CN111074164B - Fe-based explosion-proof high-heat-dissipation material and preparation method thereof - Google Patents

Fe-based explosion-proof high-heat-dissipation material and preparation method thereof Download PDF

Info

Publication number
CN111074164B
CN111074164B CN201911338968.4A CN201911338968A CN111074164B CN 111074164 B CN111074164 B CN 111074164B CN 201911338968 A CN201911338968 A CN 201911338968A CN 111074164 B CN111074164 B CN 111074164B
Authority
CN
China
Prior art keywords
powder
preparation
heat
proof
parts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201911338968.4A
Other languages
Chinese (zh)
Other versions
CN111074164A (en
Inventor
陈万鑫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seaparks Tianjin Machinery Electronics Co ltd
Original Assignee
Seaparks Tianjin Machinery Electronics Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seaparks Tianjin Machinery Electronics Co ltd filed Critical Seaparks Tianjin Machinery Electronics Co ltd
Priority to CN201911338968.4A priority Critical patent/CN111074164B/en
Publication of CN111074164A publication Critical patent/CN111074164A/en
Application granted granted Critical
Publication of CN111074164B publication Critical patent/CN111074164B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • B22F3/11—Making porous workpieces or articles
    • B22F3/1121—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers
    • B22F3/1125—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers involving a foaming process
    • 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
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
    • B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper

Abstract

The invention belongs to the field of composite materials, and relates to a Fe-based explosion-proof high-heat-dissipation material and a preparation method thereof. The Fe-based explosion-proof and high-heat-dissipation material provided by the embodiment of the invention comprises the following components in parts by weight: 58 parts of Fe, 8 parts of Ni, 22 parts of Cu, 12 parts of Mg, 6.4-12 parts of Al, 1.6-3 parts of Nd and TiH21.2-2.5 parts by weight; the diameter of a nano hole in the Fe-based explosion-proof and high-heat-dissipation material is 35nm-180nm, and the total volume of the nano hole accounts for 88% -95% of the volume of the matrix; the density of the Fe-based explosion-proof and high-heat-dissipation material is 0.528g/cm3The steel has a compressive strength of 920MPa or more, a tensile strength of 855MPa or more, and a hardness of 677HV or more; the Fe-based explosion-proof and high-heat-dissipation material has the thermal conductivity of 1302W/(m.k) or more and the thermal expansion coefficient of 1.88 multiplied by 10 at 580 DEG C‑6The energy absorption per unit weight is 225MJ/kg or more and less than K. The Fe-based explosion-proof and high-heat-dissipation material is prepared by the processes of matrix solution preparation, powder forming catalytic solution preparation, precursor powder preparation, alloy powder preparation, metal matrix material preparation and the like, and the material disclosed by the embodiment of the invention has excellent explosion-proof and heat-dissipation performance and mechanical performance.

