated by 15-45 degrees, a three-dimensional model of the Briggy structure is built by utilizing Solidworks, two-dimensional processing is carried out on the three-dimensional model to obtain two-dimensional slice data, and the two-dimensional slice data is led into jetting equipment for operation processing;
(2) Preparing a Briggan structural ceramic green body: spraying and printing layer by layer according to the three-dimensional model and the two-dimensional slice data, wherein the ceramic particles comprise SiC, the binder is selected from commercial organic binders, preferably acrylic binders, the powder bed temperature is 40-50 ℃, the single-layer powder laying thickness of the ceramic particles (with the particle size of 5-15 mu m) is 40-60 mu m, the saturation of the binder is 70-80%, after printing, the ceramic particles are placed in a vacuum drying oven, heat is preserved for 4-6h at 180-200 ℃, and then powder cleaning is carried out by an air gun with the diameter of 1mm, so that a ceramic blank with a Briggy structure is obtained;
(3) Preparing a prefabricated body with a Briggy structure: placing the ceramic body with the Briggan structure in a tubular furnace which is filled with high-purity oxygen for pressureless sintering, wherein the oxygen purity is 99.999%, the sintering temperature is 1350-1450 ℃, the heat preservation time is 2-5h, the temperature is increased at the rate of 1-3 ℃/min in the temperature range of 350-450 ℃, the temperature increasing rate of 3-5 ℃/min in the rest temperature ranges, the strength of the preform is improved, the binder is removed, and the ceramic is promoted to be partially oxidized in the whole sintering process, so that the subsequent infiltration preparation of the composite material is facilitated; the obtained ceramic preform has pores with two sizes, wherein the large-size pores are the pores between ceramic layers (solid cylinders), the pore diameter is 500 mu m, the porosity is 60.03-70.70%, the small-size pores are the pores in the ceramic layers, the pore diameter is 1.14-6.48 mu m, and the porosity is 60-70%;
(4) Preparing molten metal: placing a pure aluminum ingot or an aluminum alloy ingot in a crucible, heating to 780-850 ℃ in a resistance furnace, and preserving heat for 60-120min to melt the pure aluminum ingot or the aluminum alloy ingot to obtain molten metal;
(5) Preparing a Briggy structural ceramic particle/metal matrix composite material: placing the ceramic preform obtained in the step (3) in the middle of a graphite pad, placing both in hot working die steel, heating to 550-580 ℃ by using a ring-shaped resistance furnace, preserving heat for 30-60min, pouring molten metal into a die, placing the graphite pad and a pressure head on the die, wherein the graphite pad is made of high-strength graphite, has a cylindrical shape with a diameter of 80mm, and is provided with a middle through hole. Pressurizing by using a hydraulic press, and firstly applying pressure of 0.5-1.5MPa to promote molten metal to infiltrate into large-size pores in the ceramic preform; then increasing the pressure to 100-150MPa in 1-3s, and promoting the molten metal to infiltrate into small-size pores in the ceramic preform under the action of the pressure; and continuing to maintain the pressure for 5-8min, and completely solidifying the infiltrated metal liquid under the action of pressure to obtain the high-performance bionic Briggan structure ceramic particle reinforced metal matrix composite material, wherein the volume fraction of the ceramic particles is 10-16%.
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The experimental methods used in the following examples are conventional methods unless otherwise specified. The materials, reagents, methods and apparatus used, without any particular description, are those conventional in the art and are commercially available to those skilled in the art.
The high-efficiency forming method of the high-performance bionic Briggy structure SiC reinforced aluminum matrix composite in the embodiment 1 is carried out according to the following steps:
(1) With reference to fig. 1, a three-dimensional model of the brigang structure is built: the Briggy structure comprises a plurality of primitive layer structures stacked by rotating in the same direction by a preset angle in sequence, the primitive layer structures comprise a plurality of solid cylinders which are arranged in the same direction, the diameter of each solid cylinder is 300 mu m, the preset angle is rotated by 15 degrees, the three-dimensional model of the Briggy structure is built by utilizing Solidworks, the three-dimensional model is subjected to two-dimensional processing to obtain two-dimensional slice data, and the two-dimensional slice data is led into jet equipment for operation processing;
(2) Preparing a Briggy structural SiC ceramic green body: spraying and printing layer by layer according to the three-dimensional model and the two-dimensional slice data, wherein the binder is commercial binder BA005 of ExOne in America, the powder bed temperature is 45 ℃, the single-layer powder spreading thickness of SiC ceramic particles (particle size is 5-15 mu m) is 50 mu m, the saturation of the binder is 75%, after printing, the powder is subjected to heat preservation in a vacuum drying oven for 4 hours at 180 ℃, and then powder cleaning is carried out by an air gun with the diameter of 1mm, so that a SiC ceramic blank with the Briggy structure with the diameter of 30mm and the height of 30mm is obtained; fig. 2 is a photograph of the green body, with a total SiC ceramic volume fraction of 12.72%.
