CN107311663A - A kind of new tantalum nitride hard alloy and preparation method thereof - Google Patents
A kind of new tantalum nitride hard alloy and preparation method thereof Download PDFInfo
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- CN107311663A CN107311663A CN201710212676.0A CN201710212676A CN107311663A CN 107311663 A CN107311663 A CN 107311663A CN 201710212676 A CN201710212676 A CN 201710212676A CN 107311663 A CN107311663 A CN 107311663A
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Abstract
The invention discloses a kind of new tantalum nitride hard alloy and preparation method thereof, hard alloy field is related generally to.The present invention is prepared with well-crystallized form and microstructural tantalum nitride sintering cemented carbide block first using the pure phase sintering process without binding agent.Find that this hard alloy provided has that crystallite dimension is small, consistency is high by X-ray diffraction and sem test analysis, the characteristics of Stability Analysis of Structures.Because preparation technology is simple and with the hardness higher than commercial tungsten carbide, is developing into a kind of new high rigidity, high intensity, the novel hard alloy of high tenacity.
Description
Technical field
The present invention relates to a kind of new tantalum nitride hard alloy, be specially related to a kind of new tantalum nitride hard alloy and its
Preparation method.
Background technology
Superhard material has extensive industrial use, such as cutting tool.Diamond is that known hardness is maximum
Material, in order to obtain the hard material of class dimantine, people achieve in the preparation and theoretical research of boron carbon nitrogen series compound
Very big progress.Another approach for exploring superhard material is the lightweight element that covalent bonding type is introduced in transition metal
(such as boron, carbon, nitrogen, oxygen) improves the hardness of material, is still in the primary stage.Pure transition metal is due to higher valency
Electron density and with higher Bulk modulus, but its hardness but very little, such as the Bulk modulus of metal osmium (Os) although reaches
To 410 GPa or so, but its hardness but only has a thirtieth of diamond.Covalent bonding types of elements is introduced into transition
Strong directionality covalent bond can be produced in metal lattice, so that it resists plasticity and elastically-deformable ability is greatly carried
Height, obtains high hardness material, such as tungsten forms 3 times that its later hardness of tungsten carbide is simple metal tungsten with carbon.
The agglomerate body sintering of 5d transition metal nitrides and boride, is always that the huge of high hardness material the Exploring Road is chosen
War.Tantalum nitride has higher Bulk modulus and hardness as 5d transition metal nitrides, and the Sintering Problem of its agglomerate body is always
Annoying people.In order to obtain its bulk sintered body, we utilize the high-temperature and high-pressure conditions of domestic cubic hinge press, adopt simultaneously
With the pure phase sintering process without binding agent, high rigidity agglomerate body tantalum nitride hard alloy is prepared first.Experimentally again
Confirmation covalent bonding types of elements is introduced into transition metal lattice can produce strong directionality covalent bond, so as to improve it
Anti- plasticity and elastically-deformable feasibility.Preparation technology of the present invention is relatively easy, it is easy to industrialized production, and with than commercial carbon
Change the higher hardness of tungsten, by as a kind of new high rigidity, high intensity, the novel hard alloy of high tenacity and raw for industry
The fields such as production.
The content of the invention
It is an object of the invention to provide a kind of new tantalum nitride sintering cemented carbide block and preparation method thereof.The alloy block
Body only has a kind of composition-tantalum nitride, the present invention using domestic cubic apparatus large cavity press as agglomerating plant, in sintering process not
Any binding agent pure phase sintering is added, and obtains its bulk sintered body first.The hard alloy that the present invention is provided has notable special
Point：Crystallite dimension is small, the porosity is low, Stability Analysis of Structures, consistency high.The sintering cemented carbide block Vickers hardness that the present invention is provided
Up to 30GPa（Pressurize 15s Vickers hardness under 3 kilograms of loading forces）, the Talide sold with market（3 kilograms add
Vickers hardness is 17GPa under pressurize 15s Vickers hardness under load power）Compared to there is big advantage, existing commercialization is efficiently solved
The problem of tungsten carbide hardness toughness is not high.
