CN116162839A - Corrosion-resistant titanium carbonitride-based metal ceramic material and preparation method thereof - Google Patents

Corrosion-resistant titanium carbonitride-based metal ceramic material and preparation method thereof Download PDF

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Publication number
CN116162839A
CN116162839A CN202310048174.4A CN202310048174A CN116162839A CN 116162839 A CN116162839 A CN 116162839A CN 202310048174 A CN202310048174 A CN 202310048174A CN 116162839 A CN116162839 A CN 116162839A
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raw material
parts
metal
ceramic raw
corrosion
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罗成
唐冬梅
梁小东
王金林
胡少云
刘彬
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Seed Technologies Corp Ltd
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Seed Technologies Corp Ltd
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/04—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbonitrides
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/05—Mixtures of metal powder with non-metallic powder
    • C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
    • C22C29/10—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on titanium carbide
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/16—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on nitrides
    • 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
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Abstract

The invention provides a corrosion-resistant titanium carbonitride-based cermet material which comprises the following raw materials in parts by weight: 40-60 parts of a first ceramic raw material, 6-40 parts of a second ceramic raw material, 10-30 parts of a metal raw material, 0.5-5 parts of AlN and 0-1.5 parts of carbon black; the metal raw material is an alloy material composed of two or more of Co, ni, mo and Cr and/or a metal material composed of Co, ni, mo or Cr. The invention uses alloy powder composed of Ni, cr and Mo as metal raw materials, and the corrosion resistance of the alloy powder is superior to that of the alloy powder mixed with metal Ni, metal Cr and metal Mo; meanwhile, the first ceramic raw material, the second ceramic raw material and the ceramic raw material AlN are added, during the liquid phase sintering process of AlN, ni reacts with AlN to synthesize Ni3Al in situ, so that the uniformity and the dispersibility are better, and the corrosion resistance is enhanced.

Description

Corrosion-resistant titanium carbonitride-based metal ceramic material and preparation method thereof
Technical Field
The invention relates to the field of metal ceramics, in particular to a corrosion-resistant titanium carbonitride-based metal ceramic material and a preparation method thereof.
Background
Cermet has both ceramic hardness, wear resistance and toughness. WC-based cemented carbide is one of the most widely used cermet materials, but cemented carbide materials have problems of poor corrosion resistance and high-temperature oxidation. The TiCN-based metal ceramic is developed from TiC-based metal ceramic, and compared with WC-based hard alloy, the TiCN-based metal ceramic has better wear resistance, corrosion resistance and oxidation resistance; compared with TiC-based cermet, tiCN-based cermet has higher bending strength and wear resistance. In the field of high-speed cutting, tiCN-based metal ceramics gradually replace WC-based hard alloy, and are gradually applied under the working conditions of wear resistance, corrosion resistance and high-temperature oxidation resistance.
Patent CN201811528786.9 discloses a corrosion-resistant hard alloy and application thereof in the preparation of artificial board saws, and the corrosion-resistant hard alloy is prepared from WC-Cr 3 C 2 The addition of rare noble metals rhenium to Co—Ni cemented carbides, however, the cost of using rare noble metals is too high.
Patent CN201410082829.0, by adding Ni 3 Al intermetallic compound improves corrosion resistance and oxidation resistance of cermet, and Ni is prepared by the same 3 The Al is prepared by mixing, ball milling, sintering and crushing metal Ni and metal Al powder, but crushed Ni 3 The granularity of Al and the subsequent uniform dispersion of ball milling are difficult to control, and the comprehensive performance of the metal ceramic is affected.
Even though the WC-based hard alloy is adopted to replace Co and the scheme of adding corrosion-resistant metal Cr is adopted, the working condition of corrosive media (such as strong acid media) cannot be met, the conditions of color change, roughening and the like of the surface of a workpiece can occur in the use process, and the service life is reduced, so that the development of a material special for the corrosion-resistant media is necessary.
Disclosure of Invention
In view of the above, the technical problem to be solved by the invention is to provide a corrosion-resistant titanium carbonitride-based cermet material, which has good corrosion resistance and can be used in corrosion-resistant media.
The invention provides a corrosion-resistant titanium carbonitride-based cermet material which comprises the following raw materials in parts by weight:
40-60 parts of a first ceramic raw material, 6-40 parts of a second ceramic raw material, 10-30 parts of a metal raw material, 0.5-5 parts of AlN and 0-1.5 parts of carbon black;
the metal raw material is an alloy material composed of two or more of Co, ni, mo and Cr and/or a metal material composed of Co, ni, mo or Cr.