Description

Fe-based explosion-proof high-heat-dissipation material and preparation method thereof
Technical Field
The invention belongs to the field of composite materials, and relates to a Fe-based explosion-proof high-heat-dissipation material and a preparation method thereof.
Background
The roller is an important component of the belt conveyor and is widely applied to various fields such as industrial production, rail transit and the like. The service life and performance of the drum are the basis for the transfer to be achieved. Especially in complex application environments such as industrial production, such as steel smelting, petrochemical industry and the like, the roller is required to have excellent comprehensive service performance and service life during transmission.
In the prior art, Q235 is used as a base material, and a layer of chromium is electroplated on the surface of the roller to obtain better surface quality. The defects are as follows: 1) the chromium electroplating process has great harm to the environment; 2) in the using process, the chromium layer on the surface is easy to fall off due to friction, and the Q235 base material does not have corrosion resistance; 3) the traditional iron metal material has high density, and the energy consumption of the roller is high during operation; 4) the traditional ferrous metal material has lower heat conductivity coefficient and impact resistance. Therefore, how to improve the explosion-proof, heat dissipation performance and mechanical performance of the roller material, reduce the density, improve the heat transfer and impact resistance performance, prolong the service life of the roller material in complex application occasions, reduce the energy consumption of the roller material during operation and improve the environmental protection performance of the process has important significance.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a Fe-based explosion-proof high-heat-dissipation material and a preparation method thereof.
According to one aspect of the invention, the Fe-based explosion-proof high heat dissipation material comprises the following components in parts by weight: 58 parts of Fe, 8 parts of Ni, 22 parts of Cu, 12 parts of Mg, 6.4-12 parts of Al, 1.6-3 parts of Nd and TiH21.2-2.5 parts by weight; the diameter of a nano hole in the Fe-based explosion-proof and high-heat-dissipation material is 35nm-180nm, and the total volume of the nano hole accounts for 88% -95% of the volume of the matrix; the density of the Fe-based explosion-proof and high-heat-dissipation material is 0.528g/cm3The steel has a compressive strength of 920MPa or more, a tensile strength of 855MPa or more, and a hardness of 677HV or more; the Fe-based explosion-proof and high-heat-dissipation material has the thermal conductivity of 1302W/(m.k) or more and the thermal expansion coefficient of 1.88 multiplied by 10 at 580 DEG C-6The energy absorption per unit weight is 225MJ/kg or more and less than K.
According to another aspect of the invention, a preparation method of the Fe-based explosion-proof high-heat-dissipation material is provided, which comprises the following steps:
first, preparing base solution
According to the mass ratio of Fe, Ni, Cu and Mg elements of 58:8:22:12, weighing corresponding chlorides of all elements, respectively dissolving the chlorides in deionized water to form FeCl2·4H2O、NiCl2·6H2O、CuCl2·2H2O and MgCl2·6H2O hydrate, fully mixing the hydrate to prepare a matrix solution with the concentration of 0.12-0.35 mol/L;
preparation of powder-forming catalytic solution
Preparing an oxalic acid solution with the concentration of 0.5mol/L, thereby forming a powder forming catalysis solution;
preparation of precursor powder
Respectively adding the matrix solution and the powdered catalytic solution into a reaction kettle at the same speed through a liquid adding kettle to perform a secondary precipitation reaction; fully stirring, adding an ammonia water solution to adjust the pH value of the reaction solution to 4-5, and standing for 60min to obtain a precursor powder precipitate;
repeatedly filtering and cleaning the precursor powder precipitate by using deionized water, and drying at 125 ℃ under a vacuum condition;
performing secondary reduction treatment on the dried precursor powder to obtain reduced precursor powder, wherein the average particle size of the reduced precursor powder is 5-25 μm;
preparation of alloy powder
Fully mixing the prepared precursor powder, aluminum/neodymium element mixed powder and titanium hydride powder with the average particle size of 45 mu m according to the weight ratio of 100 (8-15) to (1.2-2.5), and performing ball milling treatment to obtain alloy powder;
preparation of metal matrix material
And (2) carrying out cold press molding on the alloy powder, preparing a base material through vacuum hot extrusion, and placing the base material in a preheated steel mold for foaming treatment to obtain the Fe-based anti-explosion and high-heat-dissipation nano-pore metal base material.