The new tantalum nitride hard alloy and preparation method that the present invention is provided comprise the following steps：
The tantalum nitride powder of 1 pair of hexagonal structure or cubic structure is ground；
Tantalum nitride powder after 2 pairs of grindings carries out application of vacuum, and is pressed into cylindrical piece body in advance；
3 are put into the cylinder body being pre-pressed into high-pressure synthesis block；The high-pressure synthesis block assembled is placed in large cavity press
Synthesize and HTHP sintering is carried out in chamber, sintering pressure is not less than 1GPa；Generated time is no less than 1min；
Cooling release after 4 sintering are completed, removes inclusion enclave and takes out the tantalum nitride hard alloy that sintering is completed；
In above-mentioned technical scheme, high-temperature and high-pressure conditions preferentially take temperature control at 600-2200 DEG C, and Stress control is in 1-
8GPa, time control is finally controlled in 5-120min in 1-120min, soaking time；
The initial powder of tantalum nitride in such scheme, preferably hexagonal structure or cubic structure tantalum nitride are used as initial powder.
Under high-temperature and high-pressure conditions, tantalum nitride initial powder is from hexagonal structure to carbonization tungsten structure transformation, while sintering forms block.Separately
A kind of tantalum nitride powder direct sintering of cubic structure forms tantalum nitride cemented carbide sintered body together.
Tantalum nitride application of vacuum temperature is 1200 DEG C in such scheme, is incubated 2 hours, thoroughly removes nitridation tantalum surface
Oxide, gas etc..
Tantalum nitride powder can be blocking with precompressed in the above-mentioned technical solutions, can also be pressed into two pieces it is overlapping put together, and
It is put into high-pressure synthesis block.
The generation equipment of high-temperature and high-pressure conditions can be cubic hinge press, belt type press and four in the above-mentioned technical solutions
Face high pressure apparatus and other high-temperature high-pressure apparatuses.
In the above-mentioned technical solutions, described high-pressure synthesis block is configured to, what prefabricated block was either stacked alternately
Block is put into the graphite-pipe in pyrophillite assembling block, and two slice, thin pieces up and down of graphite-pipe are graphite flake, molybdenum sheet and conduction respectively
Steel ring, the preferred cubic apparatus large cavity press of described synthesis press.
It is ground in the original material of above-mentioned tantalum nitride, mainly makes the crystal grain refinement of original material, to obtain more
The tantalum nitride hard alloy of high rigidity.
In the above-mentioned technical solutions, it can add binding agent to reduce height in described tantalum nitride hard alloy sintering process
Temperature and pressure during being pressed into, is applicable industrialized production so as to more preferable, increases productivity.
The present invention is prepared based on tantalum nitride hexagonal structure to the phase transformation of carbonization tungsten structure or by Emission in Cubic direct sintering
Hard alloy.High purity silicon nitride tantalum powder is as original material, and pure phase is sintered without any binding agent, what the present invention was obtained
Hard alloy feature clearly, the features such as with high hardness high toughness.Tantalum nitride hard alloy prepared by the present invention is scanned
Electronic Speculum test analysis, sintering block crystallite dimension is in 1 microns, and stomata is few, and consistency is high, and crystallite dimension is small.The present invention can
To synthesize sintering under the conditions of relatively low temperature, pressure（Minimum sintering condition is pressure 1GPa, 600 DEG C of temperature）, prepare bar
Part is less than industrial production diamond synthesis and the synthesis condition of cubic boron nitride（1400 DEG C of temperature, 5.5GPa）Preparation condition is low to be passed
The equipment of the production diamond of system can just prepare tantalum nitride hard alloy, and simple to operate, sintered body hardness, can up to 30GPa
The hard alloy of agglomerate body high hardness high toughness is sintered, there is easy to spread and large-scale production.
Brief description of the drawings：
Fig. 1 represents that high-temperature and high-pressure conditions synthesize the XRD of tantalum nitride hard alloy.