Preferably, the first ceramic raw material is selected from one or more of Ti (C, N), tiC or TiN.
Preferably, the second ceramic raw material is one or more of Mo2C, WC, (Ti, W) C, taC, nbC, (Ta, nb) C, cr C2 or VC.
Preferably, the second ceramic raw material comprises a combination of one of Mo2C or WC with the remaining raw materials comprising one or more of (Ti, W) C, taC, nbC, (Ta, nb) C, cr C2 or VC.
Preferably, the Cr content accounts for 5-40 wt% of the metal raw material, and the Mo content accounts for 0-10 wt% of the metal raw material.
Preferably, the Fisher-Tropsch particle size (FSSS) of the first ceramic raw material is less than or equal to 5 mu m, and the oxygen content is less than or equal to 0.8%; the Fisher-Tropsch particle size (FSSS) of the second ceramic raw material is less than or equal to 5 mu m, and the oxygen content is less than or equal to 0.8%; the Fisher-Tropsch particle size (FSSS) of the metal raw material is less than or equal to 5 mu m, and the oxygen content is less than or equal to 0.8%; the Fisher-Tropsch particle size (FSSS) of the carbon black is less than or equal to 5 mu m, and the oxygen content is less than or equal to 0.8%.
The invention provides the application of the corrosion-resistant titanium carbonitride-based cermet material in a corrosion-resistant medium.
The invention provides a preparation method of the corrosion-resistant titanium carbonitride-based metal ceramic material, which comprises the following steps:
a) Mixing the first ceramic raw material, the second ceramic raw material, the metal raw material and the carbon black, ball milling, adding a forming agent, and drying to obtain a mixture;
b) And (5) molding and sintering the mixture to obtain the composite material.
Preferably, the ball milling material ratio in the step A) is 3-10:1; the forming agent is paraffin or polyethylene glycol; the addition amount of the forming agent is 3-5 wt%; the drying temperature is 70-100 ℃; the drying time is 6-12 h.
Preferably, the shaping in step B) is compression molding or cold isostatic molding;
h2 or Ar is used as carrier gas to remove the forming agent before sintering;
the sintering is specifically as follows: vacuum sintering or low-pressure sintering at 1450-1550 ℃.
Compared with the prior art, the invention provides a corrosion-resistant titanium carbonitride-based metal ceramic material, which comprises the following raw materials in parts by weight: 40-60 parts of a first ceramic raw material, 6-40 parts of a second ceramic raw material, 10-30 parts of a metal raw material, 0.5-5 parts of AlN and 0-1.5 parts of carbon black; the metal raw material is an alloy material composed of two or more of Co, ni, mo and Cr and/or a metal material composed of Co, ni, mo or Cr. The invention uses alloy powder composed of Ni, cr and Mo as metal raw materials, and the corrosion resistance of the alloy powder is superior to that of the alloy powder mixed with metal Ni, metal Cr and metal Mo; meanwhile, the first ceramic raw material, the second ceramic raw material and the ceramic raw material AlN are added, during the liquid phase sintering process of AlN, ni reacts with AlN to synthesize Ni3Al in situ, so that the uniformity and the dispersibility are better, and the corrosion resistance is enhanced.
Detailed Description
The invention provides a corrosion-resistant titanium carbonitride-based cermet material and a preparation method thereof, and a person skilled in the art can properly improve the technological parameters by referring to the content of the text. It is expressly noted that all such similar substitutions and modifications will be apparent to those skilled in the art, and they are intended to be within the scope of the present invention. While the methods and applications of this invention have been described in terms of preferred embodiments, it will be apparent to those skilled in the relevant art that the invention can be practiced and practiced with modification and alteration and combination of the methods and applications herein without departing from the spirit and scope of the invention.
The invention provides a corrosion-resistant titanium carbonitride-based cermet material which comprises the following raw materials in parts by weight:
40-60 parts of a first ceramic raw material, 6-40 parts of a second ceramic raw material, 10-30 parts of a metal raw material, 0.5-5 parts of AlN and 0-1.5 parts of carbon black;
the metal raw material is an alloy material composed of two or more of Co, ni, mo and Cr and/or a metal material composed of Co, ni, mo or Cr.
