CN104328321A - High-strength metal ceramic material and preparation method thereof - Google Patents
High-strength metal ceramic material and preparation method thereof Download PDFInfo
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- CN104328321A CN104328321A CN201410566470.4A CN201410566470A CN104328321A CN 104328321 A CN104328321 A CN 104328321A CN 201410566470 A CN201410566470 A CN 201410566470A CN 104328321 A CN104328321 A CN 104328321A
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 101
- 239000002184 metal Substances 0.000 title claims abstract description 101
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- 229910010293 ceramic material Inorganic materials 0.000 title abstract 7
- 238000002156 mixing Methods 0.000 claims abstract description 53
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 48
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 27
- 239000010439 graphite Substances 0.000 claims abstract description 27
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052742 iron Inorganic materials 0.000 claims abstract description 24
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 24
- 239000011733 molybdenum Substances 0.000 claims abstract description 24
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 24
- 239000010937 tungsten Substances 0.000 claims abstract description 24
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 23
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 23
- 239000011651 chromium Substances 0.000 claims abstract description 23
- 239000010941 cobalt Substances 0.000 claims abstract description 23
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 23
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 23
- RUFLMLWJRZAWLJ-UHFFFAOYSA-N nickel silicide Chemical compound [Ni]=[Si]=[Ni] RUFLMLWJRZAWLJ-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910021334 nickel silicide Inorganic materials 0.000 claims abstract description 23
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910021332 silicide Inorganic materials 0.000 claims abstract description 23
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000843 powder Substances 0.000 claims abstract description 21
- 239000000919 ceramic Substances 0.000 claims abstract description 16
- 238000007731 hot pressing Methods 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 238000000498 ball milling Methods 0.000 claims description 52
- 239000000463 material Substances 0.000 claims description 28
- 238000005245 sintering Methods 0.000 claims description 25
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 24
- 238000003825 pressing Methods 0.000 claims description 24
- 238000000227 grinding Methods 0.000 claims description 16
- 230000000630 rising effect Effects 0.000 claims description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- 238000010792 warming Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 7
- -1 4 parts Chemical compound 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000005452 bending Methods 0.000 abstract description 14
- 238000003801 milling Methods 0.000 abstract 1
- 239000011195 cermet Substances 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 7
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002905 metal composite material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Ceramic Products (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention belongs to the field of metal ceramic materials and discloses a high-strength metal ceramic material and a preparation method thereof. The high-strength metal ceramic material comprises 25-40 parts of zirconium dioxide, 23-32 parts of cobalt silicide, 19-35 parts of nickel silicide, 8-14 parts of chromium boride, 6-14 parts of iron, 4-7 parts of molybdenum, 3-5 parts of tungsten and 3-6 parts of graphite. The preparation method of the high-strength metal ceramic material comprises the following steps: (1) mixing the components at a high speed; (2) bal-milling the uniformly mixed metal ceramic raw materials by using a ball mill; and (3) carrying out hot pressing the ball-milled metal ceramic powder in a metal hot-press furnace and cooling to obtain the high-strength metal ceramic material. The prepared metal ceramic material has good Vickers hardness and bending strength.
Description
Technical field
The invention belongs to cermet material field, relate to a kind of cermet material and preparation method thereof, particularly relate to a kind of high-strength metal stupalith and preparation method thereof.
Background technology
Because sintering metal has high rigidity, high strength, the advantage such as wear-resistant, high temperature resistant, there is boundless development prospect in national defence and civil area.Wimet be industrial application the earliest, consumption maximum one metalloid pottery, cutting tool, grinding tool, wear-resisting, heat-resisting, anti-corrosion etc. in be used widely, and the ceramic-metallic development that to thereby promote with oxide compound, boride, nitride, carbonitride ceramic be hard phase.