Fig. 2 represents tantalum nitride hard alloy prepared by the present invention（Embodiment five）Scanning electron microscope (SEM) photograph.
Fig. 3 represents tantalum nitride hard alloy prepared by the present invention（Embodiment five）Hardness test result figure.
Fig. 4 represents tantalum nitride hard alloy prepared by the present invention（Embodiment five）Pictorial diagram
Embodiment：
Embodiment one：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put into vacuum
1000 DEG C -1600 DEG C of application of vacuum is carried out in stove, the tantalum nitride powder after application of vacuum is taken out, with mould by tantalum nitride precompressed
Into cylinder block, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, the upper and lower ends of graphite-pipe according to
Secondary assembling graphite flake, molybdenum sheet and conducting steel ring.Synthetic block is put into big press after assembling to synthesize in chamber, on 600 DEG C of left sides of temperature
The right side, pressure 1.2GPa or so, through the heat-insulation pressure keeping of 1-5 minutes, synthesis material is taken out after decrease temperature and pressure, material is tantalum nitride hard
Alloy.
Embodiment two：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put into
1000 DEG C -1600 DEG C of high-temperature vacuum processing is carried out in vacuum drying oven, the tantalum nitride powder after application of vacuum is taken out, with mould by nitrogen
Change tantalum and be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite in pyrophillite Synthetic block, above and below graphite-pipe
Two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1200 DEG C or so, pressure 2GPa or so through the heat-insulation pressure keeping of 30 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment three：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, powder after grinding is put into very
The high-temperature vacuum that 1000 DEG C -1600 DEG C are carried out in empty stove is handled, and takes out the tantalum nitride powder after application of vacuum, will be nitrogenized with mould
Tantalum is pressed into cylinder block in advance, and the cylinder block suppressed is put into the graphite in pyrophillite Synthetic block, and up and down the two of graphite-pipe
End assembles graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature 1200
DEG C or so, pressure 3GPa or so, through the heat-insulation pressure keeping of about 60 minutes, takes out synthesis material, material is tantalum nitride after decrease temperature and pressure
Hard alloy.
Example IV：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put into
1000 DEG C -1600 DEG C of high-temperature vacuum processing is carried out in vacuum drying oven, the tantalum nitride powder after application of vacuum is taken out, with mould by nitrogen
Change tantalum and be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite in pyrophillite Synthetic block, above and below graphite-pipe
Two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1400 DEG C, pressure about 5GPa through the heat-insulation pressure keeping of 20 minutes, takes out synthesis material, material is tantalum nitride hard after decrease temperature and pressure
Alloy.
Embodiment five：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, powder after grinding is put into very
The high-temperature vacuum that 1000 DEG C -1600 DEG C are carried out in empty stove is handled, and takes out the tantalum nitride powder after application of vacuum, will be nitrogenized with mould
Tantalum is pressed into cylinder block in advance, and the cylinder block suppressed is put into the graphite in pyrophillite Synthetic block, and up and down the two of graphite-pipe
End assembles graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature 1400
A DEG C left side, pressure 5.5GPa by the heat-insulation pressure keeping of 30 minutes, takes out synthesis material, material is tantalum nitride hard after decrease temperature and pressure
Alloy.
Embodiment six：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put into
1000 DEG C -1600 DEG C of application of vacuum is carried out in vacuum drying oven, the tantalum nitride powder after application of vacuum is taken out, with mould by tantalum nitride
Cylinder block is pressed into advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, up and down the two of graphite-pipe
End assembles graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature 1400
DEG C, pressure 2GPa or so through the heat-insulation pressure keeping of 30 minutes, takes out synthesis material, material closes for tantalum nitride hard after decrease temperature and pressure
Gold.
Embodiment seven：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put into
1000 DEG C -1600 DEG C of application of vacuum is carried out in vacuum drying oven, the tantalum nitride powder after application of vacuum is taken out, with mould by tantalum nitride
Cylinder block is pressed into advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, up and down the two of graphite-pipe
End assembles graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature 1400
DEG C, pressure about 3GPa or so through the heat-insulation pressure keeping of 60 minutes, takes out synthesis material, material is tantalum nitride hard after decrease temperature and pressure
Alloy.
