CN110373593A - A kind of titanium carbonitride based composite metal ceramic material microwave sintering process - Google Patents
A kind of titanium carbonitride based composite metal ceramic material microwave sintering process Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- 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
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- 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
- C22C29/005—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides comprising a particular metallic binder
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- 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
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Abstract
The invention belongs to field of material preparation, especially a kind of titanium carbonitride based composite metal ceramic material microwave sintering process.Include the following steps: step 1: weighing powder in proportion, carry out ball milling mixing, concentration is added within 1.5-2.5 hours before ball milling terminates as the poly-vinyl alcohol solution of 1-5%, after ball milling, drying is ground, sieving；Step 2: the powder pressing screened is formed；Step 3: using microwave sintering process, sample is put into silicon carbide plate assisted heating device to be placed in incubator, with the heating rate persistently overheating of 20~40 DEG C/min to 1550~1650 DEG C, keeps the temperature 5~20min, titanium carbonitride based composite metal ceramic material is made in subsequent furnace cooling.Traditional buried powder assisted sintering is replaced using silicon carbide plate auxiliary heating in microwave sintering, polyvinyl alcohol is enable sufficiently to volatilize during the sintering process, the internal porosity of material during the sintering process is reduced, improves consistency；And subsequent processing is not needed using silicon carbide plate auxiliary heating, simplify preparation flow.
Description
Technical field
The invention belongs to field of material preparation, especially a kind of titanium carbonitride based composite metal ceramic material microwave agglomerant
Skill.
Background technique
Base titanium carbonitride is that hardness is high, wearability is good, stability at elevated temperature is outstanding, to the friction system of metal
Number is extremely low, Deformation Resistance is strong and the cermet material of good mechanical performance, especially its excellent hot properties, even if
It still has higher intensity at a temperature of 1300 DEG C, can be applied to the neck such as aerospace component, bearing, high speed cutting tool
Domain.Currently, carbon nitridation titanium ceramet uses conventional sintering mode to prepare more, as reaction-sintered, pressureless sintering, gas pressure sintering,
Hot pressed sintering, HIP sintering etc..However there are many drawbacks for conventional sintering, as equipment and maintenance cost are high；Using heat
Radiation, heat transfer heating method the temperature gradient in material can be caused larger, material internal is easy to produce residual stress；Preparation
Period is long, low efficiency, is unfavorable for the batch production etc. of material.With the development of science and technology, some new technologies also generate therewith,
Microwave sintering causes the concern and research of many scholars as a kind of efficient, energy-saving and environmental protection novel sintered mode.
Currently, the microwave sintering process of carbon nitridation titanium ceramet material is still not perfect, report also relatively fewer.From now
There are article (H.Hu, Y.Cheng, Z.Yin, Y.Zhang, T.Lu, Mechanical
propertiesandmicrostructureofTi(C,N)basedcermetcuttingtoolmaterialsfabricate
Dbymicrowavesintering, Ceramics International.41 (2015) 15017-15023) it can be seen that, addition
Mass fraction 7.5%Ni and 7.5%Co can prepare hardness using microwave sintering mode and be up to 15.49 as binder
± 0.21GPa, fracture toughness reach the base titanium carbonitride material of 10 ± 0.55MPa.m1/2.With other ceramic materials
It compares, toughness is relatively high, but lower hardness.
In the patent of invention that number of patent application is 201510779093.7, it is compound to be prepared for a kind of aluminium oxide/titanium carbonitride
Ceramics, with Al2O3Based on, activeness and quietness phase is used as with Ti (C, N), when alumina content is 61%, titanium carbonitride content is
30%, when sintering temperature is 1550 DEG C, maximum hardness reaches 18.4GPa, toughness 6.72MPam1/2, hardness mentioned
Height, but toughness is still lower, and lower toughness will lead to material and be easy to happen brittle fracture, and significantly limit material uses model
It encloses.
In conclusion there are still deficiencies for the microwave sintering process of existing carbon nitridation titanium ceramet material, it is prepared
Carbon nitridation titanium ceramet comprehensive mechanical property is still undesirable.
Summary of the invention
Technical problem solved by the invention is to provide a kind of titanium carbonitride based composite metal ceramic material microwave sintering
Technique.
