CN104674098A - Cermet material based on TiCN-(Ti,M)CN core mixed structure and preparation method thereof - Google Patents
Cermet material based on TiCN-(Ti,M)CN core mixed structure and preparation method thereof Download PDFInfo
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Abstract
The invention provides a cermet material based on a TiCN-(Ti,M)CN core mixed structure. The cermet material comprises a black core-bright inner ring-grey outer ring structure, a grey core-bright inner ring-grey outer ring structure, a bright core structure and Co or/and Ni adhesive phases, wherein in the black core-bright inner ring-grey outer ring structure, a black core is formed by TiCN; a bright inner ring and a grey outer ring are formed by (Ti,M)CN solid solutions; in the grey core-bright inner ring-grey outer ring structure, a grey core, a bright inner ring and a grey outer ring are formed by (Ti,M)CN solid solutions; the bright core structure is formed by a Co solid solution for dissolving M or/and a Ni solid solution for dissolving M; the M contents of the solid solutions for forming a bright core are more than the M content of the solid solution for forming the bright inner ring; the M content of the solid solution for forming the bright inner ring is more than the M content of the solid solution for forming the grey outer ring; and the M content of the solid solution for forming the grey outer ring is more than the M content of the solid solution for forming the grey core. The invention also provides a preparation method of the material. The toughness and hardness of the cermet material based on the TiCN-(Ti,M)CN core mixed structure are simultaneously improved.
Description
Technical field
The invention belongs to sintering metal field, be specifically related to a kind of carbon nitridation titanium ceramet and preparation method thereof.
Background technology
Ti (C, N) based ceramic metal has good red hardness, anti-crescent hollow abrasion ability and cheap for manufacturing cost, and substantially reduce the number the use of strategic resource W, be one of best substitute of WC-Co series hard metal, thus become the stupalith that major industrial country in the world all attaches great importance to.Although by means such as process optimization, modification, second-phase strength, the intensity of Ti (C, N) based ceramic metal, hardness, toughness all improve, and the toughness of commercial Ti (C, N) based ceramic metal also only has 6 ~ 9MPam
1/2, can not show a candle to the toughness (9 ~ 16MPam of traditional WC-Co hard alloy
1/2).Therefore the toughness how improving Ti (C, N) based ceramic metal has become the problem of countries in the world material supplier author's extensive concern and research.
The people such as Central South University professor Zhang Li add WC, Mo by compound
2c, Cr
3c
2, TaC sinters, obtaining toughness can reach 12.616MPam
1/2ti (C, N) sintering metal, but its hardness drops to about 1400MPa.Application number is 200510090485.9 application discloses " solid solution powder, pottery, metal ceramic powder, sintering metal and preparation method ", utilize (the Ti of synthesis, W, Mo ...) (C, N) solid-solution powder compacting sintering, obtaining fracture toughness property is 12 ~ 13MPam
1/2the TiCN based ceramic metal of centreless ring, but its hardness is only 11 ~ 12Gpa, far below the firmness level of commercial Ti (C, N) based ceramic metal 14 ~ 17GPa.People (the Effect of secondary carbides addition on the microstructure and mechanical properties of (Ti such as naval more than Sichuan University, W, Mo, V) (C, N)-based cermets.Int.Journal of Refractory metals and Hard Materials, 2011 (29): 586-590) with (Ti, W, Mo ...) (C, N) solid solution powder is base, by adding carbide, formed grey core ash ring and bright core ash ring structure to improve the performance of material, though the hardness of material can be made to reach about 1650MPa, but toughness declines obviously, 10MPam can only be reached
1/2.
In sum, prior art can not take into account toughness and hardness in the lifting of Ti (C, N) based ceramic metal performance, and two kinds of performances can not promote simultaneously, because which limit this type of ceramic-metallic application.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, provide a kind of based on TiCN-(Ti, M) CN cermet material mixing cored structure and preparation method thereof, to improve its toughness and hardness simultaneously.