Embodiment eight：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put into
1000 DEG C -1600 DEG C of application of vacuum is carried out in vacuum drying oven, the tantalum nitride powder after application of vacuum is taken out, with mould by tantalum nitride
Cylinder block is pressed into advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, up and down the two of graphite-pipe
End assembles graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature 1400
DEG C, pressure 5GPa or so through the heat-insulation pressure keeping of 10 minutes, takes out synthesis material, material closes for tantalum nitride hard after decrease temperature and pressure
Gold.
Embodiment nine：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put into
1000 DEG C -1600 DEG C of application of vacuum is carried out in vacuum drying oven, the tantalum nitride powder after application of vacuum is taken out, with mould by tantalum nitride
Cylinder block is pressed into advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, up and down the two of graphite-pipe
End assembles graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature 1400
DEG C or so, pressure 5GPa or so through the heat-insulation pressure keeping of 15 minutes, takes out synthesis material, material is that tantalum nitride is hard after decrease temperature and pressure
Matter alloy.
Embodiment ten：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put into
1000 DEG C -1600 DEG C of application of vacuum is carried out in vacuum drying oven, the tantalum nitride powder after application of vacuum is taken out, with mould by tantalum nitride
Cylinder block is pressed into advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, up and down the two of graphite-pipe
End assembles graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature 1400
DEG C or so, pressure 5GPa or so through the heat-insulation pressure keeping of 30 minutes, takes out synthesis material, material is that tantalum nitride is hard after decrease temperature and pressure
Matter alloy.
Embodiment ten：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put into
1000 DEG C -1600 DEG C of application of vacuum is carried out in vacuum drying oven, the tantalum nitride powder after application of vacuum is taken out, with mould by tantalum nitride
Cylinder block is pressed into advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, up and down the two of graphite-pipe
End assembles graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature 1400
DEG C or so, pressure 5GPa or so through the heat-insulation pressure keeping of 40 minutes, takes out synthesis material, material is that tantalum nitride is hard after decrease temperature and pressure
Matter alloy.
Embodiment 11：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put
Enter the application of vacuum of 1000 DEG C -1600 DEG C of progress in vacuum drying oven, take out the tantalum nitride powder after application of vacuum, will be nitrogenized with mould
Tantalum is pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, above and below graphite-pipe
Two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1400 DEG C or so, pressure 5GPa or so through the heat-insulation pressure keeping of 50 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 12：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put
Enter the application of vacuum of 1000 DEG C -1600 DEG C of progress in vacuum drying oven, take out the tantalum nitride powder after application of vacuum, will be nitrogenized with mould
Tantalum is pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, above and below graphite-pipe
Two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1400 DEG C or so, pressure 5GPa or so through the heat-insulation pressure keeping of 60 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 13：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put
Enter the application of vacuum of 1000 DEG C -1600 DEG C of progress in vacuum drying oven, take out the tantalum nitride powder after application of vacuum, will be nitrogenized with mould
Tantalum is pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, above and below graphite-pipe
Two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1400 DEG C or so, pressure 5GPa or so through the heat-insulation pressure keeping of 80 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 14：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put
Enter the application of vacuum of 1000 DEG C -1600 DEG C of progress in vacuum drying oven, take out the tantalum nitride powder after application of vacuum, will be nitrogenized with mould
Tantalum is pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, above and below graphite-pipe
Two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1600 DEG C or so, pressure 5GPa or so through the heat-insulation pressure keeping of 10 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 15：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put