The technical solution for realizing the aim of the invention is as follows:
A kind of titanium carbonitride based composite metal ceramic material microwave sintering process, the titanium carbonitride based composite metal ceramics
Material includes following ingredient: Ti (C, N) 62%-68%, Mo by weight percentage2C 15%, WC 5%, Ni 3%-6%,
Co 6%-9%, Mo 3%-6%；Include the following steps:
Step 1: weighing Ti (C, N), Mo in proportion2C, WC, Ni, Co and Mo powder carries out ball milling mixing, terminates in ball milling
First 1.5-2.5 hours is added concentration as the poly-vinyl alcohol solution of 1-5%, and dry after ball milling, grinding is sieved；
Step 2: by the powder screened compression moulding under the pressure of 100-300MPa, obtaining cermet biscuit (4)；
Step 3: in atmosphere of inert gases, using microwave sintering process, sample being put into silicon carbide plate assisted heating device
It is placed in incubator, with the heating rate persistently overheating of 20~40 DEG C/min to 1550~1650 DEG C, keeps the temperature 5~20min, with
Titanium carbonitride based composite metal ceramic material is made in furnace cooling afterwards.
Further, in the step (1), the ball milling mixing is that weighed powder is put into corundum ball grinder,
Using dehydrated alcohol as ball-milling medium, abrading-ball is tungsten-carbide ball.
Further, the inert gas in the step (3) be nitrogen, nitrogen pressure within the scope of 0.1-0.12MPa, and
In flow regime.
Further, the assisted heating device in the step (3) includes carborundum ring and silicon carbide plate, the silicon carbide
Ring set is located at the periphery of cermet biscuit, and the silicon carbide plate is two panels, is separately positioned on up and down the two of cermet biscuit
Side.
Further, the assisted heating device for being placed with cermet biscuit is placed in crucible, and crucible is placed in incubator.
Compared with prior art, the present invention its remarkable advantage is as follows:
(1) traditional buried powder assisted sintering is replaced using silicon carbide plate auxiliary heating in microwave sintering, makes polyvinyl alcohol
It can sufficiently volatilize during the sintering process, reduce the internal porosity of material during the sintering process, improve the consistency of product, from
And improve performance；And subsequent processing is not needed using silicon carbide plate auxiliary heating, preparation flow is simplified, its production effect is improved
Rate reduces production cost.
(2) by Ni, Co, Mo improve the consistency and comprehensive mechanical property of cermet as metallic addition；Ni,
Co liquefies at high temperature, generates lateral flow under the action of high temperature driven energy, to make Ti (C, N) solid particle that particle occur
It resets, so that the microstructure of cermet becomes more uniform；The addition of Mo can be improved liquid phase Ni and solid particle Ti (C,
N the wetability between), to enable the gap between liquid phase Ni preferably filled solid particle, so that the densification of cermet
Degree gets a promotion；During the sintering process, Ti (C, N) particle part can be dissolved among liquid phase Ni and Co, pass through Precipitation shape
At (Ti, W, Mo) (C, N)-Ni-Co solid solution；This structure can effectively inhibit growing up for crystal grain, to improve the hardness of material；
Metal itself has good toughness, therefore the addition of metal phase can greatly improve the fracture toughness of material.
Present invention is further described in detail with reference to the accompanying drawing.
Detailed description of the invention
Assisted heating device Fig. 1 used herein.
The section performance SEM figure of titanium carbonitride based composite metal ceramic material made from Fig. 2 embodiment 9.
Description of symbols:
1- high temperature mullite, 2- high temperature mullite fiber, 3- silicon carbide plate, 4- cermet biscuit.
Specific embodiment
A kind of titanium carbonitride based composite metal ceramic material includes by weight percentage following ingredient: Ti (C, N)
62%-68%, Mo2C 15%, WC 5%, Ni 3%-6%, Co 6%-9%, Mo 3%-6%.
Preferred material component is Ti (C, N) 62%, Mo2C 15%, WC 5%, Ni 6%, Co 6%, Mo 6%, sample
Product hardness reaches 16.25 ± 0.09GPa, and toughness reaches 12.41 ± 0.33MPa.m1/2。
The present invention also provides the microwave sintering method of above-mentioned titanium carbonitride composite cermet material, use is energy-efficient
Microwave Sintering Techniques realize and exist by improving the parameters such as auxiliary thermal, optimization phase content, sintering temperature and soaking time
The titanium carbonitride composite cermet material with higher comprehensive mechanical property is prepared in short cycle, is included the following steps:
Step 1, Ti (C, N), Mo are weighed in proportion2C, WC, Ni, Co and Mo powder carries out ball milling mixing, terminates in ball milling
First 1.5-2.5 hours is added concentration as the poly-vinyl alcohol solution of 1-3%, and dry after ball milling, grinding is sieved；The ball
Mill mixing is that the powder that will be weighed is put into corundum ball grinder, and using dehydrated alcohol as ball-milling medium, abrading-ball selects tungsten carbide
Ball.