Of the present invention based on TiCN-(Ti, M) CN mixes the cermet material of cored structure, this cermet material is by black core bright inner ring ash outer ring structure, ash core bright inner ring ash outer ring structure, bright cored structure and Co are or/and the bonding phase composite of Ni, in described black core bright inner ring ash outer ring structure, black core is formed by TiCN, bright inner ring, ash outer shroud is by (Ti, M) CN sosoloid is formed, in described grey core bright inner ring ash outer ring structure, ash core, bright inner ring, ash outer shroud is by (Ti, M) CN sosoloid is formed, described bright cored structure is by dissolving the Co sosoloid of M or/and the Ni sosoloid dissolving M is formed, the M content > that the M content > that the M content > forming the sosoloid of bright core forms the sosoloid of bright inner ring forms the sosoloid of grey outer shroud forms the M content of the sosoloid of grey core, described M is W, Mo, V, Cr, Ta, at least one in Nb.
The preparation method mixing the cermet material of cored structure based on TiCN-(Ti, M) CN of the present invention, the component of raw material and the mass percent of each component are:
Co powder or/and Ni powder 10 ~ 20%,
Equations of The Second Kind carbide powder 0.5 ~ 20%,
TiCN-(Ti, M) CN powder mix 60 ~ 89.5%,
Described M is at least one in W, Mo, V, Cr, Ta, Nb, and described Equations of The Second Kind carbide powder is WC powder, Mo
2c powder, Cr
3c
2powder, TaC powder, NbC powder, V
xat least one in C powder, V
xin C, 0 < x≤1;
Processing step is as follows:
(1) batch mixing and granulation
Measure each raw material by the mass percent of above-mentioned raw materials, then the raw material measured is carried out successively wet ball grinding, vacuum-drying, interpolation forming agent and mix, granulation, formed granular mixture;
(2) shaping
Pellet step (1) prepared loads the die cavity of mould, is pressed into base sample;
(3) low pressure sintering
The base sample prepared in step (2) is come unstuck 4 ~ 8 hours at vacuum tightness 0.1 ~ 1Pa, at 350 ~ 600 DEG C, then with ramp to 1200 ~ 1350 of 4 ~ 8 DEG C/min DEG C sintering 1 ~ 2h, after sintering time expires, with 5 ~ 10 DEG C/min ramp to 1420 ~ 1500 DEG C insulation 1 ~ 2h, after soaking time expires, pass into argon gas at such a temperature and be incubated 0.5 ~ 1h to 0.5MPa ~ 6MPa and in argon atmosphere, continue after cool to room temperature with the furnace, namely the sintering metal that TiCN-(Ti, M) CN mixes cored structure is obtained.
In aforesaid method, in TiCN-(Ti, M) CN powder mix, the mass percent of (Ti, M) CN powder is the mass percent of 20% ~ 80%, TiCN powder is 20% ~ 80%.
In aforesaid method, in (Ti, M) CN powder C atomicity account for C, atom N sum 30% ~ 70%, the quality of M element account for Ti, M element quality sum 15% ~ 35.5%.
In aforesaid method, the operation of described wet ball grinding is: load in ball mill by the raw material measured, then abrading-ball and alcohol or acetone is added, ball milling obtains mixing wet feed for 30 ~ 90 hours, described abrading-ball is (4 ~ 10) by ball material mass ratio: 1 adds, and described alcohol or acetone add by every gram of raw material 6 ~ 10ml; Described vacuum-drying is that the mixing wet feed that obtained by wet ball grinding is under vacuum in 60 ~ 80 DEG C of dryings 12 ~ 24 hours.
In aforesaid method, described forming agent is the one in polyoxyethylene glycol, paraffin, SD glue, and the add-on of forming agent is 0.5 ~ 3% of vacuum-drying gained mixed powder quality.Described forming agent adds to after being dissolved in alcohol or gasoline in dried mixed powder again, and described alcohol or gasoline consumption are limited can dissolve forming agent and can meet granulation demand.
Compared with prior art, the present invention has following beneficial effect:
1, the cermet material mixing cored structure based on TiCN-(Ti, M) CN provided by the present invention, for TiCN base metal-ceramic material adds novel type, simultaneously for the research of TiCN based ceramic metal provides new direction.
2, the inventive method is with TiCN-(Ti, M) CN mixed powder is main body, by adding Equations of The Second Kind carbide, multiple core, ring is formed in sintering process, gained sintering metal is mixed cored structure, has both retained the ceramic-metallic hardness of conventional core ring structure TiCN, and has had again the ceramic-metallic high tenacity of pure Weak core ring structured TiCN, therefore simultaneously and significantly improve the ceramic-metallic toughness of TiCN and hardness, there is good comprehensive mechanical property.The sintering metal hardness of gained is 1550 ~ 1689HV
30, fracture toughness property is 10.4 ~ 13.8MPam
1/2, bending strength is 1566 ~ 2045MPa.