When the total amount of the corrosion-resistant titanium carbonitride-based cermet material is 100, the weight parts are equal to the mass percent.
The corrosion-resistant titanium carbonitride-based cermet material provided by the invention comprises 40-60 parts by weight of a first ceramic raw material; preferably comprises 42 to 58 parts by weight of a first ceramic raw material; more preferably 43 to 56 parts by weight.
The first ceramic raw material is selected from one or more of Ti (C, N), tiC or TiN.
The Fisher-Tropsch particle size (FSSS) of the first ceramic raw material is less than or equal to 5 mu m, and the oxygen content is less than or equal to 0.8%.
The corrosion-resistant titanium carbonitride-based cermet material provided by the invention comprises 6-40 parts by weight of a second ceramic raw material; more preferably, the ceramic composition comprises 10 to 38 parts by weight of the second ceramic raw material; and most preferably comprises 12 to 36 parts by weight of the second ceramic raw material.
According to the invention, the second ceramic raw material is Mo 2 C、WC、(Ti,W)C、TaC、NbC、(Ta,Nb)C、Cr 3 C 2 Or one or more of VC. Preferably, the second ceramic raw material comprises Mo 2 Combination of one of C or WC with the remaining raw materials including (Ti, W) C, taC, nbC, (Ta, nb) C, cr 3 C 2 Or one or more of VC. Particularly preferred is WC, mo 2 C and (Ta, nb) C.
The Fisher-Tropsch particle size (FSSS) of the second ceramic raw material is less than or equal to 5 mu m, and the oxygen content is less than or equal to 0.8%.
The corrosion-resistant titanium carbonitride-based cermet material provided by the invention comprises 10-30 parts by weight of metal raw materials; preferably, it comprises 12 to 28 parts by weight; more preferably, it is comprised of 14 to 26 parts by weight.
Specifically, the metal raw material is an alloy material composed of two or more of Co, ni, mo and Cr and/or a metal material composed of Co, ni, mo or Cr; more preferable are an alloy material composed of two or more of Co, ni, mo and Cr and a metal material composed of Co, ni, mo or Cr.
The inventors found that the corrosion resistance of the alloy powder composed of Ni, cr and Mo is superior to that of the alloy powder composed of Ni, cr and Mo. Particularly, cr is added in a mode of alloy powder, and is not added in a mode of metal Cr or Cr3C2, so that Cr is mainly distributed in a metal binding phase, only a small amount of Cr is distributed in a ceramic hard phase, and Cr is distributed uniformly and synchronously along with Ni in the metal binding phase, so that enough Cr can form a stable Cr2O3 protective film in a corrosive medium, and the corrosion resistance is improved.
The Cr content accounts for 5 to 40 weight percent of the metal raw material, and the Mo content accounts for 0 to 10 weight percent of the metal raw material.
The Fisher-Tropsch particle size (FSSS) of the metal raw material is less than or equal to 5 mu m, and the oxygen content is less than or equal to 0.8%.
The corrosion-resistant titanium carbonitride-based cermet material provided by the invention comprises 0.5-5 parts by weight of AlN; preferably AlN 1-4 parts by weight; more preferably 2 to 3 parts by weight.
In the invention, the ceramic raw material AlN is added, and in the liquid phase sintering process, ni reacts with AlN to synthesize Ni in situ 3 Al has better uniformity and dispersibility, and enhances the corrosion resistance.
The corrosion-resistant titanium carbonitride based cermet material provided by the invention comprises 0-1.5 parts by weight of carbon black; more preferably 0.5 to 1.3 parts by weight.
Specifically, the Fisher-Tropsch particle size (FSSS) of the carbon black is less than or equal to 5 mu m, and the oxygen content is less than or equal to 0.8%.
In a part of the preferred embodiment of the invention, the corrosion-resistant titanium carbonitride-based cermet material comprises the following raw materials in parts by weight:
42-58 parts of a first ceramic raw material, 10-38 parts of a second ceramic raw material, 12-28 parts of a metal raw material, 1-4 parts of AlN and 0.5-1.3 parts of carbon black;
in a part of the preferred embodiment of the invention, the corrosion-resistant titanium carbonitride-based cermet material comprises the following raw materials in parts by weight:
43-56 parts of first ceramic raw material, 12-36 parts of second ceramic raw material, 14-26 parts of metal raw material, 2-3 parts of AlN and 0.8-1.1 parts of carbon black.