(3) Preparing a prefabricated body with a Briggy structure: and (3) placing the SiC ceramic body with the Briggy structure in a tubular furnace filled with high-purity oxygen for pressureless sintering, wherein the oxygen purity is 99.999%, the sintering temperature is 1400 ℃, the heat preservation time is 3h, the temperature is increased at the rate of 2 ℃/min in the temperature range of 350-450 ℃, and the heating rate of the rest temperature ranges is 4 ℃/min, so that the SiC ceramic preform containing SiO 2 is obtained. In the whole sintering engineering, the strength of the preform is improved, the binder is removed, and the SiC ceramic is promoted to be partially oxidized, so that the subsequent infiltration preparation of the composite material is facilitated; the obtained SiC ceramic preform had pores of two sizes, in which the large-size pores were pores between SiC ceramic layers (solid cylinders), the pore diameter was 500 μm, the porosity was 70.7%, and the small-size pores were pores within the SiC ceramic layers; fig. 3 is a photograph of a SiC ceramic preform formed after pressureless sintering, and it can be seen that the structure of the brigon structure remains intact during 3D printing and pressureless sintering. Fig. 4 characterizes the phase composition of the SiC preform. As can be seen from XRD patterns, a plurality of SiO 2 diffraction peaks exist in the SiC ceramic preform, the existence of SiO 2 is proved, the SiO 2 is introduced to improve the dispersion of SiC particles in an alloy melt, the wettability of the system can be improved, and the generation of a harmful interface product Al 4C3 can be effectively inhibited, so that the existence of SiO 2 on the SiC surface is beneficial to the infiltration of metal Al. Fig. 5 is a graph showing the morphology of a SiC ceramic preform formed after sintering, and it can be seen that sintering necks are formed between different ceramic particles after sintering, and at the same time, it can be seen that small pores exist, the average pore size is 3.81 μm, and the porosity is 60.4%.
(4) Preparing an aluminum liquid: placing 2024 aluminum alloy ingot in a crucible, heating to 800 ℃ in a resistance furnace, and preserving heat for 80min to melt the 2024 aluminum alloy ingot to obtain aluminum liquid;
(5) Preparing a Briggy structural SiC/Al-based composite material: placing the SiC ceramic preform obtained in the step (3) in the middle of a graphite pad, placing both in hot working die steel, heating to 560 ℃ by using a ring-shaped resistance furnace, preserving heat for 40min, pouring aluminum liquid into a die, placing the graphite pad and a pressure head on the die, and selecting high-strength graphite as the material of the graphite pad, wherein the whole graphite pad is cylindrical with the diameter of 80mm, and forming a middle through hole of the graphite pad. Pressurizing by using a hydraulic press, firstly applying pressure of 1MPa, and promoting molten aluminum to infiltrate into large-size pores in the SiC ceramic preform; then increasing the pressure to 120MPa within 2s, and promoting the aluminum liquid to infiltrate into small-size pores in the SiC ceramic preform under the action of the pressure; and (3) continuously maintaining the pressure for 6min, and completely solidifying the impregnated aluminum liquid under the action of pressure to obtain the high-performance bionic Briggy structure SiC reinforced aluminum matrix composite (the volume fraction of SiC ceramic is 11.72%, and the volume fraction of 2024 aluminum alloy is 88.28%).
FIG. 6 is a photograph of a microstructure of a cross section of the resulting SiC/Al-based composite material having a bionic Briggy structure. The whole graph is divided into two parts by using a dotted line, wherein I represents the range of the aluminum alloy matrix, and II represents the SiC ceramic enriched area. From the microstructure of the transverse and longitudinal sections, it can be seen that the structure of the SiC preform in the composite remains intact, and that the 2024 aluminum alloy is a two-system al—cu alloy, so that a secondary phase (Al 2 Cu) precipitates during infiltration, and appears white in the microstructure photograph. In addition, the composite material is compact in molding and has no obvious defect.
FIG. 7 is a cross section of a single SiC ceramic enrichment region in a prepared SiC/Al-based composite material with a bionic Briggy structure, and it can be seen that the diameter of a cylinder of the single SiC ceramic enrichment region is 300 μm, and the cylinder is well combined with aluminum in the SiC ceramic enrichment region.
The high-efficiency forming method of the high-performance bionic Briggy structure SiC reinforced aluminum matrix composite in the embodiment 2 is carried out according to the following steps:
(1) With reference to fig. 1, a three-dimensional model of the brigang structure is built: the Briggy structure comprises a plurality of primitive layer structures stacked by rotating in the same direction by a preset angle in sequence, the primitive layer structures comprise a plurality of solid cylinders which are arranged in the same direction, the diameter of each solid cylinder is 400 mu m, the preset angle is rotated by 30 degrees, the three-dimensional model of the Briggy structure is built by utilizing Solidworks, the three-dimensional model is subjected to two-dimensional processing to obtain two-dimensional slice data, and the two-dimensional slice data is led into jet equipment for operation processing;
(2) Preparing a Briggy structural SiC ceramic green body: spraying and printing layer by layer according to the three-dimensional model and the two-dimensional slice data, wherein the binder is commercial binder BA005 of ExOne in America, the powder bed temperature is 45 ℃, the single-layer powder spreading thickness of SiC ceramic particles (particle size is 5-15 mu m) is 50 mu m, the saturation of the binder is 75%, after printing, the powder is subjected to heat preservation in a vacuum drying oven at 190 ℃ for 5 hours, and then powder cleaning is carried out by an air gun with the diameter of 1mm, so that a SiC ceramic blank with the Briggy structure with the diameter of 30mm and the height of 30mm is obtained; the total SiC ceramic volume fraction was 13.92%.
(3) Preparing a prefabricated body with a Briggy structure: and (3) placing the SiC ceramic body with the Briggy structure in a tubular furnace filled with high-purity oxygen for pressureless sintering, wherein the oxygen purity is 99.999%, the sintering temperature is 1400 ℃, the heat preservation time is 3h, the temperature is increased at the rate of 2 ℃/min in the temperature range of 350-450 ℃, and the heating rate of the rest temperature ranges is 4 ℃/min, so that the SiC ceramic preform containing SiO 2 is obtained. In the whole sintering engineering, the strength of the preform is improved, the binder is removed, and the SiC ceramic is promoted to be partially oxidized, so that the subsequent infiltration preparation of the composite material is facilitated; the obtained SiC ceramic preform had pores of two sizes, wherein the large-size pores were pores between SiC ceramic layers (solid cylinders), the pore diameter was 500 μm, the porosity was 65.20%, and the small-size pores were pores within the SiC ceramic layers, the average pore diameter size was 3.8 μm, and the porosity was 64.3%;
(4) Preparing an aluminum liquid: placing 2024 aluminum alloy ingot in a crucible, heating to 800 ℃ in a resistance furnace, and preserving heat for 80min to melt the 2024 aluminum alloy ingot to obtain aluminum liquid;
(5) Preparing a Briggy structural SiC/Al-based composite material: placing the SiC ceramic preform obtained in the step (3) in the middle of a graphite pad, placing both in hot working die steel, heating to 560 ℃ by using a ring-shaped resistance furnace, preserving heat for 40min, pouring aluminum liquid into a die, placing the graphite pad and a pressure head on the die, and selecting high-strength graphite as the material of the graphite pad, wherein the whole graphite pad is cylindrical with the diameter of 80mm, and forming a middle through hole of the graphite pad. Pressurizing by using a hydraulic press, firstly applying pressure of 1MPa, and promoting molten aluminum to infiltrate into large-size pores in the SiC ceramic preform; then increasing the pressure to 120MPa within 2s, and promoting the aluminum liquid to infiltrate into small-size pores in the SiC ceramic preform under the action of the pressure; and (3) continuously maintaining the pressure for 6min, and completely solidifying the impregnated aluminum liquid under the action of pressure to obtain the high-performance bionic Briggy structure SiC reinforced aluminum matrix composite (the volume fraction of SiC ceramic is 12.72%, and the volume fraction of 2024 aluminum alloy is 87.28%).