3, the present invention is by regulating TiCN and (Ti, M) mass ratio of CN, effectively can realize different sorts core ring proportion, thus realize TiCN-(Ti, M) CN mixes the controllable adjustment of the sintering metal mechanical property of cored structure, for the match selection of sintering metal and Working environment provides a kind of new approach.
4, the inventive method technique is simple, and equipment requirements is low, is suitable for industrialized mass production.
Accompanying drawing explanation
Fig. 1 be prepared by embodiment 1 based on 20TiCN-80 (Ti, 15W, 5Mo, 0.2V) (C
0.5n
0.5) scanning electron microscope (SEM) photograph of mixed cored structure cermet material.
In figure, 1-grey core bright inner ring ash outer ring structure, 1-1-grey outer shroud, 1-2-bright inner ring, 1-3-grey core, 2-bright core, 3-bonding phase, 4-evil mind bright inner ring ash outer ring structure, 4-1-grey outer shroud, 4-2-bright inner ring, 4-3-black core.
Embodiment
Be described further based on TiCN-(Ti, M) CN cermet material mixing cored structure and preparation method thereof of the present invention below by embodiment.
In following examples, TiCN-(Ti, M) (C, N) numeral in before Ti, M element represents that it accounts for the per-cent of Ti and M element quality summation respectively, and the numeral of C, N element subscript represents that its atom number accounts for the per-cent of C, atom N number summation respectively, TiCN and (Ti, M) (C, N) front numeral represents its mass percent shared in TiCN-(Ti, M) (C, N) mixed powder respectively.Such as 40TiCN-60 (Ti, 15W, 5Mo, 0.2V) (C
0.5n
0.5) represent Ti, W, Mo, V element mass ratio be 79.8:15:5:0.2, C, atom N number accounts for 40% of mixed powder quality than for 0.5:0.5, TiCN; (Ti, 15W, 5Mo, 0.2V) (C
0.5n
0.5) account for 60% of mixed powder quality.
In following examples, the preparation method of (Ti, M) CN solid-solution powder, reference literature: Yongzhong Jin, Ying Liu, Yankun Wang, JinWen Ye; Synthesis of (Ti, W, Mo, V) (C, N) nanocomposite powder from novel precursors; Int.Journal of Refractory Metals & Hard Materials, 2010 (28): 541-543.
Embodiment 1
Based on 20TiCN-80 (Ti, 15W, 5Mo, 0.2V) (C described in the present embodiment
0.5n
0.5) preparation method of cermet material of mixed cored structure, the component of raw material and the mass percent of each component are:
Processing step is as follows:
(1) batch mixing and granulation
Each raw material is measured by the mass percent of above-mentioned raw materials, the raw material measured is loaded Ф 10mm to be had in the urethane grinding jar of YG8 sintered carbide ball, add 1L alcohol, under rotational speed of ball-mill is 24r/min, ball milling obtains mixing wet feed for 90 hours, described YG8 sintered carbide ball is that 8:1 adds by ball material mass ratio, by the vacuum-drying 16 hours at 70 DEG C of gained mixing wet feed after ball milling terminates, then polyoxyethylene glycol-the spirituous solution adding its quality 2.5% in vacuum-drying gained mixed powder carries out mixing glue and granulates, and forms granular mixture;
(2) shaping
Pellet step (1) prepared loads in the die cavity of mould to be suppressed 9 seconds under 120MPa, is pressed into base sample;
(3) low pressure sintering
The base sample prepared in step (2) is put into vacuum degumming stove and carries out degumming process, be evacuated to 1Pa, come unstuck 8 hours at 350 DEG C, then the base sample after degumming process is put into low-pressure sintering furnace, with the ramp to 1200 of 4 DEG C/min DEG C sintering 1h, after sintering time expires, with 5 DEG C/min ramp to 1440 DEG C insulation 2h, soaking time at the expiration after, pass into argon gas at such a temperature to 2MPa and be incubated 0.5h in argon atmosphere, continue after cool to room temperature with the furnace, namely 20TiCN-80 (Ti is obtained, 15W, 5Mo, 0.2V) (C
0.5n
0.5) sintering metal of mixed cored structure.