According to an exemplary embodiment of the present invention, in the secondary precipitation reaction, the first precipitation reaction temperature is 60 ℃, and the reaction time is 45 min; the second precipitation reaction temperature is 90 ℃ and the reaction time is 35 min.
According to the exemplary embodiment of the invention, in the secondary reduction treatment, a deoxidation reduction furnace is adopted for carrying out first reduction treatment, the reduction temperature is 550 ℃, and the reduction time is 3.5 h; by NH3Decomposing the gas for a second reduction treatment, NH3The flow rate of the decomposed gas is 5m3The reduction temperature is 380 ℃ and the reduction time is 60 min.
According to an exemplary embodiment of the present invention, the aluminum/neodymium element mixed powder is prepared by mechanically mixing pure aluminum powder having an average particle size of 50 μm and a purity of 99.99% and pure neodymium powder having an average particle size of 20 μm and a purity of 99.99% for a mixing time of 2 to 5 hours; wherein the ratio of the pure aluminum powder to the pure neodymium powder is 4:1 in parts by weight.
According to the exemplary embodiment of the invention, during ball milling treatment, the rotation speed of a mill is 150r/min, the ball mass ratio is 20:1, argon protection is adopted, and the ball milling time is 1h-2.5 h.
According to the exemplary embodiment of the invention, when cold-press molding is carried out, the cold-press molding pressure is 280MPa, and the cold-press molding time is 30 min.
According to an exemplary embodiment of the present invention, the vacuum hot extrusion temperature is 520 ℃ to 580 ℃ and the vacuum degree is 1 × 10-3Pa-3×10-5Pa。
According to the exemplary embodiment of the invention, the foaming temperature is 660-700 ℃ and the foaming time is 30-50 min during the foaming treatment.
Compared with the prior art, according to the preparation method of the Fe-based explosion-proof and high-heat-dissipation material, the Fe-based explosion-proof and high-heat-dissipation material is prepared by the processes of matrix solution preparation, powder forming catalytic solution preparation, precursor powder preparation, alloy powder preparation, metal matrix material preparation and the like. According to the Fe-based explosion-proof high-heat-dissipation material, the diameter of the nano-pore is 35nm-180nm, and the total volume of the pore accounts for 88% -95% of the volume of the matrix; the density of the Fe-based explosion-proof and high-heat-dissipation material is 0.528g/cm3The compression strength is more than 920Mpa, and the hardness is more than 677 HV; the Fe-based explosion-proof and high-heat-dissipation material has the thermal conductivity of 1302W/(m.k) or more and the thermal expansion coefficient of 1.88 multiplied by 10 at 580 DEG C-6below/K, the energy absorption per unit weight is above 225 MJ/kg; has excellent explosion-proof, heat dispersion and mechanical properties.
Detailed Description
In order to make the technical solution and advantages of the present invention more apparent, the present invention is further described in detail by the following specific examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1:
first, preparing base solution
According to Fe, Ni, Cu and Mg elementsThe mass ratio of the elements is 58:8:22:12, the corresponding chlorides of all the elements are weighed and respectively dissolved in deionized water to form FeCl2·4H2O、NiCl2·6H2O、CuCl2·2H2O and MgCl2·6H2And O hydrate, and fully mixing the hydrate to prepare a matrix solution with the concentration of 0.12 mol/L.
Preparation of powder-forming catalytic solution
An oxalic acid solution with a concentration of 0.5mol/L is prepared, thereby forming a powder forming catalytic solution.
Preparation of precursor powder
Respectively adding the matrix solution and the powdered catalytic solution into a reaction kettle at the same speed through a liquid adding kettle to perform a secondary precipitation reaction; and (3) fully stirring, adding an ammonia water solution to adjust the pH value of the reaction solution to 4, and standing for 60min to obtain a precursor powder precipitate.
In the second-stage precipitation reaction, the temperature of the first precipitation reaction is 60 ℃, and the reaction time is 45 min; the second precipitation reaction temperature is 90 ℃ and the reaction time is 35 min.
And repeatedly filtering and cleaning the precursor powder precipitate by using deionized water, and drying at 125 ℃ under a vacuum condition.
And carrying out secondary reduction treatment on the dried powder to obtain reduced precursor powder, wherein the average particle size of the reduced precursor powder is 25 mu m.
In the secondary reduction treatment, a deoxidation reduction furnace is adopted for carrying out primary reduction treatment, the reduction temperature is 550 ℃, and the reduction time is 3.5 h; by NH3Performing secondary reduction treatment on the decomposed gas with flow rate of 5m3The reduction temperature is 380 ℃ and the reduction time is 60 min.