The invention realizes the improvement of the corrosion resistance of the titanium carbonitride-based cermet material by solid solution strengthening of the metal binding phase in the titanium carbonitride-based cermet and changing the components and the proportion of the metal binding phase.
The invention adds the ceramic raw material AlN, the AlN is decomposed in the liquid phase sintering process, the decomposed products respectively provide N element and Al element for the metal ceramic, the N element can be combined with the ceramic raw material to generate TiCN, and the Al element and Ni in the metal phase generate Ni 3 Al phase, the new phase is dispersed and evenly distributed in the metal phase, and has stable chemical property and good oxidation resistance and corrosion resistance.
The invention provides the application of the corrosion-resistant titanium carbonitride-based cermet material in a corrosion-resistant medium.
The invention provides a preparation method of the corrosion-resistant titanium carbonitride-based metal ceramic material, which comprises the following steps:
a) Mixing the first ceramic raw material, the second ceramic raw material, the metal raw material and the carbon black, ball milling, adding a forming agent, and drying to obtain a mixture;
b) And (5) molding and sintering the mixture to obtain the composite material.
The preparation method of the corrosion-resistant titanium carbonitride-based metal ceramic material comprises the steps of firstly mixing a first ceramic raw material, a second ceramic raw material, a metal raw material and carbon black.
The present invention has been described in detail with reference to the above specific components and proportions, and will not be described in detail herein.
Weighing powder raw materials according to the proportion, putting the prepared powder raw materials into a ball mill for ball milling, wherein the ball-to-material ratio is 3:1 to 10:1, a step of; more preferred ball to material ratio 4:1 to 9:1, a step of; most preferably, the ball to material ratio is 5:1 to 8:1.
ball milling, adding a forming agent, and drying to obtain a mixture. The forming agent is preferably paraffin or polyethylene glycol; the addition amount of the forming agent is preferably 3-5 wt%; specifically, the weight percentage can be 3wt%, 4wt% or 5wt%; or a point value between any two of the above.
Drying under vacuum after ball milling is completed, wherein the drying temperature is preferably 70-100 ℃; more preferably 80 to 90 ℃; the drying time is preferably 6-12 hours; more preferably 7 to 11 hours.
And (5) molding and sintering the mixture to obtain the composite material.
The molding is compression molding or cold isostatic molding; the preferred specific examples are: the mixture is put into a die, pressed into a pressed compact and the pressing pressure is 15MPa.
Placing the pressed compact into a vacuum sintering furnace, wherein H is adopted before sintering 2 Or Ar is used as carrier gas to remove the forming agent.
The sintering is specifically as follows: vacuum sintering or low-pressure sintering at 1450-1550 ℃; more preferably 1470 to 1530 c.
The invention provides a corrosion-resistant titanium carbonitride-based cermet material which comprises the following raw materials in parts by weight: 40-60 parts of a first ceramic raw material, 6-40 parts of a second ceramic raw material, 10-30 parts of a metal raw material, 0.5-5 parts of AlN and 0-1.5 parts of carbon black; the metal raw material is an alloy material composed of two or more of Co, ni, mo and Cr and/or a metal material composed of Co, ni, mo or Cr. The invention uses alloy powder composed of Ni, cr and Mo as metal raw materials, and the corrosion resistance of the alloy powder is superior to that of the alloy powder mixed with metal Ni, metal Cr and metal Mo; meanwhile, the first ceramic raw material, the second ceramic raw material and the ceramic raw material AlN are added, during the liquid phase sintering process of AlN, ni reacts with AlN to synthesize Ni3Al in situ, so that the uniformity and the dispersibility are better, and the corrosion resistance is enhanced.
In order to further illustrate the present invention, the following describes in detail a corrosion-resistant titanium carbonitride-based cermet material and a method for preparing the same.
Examples 1 to 5
(1) 1Kg of each was compounded in the weight percentage shown in Table 1.
Table 1 sample composition (mass percent)
Reference numerals Ti(C,N) WC Mo 2 C (Ta,Nb)C Ni Cr NiCr NiCrMo AlN C
Example 1 48 15 10 7 4 / 13 2 1
Example 2 49 14 9 7 4 / 14 2 1
Example 3 50 13 9 7 4 / 14 2 1
Comparative example 1 48 15 10 7 14 3 / / 2 1
Comparative example 2 48 17 10 7 14 3 / / / 1
(2) Preparation of the mixture
Putting the prepared raw materials into a ball milling barrel, wherein the ball material ratio is 8:1, using absolute ethyl alcohol as a ball milling medium, adding 4% paraffin as a forming agent, ball milling for 72 hours, and drying under vacuum at 80 ℃ for 8 hours after ball milling.