The ceramic-metallic scanning electron microscope (SEM) photograph of gained is shown in Fig. 1, as seen from the figure, which form multiple core, ring, is mixed cored structure.After tested, its hardness is 1605HV
30, fracture toughness property is 13.6MPam
1/2, bending strength is 2045MPa.
Embodiment 2
Based on 50TiCN-50 (Ti, 20W, 15Ta, 0.2V) (C described in the present embodiment
0.7n
0.3) preparation method of cermet material of mixed cored structure, the component of raw material and the mass percent of each component are:
Processing step is as follows:
(1) batch mixing and granulation
Each raw material is measured by the mass percent of above-mentioned raw materials, the raw material measured is loaded Ф 10mm to be had in the urethane grinding jar of YG8 sintered carbide ball, add 800mL alcohol, under rotational speed of ball-mill is 24r/min, ball milling obtains mixing wet feed for 72 hours, described YG8 sintered carbide ball is that 8:1 adds by ball material mass ratio, by the vacuum-drying 18 hours at 70 DEG C of gained mixing wet feed after ball milling terminates, then polyoxyethylene glycol-the spirituous solution adding its quality 0.5% in vacuum-drying gained mixed powder carries out mixing glue and granulates, and forms granular mixture;
(2) shaping
Pellet step (1) prepared loads in the die cavity of mould to be suppressed 9 seconds under 120MPa, is pressed into base sample;
(3) low pressure sintering
The base sample prepared in step (2) is put into vacuum degumming stove and carries out degumming process, be evacuated to 1 × 10
-1pa, comes unstuck 4 hours at 600 DEG C, then the base sample after degumming process is put into low-pressure sintering furnace, with the ramp to 1350 of 8 DEG C/min DEG C sintering 1h, after sintering time expires, with 10 DEG C/min ramp to 1500 DEG C insulation 1h, after soaking time expires, to pass into argon gas at such a temperature to 4MPa is incubated 40min in argon atmosphere, continue after cool to room temperature with the furnace, namely obtain 50TiCN-50 (Ti, 20W, 15Ta, 0.2V) (C
0.7n
0.3) sintering metal of mixed cored structure, after tested, its hardness is 1689HV
30, fracture toughness property is 11.2MPam
1/2, bending strength is 1870MPa.In different tissues, a metal element content is in table 1.
Table 1
Embodiment 3
Based on 40TiCN-60 (Ti, 20W, 5Ta, 0.5Nb) (C described in the present embodiment
0.7n
0.3) preparation method of cermet material of mixed cored structure, the component of raw material and the mass percent of each component are:
Processing step is as follows:
(1) batch mixing and granulation
Each raw material is measured by the mass percent of above-mentioned raw materials, the raw material measured is loaded Ф 10mm to be had in the urethane grinding jar of YG8 sintered carbide ball, add 800mL alcohol, under rotational speed of ball-mill is 24r/min, ball milling obtains mixing wet feed for 72 hours, described YG8 sintered carbide ball is that 10:1 adds by ball material mass ratio, by the vacuum-drying 24 hours at 60 DEG C of gained mixing wet feed after ball milling terminates, then the SD glue adding its quality 2% in vacuum-drying gained mixed powder carries out mixing glue and granulates, and forms granular mixture;
(2) shaping
Pellet step (1) prepared loads in the die cavity of mould to be suppressed 9 seconds under 120MPa, is pressed into base sample;
(3) low pressure sintering
The base sample prepared in step (2) is put into vacuum degumming stove and carries out degumming process, be evacuated to 1 × 10
-1pa, comes unstuck 6 hours at 500 DEG C, then the base sample after degumming process is put into low-pressure sintering furnace, with the ramp to 1300 of 6 DEG C/min DEG C sintering 1h, after sintering time expires, with 9 DEG C/min ramp to 1420 DEG C insulation 2h, after soaking time expires, to pass into argon gas at such a temperature to 2MPa is incubated 1h in argon atmosphere, continue after cool to room temperature with the furnace, namely obtain 40TiCN-60 (Ti, 20W, 5Ta, 0.5Nb) (C
0.7n
0.3) sintering metal of mixed cored structure, after tested, its hardness is 1669HV
30, fracture toughness property is 11.8MPam
1/2, bending strength is 1785MPa.