Preparation of alloy powder
Fully mixing the prepared precursor powder, aluminum/neodymium element mixed powder and titanium hydride powder with the average particle size of 45 mu m according to the weight ratio of 100:8:2.5, performing ball milling treatment at the rotating speed of a mill of 150r/min for ball material mass ratio of 20:1, and performing argon protection for 1h to obtain alloy powder.
Wherein, the aluminum/neodymium element mixed powder is prepared by mechanically mixing pure aluminum powder with the average particle size of 50 mu m and the purity of 99.99 percent and pure neodymium powder with the average particle size of 20 mu m and the purity of 99.99 percent, and the mixing time is 5 hours; wherein the ratio of the pure aluminum powder to the pure neodymium powder is 4:1 in parts by weight.
Preparation of metal matrix material
And (3) cold-pressing and molding the alloy powder, wherein the cold-pressing and molding pressure is 280MPa, and the cold-pressing and molding time is 30 min.
And preparing the matrix material by vacuum hot extrusion at 520 ℃ under a vacuum degree of 1 × 10- 3Pa-3×10-5Pa。
And (3) placing the base material in a preheated steel die for foaming treatment, wherein the foaming temperature is 660 ℃, and the foaming time is 30min, so as to obtain the Fe-based explosion-proof high-heat-dissipation metal base material.
Example 2:
first, preparing base solution
According to the mass ratio of Fe, Ni, Cu and Mg elements of 58:8:22:12, weighing corresponding chlorides of all elements, respectively dissolving the chlorides in deionized water to form FeCl2·4H2O、NiCl2·6H2O、CuCl2·2H2O and MgCl2·6H2And O hydrate, and fully mixing the hydrate to prepare a matrix solution with the concentration of 0.15 mol/L.
Preparation of powder-forming catalytic solution
An oxalic acid solution with a concentration of 0.5mol/L is prepared, thereby forming a powder forming catalytic solution.
Preparation of precursor powder
Respectively adding the matrix solution and the powdered catalytic solution into a reaction kettle at the same speed through a liquid adding kettle to perform a secondary precipitation reaction; and (3) fully stirring, adding an ammonia water solution to adjust the pH value of the reaction solution to 5, and standing for 60min to obtain a precursor powder precipitate.
In the second-stage precipitation reaction, the temperature of the first precipitation reaction is 60 ℃, and the reaction time is 45 min; the second precipitation reaction temperature is 90 ℃ and the reaction time is 35 min.
Repeatedly filtering and cleaning the precursor powder precipitate by using deionized water, and drying at 125 ℃ under a vacuum condition;
and carrying out secondary reduction treatment on the dried powder to obtain reduced precursor powder, wherein the average particle size of the reduced precursor powder is 15 mu m.
In the secondary reduction treatment, a deoxidation reduction furnace is adopted for carrying out primary reduction treatment, the reduction temperature is 550 ℃, and the reduction time is 3.5 h; by NH3Performing secondary reduction treatment on the decomposed gas with flow rate of 5m3The reduction temperature is 380 ℃ and the reduction time is 60 min.
Preparation of alloy powder
Fully mixing the prepared precursor powder, aluminum/neodymium element mixed powder and titanium hydride powder with the average particle size of 45 mu m according to the weight ratio of 100:10:2, performing ball milling treatment at the rotating speed of a mill of 150r/min, wherein the ball material mass ratio is 20:1, and performing argon protection for 2.5h to obtain alloy powder.
Wherein, the aluminum/neodymium element mixed powder is prepared by mechanically mixing pure aluminum powder with the average particle size of 50 mu m and the purity of 99.99 percent and pure neodymium powder with the average particle size of 20 mu m and the purity of 99.99 percent, and the mixing time is 2 hours; wherein the ratio of the pure aluminum powder to the pure neodymium powder is 4:1 in parts by weight.
Preparation of metal matrix material
And (3) cold-pressing and molding the alloy powder, wherein the cold-pressing and molding pressure is 280MPa, and the cold-pressing and molding time is 30 min.
And preparing the matrix material by vacuum hot extrusion at 550 ℃ under a vacuum degree of 1 × 10- 3Pa-3×10-5Pa；
And (3) placing the base material in a preheated steel die for foaming treatment, wherein the foaming temperature is 680 ℃, and the foaming time is 50min, so as to obtain the Fe-based explosion-proof high-heat-dissipation metal base material.
Example 3:
first, preparing base solution
According to the mass ratio of Fe, Ni, Cu and Mg elements of 58:8:22:12, weighing corresponding chlorides of all elements, respectively dissolving the chlorides in deionized water to form FeCl2·4H2O、NiCl2·6H2O、CuCl2·2H2O and MgCl2·6H2And O hydrate, and fully mixing the hydrate to prepare a matrix solution with the concentration of 0.28 mol/L.