(3) Pressing
The mixture is put into a die, pressed into a pressed compact and the pressing pressure is 15MPa.
(4) Sintering
Placing the pressed compact in a vacuum sintering furnace, and using H 2 And (3) removing the forming agent for carrier gas, and preserving the temperature at 1490 ℃ for 1h to obtain the metal ceramic material.
(5) Corrosion resistance was measured and recorded in Table 2
As shown in Table 2, the corrosion resistance of the samples # 1, # 2 and # 3 meeting the requirements of the present invention is greatly improved compared with the corrosion resistance of the comparative samples # 4 and # 5.
Table 2 corrosion resistance test by 10% nitric acid solution immersion
Reference numerals Rate of volume loss 3 days (%) Rate of volume loss 30 days (%)
Example 1 0.0049 0.0362
Example 2 0.0040 0.0299
Example 3 0.0034 0.0278
Comparative example 1 0.0151 0.1239
Comparative example 2 0.0160 0.1310
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims (10)

1. The corrosion-resistant titanium carbonitride-based cermet material is characterized by comprising the following raw materials in parts by weight:
40-60 parts of a first ceramic raw material, 6-40 parts of a second ceramic raw material, 10-30 parts of a metal raw material, 0.5-5 parts of AlN and 0-1.5 parts of carbon black;
the metal raw material is an alloy material composed of two or more of Co, ni, mo and Cr and/or a metal material composed of Co, ni, mo or Cr.
2. The material of claim 1, wherein the first ceramic raw material is selected from one or more of Ti (C, N), tiC, or TiN.
3. The material of claim 1, wherein the second ceramic raw material is one or more of Mo2C, WC, (Ti, W) C, taC, nbC, (Ta, nb) C, cr3C2 or VC.
4. A material according to claim 3, wherein the second ceramic raw material comprises a combination of one of Mo2C or WC with the remaining raw materials comprising one or more of (Ti, W) C, taC, nbC, (Ta, nb) C, cr C2 or VC.
5. The material according to claim 1, wherein the Cr content is 5wt% to 40wt% in the metal raw material and the Mo content is 0wt% to 10wt% in the metal raw material.
6. The material of claim 1, wherein the first ceramic raw material has a fermi particle size (FSSS) of 5 μm or less and an oxygen content of 0.8% or less; the Fisher-Tropsch particle size (FSSS) of the second ceramic raw material is less than or equal to 5 mu m, and the oxygen content is less than or equal to 0.8%; the Fisher-Tropsch particle size (FSSS) of the metal raw material is less than or equal to 5 mu m, and the oxygen content is less than or equal to 0.8%; the Fisher-Tropsch particle size (FSSS) of the carbon black is less than or equal to 5 mu m, and the oxygen content is less than or equal to 0.8%.
7. Use of the corrosion-resistant titanium carbonitride-based cermet material of any one of claims 1-6 in a corrosion resistant medium.
8. A method for preparing the corrosion-resistant titanium carbonitride-based cermet material according to any one of claims 1 to 6, comprising the steps of:
a) Mixing the first ceramic raw material, the second ceramic raw material, the metal raw material and the carbon black, ball milling, adding a forming agent, and drying to obtain a mixture;
b) And (5) molding and sintering the mixture to obtain the composite material.
9. The method according to claim 8, wherein the ball milling in step a) has a material ratio of 3-10:1; the forming agent is paraffin or polyethylene glycol; the addition amount of the forming agent is 3-5 wt%; the drying temperature is 70-100 ℃; the drying time is 6-12 h.
10. The method of claim 8, wherein the shaping in step B) is compression molding or cold isostatic molding;
h2 or Ar is used as carrier gas to remove the forming agent before sintering;
the sintering is specifically as follows: vacuum sintering or low-pressure sintering at 1450-1550 ℃.
CN202310048174.4A 2023-01-31 2023-01-31 Corrosion-resistant titanium carbonitride-based metal ceramic material and preparation method thereof Pending CN116162839A (en)

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