Embodiment 4
Based on 80TiCN-20 (Ti, 10W, 5Mo, 0.2Cr) (C described in the present embodiment
0.3n
0.7) preparation method of cermet material of mixed cored structure, the component of raw material and the mass percent of each component are:
Ni powder 10%,
WC powder 0.5%,
80TiCN-20 (Ti, 10W, 5Mo, 0.2Cr) (C
0.3n
0.7) powder mix 89.5%,
Processing step is as follows:
(1) batch mixing and granulation
Each raw material is measured by the mass percent of above-mentioned raw materials, the raw material measured is loaded Ф 10mm to be had in the urethane grinding jar of YG8 sintered carbide ball, add 600mL alcohol, under rotational speed of ball-mill is 24r/min, ball milling obtains mixing wet feed for 48 hours, described YG8 sintered carbide ball is that 4:1 adds by ball material mass ratio, by the vacuum-drying 12 hours at 80 DEG C of gained mixing wet feed after ball milling terminates, then polyoxyethylene glycol-the spirituous solution adding its quality 3% in vacuum-drying gained mixed powder carries out mixing glue and granulates, and forms granular mixture;
(2) shaping
Pellet step (1) prepared loads in the die cavity of mould to be suppressed 9 seconds under 120MPa, is pressed into base sample;
(3) low pressure sintering
The base sample prepared in step (2) is put into vacuum degumming stove and carries out degumming process, be evacuated to 1 × 10
0pa, comes unstuck 7 hours at 400 DEG C, then the base sample after degumming process is put into low-pressure sintering furnace, with the ramp to 1320 of 5 DEG C/min DEG C sintering 1h, after sintering time expires, with 6 DEG C/min ramp to 1480 DEG C insulation 1.5h, after soaking time expires, to pass into argon gas at such a temperature to 0.5MPa is incubated 1h in argon atmosphere, continue after cool to room temperature with the furnace, namely obtain 80TiCN-20 (Ti, 10W, 5Mo, 0.2Cr) (C
0.3n
0.7) sintering metal of mixed cored structure, after tested, its hardness is 1670HV
30, fracture toughness property is 10.4MPam
1/2, bending strength is 1566MPa.
Embodiment 5
Based on 50TiCN-50 (Ti, 15W, 5Mo, 0.2V) (C described in the present embodiment
0.7n
0.3) preparation method of cermet material of mixed cored structure, the component of raw material and the mass percent of each component are:
Processing step is as follows:
(1) batch mixing and granulation
Each raw material is measured by the mass percent of above-mentioned raw materials, the raw material measured is loaded Ф 10mm to be had in the urethane grinding jar of YG8 sintered carbide ball, add 1L acetone, under rotational speed of ball-mill is 24r/min, ball milling obtains mixing wet feed for 72 hours, described YG8 sintered carbide ball is that 9:1 adds by ball material mass ratio, by the vacuum-drying 24 hours at 60 DEG C of gained mixing wet feed after ball milling terminates, then paraffin-the gasoline solution adding its quality 3% in vacuum-drying gained mixed powder carries out mixing glue granulation, forms granular mixture;
(2) shaping
Pellet step (1) prepared loads in the die cavity of mould to be suppressed 9 seconds under 120MPa, is pressed into base sample;
(3) low pressure sintering
The base sample prepared in step (2) is put into vacuum degumming stove and carries out degumming process, be evacuated to 1 × 10
0pa, comes unstuck 5 hours at 550 DEG C, then the base sample after degumming process is put into low-pressure sintering furnace, with the ramp to 1270 of 5 DEG C/min DEG C sintering 1.5h, after sintering time expires, with 6 DEG C/min ramp to 1470 DEG C insulation 1.5h, after soaking time expires, to pass into argon gas at such a temperature to 5MPa is incubated 40min in argon atmosphere, continue after cool to room temperature with the furnace, namely obtain 50TiCN-50 (Ti, 15W, 5Mo, 0.2V) (C
0.7n
0.3) sintering metal of mixed cored structure, after tested, its hardness is 1654HV
30, fracture toughness property is 12.6MPam
1/2, bending strength is 1987MPa.
Embodiment 6
Based on 30TiCN-70 (Ti, 10W, 5Mo, 5Cr, 0.2Nb) (C described in the present embodiment
0.5n
0.5) preparation method of cermet material of mixed cored structure, the component of raw material and the mass percent of each component are:
Processing step is as follows:
(1) batch mixing and granulation
Each raw material is measured by the mass percent of above-mentioned raw materials, the raw material measured is loaded Ф 10mm to be had in the urethane grinding jar of YG8 sintered carbide ball, add 1L alcohol, under rotational speed of ball-mill is 24r/min, ball milling obtains mixing wet feed for 30 hours, described YG8 sintered carbide ball is that 10:1 adds by ball material mass ratio, by the vacuum-drying 18 hours at 70 DEG C of gained mixing wet feed after ball milling terminates, then polyoxyethylene glycol-the spirituous solution adding its quality 2.5% in vacuum-drying gained mixed powder carries out mixing glue and granulates, and forms granular mixture;
(2) shaping
Pellet step (1) prepared loads in the die cavity of mould to be suppressed 9 seconds under 120MPa, is pressed into base sample;
(3) low pressure sintering
The base sample prepared in step (2) is put into vacuum degumming stove and carries out degumming process, be evacuated to 1 × 10
-1pa, comes unstuck 4 hours at 600 DEG C, then the base sample after degumming process is put into low-pressure sintering furnace, with the ramp to 1220 of 5 DEG C/min DEG C sintering 2h, after sintering time expires, with 6 DEG C/min ramp to 1440 DEG C insulation 1.5h, after soaking time expires, pass into argon gas at such a temperature to 3MPa is incubated 1h in argon atmosphere, continue after cool to room temperature with the furnace, namely obtain 30TiCN-70 (Ti, 10W, 5Mo, 5Cr, 0.2Nb) (C
0.5n
0.5) sintering metal of mixed cored structure, after tested, its hardness is 1550HV
30, fracture toughness property is 13.8MPam
1/2, bending strength is 2017MPa.
Claims (10)
1. based on TiCN-(Ti, M) CN mixes the cermet material of cored structure, it is characterized in that this cermet material is by black core bright inner ring ash outer ring structure, ash core bright inner ring ash outer ring structure, bright cored structure and Co are or/and the bonding phase composite of Ni, in described black core bright inner ring ash outer ring structure, black core is formed by TiCN, bright inner ring, ash outer shroud is by (Ti, M) CN sosoloid is formed, in described grey core bright inner ring ash outer ring structure, ash core, bright inner ring, ash outer shroud is by (Ti, M) CN sosoloid is formed, described bright cored structure is by dissolving the Co sosoloid of M or/and the Ni sosoloid dissolving M is formed, the M content > that the M content > that the M content > forming the sosoloid of bright core forms the sosoloid of bright inner ring forms the sosoloid of grey outer shroud forms the M content of the sosoloid of grey core, described M is W, Mo, V, Cr, Ta, at least one in Nb.
2. mix a preparation method for the cermet material of cored structure described in claim 1 based on TiCN-(Ti, M) CN, it is characterized in that the component of raw material and the mass percent of each component are:
Co powder or/and Ni powder 10 ~ 20%,
Equations of The Second Kind carbide powder 0.5 ~ 20%,
TiCN-(Ti, M) CN powder mix 60 ~ 89.5%,
Described M is at least one in W, Mo, V, Cr, Ta, Nb, and described Equations of The Second Kind carbide powder is WC powder, Mo
2c powder, Cr
3c
2powder, TaC powder, NbC powder, V
xat least one in C powder, V
xin C, 0 < x≤1;
Processing step is as follows:
(1) batch mixing and granulation
Measure each raw material by the mass percent of above-mentioned raw materials, then the raw material measured is carried out successively wet ball grinding, vacuum-drying, interpolation forming agent and mix, granulation, formed granular mixture;
(2) shaping
Pellet step (1) prepared loads the die cavity of mould, is pressed into base sample;
(3) low pressure sintering
The base sample prepared in step (2) is come unstuck 4 ~ 8 hours at vacuum tightness 0.1 ~ 1Pa, at 350 ~ 600 DEG C, then with ramp to 1200 ~ 1350 of 4 ~ 8 DEG C/min DEG C sintering 1 ~ 2h, after sintering time expires, with 5 ~ 10 DEG C/min ramp to 1420 ~ 1500 DEG C insulation 1 ~ 2h, after soaking time expires, pass into argon gas at such a temperature and be incubated 0.5 ~ 1h to 0.5MPa ~ 6MPa and in argon atmosphere, continue after cool to room temperature with the furnace, namely the sintering metal that TiCN-(Ti, M) CN mixes cored structure is obtained.