Preparation of powder-forming catalytic solution
Preparing oxalic acid solution with the concentration of 0.5mol/L to form powder catalytic solution.
Preparation of precursor powder
Respectively adding the matrix solution and the powdered catalytic solution into a reaction kettle at the same speed through a liquid adding kettle to perform a secondary precipitation reaction; and (3) fully stirring, adding an ammonia water solution to adjust the pH value of the reaction solution to 5, and standing for 60min to obtain a precursor powder precipitate.
In the second-stage precipitation reaction, the temperature of the first precipitation reaction is 60 ℃, and the reaction time is 45 min; the second precipitation reaction temperature is 90 ℃ and the reaction time is 35 min.
And repeatedly filtering and cleaning the precursor powder precipitate by using deionized water, and drying at 125 ℃ under a vacuum condition.
And carrying out secondary reduction treatment on the dried powder to obtain reduced precursor powder, wherein the average particle size of the reduced precursor powder is 15 microns.
In the secondary reduction treatment, a deoxidation reduction furnace is adopted for carrying out primary reduction treatment, the reduction temperature is 550 ℃, and the reduction time is 3.5 h; by NH3Performing secondary reduction treatment on the decomposed gas with flow rate of 5m3The reduction temperature is 380 ℃ and the reduction time is 60 min.
Preparation of alloy powder
Fully mixing the prepared precursor powder, aluminum/neodymium element mixed powder and titanium hydride powder with the average particle size of 45 mu m according to the weight ratio of 100:12:1.5, performing ball milling treatment at the rotating speed of a mill of 150r/min for ball material mass ratio of 20:1, and performing argon protection for ball milling for 2.5 hours to obtain alloy powder;
wherein, the aluminum/neodymium element mixed powder is prepared by mechanically mixing pure aluminum powder with the average particle size of 50 mu m and the purity of 99.99 percent and pure neodymium powder with the average particle size of 20 mu m and the purity of 99.99 percent, and the mixing time is 2.5 h; wherein the ratio of the pure aluminum powder to the pure neodymium powder is 4:1 in parts by weight.
Preparation of metal matrix material
And (3) cold-pressing and molding the alloy powder, wherein the cold-pressing and molding pressure is 280MPa, and the cold-pressing and molding time is 30 min.
And preparing the matrix material by vacuum hot extrusion at 580 deg.C under 1 × 10- 3Pa-3×10-5Pa。
And (3) placing the base material in a preheated steel die for foaming treatment, wherein the foaming temperature is 700 ℃, and the foaming time is 35min, so as to obtain the Fe-based explosion-proof high-heat-dissipation metal base material.
Example 4:
first, preparing base solution
According to the mass ratio of Fe, Ni, Cu and Mg elements of 58:8:22:12, weighing corresponding chlorides of all elements, respectively dissolving the chlorides in deionized water to form FeCl2·4H2O、NiCl2·6H2O、CuCl2·2H2O and MgCl2·6H2And O hydrate, and fully mixing the hydrate to prepare a matrix solution with the concentration of 0.35 mol/L.
Preparation of powder-forming catalytic solution
Preparing oxalic acid solution with the concentration of 0.5mol/L to form powder catalytic solution.
Preparation of precursor powder
Respectively adding the matrix solution and the powdered catalytic solution into a reaction kettle at the same speed through a liquid adding kettle to perform a secondary precipitation reaction; and (3) fully stirring, adding an ammonia water solution to adjust the pH value of the reaction solution to 5, and standing for 60min to obtain a precursor powder precipitate.
In the second-stage precipitation reaction, the temperature of the first precipitation reaction is 60 ℃, and the reaction time is 45 min; the second precipitation reaction temperature is 90 ℃ and the reaction time is 35 min.
And repeatedly filtering and cleaning the precursor powder precipitate by using deionized water, and drying at 125 ℃ under a vacuum condition.
And carrying out secondary reduction treatment on the dried powder to obtain reduced precursor powder, wherein the average particle size of the reduced precursor powder is 5 microns.
In the secondary reduction treatment, a deoxidation reduction furnace is adopted for carrying out primary reduction treatment, the reduction temperature is 550 ℃, and the reduction time is 3.5 h; by NH3Performing secondary reduction treatment on the decomposed gas with flow rate of 5m3The reduction temperature is 380 ℃ and the reduction time is 60 min.
Preparation of alloy powder