Step 2, by the powder screened compression moulding under the pressure of 100-300MPa；
Step 3, in nitrogen atmosphere, using microwave sintering process, sample is put into silicon carbide plate assisted heating device juxtaposition
In incubator, with the heating rate persistently overheating of 20~40 DEG C/min to 1550~1650 DEG C, keep the temperature 5~20min, then with
Furnace is cooling, and titanium carbonitride based composite metal ceramic material is made；The nitrogen atmosphere, pressure more than standard atmospheric pressure,
Air pressure is within the scope of 0.1-0.12MPa and is in flow regime.
In step 3, the assisted heating device is by two panels silicon carbide plate and a carborundum ring group as shown in Figure 1
At cermet biscuit 4 is placed between two silicon carbide plates, and silicon carbide ring set is placed in crucible around print.Incubator by
High temperature mullite material is made, and is filled with high temperature mullite fiber, and crucible is placed in the middle part of incubator.
The application uses Ni, and Co, Mo improve the consistency and comprehensive mechanical property of cermet as metallic addition.
Ni, Co liquefy at high temperature, generate lateral flow under the action of high temperature driven energy, so that Ti (C, N) solid particle be made to occur
Particle re-arrangement, so that the microstructure of cermet becomes more uniform.The addition of Mo can be improved liquid phase Ni and solid particle
Wetability between Ti (C, N), thus enable the gap between liquid phase Ni preferably filled solid particle, so that cermet
Consistency gets a promotion.During the sintering process, Ti (C, N) particle part can be dissolved among liquid phase Ni and Co, be analysed by precipitating
Form (Ti, W, Mo) (C, N)-Ni-Co solid solution (as shown in Fig. 2) out.This structure can wrap up Ti (C, N) particle to have
Effect inhibits growing up for crystal grain, improves the hardness of material.Metal itself has good toughness, therefore the addition of metal phase can be greatly
The fracture toughness of ground raising material.It is had both well in conclusion can be prepared by the component proportion of optimization metallic addition
The cermet of hardness and fracture toughness.(innovative point is described in the form of technological means), generate xxx tissue (it is microcosmic or
Far from from), have effect (having both hardness and toughness)
It is described in further details below with reference to embodiment.
Embodiment 1:
A kind of titanium carbonitride based composite metal ceramic material and its microwave sintering method, specifically: Ti by weight percent
(C, N) 68%, Mo2C15%, WC 5%, Ni 3%, Co9% carry out ingredient, by the mixed-powder of preparation with dehydrated alcohol be situated between
Matter, tungsten-carbide ball are abrading-ball, are put into ball milling 24 hours in corundum ball grinder, ratio of grinding media to material 8:1, and before ball milling terminates 2 hours
The polyvinyl alcohol water solution that concentration is 3wt% is added；Grinding is dried after ball milling, and is sieved with 100 mesh sieve, and the powder after sieving is carried out
It is dry-pressing formed, pressure 300MPa, pressure maintaining 2 minutes；Green compact is put into the auxiliary thermal of silicon carbide plate to be placed in microwave agglomerating furnace,
By vacuum state in furnace chamber, 0.11MPa nitrogen is then poured；It opens microwave power supply to be heated, with the liter of 20 DEG C/min
Sample is heated to 1600 DEG C by warm rate, keeps the temperature 10min, then furnace cooling.After tested, the Vickers hardness of material is
14.92 ± 0.90GPa, fracture toughness are 11.58 ± 2.22MPa.m1/2。
Embodiment 2:
A kind of titanium carbonitride based composite metal ceramic material and its microwave sintering method, specifically: Ti by weight percent
(C, N) 68%, Mo2C 15%, WC 5%, Ni 3%, Co 6%, Mo 3% carry out ingredient, by the mixed-powder of preparation with nothing
Water-ethanol is medium, and tungsten-carbide ball is abrading-ball, is put into ball milling 24 hours in corundum ball grinder, ratio of grinding media to material 8:1, and in ball milling knot
The polyvinyl alcohol water solution that concentration is 3wt% is added before beam 2 hours；Grinding is dried after ball milling, and is sieved with 100 mesh sieve, after sieving
Powder carry out dry-pressing formed, pressure 300MPa, pressure maintaining 2 minutes；By green compact be put into the auxiliary thermal of silicon carbide plate be placed in it is micro-
In wave sintering furnace, by vacuum state in furnace chamber, 0.11MPa nitrogen is then poured；It opens microwave power supply to be heated, with 20
DEG C/sample is heated to 1600 DEG C by the heating rate of min, keep the temperature 10min, then furnace cooling.After tested, the Vickers of material
Hardness is 13.14 ± 0.88GPa, and fracture toughness is 13.92 ± 3.31MPa.m1/2。
It is compared with example 1 it is found that under same sintering process, performance is variant, breaks when using the part Mo substitution Co
It splits toughness to increase, Vickers hardness is declined.