3. according to claim 2 based on TiCN-(Ti, M) CN mixes the preparation method of the cermet material of cored structure, it is characterized in that TiCN-(Ti, M) in CN powder mix, (Ti, M) mass percent of CN powder is the mass percent of 20% ~ 80%, TiCN powder is 20% ~ 80%.
4. according to Claims 2 or 3 based on TiCN-(Ti, M) CN mixes the preparation method of the cermet material of cored structure, it is characterized in that (Ti, M) in CN powder C atomicity account for C, atom N sum 30% ~ 70%, the quality of M element account for Ti, M element quality sum 15% ~ 35.5%.
5. according to Claims 2 or 3 based on TiCN-(Ti, M) CN mixes the preparation method of the cermet material of cored structure, it is characterized in that the operation of described wet ball grinding is: load in ball mill by the raw material measured, then abrading-ball and alcohol or acetone is added, ball milling obtains mixing wet feed for 30 ~ 90 hours, described abrading-ball is (4 ~ 10) by ball material mass ratio: 1 adds, and described alcohol or acetone add by every gram of raw material 6 ~ 10ml; Described vacuum-drying is that the mixing wet feed that obtained by wet ball grinding is under vacuum in 60 ~ 80 DEG C of dryings 12 ~ 24 hours.
6. according to claim 4 based on TiCN-(Ti, M) CN mixes the preparation method of the cermet material of cored structure, it is characterized in that the operation of described wet ball grinding is: load in ball mill by the raw material measured, then abrading-ball and alcohol or acetone is added, ball milling obtains mixing wet feed for 30 ~ 90 hours, described abrading-ball is (4 ~ 10) by ball material mass ratio: 1 adds, and described alcohol or acetone add by every gram of raw material 6 ~ 10ml; Described vacuum-drying is that the mixing wet feed that obtained by wet ball grinding is under vacuum in 60 ~ 80 DEG C of dryings 12 ~ 24 hours.
7. according to Claims 2 or 3 based on TiCN-(Ti, M) CN mixes the preparation method of the cermet material of cored structure, it is characterized in that described forming agent is the one in polyoxyethylene glycol, paraffin, SD glue, the add-on of forming agent is 0.5 ~ 3% of vacuum-drying gained mixed powder quality.
8. according to claim 4 based on TiCN-(Ti, M) CN mixes the preparation method of the cermet material of cored structure, it is characterized in that described forming agent is the one in polyoxyethylene glycol, paraffin, SD glue, the add-on of forming agent is 0.5 ~ 3% of vacuum-drying gained mixed powder quality.
9. according to claim 5 based on TiCN-(Ti, M) CN mixes the preparation method of the cermet material of cored structure, it is characterized in that described forming agent is the one in polyoxyethylene glycol, paraffin, SD glue, the add-on of forming agent is 0.5 ~ 3% of vacuum-drying gained mixed powder quality.
10. according to claim 6 based on TiCN-(Ti, M) CN mixes the preparation method of the cermet material of cored structure, it is characterized in that described forming agent is the one in polyoxyethylene glycol, paraffin, SD glue, the add-on of forming agent is 0.5 ~ 3% of vacuum-drying gained mixed powder quality.
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| CN109648077A (en) * | 2019-01-28 | 2019-04-19 | 自贡兆强密封制品实业有限公司 | It is a kind of to use (Ti, Cr, Nb) (Cx,N1-x) solid solution production cermet and preparation method thereof |
| CN113388770A (en) * | 2021-03-17 | 2021-09-14 | 中南大学 | Ti (C, N) -based metal ceramic with positive gradient ring core phase and preparation method thereof |
| CN113388770B (en) * | 2021-03-17 | 2021-12-28 | 中南大学 | Ti (C, N) -based metal ceramic with positive gradient ring core phase and preparation method thereof |
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