At present, ceramic-metallic primary articles has cutter, grinding tool, magneticsubstance heating unit, anti-friction bearing, corrosion resistant component to be widely used on metallurgical production, turbine manufacture and rocketry.Ceramic-metallic hardness and bending strength investigate two important parameters of cermet material performance, cermet material hardness and the bending strength of routine are lower, license notification number a kind of ceramic-metal composite that has been the disclosure of the invention of CN101871070, matrix material comprises ilmenite powder, aluminium powder, graphite, and it has higher hardness and bending strength.
Summary of the invention
The technical problem solved: cermet material has very many advantages compared to independent stupalith and independent metallic substance, but the hardness of the cermet material of routine and bending strength are all lower, effectively can not improve the characteristic of cermet material, therefore need cermet material of a kind of new high strength and preparation method thereof.
Technical scheme: for the problems referred to above, the invention discloses a kind of high-strength metal stupalith and preparation method thereof, and described high-strength metal stupalith comprises the composition of following weight parts:
Zirconium dioxide 25-40 part,
Cobalt silicide 23-32 part,
Nickel silicide 19-35 part,
Chromium boride 8-14 part,
Iron 6-14 part,
Molybdenum 4-7 part,
Tungsten 3-5 part,
Graphite 3-6 part.
Further, described a kind of high-strength metal stupalith, comprises the composition of following weight parts:
Zirconium dioxide 28-34 part,
Cobalt silicide 26-30 part,
Nickel silicide 22-27 part,
Chromium boride 10-13 part,
Iron 8-11 part,
Molybdenum 5-7 part,
Tungsten 3-4 part,
Graphite 3-5 part.
Further, described a kind of high-strength metal stupalith, comprises the composition of following weight parts:
Zirconium dioxide 31 parts,
Cobalt silicide 28 parts,
Nickel silicide 25 parts,
Chromium boride 12 parts,
Iron 10 parts,
Molybdenum 6 parts,
3 parts, tungsten,
4 parts, graphite.
A preparation method for high-strength metal stupalith, step is as follows:
(1) zirconium dioxide 25-40 part, cobalt silicide 23-32 part, nickel silicide 19-35 part, chromium boride 8-14 part, iron 6-14 part, molybdenum 4-7 part, tungsten 3-5 part, graphite 3-6 part is got by weight respectively, mentioned component is first carried out pre-mixing, after mixing, carries out high-speed mixing again; (2) the sintering metal raw material ball mill after mixing is carried out ball milling; (3) being dropped in metal heat pressing stove by metal ceramic powder after ball milling and carry out hot pressing, is high-strength metal stupalith after cooling.
Further, the preparation method of described a kind of high-strength metal stupalith, preparation method's step is as follows:
(1) zirconium dioxide 25-40 part, cobalt silicide 23-32 part, nickel silicide 19-35 part, chromium boride 8-14 part, iron 6-14 part, molybdenum 4-7 part, tungsten 3-5 part, graphite 3-6 part is got by weight respectively, mentioned component is first carried out pre-mixing, drop into after mixing in high-speed mixer, high-speed mixer rotating speed is 200r/min, and mixing time is 15min-35min;
(2) the sintering metal raw material ball mill after mixing is carried out ball milling, during ball milling, ratio of grinding media to material is 40:1-70:1, and drum's speed of rotation is 150-180r/min, and Ball-milling Time is 1.5-4.5h;
(3) metal ceramic powder is dropped in metal heat pressing stove after ball milling, nitrogen is poured in metal heat pressing stove, hot pressing furnace is heated up, temperature rise rate is 25 DEG C/min, 30-50min is incubated when being warming up to 550 DEG C, rising to temperature according to the temperature rise rate of 40 DEG C/min is again 820-860 DEG C, be incubated 20min-40min again, rising to temperature according to the temperature rise rate of 30 DEG C/min is again 1220-1360 DEG C, sintering time is 2-3h, be reduced to room temperature, rate of temperature fall is 25 DEG C/min, is high-strength metal stupalith after cooling.