Embodiment 3:
A kind of titanium carbonitride based composite metal ceramic material and its microwave sintering method, specifically: Ti by weight percent
(C, N) 68%, Mo2C 15%, WC 5%, Ni 3%, Co 3%, Mo 6% carry out ingredient, by the mixed-powder of preparation with nothing
Water-ethanol is medium, and tungsten-carbide ball is abrading-ball, is put into ball milling 24 hours in corundum ball grinder, ratio of grinding media to material 8:1, and in ball milling knot
The polyvinyl alcohol water solution that concentration is 3wt% is added before beam 2 hours；Grinding is dried after ball milling, and is sieved with 100 mesh sieve, after sieving
Powder carry out dry-pressing formed, pressure 300MPa, pressure maintaining 2 minutes；By green compact be put into the auxiliary thermal of silicon carbide plate be placed in it is micro-
In wave sintering furnace, by vacuum state in furnace chamber, 0.11MPa nitrogen is then poured；It opens microwave power supply to be heated, with 20
DEG C/sample is heated to 1600 DEG C by the heating rate of min, keep the temperature 10min, then furnace cooling.After tested, the Vickers of material
Hardness is 6.08 ± 0.15GPa, and fracture toughness is 6.02 ± 1.26MPa.m1/2。
Embodiment 4:
A kind of titanium carbonitride based composite metal ceramic material and its microwave sintering method, specifically: Ti by weight percent
(C, N) 62%, Mo2C 15%, WC 5%, Ni 6%, Co 6%, Mo 6% carry out ingredient, by the mixed-powder of preparation with nothing
Water-ethanol is medium, and tungsten-carbide ball is abrading-ball, is put into ball milling 24 hours in corundum ball grinder, ratio of grinding media to material 8:1, and in ball milling knot
The polyvinyl alcohol water solution that concentration is 3wt% is added before beam 2 hours；Grinding is dried after ball milling, and is sieved with 100 mesh sieve, after sieving
Powder carry out dry-pressing formed, pressure 300MPa, pressure maintaining 2 minutes；By green compact be put into the auxiliary thermal of silicon carbide plate be placed in it is micro-
In wave sintering furnace, by vacuum state in furnace chamber, 0.11MPa nitrogen is then poured；It opens microwave power supply to be heated, with 20
DEG C/sample is heated to 1600 DEG C by the heating rate of min, keep the temperature 10min, then furnace cooling.After tested, the Vickers of material
Hardness is 16.43 ± 0.65GPa, and fracture toughness is 7.61 ± 0.94MPa.m1/2。
The content it is found that increase Binder Phase Ni and Co is compared with example 3, and dimension can be obviously improved under identical sintering process
Family name's hardness and fracture toughness.
Embodiment 5:
A kind of titanium carbonitride based composite metal ceramic material and its microwave sintering method, specifically: Ti by weight percent
(C, N) 62%, Mo2C 15%, WC 5%, Ni 6%, Co 6%, Mo 6% carry out ingredient, by the mixed-powder of preparation with nothing
Water-ethanol is medium, and tungsten-carbide ball is abrading-ball, is put into ball milling 24 hours in corundum ball grinder, ratio of grinding media to material 8:1, and in ball milling knot
The polyvinyl alcohol water solution that concentration is 3wt% is added before beam 2 hours；Grinding is dried after ball milling, and is sieved with 100 mesh sieve, after sieving
Powder carry out dry-pressing formed, pressure 300MPa, pressure maintaining 2 minutes；By green compact be put into the auxiliary thermal of silicon carbide plate be placed in it is micro-
In wave sintering furnace, by vacuum state in furnace chamber, 0.11MPa nitrogen is then poured；It opens microwave power supply to be heated, with 20
DEG C/sample is heated to 1550 DEG C by the heating rate of min, keep the temperature 10min, then furnace cooling.After tested, the Vickers of material
Hardness is 15.93 ± 0.15GPa, and fracture toughness is 6.01 ± 0.92MPa.m1/2。
Embodiment 6:
A kind of titanium carbonitride based composite metal ceramic material and its microwave sintering method, specifically: Ti by weight percent
(C, N) 62%, Mo2C 15%, WC 5%, Ni 6%, Co 6%, Mo 6% carry out ingredient, by the mixed-powder of preparation with nothing
Water-ethanol is medium, and tungsten-carbide ball is abrading-ball, is put into ball milling 24 hours in corundum ball grinder, ratio of grinding media to material 8:1, and in ball milling knot
The polyvinyl alcohol water solution that concentration is 3wt% is added before beam 2 hours；Grinding is dried after ball milling, and is sieved with 100 mesh sieve, after sieving
Powder carry out dry-pressing formed, pressure 300MPa, pressure maintaining 2 minutes；By green compact be put into the auxiliary thermal of silicon carbide plate be placed in it is micro-
In wave sintering furnace, by vacuum state in furnace chamber, 0.11MPa nitrogen is then poured；It opens microwave power supply to be heated, with 20
DEG C/sample is heated to 1650 DEG C by the heating rate of min, keep the temperature 10min, then furnace cooling.After tested, the Vickers of material
Hardness is 16.67 ± 0.42GPa, and fracture toughness is 7.20 ± 1.44MPa.m1/2。
Example 4-6 illustrates that in the identical situation of material component, sintering temperature has an impact to material property, and temperature is got over
Height, comprehensive mechanical property are better.
Embodiment 7:
A kind of titanium carbonitride based composite metal ceramic material and its microwave sintering method, specifically: Ti by weight percent
(C, N) 62%, Mo2C 15%, WC 5%, Ni 6%, Co 6%, Mo 6% carry out ingredient, by the mixed-powder of preparation with nothing
Water-ethanol is medium, and tungsten-carbide ball is abrading-ball, is put into ball milling 24 hours in corundum ball grinder, ratio of grinding media to material 8:1, and in ball milling knot
The polyvinyl alcohol water solution that concentration is 3wt% is added before beam 2 hours；Grinding is dried after ball milling, and is sieved with 100 mesh sieve, after sieving
Powder carry out dry-pressing formed, pressure 300MPa, pressure maintaining 2 minutes；By green compact be put into the auxiliary thermal of silicon carbide plate be placed in it is micro-
In wave sintering furnace, by vacuum state in furnace chamber, 0.11MPa nitrogen is then poured；It opens microwave power supply to be heated, with 20
DEG C/sample is heated to 1600 DEG C by the heating rate of min, keep the temperature 0min, then furnace cooling.After tested, the Vickers of material
Hardness is 16.58 ± 0.12GPa, and fracture toughness is 6.79 ± 0.24MPa.m1/2。
Embodiment 8:
A kind of titanium carbonitride based composite metal ceramic material and its microwave sintering method, specifically: Ti by weight percent
(C, N) 62%, Mo2C 15%, WC 5%, Ni 6%, Co 6%, Mo 6% carry out ingredient, by the mixed-powder of preparation with nothing
Water-ethanol is medium, and tungsten-carbide ball is abrading-ball, is put into ball milling 24 hours in corundum ball grinder, ratio of grinding media to material 8:1, and in ball milling knot
The polyvinyl alcohol water solution that concentration is 3wt% is added before beam 2 hours；Grinding is dried after ball milling, and is sieved with 100 mesh sieve, after sieving
Powder carry out dry-pressing formed, pressure 300MPa, pressure maintaining 2 minutes；By green compact be put into the auxiliary thermal of silicon carbide plate be placed in it is micro-
In wave sintering furnace, by vacuum state in furnace chamber, 0.11MPa nitrogen is then poured；It opens microwave power supply to be heated, with 20
DEG C/sample is heated to 1600 DEG C by the heating rate of min, keep the temperature 5min, then furnace cooling.After tested, the Vickers of material
Hardness is 15.85 ± 0.31GPa, and fracture toughness is 9.27 ± 0.82MPa.m1/2。
Embodiment 9:
A kind of titanium carbonitride based composite metal ceramic material and its microwave sintering method, specifically: Ti by weight percent
(C, N) 62%, Mo2C 15%, WC 5%, Ni 6%, Co 6%, Mo 6% carry out ingredient, by the mixed-powder of preparation with nothing
Water-ethanol is medium, and tungsten-carbide ball is abrading-ball, is put into ball milling 24 hours in corundum ball grinder, ratio of grinding media to material 8:1, and in ball milling knot
The polyvinyl alcohol water solution that concentration is 3wt% is added before beam 2 hours；Grinding is dried after ball milling, and is sieved with 100 mesh sieve, after sieving
Powder carry out dry-pressing formed, pressure 300MPa, pressure maintaining 2 minutes；By green compact be put into the auxiliary thermal of silicon carbide plate be placed in it is micro-
In wave sintering furnace, by vacuum state in furnace chamber, 0.11MPa nitrogen is then poured；It opens microwave power supply to be heated, with 20
DEG C/sample is heated to 1600 DEG C by the heating rate of min, keep the temperature 20min, then furnace cooling.After tested, the Vickers of material
Hardness is 16.25 ± 0.09GPa, and fracture toughness is 12.41 ± 0.33MPa.m1/2。
Embodiment 7-9 is compared, illustrate material component under the same conditions, at 1600 DEG C keep the temperature different time to material
Material performance has an impact.
To sum up, suitable carbide and metallic addition is added, by upgrading auxiliary thermal, optimizes sintering temperature and heat preservation
Time can effectively improve the consistency of cermet, hardness and fracture toughness.The preparation process greatly improves metal
The comprehensive performance of ceramics, expands the use scope of material.
Claims (5)
1. a kind of titanium carbonitride based composite metal ceramic material microwave sintering process, which is characterized in that the titanium carbonitride base is multiple
It closes cermet material by weight percentage, includes following ingredient: Ti (C, N) 62%-68%, Mo2C15%, WC5%,
Ni3%-6%, Co6%-9%, Mo3%-6%；Include the following steps:
Step 1: weighing Ti (C, N), Mo in proportion2C, WC, Ni, Co and Mo powder carries out ball milling mixing, before ball milling terminates
Concentration is added within 1.5-2.5 hours as the poly-vinyl alcohol solution of 1-5%, dry after ball milling, grinding is sieved；
Step 2: by the powder screened compression moulding under the pressure of 100-300MPa, obtaining cermet biscuit (4)；
Step 3: in atmosphere of inert gases, using microwave sintering process, sample being put into silicon carbide plate assisted heating device juxtaposition
In incubator, with the heating rate persistently overheating of 20~40 DEG C/min to 1550~1650 DEG C, keep the temperature 5~20min, then with
Furnace is cooling, and titanium carbonitride based composite metal ceramic material is made.
2. technique according to claim 1, which is characterized in that in the step (1), the ball milling mixing is will to weigh
Powder be put into corundum ball grinder, using dehydrated alcohol as ball-milling medium, abrading-ball is tungsten-carbide ball.
3. technique according to claim 1, which is characterized in that the inert gas in the step (3) is nitrogen, nitrogen gas
It is pressed within the scope of 0.1-0.12MPa, and is in flow regime.
4. technique according to claim 1, which is characterized in that the assisted heating device in the step (3) includes carbonization
Silicon ring and silicon carbide plate, the carborundum ring are set in the periphery of cermet biscuit (4), and the silicon carbide plate is two panels, point
It She Zhi not be in the two sides up and down of cermet biscuit (4).
5. technique according to claim 4, which is characterized in that be placed with the assisted heating device of cermet biscuit (4)
It is placed in crucible, crucible is placed in incubator.
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| CN111519115A (en) * | 2020-03-25 | 2020-08-11 | 成都美奢锐新材料有限公司 | High-toughness high-wear-resistance titanium carbonitride based cermet material and preparation method thereof |
| CN112142479A (en) * | 2020-09-04 | 2020-12-29 | 华侨大学 | Preparation method of SiC @ Ti (C, N) core-shell structure ceramic powder |
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| CN112142479A (en) * | 2020-09-04 | 2020-12-29 | 华侨大学 | Preparation method of SiC @ Ti (C, N) core-shell structure ceramic powder |
| CN112142479B (en) * | 2020-09-04 | 2022-07-29 | 华侨大学 | Preparation method of SiC @ Ti (C, N) core-shell structure ceramic powder |
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