CN118147573A - Super-hard ceramic diffusion layer on surface of metal vanadium, preparation method of super-hard ceramic diffusion layer and metal vanadium material - Google Patents
Super-hard ceramic diffusion layer on surface of metal vanadium, preparation method of super-hard ceramic diffusion layer and metal vanadium material Download PDFInfo
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- 239000000919 ceramic Substances 0.000 title claims abstract description 37
- 238000009792 diffusion process Methods 0.000 title claims abstract description 28
- 239000000463 material Substances 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 230000007797 corrosion Effects 0.000 claims abstract description 28
- 238000005260 corrosion Methods 0.000 claims abstract description 28
- 239000012298 atmosphere Substances 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 24
- 239000011159 matrix material Substances 0.000 claims abstract description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 13
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 12
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
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- 238000005457 optimization Methods 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims abstract 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 26
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 26
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 25
- 230000008595 infiltration Effects 0.000 claims description 16
- 238000001764 infiltration Methods 0.000 claims description 16
- 238000005498 polishing Methods 0.000 claims description 14
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 13
- 229910052786 argon Inorganic materials 0.000 claims description 13
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims description 13
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 244000137852 Petrea volubilis Species 0.000 claims description 4
- 238000005255 carburizing Methods 0.000 claims description 3
- 239000012459 cleaning agent Substances 0.000 claims description 2
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- 238000004321 preservation Methods 0.000 abstract 1
- INZDTEICWPZYJM-UHFFFAOYSA-N 1-(chloromethyl)-4-[4-(chloromethyl)phenyl]benzene Chemical compound C1=CC(CCl)=CC=C1C1=CC=C(CCl)C=C1 INZDTEICWPZYJM-UHFFFAOYSA-N 0.000 description 14
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- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 10
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
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- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 238000005551 mechanical alloying Methods 0.000 description 1
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- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- 239000010936 titanium Substances 0.000 description 1
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- 230000007704 transition Effects 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/20—Carburising
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
The invention discloses a superhard ceramic diffusion layer on the surface of metal vanadium, a preparation method and a metal vanadium material, wherein a vacuum pulse carburization method is utilized to put a metal vanadium matrix into vacuum equipment, and then the metal vanadium matrix is subjected to heat preservation in a carbon source atmosphere and an inert atmosphere at 800-1400 ℃, so that the carbide diffusion layer of a wear-resistant and corrosion-resistant superhard ceramic phase can be obtained on the surface of the metal vanadium; the carburized layer has excellent comprehensive performance, the surface hardness of the carburized layer can reach HV 1350-HV 3500, the bonding strength between the carburized layer and the substrate is high, and the bonding force is in the range of 20-35N; in addition, the seepage layer also has excellent corrosion resistance, and the corrosion rate in high-temperature molten metal cerium is in the range of 0.0785-0.0930 mu m/h; the vanadium metal material prepared by the method can be widely applied to the fields of steel optimization, chemical catalysis, novel batteries, aerospace engine parts, nuclear industry and the like.
Description
Technical Field
The invention belongs to the surface treatment technology of metal materials, and particularly relates to a metal vanadium surface superhard ceramic infiltration layer, a preparation method thereof, a metal vanadium material with the metal vanadium surface superhard ceramic infiltration layer and application thereof.
Background
Vanadium is a refractory metal with a silver gray luster and a melting point of 1890 ℃ and a boiling point of 3380 ℃. Pure vanadium has better plasticity and forming energy at normal temperature, lower ductile-brittle transition temperature than other refractory metals, and better creep resistance at high temperature. The method is widely applied to the fields of steel optimization, chemical catalysis, novel batteries, aerospace engine parts, nuclear industry and the like. However, the surface hardness of the metal vanadium is low, the wear resistance is poor, and the high-temperature oxidation resistance is poor, so that the service performance of the metal vanadium in high-temperature service is influenced, and the service range of the metal vanadium is limited.
Vanadium Carbide (VC) is one of the most important functional materials in transition metal carbides, and has a series of excellent properties such as high strength, high hardness, high temperature resistance, acid and alkali resistance, wear resistance, small specific gravity, good stability, good electrical and thermal conductivity, etc., and another important use of vanadium carbide is as an important hard alloy additive or as a coating to increase the surface hardness of an alloy. In order to improve the strength and hardness of hard alloy and iron-based metal ceramic at home and abroad, vanadium carbide is often added into the hard alloy and titanium-based metal ceramic as a particle strengthening phase. Vanadium carbide is also widely used in the fields of machining, metallurgical mineral products, aerospace, microelectronics, catalysis and the like.
The method for preparing the vanadium carbide composite coating comprises the following steps: a vapor phase reduction method, a carbothermic reduction method, a mechanical alloying method, and the like. However, the hardness of the vanadium carbide composite coating prepared by the method is not high, and the combination of the vanadium carbide composite coating prepared by the method and a matrix is not tight enough, so that the service performance and the service life of the material are affected to a certain extent.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a metal vanadium surface superhard ceramic infiltration layer, a preparation method and a metal vanadium material, which specifically comprise the following contents:
in a first aspect of the invention, a superhard ceramic diffusion layer on the surface of vanadium metal is provided, wherein the superhard ceramic diffusion layer is mainly VC phase; the surface hardness of the superhard ceramic permeation layer is HV 1350-HV 3500, and the thickness of the superhard ceramic permeation layer is 10-100 μm. The surface hardness can reach HV1350, HV2000, HV2500, HV3000, HV3500, etc.; the thickness may be 10 μm, 20 μm, 50 μm, 80 μm, 90 μm, 100 μm, etc. It should be noted that the vanadium metal of the present invention is preferably pure vanadium metal.
Preferably, the ultra-hard ceramic diffusion layer has a corrosion rate in high temperature molten metal cerium of from 0.0785 to 0.0930 μm/h (e.g. 0.0785 μm/h, 0.0810 μm/h, 0.0850 μm/h, 0.0900 μm/h, 0.0930 μm/h, etc.). The method for determining the corrosion rate of the metal vanadium in the high-temperature molten metal cerium after carburization comprises the following steps: according to the weight loss mass m of the sample, the surface area s of the sample, the density rho of the seepage layer substance and the corrosion time t, and by utilizing a formula eta=m/s/rho/t, the corrosion rate of the carburized vanadium metal sample is calculated to be in the range of 0.0785-0.0930 mu m/h.
The second aspect of the invention provides a preparation method of the superhard ceramic diffusion layer on the surface of the vanadium metal, which comprises the following steps:
(1) Pretreatment of a matrix: polishing the surface of the metal vanadium matrix, and then ultrasonically cleaning;
(2) Carbon source atmosphere configuration: adjusting the carbon source atmosphere and the inert atmosphere proportion according to different ventilation time;
(3) Carburizing: placing the metal vanadium substrate treated in the step (1) into vacuum equipment, determining that the carbon source atmosphere in the step (2) is configured at 800-1400 ℃ (for example, 800 ℃, 850 ℃, 1200 ℃, 1400 ℃ and the like) and preserving heat for 1-10h (for example, 4h, 5h, 6h, 7h and the like) and the atmosphere pressure is 200-2000Pa (for example, 400Pa, 800Pa, 1500Pa, 2000Pa and the like) to obtain treated metal vanadium;
(4) Post-treatment: and (3) taking out the metal vanadium treated in the step (3), and cleaning the surface.
Preferably, the polishing method in the step (1) is 200-2000 meshes, sand paper polishing or polishing with polishing materials, and the cleaning agent used for ultrasonic cleaning is acetone or alcohol. By adopting the matrix pretreatment method disclosed by the invention, the surface of the metal vanadium matrix can be smoother and cleaner, and the binding force between the seepage layer and the matrix can be improved.
Preferably, the method of the carbon source atmosphere configuration in the step (2) is controlled by a vacuum system pulse program. The adoption of the pulse method is beneficial to improving the reaction efficiency of the vacuum infiltration step and also beneficial to improving the hardness and uniformity of the infiltration layer.
Preferably, the step (2) is to place the metal vanadium substrate into a vacuum apparatus, and determine a carbon source atmosphere configuration, where the carbon source atmosphere configuration may be selected from one or more of the following four combinations:
First kind: (5-10 min acetylene) + (60-500 min nitrogen) (e.g., 5min acetylene+450 min nitrogen, 8min acetylene+300 min nitrogen, 10min acetylene+500 min nitrogen, etc.);
Second kind: (5-10 min acetylene) + (60-500 min argon) (e.g., 5min acetylene+400 min argon, 6min acetylene+300 min argon, 9min acetylene+350 min argon, etc.);
third kind: (5-10 min methane) + (60-500 min argon) (e.g., 7min methane+450 min argon, 6min methane+300 min argon, 10min methane+350 min argon, etc.);
Fourth kind: (5-10 min methane) + (60-500 min nitrogen) (e.g., 5min methane+500 min nitrogen, 6min methane+400 min nitrogen, 8min methane+430 min nitrogen, etc.).
Preferably, the method for cleaning the surface in the step (4) is as follows: and sequentially placing the metal vanadium into clear water and alcohol for ultrasonic cleaning.
According to a third aspect of the invention, there is provided a metal vanadium material with a metal vanadium surface superhard ceramic infiltration layer according to the first aspect of the invention or with a metal vanadium surface superhard ceramic infiltration layer obtained by a preparation method according to the second aspect of the invention. The vanadium metal material can be widely applied to the fields of steel optimization, chemical catalysis, novel batteries, aerospace engine parts, nuclear industry and the like.
The invention has the beneficial effects that:
(1) The carbide diffusion layer of the superhard ceramic phase disclosed by the invention comprises VC phase, the hardness of the carbide diffusion layer and the binding force with a matrix are effectively improved through reasonable design of the components of the diffusion layer, the surface hardness is HV 1350-HV 3500, the binding strength between the diffusion layer and the matrix is 20-35N, and further the wear resistance and corrosion resistance of the vanadium metal surface are improved, and the corrosion rate of the carbide diffusion layer of the superhard ceramic phase in high-temperature molten metal cerium is 0.0785-0.0930 mu m/h.
(2) The equipment for high-temperature treatment in the step (3) of the preparation method of the superhard ceramic diffusion layer on the surface of the metal vanadium is a vacuum heat treatment furnace, and the conditions of the heat treatment are as follows by setting carbon source atmosphere configuration: the temperature is kept for 1-10h at 800-1400 ℃, the atmosphere pressure is 200-2000Pa, a superhard ceramic layer can be formed on the surface of the vanadium metal, the preparation method is very convenient for mass production, the product quality is easy to control, the required equipment is simple, and the investment is low.
(3) The invention obtains the metal vanadium material with the wear-resistant and corrosion-resistant carbide diffusion layer of the super-hard ceramic phase by utilizing the vacuum pulse carburization method, the surface hardness of the metal vanadium material can reach HV 1350-HV 3500, the thickness of the diffusion layer can be adjusted within the range of 10-100 mu m, the bonding strength between the diffusion layer and the matrix is high, and the bonding force is within the range of 20-35N. In addition, the metal vanadium material has excellent corrosion resistance, the corrosion rate in high-temperature molten metal cerium is in the range of 0.0785-0.0930 mu m/h, and the corrosion resistance requirement in a severe environment can be met.
Drawings
FIG. 1 is a photograph of the surface morphology of vanadium metal after carburization of acetylene and nitrogen gas for 450min according to the proportion of 5min in example 1;
FIG. 2 is a photograph of the cross-sectional morphology of vanadium metal after carburization according to the proportion in example 1;
FIG. 3 is a photograph of the cross-sectional morphology of the vanadium metal after 9min acetylene and 350min argon carburization in accordance with the proportion of example 2;
FIG. 4 is a photograph of the cross-sectional morphology of vanadium metal after carburization of 6min methane and 300min argon according to the proportion in example 3;
FIG. 5 is a photograph of the cross-sectional morphology of vanadium metal after 6min methane and 400min nitrogen carburization in accordance with the proportion of example 4.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description. The embodiments shown below do not limit the inventive content described in the claims in any way. The whole contents of the constitution shown in the following examples are not limited to the solution of the invention described in the claims.
In the following examples, the vanadium metal samples were industrially pure products, the reagents and gases were industrially pure products, and the other articles and test equipment were commonly known articles and test equipment.
Example 1
Degreasing the surface of a metal vanadium sample, polishing the surface of the metal vanadium sample from low to high by using sand paper (No. 200, no. 400, no. 600, no. 800, no. 1000, no. 1500 and No. 2000) with different meshes, destroying the surface oxide layer, and finally placing the sample into acetone and alcohol for ultrasonic cleaning for 10 minutes, and then sealing and preserving. Setting a ten-step pulse process of 5min acetylene and 450min nitrogen by using a vacuum furnace control system, suspending the metal vanadium in a vacuum furnace, vacuumizing the furnace to be less than 0.1Pa, preserving heat at 1600 ℃ for 460min, and controlling the atmosphere pressure in the furnace to be 600Pa. And then cooling to room temperature along with a furnace, taking out, and sequentially putting the infiltrated metal vanadium sample into clear water and alcohol for ultrasonic cleaning, thereby obtaining the wear-resistant corrosion-resistant infiltration layer with ultrahigh hardness on the surface of the metal vanadium. The surface of the sample is a VC phase compound layer. The binding force between the infiltration layer and the matrix is 30.2N, and the corrosion rate in high-temperature molten metal cerium is 0.0850 mu m/h. The surface hardness of the permeation layer is HV2154, the surface morphology of the permeation layer is shown in figure 1, and the thickness of the permeation layer is shown in figure 2 and is about 33 mu m.
Example 2
Degreasing the surface of a metal vanadium sample, polishing the metal sample by using an industrial scouring pad to destroy the surface oxide layer, and finally placing the sample into acetone and alcohol for ultrasonic cleaning for 10 minutes, and then sealing and preserving. Fifteen-step pulse process of 9min acetylene and 350min argon is set by utilizing a vacuum furnace control system, then metal vanadium is suspended in a vacuum furnace, the furnace is vacuumized to be below 0.1Pa, the temperature is kept for 360min at 1500 ℃, and the atmosphere pressure in the furnace is controlled to be 400Pa. And then cooling to room temperature along with a furnace, taking out, and sequentially putting the infiltrated metal vanadium sample into clear water and alcohol for ultrasonic cleaning, thereby obtaining the wear-resistant corrosion-resistant infiltration layer with ultrahigh hardness on the surface of the metal vanadium. The surface of the sample is a VC phase compound layer. The binding force between the infiltration layer and the matrix is 27.1N, and the corrosion rate in high-temperature molten metal cerium is 0.0790 mu m/h. The surface hardness of the infiltrated layer was HV2599, and the infiltrated layer thickness was about 54. Mu.m, as shown in FIG. 3.
Example 3
Degreasing the surface of a metal vanadium sample, polishing the surface of the metal vanadium sample from low to high by using sand paper (No. 200, no. 400, no. 600, no. 800, no. 1000, no. 1500 and No. 2000) with different meshes, destroying the surface oxide layer, and finally placing the sample into acetone and alcohol for ultrasonic cleaning for 10 minutes, and then sealing and preserving. Setting an eight-step pulse process of methane for 6min and argon for 300min by using a vacuum furnace control system, then suspending the metal vanadium in a vacuum furnace, vacuumizing the furnace to be less than 0.1Pa, preserving heat for 360min at 1200 ℃, and controlling the atmosphere pressure in the furnace to be 200Pa. And then cooling to room temperature along with a furnace, taking out, and sequentially putting the infiltrated metal vanadium sample into clear water and alcohol for ultrasonic cleaning, thereby obtaining the wear-resistant corrosion-resistant infiltration layer with ultrahigh hardness on the surface of the metal vanadium. The surface of the sample is a VC phase compound layer. The binding force between the infiltration layer and the matrix is 24.3N, and the corrosion rate in high-temperature molten metal cerium is 0.0830 mu m/h. The surface hardness of the infiltrated layer is HV2231, and the thickness of the infiltrated layer is about 34 μm as shown in FIG. 4.
Example 4
Degreasing the surface of a metal vanadium sample, polishing by using a resin abrasive disc to destroy the surface oxide layer, and finally placing the sample into acetone and alcohol for ultrasonic cleaning for 10 minutes, and then sealing and preserving. Setting twenty-step pulse process of methane for 6min and nitrogen for 400min by using a vacuum furnace control system, suspending the metal vanadium in a vacuum furnace, vacuumizing the furnace to be less than 0.1Pa, preserving heat for 460min at 1000 ℃, and controlling the atmosphere pressure in the furnace to be 800Pa. And then cooling to room temperature along with a furnace, taking out, and sequentially putting the infiltrated metal vanadium sample into clear water and alcohol for ultrasonic cleaning, thereby obtaining the wear-resistant corrosion-resistant infiltration layer with ultrahigh hardness on the surface of the metal vanadium. The surface of the sample is a VC phase compound layer. The binding force between the infiltration layer and the matrix is 22.5N, and the corrosion rate in high-temperature molten metal cerium is 0.0860 mu m/h. The surface hardness of the infiltrated layer was HV1667, and the infiltrated layer thickness was about 33.6 μm as shown in fig. 5.
From the results of the above examples, it can be seen that:
(1) The carbide diffusion layer of the superhard ceramic phase disclosed by the invention effectively improves the hardness of the carbide diffusion layer and the binding force with a matrix, the surface hardness is HV 1350-HV 3500, the binding strength between the carburized layer and the matrix is 20-35N, and further the wear resistance and corrosion resistance of the metal vanadium surface are improved, and the corrosion rate of the carbide diffusion layer of the superhard ceramic phase in high-temperature molten metal cerium is 0.0785-0.0930 mu m/h.
(2) The step (3) of the preparation method of the superhard ceramic diffusion layer on the surface of the metal vanadium can form the superhard ceramic layer on the surface of the metal vanadium, and the preparation method is very convenient for mass production, the product quality is easy to control, the required equipment is simple, and the investment is low.
(3) The invention prepares the metal vanadium material with the surface having the wear-resistant and corrosion-resistant carbide diffusion layer of the superhard ceramic phase by using a vacuum pulse carburizing method, the material has the ultra-high surface hardness and uniform diffusion layer thickness, and the bonding strength between the diffusion layer and the matrix is high, and the bonding force is in the range of 20-35N. In addition, the metal vanadium material has excellent corrosion resistance, the corrosion rate in high-temperature molten metal cerium is in the range of 0.0785-0.0930 mu m/h, and the corrosion resistance requirement in a severe environment can be met.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention should not be limited to the embodiments shown herein but is to be accorded the scope consistent with the principles and novel features disclosed herein and defined by the claims.
Claims (8)
1. The superhard ceramic diffusion layer on the surface of the vanadium metal is characterized by mainly being VC phase; the surface hardness of the superhard ceramic permeation layer is HV 1350-HV 3500, and the thickness of the superhard ceramic permeation layer is 10-100 mu m.
2. The metallic vanadium surface superhard ceramic compact of claim 1, wherein the superhard ceramic compact has a corrosion rate in high temperature molten metal cerium of 0.0785-0.0930 μm/h.
3. A method for preparing a superhard ceramic diffusion layer on a vanadium metal surface according to claim 1 or 2, comprising the following steps:
(1) Pretreatment of a matrix: polishing the surface of the metal vanadium matrix, and then ultrasonically cleaning;
(2) Carbon source atmosphere configuration: adjusting the carbon source atmosphere and the inert atmosphere proportion according to different ventilation time;
(3) Carburizing: placing the metal vanadium matrix treated in the step (1) into vacuum equipment, determining the atmosphere configuration of the carbon source in the step (2), and preserving the heat for 1-10h at 800-1400 ℃ under the atmosphere pressure of 200-2000Pa to obtain treated metal vanadium;
(4) Post-treatment: and (3) taking out the metal vanadium treated in the step (3), and cleaning the surface.
4. The method for preparing a superhard ceramic impregnated layer on a vanadium metal surface according to claim 4, wherein the polishing method in the step (1) is polishing with 200-2000 mesh sand paper or polishing with polishing material, and the cleaning agent used for ultrasonic cleaning is acetone or alcohol.
5. The method of claim 4, wherein the carbon source atmosphere configuration in the step (2) is controlled by a vacuum system pulse program, the carbon source atmosphere is configured as acetylene (5-30 min) or methane+ (60-500 min) nitrogen or argon or a combination of one or more of the above, and the atmosphere pressure is 200-2000Pa.
6. The method of claim 4, wherein the step (4) of cleaning the surface comprises: and sequentially placing the metal vanadium into clear water and alcohol for ultrasonic cleaning.
7. A metal vanadium material with a metal vanadium surface superhard ceramic infiltration layer according to claim 1 or 2, or prepared by the preparation method according to any one of claims 3-6.
8. The use of the vanadium metal material of claim 7 in the fields of steel optimization, chemical catalysis, novel batteries, aerospace engine parts or nuclear industry.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410085576.6A CN118147573A (en) | 2024-01-22 | 2024-01-22 | Super-hard ceramic diffusion layer on surface of metal vanadium, preparation method of super-hard ceramic diffusion layer and metal vanadium material |
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| CN202410085576.6A CN118147573A (en) | 2024-01-22 | 2024-01-22 | Super-hard ceramic diffusion layer on surface of metal vanadium, preparation method of super-hard ceramic diffusion layer and metal vanadium material |
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