Fully mixing the prepared precursor powder, aluminum/neodymium element mixed powder and titanium hydride powder with the average particle size of 45 mu m according to the weight ratio of 100:15:1.2, performing ball milling treatment at the rotating speed of a mill of 150r/min for ball material mass ratio of 20:1, and performing argon protection for ball milling for 2.5 hours to obtain alloy powder;
the aluminum/neodymium element mixed powder is prepared by mechanically mixing pure aluminum powder with the average particle size of 50 mu m and the purity of 99.99 percent and pure neodymium powder with the average particle size of 20 mu m and the purity of 99.99 percent, and the mixing time is 5 hours; wherein the ratio of the pure aluminum powder to the pure neodymium powder is 4:1 in parts by weight.
Preparation of metal matrix material
And (3) cold-pressing and molding the alloy powder, wherein the cold-pressing and molding pressure is 280MPa, and the cold-pressing and molding time is 30 min.
And preparing the matrix material by vacuum hot extrusion at 580 deg.C under 1 × 10- 3Pa-3×10-5Pa。
And (3) placing the base material in a preheated steel die for foaming treatment, wherein the foaming temperature is 700 ℃, and the foaming time is 50min, so as to obtain the Fe-based explosion-proof high-heat-dissipation metal base material.
Example 5:
based on the subject matter of the application, the Fe-based explosion-proof and high heat dissipation metal matrix material prepared by the method of example 1, example 2, example 3 and example 4 has the composition ratio shown in table 1, and the diameter of the nano-pores in the matrix, the percentage of the total volume of the nano-pores in the matrix and the total density of the material are shown in table 2.
TABLE 1
Figure BDA0002331732670000081
TABLE 2
Examples Diameter of nanopore Volume percentage of pores in the matrix Density of
Example 1 180nm 88％ 0.528g/cm3
Example 2 35nm 95％ 0.395g/cm3
Example 3 130nm 89％ 0.502g/cm3
Example 4 85nm 92％ 0.433g/cm3
Using the Fe-based explosion-proof, high heat-dissipating base materials prepared in example 1, example 2, example 3, and example 4, a drum was manufactured by machine molding. The same specification roller was manufactured using a conventional Q235-based Cr-plated material as a comparative example.
The compression strength of the rollers manufactured by the examples of the application and the rollers manufactured by the comparative materials were measured at room temperature according to GB/T7314-2017 "method for testing compression of metallic materials at room temperature", and 10 samples were taken for each of the examples and the comparative examples and averaged, see Table 3.
The microhardness of the surfaces of the cylinders produced in the examples of the present application and the comparative material was measured at room temperature using an HX-1000 microhardness tester at a load of 50g, and 20 points were randomly selected and averaged, as shown in Table 3.
TABLE 3
Test specimen Compressive strength Average hardness
Example 1 920MPa 677HV
Example 2 955MPa 692HV
Example 3 939MPa 685HV
Example 4 937MPa 682HV
Comparative example 1 320MPa 135HV
As can be seen from table 3, the compression strength and surface hardness of the drums prepared using the Fe-based explosion-proof, high heat dissipating materials prepared in examples 1, 2, 3 and 4 were significantly improved compared to the comparative example, the compression strength was 2.93 times that of the comparative example, and the average hardness was about 5.06 times that of the comparative example.
According to GB/T3651-2008 metal high-temperature thermal conductivity measurement method, the thermal conductivity of the roller made of the Fe-based explosion-proof and high-heat-dissipation material prepared in the examples 1, 2, 3 and 4 and the roller made of the comparative example material are measured at 580 ℃, and the thermal conductivity is shown in Table 4.
According to GB/T4339-.
The energy absorption per unit weight was measured at 580 ℃ according to GB/T229-2007 Charpy impact test method for metallic materials, for drums made of Fe-based explosion-proof, high heat dissipating materials prepared in examples 1, 2, 3 and 4 and drums made of comparative example materials, and the measured values are shown in Table 4.
TABLE 4
Test specimen Thermal conductivity Coefficient of thermal expansion Energy absorption per unit weight
Example 1 1321W/(m·k) 1.88×10-6/K 228MJ/kg
Example 2 1302W/(m·k) 1.29×10-6/K 225MJ/kg
Example 3 1398W/(m·k) 1.39×10-6/K 252MJ/kg
Example 4 1361W/(m·k) 1.64×10-6/K 239MJ/kg
Comparative example 49W/(m·k) 12×10-6/K 55MJ/kg
As can be seen from table 4, the drums manufactured using the Fe-based explosion-proof, high heat dissipation materials manufactured in examples 1, 2, 3, and 4 have significantly improved thermal conductivity and energy absorption per unit weight, and greatly reduced thermal expansion coefficient, which is 27.46 times higher than that of the comparative example, 4.29 times higher than that of the comparative example, and 12.9% higher than that of the comparative example.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (7)

