CN116586615A - Preparation method of ternary composite porous metal film - Google Patents
Preparation method of ternary composite porous metal film Download PDFInfo
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- CN116586615A CN116586615A CN202310632746.3A CN202310632746A CN116586615A CN 116586615 A CN116586615 A CN 116586615A CN 202310632746 A CN202310632746 A CN 202310632746A CN 116586615 A CN116586615 A CN 116586615A
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- 239000002184 metal Substances 0.000 title claims abstract description 70
- 239000011206 ternary composite Substances 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 54
- 238000005245 sintering Methods 0.000 claims abstract description 26
- 239000000835 fiber Substances 0.000 claims abstract description 25
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 24
- 239000010935 stainless steel Substances 0.000 claims abstract description 24
- 238000000875 high-speed ball milling Methods 0.000 claims abstract description 5
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 20
- 239000011229 interlayer Substances 0.000 claims description 18
- 238000000498 ball milling Methods 0.000 claims description 10
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 claims description 8
- 238000010288 cold spraying Methods 0.000 claims description 6
- 229910044991 metal oxide Inorganic materials 0.000 claims description 6
- 150000004706 metal oxides Chemical group 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000001914 filtration Methods 0.000 description 9
- 239000002923 metal particle Substances 0.000 description 6
- 230000004907 flux Effects 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910020068 MgAl Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/002—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of porous nature
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/18—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by using pressure rollers
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The application relates to the technical field of metal films, in particular to a preparation method of a ternary composite porous metal film, which comprises the following steps of S1, performing high-speed ball milling on stainless steel powder and metal fiber wires according to a certain proportion to obtain prealloyed powder; s2, adding powder on one side of a supporting net, and enabling the supporting net with the powder added on one side to pass through a roller of a rolling mill so that the powder is uniformly attached to the supporting net to obtain a green body; and step S3, sintering the green body to obtain the metal film.
Description
Technical Field
The application relates to the technical field of metal films, in particular to a preparation method of a ternary composite porous metal film.
Background
The porous metal film material is widely applied to the industrial fields of environmental protection, petrochemical industry, coal chemical industry and the like, and can be divided into a composite silk screen material, a powder net composite material, a metal fiber material and the like according to the types of the material.
At present, the three metal films have the advantages and disadvantages of the self, such as high filtering flux of composite silk screen materials and metal fibers, low filtering precision, easy blocking, complex preparation process and the like, the powder mesh composite material has high filtering precision, low porosity, small filtering flux which is basically 1/2 of that of a metal fiber felt, and powder is easy to fall off in the use process. Therefore, there is an urgent need to develop a novel porous material metal membrane with a large filtration flux and high filtration accuracy.
Disclosure of Invention
The application aims to provide a preparation method of a ternary composite porous metal film, which solves the problem that the existing metal film preparation technology is difficult to prepare a metal film with large filtration flux and high filtration precision.
In order to solve the technical problems, the application adopts the following technical scheme:
a preparation method of a ternary composite porous metal film comprises the following steps,
step S1, carrying out high-speed ball milling on stainless steel powder and metal fiber wires according to a certain proportion to obtain prealloyed powder;
s2, adding powder on one side of a supporting net, and enabling the supporting net with the powder added on one side to pass through a roller of a rolling mill so that the powder is uniformly attached to the supporting net to obtain a green body;
and step S3, sintering the green body to obtain the metal film.
In a further technical solution, in the step S2, the powder is added to a single side of the support net by means of cold spraying.
In a further technical solution, in the step S2, the powder is added to a single side of the support net by uniformly pouring the powder before the support net enters the roller.
According to a further technical scheme, in the step S1, metal fiber wires account for 0.5-20% of the total mass of powder, stainless steel powder and the metal fiber wires are subjected to ball milling through a planetary ball mill, stainless steel balls are mixed in the ball mill, the stainless steel balls account for 20-50% of the mass of the balls in the ball mill, the diameter of the stainless steel balls is 10-40mm, and the ball milling time is 2-4H.
In a further technical scheme, the diameter of the metal fiber is 1-20 mu m, and the length of the metal fiber is 50-200 mu m.
The further technical scheme is that the thickness of the supporting net is 0.2-1mm, the width of the supporting net is 400-1000mm, the length of the supporting net is 1000-3000mm, and the supporting net is a metal woven net, a steel plate net or a punching net.
The further technical scheme is that the sintering process in the step S3 comprises the following steps of, step N1, putting green bodies into a continuous atmosphere sintering furnace for sintering, and adding an inert interlayer between two adjacent green bodies; step N2, introducing argon into the continuous atmosphere sintering furnace, and exhausting air in the furnace; then raising the temperature of the furnace from room temperature to 200-250 ℃, and preserving heat for 60-120min for removing water in the green body; step N3, raising the temperature from 250 ℃ to 1150-1250 ℃ and preserving heat for 120-240min; and N4, taking the metal film out of the continuous atmosphere sintering furnace, and then taking the inert interlayer out.
In a further technical scheme, the inert interlayer is a metal oxide interlayer.
The further technical proposal is that the temperature rising rate of the step N2 is not more than 10 ℃/min; the temperature rising rate of the step N3 is not more than 10 ℃/min.
Compared with the prior art, the application has the beneficial effects that: the porosity and the filtration flux are adjusted by adjusting the proportion of the metal powder to the metal fiber to reconstruct the pore arrangement state of the membrane; 2. the metal powder and the metal fiber wires are mixed in a ball milling mode, so that the metal powder and the metal fiber wires can be mixed in the ball milling mode to obtain prealloyed powder while the metal powder and the metal fiber wires are further ground to fineness; 3. the characteristic that the metal fiber wires are large in specific surface and easy to fuse at high temperature sintering is utilized, so that the porosity is improved, meanwhile, the film and the combination of the film and a matrix are improved, and the problem that powder is easy to fall off is solved. And the addition of the organic binder reduces environmental pollution, and meanwhile, the product has no organic residues, so that the corrosiveness and toughness of the product are greatly improved.
Detailed Description
The present application 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 application 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 application.
Example 1:
in order to solve the technical problems, the application adopts the following technical scheme:
a preparation method of a ternary composite porous metal film comprises the following steps,
step S1, carrying out high-speed ball milling on stainless steel powder and metal fiber wires according to a certain proportion to obtain prealloyed powder;
s2, adding powder on one side of a supporting net, and enabling the supporting net with the powder added on one side to pass through a roller of a rolling mill so that the powder is uniformly attached to the supporting net to obtain a green body;
and step S3, sintering the green body to obtain the metal film.
In said step S2, powder is added to the single side of the support mesh by means of cold spraying. Cold spraying is a surface spraying process in which the metal particles are not melted throughout the process, and the compressed air is used to accelerate the metal particles to a critical velocity (supersonic velocity) where the metal particles impact against the substrate surface and adhere firmly.
In step S2, the powder is added to the single side of the support net by means of uniform pouring before the support net enters the roll. The green body is obtained by controlling the supporting mesh and the powder flow rate, the speed is generally: 1-3m/min.
In the step S1, metal fiber wires account for 0.5-20% of the total mass of the powder, stainless steel powder and the metal fiber wires are subjected to ball milling through a planetary ball mill, stainless steel balls are mixed in the ball mill, the stainless steel balls account for 20-50% of the mass of the balls in the ball mill, the diameter of the stainless steel balls is 10-40mm, and the ball milling time is 2-4H.
The diameter of the metal fiber wire is 1-20 mu m, and the length is 50-200 mu m.
The thickness of the supporting net is 0.2-1mm, the width is 400-1000mm, the length is 1000-3000mm, and the supporting net is a metal woven net, a steel plate net or a punching net.
The sintering process in the step S3 comprises the following steps of, step N1, loading the green bodies into a continuous atmosphere sintering furnace for sintering, and adding an inert interlayer between two adjacent green bodies; step N2, introducing argon into the continuous atmosphere sintering furnace, and exhausting air in the furnace; then raising the temperature of the furnace from room temperature to 200-250 ℃, and preserving heat for 60-120min for removing moisture in the green body, so as to avoid the phenomena of film cracking and hollowness caused by rapid volatilization of the moisture; step N3, raising the temperature from 250 ℃ to 1150-1250 ℃ and preserving heat for 120-240min; and N4, taking the metal film out of the continuous atmosphere sintering furnace, and then taking the inert interlayer out.
The inert interlayer is a metal oxide interlayer. The metal oxide interlayer is MgO or MgAl 2 O 4 . The temperature rising rate of the step N2 is not more than 10 ℃/min; the temperature rising rate of the step N3 is not more than 10 ℃/min.
Example 2:
a preparation method of a ternary composite porous metal film comprises the following steps,
step S1, carrying out high-speed ball milling on stainless steel powder and metal fiber wires according to a certain proportion to obtain prealloyed powder;
s2, adding powder on one side of a supporting net, and enabling the supporting net with the powder added on one side to pass through a roller of a rolling mill so that the powder is uniformly attached to the supporting net to obtain a green body;
and step S3, sintering the green body to obtain the metal film.
In said step S2, powder is added to the single side of the support mesh by means of cold spraying. Cold spraying is a surface spraying process in which the metal particles are not melted throughout the process, and the compressed air is used to accelerate the metal particles to a critical velocity (supersonic velocity) where the metal particles impact against the substrate surface and adhere firmly.
In step S2, the powder is added to the single side of the support net by means of uniform pouring before the support net enters the roll. The green body is obtained by controlling the supporting mesh and the powder flow rate, the speed is generally: 2m/min.
In the step S1, the metal fiber wires account for 2 percent of the total mass of the powder, the stainless steel powder and the metal fiber wires are subjected to ball milling through a planetary ball mill, stainless steel balls are mixed in the ball mill, the stainless steel balls account for 40 percent of the mass of the grinding balls in the ball mill, the diameter of the stainless steel balls is 20mm, and the ball milling time is 3H.
The diameter of the metal fiber wire is 6 μm, and the length is 100 μm.
The thickness of the supporting net is 0.4mm, the width of the supporting net is 518mm, the length of the supporting net is 1000mm, and the supporting net is a metal woven net, a steel plate net or a punching net.
The sintering process in the step S3 comprises the following steps of, step N1, loading the green bodies into a continuous atmosphere sintering furnace for sintering, and adding an inert interlayer between two adjacent green bodies; step N2, introducing argon into the continuous atmosphere sintering furnace, and exhausting air in the furnace; then the temperature of the furnace is raised to 220 ℃ from room temperature, and the temperature is kept for 80 minutes, so that the moisture in the green body is removed, and the phenomena of film cracking and hollowness caused by the rapid volatilization of the moisture are avoided; step N3, raising the temperature from 250 ℃ to 1150-1250 ℃ and preserving heat for 180min; and N4, taking the metal film out of the continuous atmosphere sintering furnace, and then taking the inert interlayer out.
The inert interlayer is a metal oxide interlayer. The metal oxide interlayer is MgO. The temperature rising rate of the step N2 is not more than 10 ℃/min; the temperature rising rate of the step N3 is not more than 10 ℃/min.
Example 3:
comparison test: the porous stainless steel metal film can be prepared by powder rolling-spraying or slip casting. The comparative experiment was performed on the purchased stainless steel metal film and the porous metal film prepared by the method of the present application, and the experimental data are shown in table 1.
TABLE 1 comparative experiment table of the inventive metallic film and the conventional stainless steel metallic film
Although the application has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope and spirit of the principles of this disclosure. More specifically, various variations and modifications may be made to the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure and claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will be apparent to those skilled in the art.
Claims (9)
1. A preparation method of a ternary composite porous metal film is characterized by comprising the following steps,
step S1, carrying out high-speed ball milling on stainless steel powder and metal fiber wires according to a certain proportion to obtain prealloyed powder;
s2, adding powder on one side of a supporting net, and enabling the supporting net with the powder added on one side to pass through a roller of a rolling mill so that the powder is uniformly attached to the supporting net to obtain a green body;
and step S3, sintering the green body to obtain the metal film.
2. The method for preparing the ternary composite porous metal film according to claim 1, which is characterized in that: in said step S2, powder is added to the single side of the support mesh by means of cold spraying.
3. The method for preparing the ternary composite porous metal film according to claim 1, which is characterized in that: in step S2, the powder is added to the single side of the support net by means of uniform pouring before the support net enters the roll.
4. The method for preparing the ternary composite porous metal film according to claim 1, which is characterized in that: in the step S1, metal fiber wires account for 0.5-20% of the total mass of the powder, stainless steel powder and the metal fiber wires are subjected to ball milling through a planetary ball mill, stainless steel balls are mixed in the ball mill, the stainless steel balls account for 20-50% of the mass of the balls in the ball mill, the diameter of the stainless steel balls is 10-40mm, and the ball milling time is 2-4H.
5. The method for preparing the ternary composite porous metal film according to claim 1, which is characterized in that: the diameter of the metal fiber wire is 1-20 mu m, and the length is 50-200 mu m.
6. The method for preparing the ternary composite porous metal film according to claim 1, which is characterized in that: the thickness of the supporting net is 0.2-1mm, the width is 400-1000mm, the length is 1000-3000mm, and the supporting net is a metal woven net, a steel plate net or a punching net.
7. The method for preparing the ternary composite porous metal film according to claim 1, which is characterized in that: the sintering process in step S3 comprises the steps of,
step N1, placing the green bodies into a continuous atmosphere sintering furnace for sintering, and adding an inert interlayer between two adjacent green bodies;
step N2, introducing argon into the continuous atmosphere sintering furnace, and exhausting air in the furnace; then raising the temperature of the furnace from room temperature to 200-250 ℃, and preserving heat for 60-120min for removing water in the green body;
step N3, raising the temperature from 250 ℃ to 1150-1250 ℃ and preserving heat for 120-240min;
and N4, taking the metal film out of the continuous atmosphere sintering furnace, and then taking the inert interlayer out.
8. The method for preparing the ternary composite porous metal film according to claim 7, wherein the method comprises the following steps: the inert interlayer is a metal oxide interlayer.
9. The method for preparing the ternary composite porous metal film according to claim 7, wherein the method comprises the following steps: the temperature rising rate of the step N2 is not more than 10 ℃/min;
the temperature rising rate of the step N3 is not more than 10 ℃/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310632746.3A CN116586615A (en) | 2023-05-31 | 2023-05-31 | Preparation method of ternary composite porous metal film |
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| CN202310632746.3A CN116586615A (en) | 2023-05-31 | 2023-05-31 | Preparation method of ternary composite porous metal film |
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