Enter the application of vacuum of 1000 DEG C -1600 DEG C of progress in vacuum drying oven, take out the tantalum nitride powder after application of vacuum, will be nitrogenized with mould
Tantalum is pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, above and below graphite-pipe
Two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1600 DEG C or so, pressure 5GPa or so through the heat-insulation pressure keeping of 20 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 16：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put
Enter the application of vacuum of 1000 DEG C -1600 DEG C of progress in vacuum drying oven, take out the tantalum nitride powder after application of vacuum, will be nitrogenized with mould
Tantalum is pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, above and below graphite-pipe
Two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1600 DEG C or so, pressure 5GPa or so through the heat-insulation pressure keeping of 40 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 17：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put
Enter the application of vacuum of 1000 DEG C -1600 DEG C of progress in vacuum drying oven, take out the tantalum nitride powder after application of vacuum, will be nitrogenized with mould
Tantalum is pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, above and below graphite-pipe
Two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1600 DEG C or so, pressure 5GPa or so through the heat-insulation pressure keeping of 50 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 18：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put
Enter the application of vacuum of 1000 DEG C -1600 DEG C of progress in vacuum drying oven, take out the tantalum nitride powder after application of vacuum, will be nitrogenized with mould
Tantalum is pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, above and below graphite-pipe
Two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1600 DEG C or so, pressure 5GPa or so through the heat-insulation pressure keeping of 60 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 19：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put
Enter the application of vacuum of 1000 DEG C -1600 DEG C of progress in vacuum drying oven, take out the tantalum nitride powder after application of vacuum, will be nitrogenized with mould
Tantalum is pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, above and below graphite-pipe
Two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1600 DEG C or so, pressure 5GPa or so through the heat-insulation pressure keeping of 80 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 20：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put
Enter the application of vacuum of 1000 DEG C -1600 DEG C of progress in vacuum drying oven, take out the tantalum nitride powder after application of vacuum, will be nitrogenized with mould
Tantalum is pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, above and below graphite-pipe
Two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1600 DEG C or so, pressure 5.5GPa or so, through the heat-insulation pressure keeping of 10 minutes, takes out synthesis material, material is nitrogen after decrease temperature and pressure
Change tantalum hard alloy.Embodiment 21：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, after grinding
Powder be put into vacuum drying oven and carry out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, use mould
Tantalum nitride is pressed into cylinder block by tool in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite
The upper and lower ends of pipe assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber,
In 1600 DEG C or so of temperature, pressure 5.5GPa or so, through the heat-insulation pressure keeping of 20 minutes, takes out synthesis material, thing after decrease temperature and pressure
Expect for tantalum nitride hard alloy.
Embodiment 22：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1600 DEG C or so, pressure 5.5GPa or so, through the heat-insulation pressure keeping of 30 minutes, takes out synthesis material, material is nitrogen after decrease temperature and pressure
Change tantalum hard alloy.
Embodiment 23：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1600 DEG C or so, pressure 5.5GPa or so, through the heat-insulation pressure keeping of 40 minutes, takes out synthesis material, material is nitrogen after decrease temperature and pressure
Change tantalum hard alloy.
Embodiment 24：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1600 DEG C or so, pressure 5.5GPa or so, through the heat-insulation pressure keeping of 50 minutes, takes out synthesis material, material is nitrogen after decrease temperature and pressure
Change tantalum hard alloy.
Embodiment 25：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1600 DEG C or so, pressure 5.5GPa or so, through the heat-insulation pressure keeping of 60 minutes, takes out synthesis material, material is nitrogen after decrease temperature and pressure
Change tantalum hard alloy.
Embodiment 26：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1200 DEG C or so, pressure 3GPa or so through the heat-insulation pressure keeping of 10 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 27：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1200 DEG C or so, pressure 3GPa or so through the heat-insulation pressure keeping of 20 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 28：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1200 DEG C or so, pressure 3GPa or so through the heat-insulation pressure keeping of 30 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 29：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1200 DEG C or so, pressure 3GPa or so through the heat-insulation pressure keeping of 40 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 30：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put
Enter the application of vacuum of 1000 DEG C -1600 DEG C of progress in vacuum drying oven, take out the tantalum nitride powder after application of vacuum, will be nitrogenized with mould
Tantalum is pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, above and below graphite-pipe
Two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1200 DEG C or so, pressure 3GPa or so through the heat-insulation pressure keeping of 50 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 31：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1400 DEG C or so, pressure 3GPa or so through the heat-insulation pressure keeping of 10 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 32：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1400 DEG C or so, pressure 3GPa or so through the heat-insulation pressure keeping of 20 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 33：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1400 DEG C or so, pressure 3GPa or so through the heat-insulation pressure keeping of 30 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 34：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1400 DEG C or so, pressure 3GPa or so through the heat-insulation pressure keeping of 40 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 35：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1400 DEG C or so, pressure 3GPa or so through the heat-insulation pressure keeping of 50 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 36：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1600 DEG C or so, pressure 3GPa or so through the heat-insulation pressure keeping of 10 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 37：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1600 DEG C or so, pressure 3GPa or so through the heat-insulation pressure keeping of 20 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 38：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1600 DEG C or so, pressure 3GPa or so through the heat-insulation pressure keeping of 30 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 39：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1600 DEG C or so, pressure 3GPa or so through the heat-insulation pressure keeping of 40 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Example IV ten：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put
Enter the application of vacuum of 1000 DEG C -1600 DEG C of progress in vacuum drying oven, take out the tantalum nitride powder after application of vacuum, will be nitrogenized with mould
Tantalum is pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, above and below graphite-pipe
Two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1600 DEG C or so, pressure 3GPa or so through the heat-insulation pressure keeping of 50 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Example IV 11：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1600 DEG C or so, pressure 2GPa or so through the heat-insulation pressure keeping of 10 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Example IV 12：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1800 DEG C or so, pressure 2GPa or so through the heat-insulation pressure keeping of 10 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Example IV 13：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1800 DEG C or so, pressure 5GPa or so through the heat-insulation pressure keeping of 10 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Example IV 14：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1800 DEG C or so, pressure 5GPa or so through the heat-insulation pressure keeping of 40 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Example IV 15：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1800 DEG C or so, pressure 5GPa or so through the heat-insulation pressure keeping of 10 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Example IV 16：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1800 DEG C or so, pressure 8GPa or so, through the heat-insulation pressure keeping of 5 minutes, takes out synthesis material, material is tantalum nitride after decrease temperature and pressure
Hard alloy.
Example IV 17：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1800 DEG C or so, pressure 4GPa or so through the heat-insulation pressure keeping of 10 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Example IV 18：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1800 DEG C or so, pressure 2.5GPa or so, through the heat-insulation pressure keeping of 30 minutes, takes out synthesis material, material is nitrogen after decrease temperature and pressure
Change tantalum hard alloy.
Example IV 19：The tantalum nitride powder of hexagonal structure or cubic structure is taken to be ground, by the powder after grinding
It is put into vacuum drying oven and carries out 1000 DEG C -1600 DEG C of application of vacuum, take out the tantalum nitride powder after application of vacuum, with mould by nitrogen
Change tantalum be pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, graphite-pipe it is upper
Lower two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
1000 DEG C or so, pressure 5GPa or so through the heat-insulation pressure keeping of 50 minutes, takes out synthesis material, material is nitridation after decrease temperature and pressure
Tantalum hard alloy.
Embodiment 50：Take the tantalum nitride powder of hexagonal structure or cubic structure to be ground, the powder after grinding is put
Enter the application of vacuum of 1000 DEG C -1600 DEG C of progress in vacuum drying oven, take out the tantalum nitride powder after application of vacuum, will be nitrogenized with mould
Tantalum is pressed into cylinder block in advance, the cylinder block suppressed is put into the graphite-pipe in pyrophillite Synthetic block, above and below graphite-pipe
Two ends assemble graphite flake, molybdenum sheet and conducting steel ring successively.Synthetic block is put into big press after assembling to synthesize in chamber, in temperature
800 DEG C or so, pressure 5GPa or so, through the heat-insulation pressure keeping of 30 minutes, takes out synthesis material, material is tantalum nitride after decrease temperature and pressure
Hard alloy.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God and any modification made within principle, equivalent substitution and improvement etc., should be included in the scope of the protection.