1. A preparation method of a Fe-based explosion-proof and high-heat-dissipation material is characterized by comprising the following steps:
according to the mass ratio of Fe, Ni, Cu and Mg elements of 58:8:22:12, weighing corresponding chlorides of all elements, respectively dissolving the chlorides in deionized water to form FeCl2·4H2O、NiCl2·6H2O、CuCl2·2H2O and MgCl2·6H2O hydrate, fully mixing the hydrate to prepare a matrix solution with the concentration of 0.12-0.35 mol/L;
preparing oxalic acid solution with the concentration of 0.5mol/L to form powder catalytic solution;
respectively adding the matrix solution and the powdered catalytic solution into a reaction kettle at the same speed through a liquid adding kettle to perform a secondary precipitation reaction; fully stirring, adding an ammonia water solution to adjust the pH value of the reaction solution to 4-5, and standing for 60min to obtain a precursor powder precipitate;
repeatedly filtering and cleaning the precursor powder precipitate by using deionized water, and drying at 125 ℃ under a vacuum condition;
carrying out secondary reduction treatment on the dried precursor powder to obtain reduced precursor powder with the average particle size of 5-25 mu m;
fully mixing the prepared precursor powder, aluminum/neodymium element mixed powder and titanium hydride powder with the average particle size of 45 mu m according to the weight ratio of 100 (8-15) to (1.2-2.5), and performing ball milling treatment to obtain alloy powder;
cold press molding the alloy powder and preparing a base material by vacuum hot extrusion, placing the base material in a preheated steel mold for foaming treatment to obtain a nano-pore metal base material;
wherein the aluminum/neodymium element mixed powder is prepared by mechanically mixing pure aluminum powder with the average particle size of 50 mu m and the purity of 99.99 percent and pure neodymium powder with the average particle size of 20 mu m and the purity of 99.99 percent, and the mixing time is 2-5 h; wherein the ratio of the pure aluminum powder to the pure neodymium powder is 4:1 in parts by weight.
2. The preparation method according to claim 1, wherein in the secondary precipitation reaction, the first precipitation reaction temperature is 60 ℃ and the reaction time is 45 min; the second precipitation reaction temperature is 90 ℃ and the reaction time is 35 min.
3. The preparation method according to claim 1, wherein in the secondary reduction treatment, a first reduction treatment is performed by using a deoxidation reduction furnace, wherein the reduction temperature is 550 ℃, and the reduction time is 3.5 hours; by NH3Decomposing the gas for a second reduction treatment, NH3The flow rate of the decomposed gas is 5m3The reduction temperature is 380 ℃ and the reduction time is 60 min.
4. The preparation method of claim 1, wherein during the ball milling treatment, the rotation speed of a mill is 150r/min, the mass ratio of balls to materials is 20:1, argon gas is adopted for protection, and the ball milling time is 1-2.5 h.
5. The preparation method of claim 1, wherein the cold press molding pressure is 280MPa, and the cold press molding time is 30 min.
6. The production method according to claim 1, wherein, in the vacuum hot extrusion,the temperature of vacuum hot extrusion is 520-580 ℃, and the vacuum degree is 1 multiplied by 10-3Pa-3×10-5Pa。
7. The method as claimed in claim 1, wherein the foaming temperature is 660-700 ℃ and the foaming time is 30-50 min.
CN201911338968.4A 2019-12-23 2019-12-23 Fe-based explosion-proof high-heat-dissipation material and preparation method thereof Active CN111074164B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911338968.4A CN111074164B (en) 2019-12-23 2019-12-23 Fe-based explosion-proof high-heat-dissipation material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911338968.4A CN111074164B (en) 2019-12-23 2019-12-23 Fe-based explosion-proof high-heat-dissipation material and preparation method thereof