FIG. 8 is a photograph of a microstructure of a cross section of the resulting SiC/Al-based composite material having a bionic Briggy structure. The whole graph is divided into two parts by a dotted line, wherein I represents the range of the aluminum alloy matrix, and II represents the SiC ceramic enriched area. From the microstructural diagrams of the transverse and longitudinal sections, it can be seen that the structure of the SiC preform in the composite remains intact, and that secondary phases (Al 2 Cu) precipitate during infiltration, which appear white in the microstructural photographs.
FIG. 9 is a cross section of a single SiC ceramic enrichment region in a prepared SiC/Al-based composite material with a bionic Briggy structure, and it can be seen that the diameter of a cylinder of the single SiC ceramic enrichment region is 400 μm, and the single SiC ceramic enrichment region is well combined with aluminum in the SiC ceramic enrichment region.
FIG. 10 is a graph showing the normal temperature compressive stress-strain curve of the resulting SiC/Al-based composite material having a bionic Briggange structure under as-cast conditions. The design parameter of the composite material is that the single-layer thickness is 400 mu m, and the equidirectional rotation angle is 30 degrees. Cylindrical compressed samples of 5mm diameter and 7.5mm height were cut from the composite material and tested for room temperature compression performance in the range of 10-35 ℃. The compression ends of the test sample are ensured to be parallel, and the compression strain rate is 3×10 -4s-1.
In the foregoing, the present invention is merely preferred embodiments, which are based on different implementations of the overall concept of the invention, and the protection scope of the invention is not limited thereto, and any changes or substitutions easily come within the technical scope of the present invention as those skilled in the art should not fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (10)
1. The efficient forming method of the high-performance bionic Briggy structural ceramic particle reinforced metal matrix composite material is characterized by comprising the following steps of:
s1: establishing a three-dimensional model of the Briggy structure, paving powder and spraying binder on ceramic particles layer by layer according to the three-dimensional model, drying after printing to obtain a ceramic body of the Briggy structure, and sintering the body to obtain a preform;
S2: and impregnating the heated and melted molten metal liquid into the preform by a hydraulic press to obtain the high-performance bionic Briggy structural ceramic particle reinforced metal matrix composite.
2. The method of claim 1 wherein the ceramic particles in S1 comprise SiC and the binder is selected from the group consisting of commercial organic binders.
3. The method according to claim 1, wherein the three-dimensional model of the brigon structure in S1 comprises a plurality of stacked elementary sheets consisting of a plurality of solid cylinders having a diameter of 300-500 μm and a rotation angle between adjacent elementary sheets of 15 ° -45 °.
4. The method according to claim 1, wherein the powder bed temperature is 40-50 ℃, the single layer powder laying thickness is 40-60 μm, and the binder saturation is 70-80% during the jet printing in S1.
5. The method according to claim 1, wherein the sintering temperature in S1 is 1350-1450 ℃, the holding time is 2-5h, the temperature is raised at a rate of 1-3 ℃/min in a temperature interval of 350-450 ℃ and the temperature raising rate of the remaining temperature interval is 3-5 ℃/min.
6. The method of claim 1, wherein the molten metal in S2 comprises aluminum or an aluminum alloy.
7. The method according to claim 1, wherein the impregnating process in S2 is: firstly, maintaining the pressure for 1-2s under the pressure of 0.5-1.5MPa, then, increasing the pressure to 100-150MPa in 1-3s, and maintaining the pressure for 5-8min.
8. Use of the method of any one of claims 1-7 in 3D printing of ceramic reinforced composites.
9. The high-performance bionic brigon structure ceramic particle reinforced metal matrix composite material prepared by the method of any one of claims 1 to 7, wherein the ceramic particle volume content is 10 to 16 percent.
10. The use of the high-performance bionic brigon structural ceramic particle reinforced metal matrix composite material of claim 9 in the fields of aerospace, military and construction.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118272691A true CN118272691A (en) | 2024-07-02 |
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