Claims (6)
1. a kind of new tantalum nitride hard alloy, it is characterised in that：Its composition is the tantalum nitride of six sides or cubic structure.
2. a kind of new tantalum nitride hard alloy according to claim 1, it is characterised in that：It is described to prepare tantalum nitride hard
Alloy sintering block original material composition is the tantalum nitride of hexagonal structure or cubic structure.
3. a kind of new tantalum nitride hard alloy according to claim 1, it is characterised in that：The initial material of described tantalum nitride
Expect for powder, particle or block etc..
4. the preparation method of the new tantalum nitride hard alloy according to claim 1-3, its character is：Described
Tantalum nitride hard alloy prepares the pure phase sintering process using binder free, including following steps：
（1）Hexagonal structure or cubic structure tantalum nitride powder are ground；
（2）High-temperature vacuum processing is carried out to the tantalum nitride powder after grinding, and is pressed into cylinder in advance；
（3）The cylinder being pressed into is put into high-pressure synthesis block；
（4）The high-pressure synthesis block assembled is placed in press synthesis chamber and carries out HTHP sintering, sintering pressure is not less than
1GPa, generated time is no less than 1min；
（5）Cooling release removes inclusion enclave after sintering is completed, you can obtain tantalum nitride sintering cemented carbide described in claim 1
Block.
5. new tantalum nitride hard alloy preparation method according to claim 4, it is characterised in that：Described tantalum nitride is hard
Matter alloy preparation condition is：600-2200 DEG C of temperature, pressure 1-20GPa, soaking time 1-120 minutes.
6. new tantalum nitride hard alloy preparation method according to claim 4, it is characterised in that：Described press is six
Face high pressure apparatus, belt type press, four sides high pressure apparatus and the equipment with high-temperature and high-pressure conditions.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108358645A (en) * | 2018-05-03 | 2018-08-03 | 四川大学 | A method of preparing high-compactness hafnium boride ceramics |
| CN113025288A (en) * | 2021-03-03 | 2021-06-25 | 深圳大学 | Application of high-thermal-conductivity material in equipment heat management and brake pad |
| CN114790112A (en) * | 2021-01-26 | 2022-07-26 | 四川大学 | High-hardness and high-heat-stability tantalum nitride block prepared based on domestic cubic press |
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| CN103691363A (en) * | 2013-12-10 | 2014-04-02 | 太原理工大学 | Synthesis method of cubic boron nitride polycrystalline particles |
| CN103924145A (en) * | 2014-04-30 | 2014-07-16 | 西安奥奈特固体润滑工程学研究有限公司 | Non-binding-phase carboloy metal and preparation method thereof |
| CN105264103A (en) * | 2013-05-31 | 2016-01-20 | 山特维克知识产权股份有限公司 | New process of manufacturing cemented carbide and a product obtained thereof |
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| JPH06305732A (en) * | 1993-04-27 | 1994-11-01 | Toshiba Tungaloy Co Ltd | Wc type tantalum nitride and method for synthesizing the same |
| CN105264103A (en) * | 2013-05-31 | 2016-01-20 | 山特维克知识产权股份有限公司 | New process of manufacturing cemented carbide and a product obtained thereof |
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| CN108358645A (en) * | 2018-05-03 | 2018-08-03 | 四川大学 | A method of preparing high-compactness hafnium boride ceramics |
| CN108358645B (en) * | 2018-05-03 | 2021-06-25 | 四川大学 | Method for preparing high-density hafnium diboride ceramic |
| CN114790112A (en) * | 2021-01-26 | 2022-07-26 | 四川大学 | High-hardness and high-heat-stability tantalum nitride block prepared based on domestic cubic press |
| CN113025288A (en) * | 2021-03-03 | 2021-06-25 | 深圳大学 | Application of high-thermal-conductivity material in equipment heat management and brake pad |
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