Publications (2)

Publication Number Publication Date
CN111074164A CN111074164A (en) 2020-04-28
CN111074164B true CN111074164B (en) 2020-11-13

Family

ID=70316898

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911338968.4A Active CN111074164B (en) 2019-12-23 2019-12-23 Fe-based explosion-proof high-heat-dissipation material and preparation method thereof

Country Status (1)

Country Link
CN (1) CN111074164B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06340943A (en) * 1993-06-01 1994-12-13 Daido Steel Co Ltd Oxidation resistant alloy powder for filter
EP1065020A1 (en) * 1999-06-29 2001-01-03 Sumitomo Electric Industries, Ltd. Metal porous bodies, method for preparation thereof and metallic composite materials using the same
CN102409237A (en) * 2010-08-10 2012-04-11 阿兰图姆公司 Open-porous metal foam body and a method of fabricating the same
CN102796911A (en) * 2012-08-10 2012-11-28 黑龙江科技学院 Porous foam Fe-Ni metal explosion suppression material and application thereof
CN103266259A (en) * 2013-05-30 2013-08-28 昆明理工大学 Vacuum foaming preparation method of blister steel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06340943A (en) * 1993-06-01 1994-12-13 Daido Steel Co Ltd Oxidation resistant alloy powder for filter
EP1065020A1 (en) * 1999-06-29 2001-01-03 Sumitomo Electric Industries, Ltd. Metal porous bodies, method for preparation thereof and metallic composite materials using the same
CN102409237A (en) * 2010-08-10 2012-04-11 阿兰图姆公司 Open-porous metal foam body and a method of fabricating the same
CN102796911A (en) * 2012-08-10 2012-11-28 黑龙江科技学院 Porous foam Fe-Ni metal explosion suppression material and application thereof
CN103266259A (en) * 2013-05-30 2013-08-28 昆明理工大学 Vacuum foaming preparation method of blister steel

Also Published As

Publication number Publication date
CN111074164A (en) 2020-04-28

Similar Documents

Publication Publication Date Title
CN105695788B (en) A kind of graphene enhancing nickel-base composite material and preparation method thereof
CN110273092B (en) CoCrNi particle reinforced magnesium-based composite material and preparation method thereof
CN108251695B (en) Preparation method of titanium-aluminum-niobium-zirconium-molybdenum alloy
CN106967905A (en) A kind of preparation method of low bulk high temperature aluminium alloys layered electronic encapsulating material
CN110828099A (en) Neodymium-iron-boron magnet surface composite corrosion-resistant coating and preparation method thereof
CN109865833B (en) Powder metallurgy preparation method of titanium or titanium alloy product, and titanium or titanium alloy product
CN111074164B (en) Fe-based explosion-proof high-heat-dissipation material and preparation method thereof
CN110229989B (en) Multi-element hard alloy and preparation method thereof
CN109554564B (en) Preparation method of amorphous alloy particle and carbon nano tube reinforced aluminum matrix composite material
CN111020579A (en) Preparation of TiB on titanium alloy2Method for particle reinforced high-entropy alloy coating
AU2017400313B2 (en) Nickel-coated hexagonal boron nitride composite powder, preparation and application thereof as well as self-lubricating ceramic cutter
CN111778431B (en) High-toughness single-walled carbon nanotube aluminum alloy-based composite material and preparation method thereof
CN108914041B (en) High-temperature-resistant and hydrochloric acid corrosion-resistant composite material for synthesis furnace and preparation method thereof
CN106086548A (en) Comprise magnesium and copper can heat-treatable aluminum alloy and preparation method thereof
CN108838388B (en) Powder metallurgy austenitic stainless steel and preparation method thereof
CN111471930A (en) High-strength corrosion-resistant machining process for steel pipe
CN108941529A (en) A kind of high-precision environmental protection and energy saving powder compacting gear
JPS634622B2 (en)
CN117862496A (en) Method for improving interface combination and mechanical property of GNPs/Mg composite material
CN110205520B (en) Ceramic reinforced titanium alloy material for brake disc of high-speed heavy-load train
CN117737496B (en) Heat-resistant aluminum alloy and preparation method thereof
US20200010939A1 (en) Iron-based multi-phase environmentally-friendly hydrogen storage material
CN107130148A (en) A kind of Novel aluminum alloy material and its manufacture craft
CN102329547B (en) Preparation method of coating composition
CN116770158B (en) Preparation method of iron-based composite material for automobile gear

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant