CN114985764A - Additive manufacturing method of ceramic-metal composite material - Google Patents
Additive manufacturing method of ceramic-metal composite material Download PDFInfo
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- CN114985764A CN114985764A CN202210661237.9A CN202210661237A CN114985764A CN 114985764 A CN114985764 A CN 114985764A CN 202210661237 A CN202210661237 A CN 202210661237A CN 114985764 A CN114985764 A CN 114985764A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/50—Means for feeding of material, e.g. heads
- B22F12/52—Hoppers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
- B33Y70/10—Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The invention discloses a ceramic-metal composite material additive manufacturing method, which relates to the technical field of additive manufacturing, in particular to the technical field of laser additive manufacturing, and comprises the following steps: placing ceramic powder or ceramic-metal composite powder in a powder cylinder 1, placing metal powder in a powder cylinder 2, and performing additive manufacturing printing by adopting a layered powder laying mode, namely laying a layer of ceramic or ceramic-metal composite powder firstly and then laying a layer of metal powder, or laying a layer of metal powder firstly and then laying a layer of ceramic or ceramic-metal composite powder secondly, and laying two layers of powder; and then, the powder spreading and printing actions are carried out in a circulating and reciprocating mode until the whole additive manufacturing process is finished. The additive manufacturing method provided by the invention can effectively improve the ceramic phase content in the ceramic-metal composite additive manufacturing printed product, and obtain the high-density ceramic-metal composite.
Description
Technical Field
The invention relates to the technical field of additive manufacturing, in particular to a ceramic-metal composite material additive manufacturing method.
Background
Additive manufacturing technology, i.e. 3D printing technology, is an advanced manufacturing technology that accomplishes printing by superposition of materials. The Selective Laser Melting (SLM) technology is an important component, metal powder is used as a raw material, laser melts the metal powder according to a preset scanning route, and a metal sheet layer is formed after rapid cooling and solidification, so that the forming precision is high, the SLM technology has a great development prospect, and the SLM technology is often used for manufacturing ceramic-metal composite materials.
At present, when the SLM is used to manufacture the ceramic-metal composite material, the ceramic powder and the metal alloy powder are mixed by a ball milling mixing method, and then SLM printing is performed. Generally, the volume fraction of the ceramic powder added by the method is low, and the fused melt cannot be uniformly spread easily after the ceramic powder is added, so that the ceramic particles and the metal matrix have insufficient wettability to generate a large number of pores and poor compactness; this severely limits the development of ceramic-metal composites in the SLM additive manufacturing field.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a ceramic-metal composite material additive manufacturing method, which comprises the steps of placing pure ceramic powder or ceramic-metal composite powder in a powder cylinder 1, placing metal alloy powder in a powder cylinder 2, and performing SLM printing in a layered powder paving mode. The technical scheme is as follows:
the invention provides a ceramic-metal composite material additive manufacturing method, which comprises the following specific steps:
s1, placing ceramic or ceramic-metal composite powder in a powder cylinder 1, and placing metal powder in a powder cylinder 2;
s2, spreading the powder in the powder cylinder 1 or 2 to a forming cylinder to obtain a current layer;
s3, spreading the powder in the powder cylinder 2 or 1 to a forming cylinder to obtain a current layer;
s4, printing the SLM process under the atmosphere of protective gas;
s5, repeating the steps S2-S4 until printing is finished.
Preferably, in step S1, the ceramic-metal composite powder is prepared from ceramic powder and metal powder, wherein the ceramic includes diamond, cast WC, SiC, TiC, TiB 2 、TiCN、Si 3 N 4 At least one of; the metal comprises at least one of iron-based, aluminum-based, titanium-based, nickel-based, cobalt-based, copper-based, magnesium-based, zirconium-based, tungsten-based, molybdenum-based, tantalum-based metal or alloy; the ceramic powder has a size of 0.1 to 120 μm, and the metal powder has an average particle diameter ranging from 0.1 to 120 μm.
The ceramics here include ceramics in ceramic-metal composite powder, and also include pure ceramics in the powder cylinder 1 directly used for layered printing; the metal here includes the metal in the ceramic-metal composite powder and also the metal powder in the powder cylinder 2 directly used for the layered printing.
When the powder cylinder 1 is made of pure ceramic, the size of the ceramic powder is the size of the pure ceramic powder in the powder cylinder 1 directly used for layered printing; when the ceramic-metal composite powder is in the powder cylinder 1, the size of the ceramic powder is the size of the ceramic powder used to prepare the ceramic-metal composite.
When the powder cylinder 1 is made of pure ceramics, the average particle size of the metal powder is the average particle size of the metal powder in the powder cylinder 2 directly used for layered printing; when the ceramic-metal composite powder is present in the powder tank 1, the average particle diameter of the metal powder is not only the average particle diameter of the metal powder used for preparing the ceramic-metal composite material but also the average particle diameter of the metal powder in the powder tank 2.
Further preferably, the ceramic powder has a size of 10 to 50 μm, and the metal powder has an average particle diameter in the range of 20 to 50 μm.
Preferably, the metal in the ceramic-metal composite powder in the powder cylinder 1 and the metal powder in the powder cylinder 2 are made of the same material.
Preferably, in the ceramic-metal composite material described in step S1, the ceramic powder accounts for 1-99% by volume. More preferably, in the ceramic-metal composite material described in step S1, the ceramic powder accounts for 20 to 60% by volume.
Preferably, the layer thickness of the current layer in step S2 is in the range of 10-40 μm.
Preferably, the layer thickness of the current layer in step S3 is in the range of 10-40 μm.
Preferably, the shielding gas of step S4 includes argon or nitrogen.
Preferably, the SLM process in step S4 includes laser power, scanning speed, and scanning pitch; wherein the laser spot is 20-80 μm, the laser power is 10-1000W, the scanning speed is 100-2500mm/s, and the scanning pitch is 0.01-0.08 mm.
The invention has the beneficial effects that: placing pure ceramic or ceramic-metal composite powder in a powder cylinder 1, placing metal powder in a powder cylinder 2, and performing layered powder laying by firstly laying a layer of ceramic or ceramic-metal composite powder and then laying a layer of metal powder, or laying a layer of metal powder and then laying a layer of ceramic or ceramic-metal composite powder, laying two layers of powder, then performing additive manufacturing and printing, and then performing powder laying and printing actions in a circulating and reciprocating manner until the whole additive manufacturing process is completed; compared with the ceramic-metal composite powder which is directly placed in a powder cylinder, the melt generated by the ceramic-metal composite powder has better fluidity in the SLM printing process, and the ceramic-metal composite material with high ceramic content and high density can be manufactured.
By adopting the method, the diamond-AlSi 10Mg (volume ratio is 9:1) and AlSi10Mg are printed in a layered mode, and when the volume content of the diamond ceramic is 45%, the density of the prepared ceramic-metal composite material can reach 99.2%; whereas printing failed when the diamond-AlSi 10Mg (volume ratio 9:11) mixed powder was printed using the SLM printing process.
By adopting the method, the cast WC-Co (volume ratio is 4:1) and Co are printed in a layered mode, the volume content of the cast WC ceramic is 40%, and the density of the prepared ceramic-metal composite material can reach 99.1%; when the cast WC-Co (volume ratio 4:6) mixed powder is printed by adopting the SLM printing process, printing fails.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
The metal powder provided by the invention comprises pure metal, metal matrix composite materials and alloys.
The density is measured by an Archimedes drainage method.
The ceramic-metal composite powder can be prepared by directly ball-milling and mixing ceramic powder and metal powder.
Example 1
A ceramic-metal composite material additive manufacturing method comprises the following specific steps:
s1, mixing a mixture of a raw material and a solvent according to a volume ratio of 1: 1, placing diamond-AlSi 10Mg composite powder in a powder cylinder 1, placing AlSi10Mg powder in a powder cylinder 2, wherein the diamond size is 45 mu m, and the average grain diameter of the AlSi10Mg powder is 35 mu m;
s2, flatly paving the powder in the powder cylinder 1 or 2 to a forming cylinder to obtain a current layer with the thickness of 10 microns;
s3, spreading the powder in the powder cylinder 2 or 1 to a forming cylinder to obtain a current layer with the thickness of 10 microns;
s4, performing SLM process printing under the atmosphere of protective gas, wherein a laser spot is 80 microns, the laser power is 300W, the scanning speed is 1600mm/s, and the scanning interval is 0.05 mm;
s5, repeating the steps S2-S4 until printing is completed.
By the forming method, the density of the printed sample is measured to be 98.7%, and the volume ratio of the ceramic in the printed sample is 25%.
The inert gas is argon.
Example 2
A ceramic-metal composite material additive manufacturing method comprises the following specific steps:
s1, mixing a mixture of 9:1, placing diamond-AlSi 10Mg composite powder in a powder cylinder 1, placing AlSi10Mg powder in a powder cylinder 2, wherein the diamond size is 45 mu m, and the average grain diameter of the AlSi10Mg powder is 35 mu m;
s2, flatly paving the powder in the powder cylinder 1 or 2 to a forming cylinder to obtain a current layer with the thickness of 20 microns;
s3, spreading the powder in the powder cylinder 2 or 1 to a forming cylinder to obtain a current layer with the thickness of 20 microns;
s4, performing SLM process printing under the atmosphere of protective gas, wherein laser spots are 80 microns, the laser power is 200W, the scanning speed is 600mm/s, and the scanning interval is 0.05 mm;
s5, repeating the steps S2-S4 until printing is finished.
By the forming method, the density of the printed sample is 99.2%, and the volume ratio of the ceramic in the printed sample is 45%.
The inert gas is argon.
Example 3
A ceramic-metal composite material additive manufacturing method comprises the following specific steps:
s1, mixing a mixture of a solvent and a solvent in a volume ratio of 4:1, placing the cast WC-Co composite powder in a powder cylinder 1, and placing Co powder in a powder cylinder 2, wherein the grain size of the cast WC is 42 mu m, and the average grain size of the Co powder is 20 mu m;
s2, flatly paving the powder in the powder cylinder 1 or 2 to a forming cylinder to obtain a current layer with the thickness of 20 microns;
s3, spreading the powder in the powder cylinder 2 or 1 to a forming cylinder to obtain a current layer with the thickness of 20 microns;
s4, performing SLM process printing under the atmosphere of protective gas, wherein laser spots are 60 microns, the laser power is 200W, the scanning speed is 800mm/s, and the scanning distance is 0.04 mm;
s5, repeating the steps S2-S4 until printing is finished.
By the forming method, the density of the printed sample is 99.1%, and the volume ratio of the ceramic in the printed sample is 40%.
Further, the inert gas is nitrogen.
Example 4
A ceramic-metal composite material additive manufacturing method comprises the following specific steps:
s1, placing pure SiC powder in a powder cylinder 1, and placing 316 stainless steel powder in a powder cylinder 2, wherein the SiC particle size is 20 micrometers, and the average particle size of the 316 stainless steel powder is 41 micrometers;
s2, spreading the powder in the powder cylinder 1 or 2 to a forming cylinder to obtain a current layer with the thickness of 20 microns;
s3, spreading the powder in the powder cylinder 2 or 1 to a forming cylinder to obtain a current layer with the thickness of 20 microns;
s4, SLM process printing is carried out in the atmosphere of protective gas, the laser spot is 40 microns, the laser power is 260W, the scanning speed is 2100mm/s, and the scanning distance is 0.05 mm;
s5, repeating the steps S2-S4 until printing is finished.
By the forming method, the density of the printed sample is 98.7%, and the volume ratio of the ceramic in the printed sample is 50%.
The inert gas is argon.
Example 5
A ceramic-metal composite material additive manufacturing method comprises the following specific steps:
s1, placing pure TiC powder in a powder cylinder 1, and placing Ni powder in a powder cylinder 2, wherein the TiC particle size is 30 micrometers, and the average particle size of the Ni powder is 32 micrometers;
s2, spreading the powder in the powder cylinder 1 or 2 to a forming cylinder to obtain a current layer with the thickness of 30 microns;
s3, spreading the powder in the powder cylinder 2 or 1 to a forming cylinder to obtain a current layer with the thickness of 30 microns;
s4, SLM process printing is carried out in the atmosphere of protective gas, the laser spot is 70 micrometers, the laser power is 250W, the scanning speed is 1100mm/s, and the scanning interval is 0.05 mm;
s5, repeating the steps S2-S4 until printing is finished.
By the forming method, the density of the printed sample is measured to be 98.9%, and the volume ratio of the ceramic in the printed sample is 50%.
Further, the inert gas is nitrogen.
Example 6
A ceramic-metal composite material additive manufacturing method comprises the following specific steps:
s1, adjusting the volume ratio to be 9:1 TiB 2 placing-Cu-Sn composite powder in a powder cylinder 1, placing Cu-Sn powder in a powder cylinder 2, wherein TiB 2 The particle size is 35 mu m, and the average particle size of Cu-Sn powder is 45 mu m;
s2, spreading the powder in the powder cylinder 1 or 2 to a forming cylinder to obtain a current layer with the thickness of 20 microns;
s3, spreading the powder in the powder cylinder 2 or 1 to a forming cylinder to obtain a current layer with the thickness of 20 microns;
s4, performing SLM process printing under the atmosphere of protective gas, wherein laser spots are 60 microns, the laser power is 230W, the scanning speed is 900mm/s, and the scanning interval is 0.05 mm;
s5, repeating the steps S2-S4 until printing is finished.
By the forming method, the density of the printed sample is measured to be 98.5%, and the volume ratio of the ceramic in the printed sample is 45%.
Further, the inert gas is nitrogen.
Example 7
A ceramic-metal composite material additive manufacturing method comprises the following specific steps:
s1, placing pure TiCN powder in a powder cylinder 1, and placing AlSi7Mg powder in a powder cylinder 2, wherein the TiCN size is 32 mu m, and the average grain size of the AlSi7Mg powder is 35 mu m;
s2, spreading the powder in the powder cylinder 1 or 2 to a forming cylinder to obtain a current layer with the thickness of 20 microns;
s3, spreading the powder in the powder cylinder 2 or 1 to a forming cylinder to obtain a current layer with the thickness of 20 microns;
s4, performing SLM process printing under the atmosphere of protective gas, wherein laser spots are 50 microns, the laser power is 360W, the scanning speed is 1500mm/s, and the scanning distance is 0.05 mm;
s5, repeating the steps S2-S4 until printing is finished.
By the forming method, the density of the printed sample is measured to be 98.6%, and the volume ratio of the ceramic in the printed sample is 50%.
Further, the inert gas is nitrogen.
Example 8
A ceramic-metal composite material additive manufacturing method comprises the following specific steps:
s1, mixing a mixture of 9:1 Si 3 N 4 -the composite powder of AlSi7Mg is placed in powder jar 1, the powder of AlSi7Mg is placed in powder jar 2, wherein Si 3 N 4 The size is 30 μm, and the average grain diameter of AlSi7Mg powder is 45 μm;
s2, flatly paving the powder in the powder cylinder 1 or 2 to a forming cylinder to obtain a current layer with the thickness of 30 microns;
s3, spreading the powder in the powder cylinder 2 or 1 to a forming cylinder to obtain a current layer with the thickness of 30 microns;
s4, performing SLM process printing under the atmosphere of protective gas, wherein laser spots are 60 micrometers, the laser power is 355W, the scanning speed is 1600mm/s, and the scanning distance is 0.05 mm;
s5, repeating the steps S2-S4 until printing is finished.
By the forming method, the density of the printed sample is 98.6%, and the volume ratio of the ceramic in the printed sample is 45%.
Further, the inert gas is argon.
Example 9
A ceramic-metal composite material additive manufacturing method comprises the following specific steps:
s1, mixing a mixture of a solvent and a solvent in a volume ratio of 5: 5: 1, placing diamond-casting WC-TC4 composite powder in a powder cylinder 1, placing TC4 powder in a powder cylinder 2, wherein the diamond size is 10 mu m, the casting WC size is 40 mu m, and the average grain size of the TC4 powder is 50 mu m;
s2, spreading the powder in the powder cylinder 1 or 2 to a forming cylinder to obtain a current layer with the thickness of 20 microns;
s3, spreading the powder in the powder cylinder 2 or 1 to a forming cylinder to obtain a current layer with the thickness of 20 microns;
s4, performing SLM process printing under the atmosphere of protective gas, wherein laser spots are 80 microns, the laser power is 310W, the scanning speed is 1700mm/s, and the scanning interval is 0.06 mm;
s5, repeating the steps S2-S4 until printing is finished.
By the forming method, the density of the printed sample is measured to be 98.4%, and the volume ratio of the ceramic in the printed sample is 45.45%.
Further, the inert gas is argon.
Comparative example 1
A ceramic-metal composite material additive manufacturing method comprises the following specific steps:
s1, placing diamond-AlSi 10Mg composite powder with a volume ratio of 9:11 into a powder cylinder, wherein the diamond size is 45 microns, and the average grain size of AlSi10Mg powder is 35 microns;
s2, spreading the powder in the powder cylinder to a forming cylinder to obtain a current layer with the thickness of 40 microns;
s3, performing SLM process printing under the protection of argon, wherein laser spots are 80 microns, the laser power is 200W, the scanning speed is 600mm/s, and the scanning interval is 0.05 mm; .
The molding failure was found, and the printing failed.
Comparative example 2
A ceramic-metal composite material additive manufacturing method comprises the following specific steps:
s1, mixing a mixture of a volume ratio of 4:6, placing the cast WC-Co composite powder into a powder cylinder, wherein the size of the cast WC is 42 mu m, and the average grain diameter of the Co powder is 20 mu m;
s2, spreading the powder in the powder cylinder to a forming cylinder to obtain a current layer with the thickness of 40 microns;
s3, performing SLM process printing under the protection of nitrogen, wherein laser spots are 60 microns, the laser power is 200W, the scanning speed is 800mm/s, and the scanning interval is 0.04 mm;
the molding failure was found, and the printing failed.
Comparative example 3
A ceramic-metal composite material additive manufacturing method comprises the following specific steps:
s1, mixing a mixture of 3: 7, placing the TiC-Ni composite powder in a powder cylinder, wherein the size of TiC is 30 mu m, and the average grain diameter of Ni powder is 34 mu m;
s2, spreading the powder in the powder cylinder to a forming cylinder to obtain a current layer with the thickness of 30 microns;
s3, performing SLM process printing under the protection of nitrogen, wherein laser spots are 50 microns, the laser power is 320W, the scanning speed is 1400mm/s, and the scanning interval is 0.05 mm;
the molding failure was found, and the printing failed.
Comparative example 4
A ceramic-metal composite material additive manufacturing method comprises the following specific steps:
s1, mixing a mixture of 3: TiB of 7 2 Placing the-Cu-Sn composite powder in a powder cylinder, wherein the TiB 2 The size is 35 μm, and the average grain diameter of Cu-Sn powder is 45 μm;
s2, spreading the powder in the powder cylinder to a forming cylinder to obtain a current layer with the thickness of 30 microns;
s3, performing SLM process printing under the protection of nitrogen, wherein laser spots are 60 microns, the laser power is 230W, the scanning speed is 900mm/s, and the scanning interval is 0.05 mm;
the molding failure was found, and the printing failed.
Comparative example 5
A ceramic-metal composite material additive manufacturing method comprises the following specific steps:
s1, mixing a mixture of a water-soluble monomer and a water-soluble monomer in a volume ratio of 2: 3, placing TiCN-AlSi7Mg composite powder into a powder cylinder, wherein the TiCN size is 32 mu m, and the average grain diameter of AlSi7Mg powder is 35 mu m;
s2, flatly paving the powder in the powder cylinder 1 to a forming cylinder to obtain a current layer with the layer thickness of 40 micrometers;
s3, SLM process printing is carried out under the protection of nitrogen, the laser spot is 50 microns, the laser power is 360W, the scanning speed is 1500mm/s, and the scanning interval is 0.05 mm;
the molding failure was found, and the printing failed.
Table 1 examples prepared sample performance parameters and comparative parameters
As can be seen from the table, the SLM printing method for distributing and layering powder is widely applicable to printing of ceramic-metal composite materials and has good density; and the mixed powder of the prior art fails to print.
Particularly, the diamond-AlSi 10Mg (9:1) and AlSi10Mg are printed in a layered mode, and when the volume content of the diamond ceramic is 45%, the density of the prepared ceramic-metal composite material can reach 99.2%; whereas printing failed when the diamond-AlSi 10Mg (9:11) blended powder was printed using the SLM printing process.
By adopting the method, the cast WC-Co (4:1) and Co are printed in a layered manner, the volume content of the cast WC ceramic is 40%, and the density of the prepared ceramic-metal composite material can reach 99.1%; when the cast WC-Co (4:6) mixed powder is printed by adopting the SLM printing process, printing fails.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art. It should be noted that the technical features not described in detail in the present invention can be implemented by any prior art in the field.
Claims (10)
1. A method of additive manufacturing of a ceramic-metal composite, the method comprising the steps of:
s1, placing ceramic or ceramic-metal composite powder in a powder cylinder 1, and placing metal powder in a powder cylinder 2;
s2, spreading the powder in the powder cylinder 1 to a forming cylinder to obtain a current layer;
s3, spreading the powder in the powder cylinder 2 to a forming cylinder to obtain a current layer;
s4, printing the SLM process under the atmosphere of protective gas;
s5, repeating the steps S2-S4 until printing is completed.
2. A method of additive manufacturing of a ceramic-metal composite, the method comprising the steps of:
s1, placing ceramic or ceramic-metal composite powder in a powder cylinder 1, and placing metal powder in a powder cylinder 2;
s2, spreading the powder in the powder cylinder 2 to a forming cylinder to obtain a current layer;
s3, flatly paving the powder in the powder cylinder 1 to a forming cylinder to obtain a current layer;
s4, printing the SLM process under the atmosphere of protective gas;
s5, repeating the steps S2-S4 until printing is finished.
3. The additive manufacturing method of ceramic-metal composite material according to any one of claims 1 or 2, wherein in step S1, the ceramic-metal composite powder is prepared from ceramic powder and metal powder, and the ceramic comprises diamond, cast WC, SiC, TiC, TiB 2 、TiCN、Si 3 N 4 At least one of iron-based, aluminum-based, titanium-based, nickel-based, cobalt-based, copper-based, magnesium-based, zirconium-based, tungsten-based, molybdenum-based, tantalum-based, or alloys; the ceramic powder has a size of 0.1 to 120 μm, and the metal powder has an average particle diameter ranging from 0.1 to 120 μm.
4. The additive manufacturing method of ceramic-metal composite material according to claim 3, wherein the metal in the ceramic-metal composite powder in the powder cylinder 1 and the metal powder in the powder cylinder 2 are made of the same material.
5. The additive manufacturing method for ceramic-metal composites according to any one of claims 1 or 2, wherein the ceramic accounts for 1-99% of the volume of the ceramic-metal composite in step S1.
6. The additive manufacturing method for ceramic-metal composites as claimed in claim 5, wherein the ceramic accounts for 20-60% of the volume of the ceramic-metal composite in step S1.
7. The additive manufacturing method of ceramic-metal composite material according to any one of claims 1 or 2, wherein the layer thickness of the current layer in step S2 is in the range of 10-40 μm.
8. The additive manufacturing method of ceramic-metal composite material according to any one of claims 1 or 2, wherein the layer thickness of the current layer in step S3 is in the range of 10-40 μm.
9. The ceramic-metal composite additive manufacturing method according to any one of claims 1 or 2, wherein the shielding gas of step S4 comprises argon or nitrogen.
10. The ceramic-metal composite additive manufacturing method according to any one of claims 1 or 2, wherein the SLM process of step S4 comprises: 20-80 μm of laser spot, 10-1000W of laser power, 100-3500mm/s of scanning speed and 0.01-0.08mm of scanning interval.
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| CN114716260A (en) * | 2022-03-14 | 2022-07-08 | 广东省科学院新材料研究所 | Connecting piece of ceramic-metal composite material and metal material and preparation method thereof |
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| CN114716260B (en) * | 2022-03-14 | 2023-03-07 | 广东省科学院新材料研究所 | Connecting piece of ceramic-metal composite material and metal material and preparation method thereof |
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