In the preparation method of described a kind of high-strength metal stupalith, zirconium dioxide is 28-34 part, cobalt silicide is 26-30 part, nickel silicide is 22-27 part, chromium boride is 10-13 part, iron is 8-11 part, molybdenum is 5-7 part, tungsten is 3-4 part, graphite is 3-5 part.
In the preparation method of described a kind of high-strength metal stupalith, during ball milling, ratio of grinding media to material is 50:1.
Further, preparation method's step of described a kind of high-strength metal stupalith is as follows:
(1) zirconium dioxide 31 parts, cobalt silicide 28 parts, nickel silicide 25 parts, chromium boride 12 parts, iron 10 parts, molybdenum 6 parts, 3 parts, tungsten, 4 parts, graphite is got by weight respectively, mentioned component is first carried out pre-mixing, drop into after mixing in high-speed mixer, high-speed mixer rotating speed is 200r/min, and mixing time is 20min;
(2) the sintering metal raw material ball mill after mixing is carried out ball milling, during ball milling, ratio of grinding media to material is 60:1, and drum's speed of rotation is 170r/min, and Ball-milling Time is 2.5h;
(3) metal ceramic powder is dropped in metal heat pressing stove after ball milling, in metal heat pressing stove, pour nitrogen, heat up to hot pressing furnace, temperature rise rate is 25 DEG C/min, 40min is incubated when being warming up to 550 DEG C, rising to temperature according to the temperature rise rate of 40 DEG C/min is again 850 DEG C, then is incubated 20min, then to rise to temperature according to the temperature rise rate of 30 DEG C/min be 1310 DEG C, sintering time is 2.5h, be reduced to room temperature, rate of temperature fall is 25 DEG C/min, is high-strength metal stupalith after cooling.
Beneficial effect: the hardness of cermet material of the present invention and bending strength are obtained for and significantly improve, higher than hardness and the bending strength of the cermet material of routine, zirconium dioxide 25-40 part, cobalt silicide 23-32 part, nickel silicide 19-35 part, chromium boride 8-14 part, iron 6-14 part, molybdenum 4-7 part, tungsten 3-5 part, during graphite 3-6 part, hardness and the bending strength of cermet material are higher, when zirconium dioxide 31 parts, cobalt silicide 28 parts, nickel silicide 25 parts, chromium boride 12 parts, iron 10 parts, molybdenum 6 parts, 3 parts, tungsten, during 4 parts, graphite, hardness and the bending strength of the cermet material prepared are the highest.
Embodiment
Embodiment 1
(1) zirconium dioxide 25Kg, cobalt silicide 23Kg, nickel silicide 35Kg, chromium boride 14Kg, iron 14Kg, molybdenum 4Kg, tungsten 5Kg, graphite 3Kg is got by weight respectively, mentioned component is first carried out pre-mixing, drop into after mixing in high-speed mixer, high-speed mixer rotating speed is 200r/min, and mixing time is 35min; (2) the sintering metal raw material ball mill after mixing is carried out ball milling, during ball milling, ratio of grinding media to material is 70:1, and drum's speed of rotation is 180r/min, and Ball-milling Time is 4.5h; (3) metal ceramic powder is dropped in metal heat pressing stove after ball milling, in metal heat pressing stove, pour nitrogen, heat up to hot pressing furnace, temperature rise rate is 25 DEG C/min, 50min is incubated when being warming up to 550 DEG C, rising to temperature according to the temperature rise rate of 40 DEG C/min is again 860 DEG C, then is incubated 20min, then to rise to temperature according to the temperature rise rate of 30 DEG C/min be 1360 DEG C, sintering time is 2h, be reduced to room temperature, rate of temperature fall is 25 DEG C/min, is high-strength metal stupalith after cooling.
Embodiment 2
(1) zirconium dioxide 40Kg, cobalt silicide 32Kg, nickel silicide 19Kg, chromium boride 8Kg, iron 6Kg, molybdenum 7Kg, tungsten 3Kg, graphite 6Kg is got by weight respectively, mentioned component is first carried out pre-mixing, drop into after mixing in high-speed mixer, high-speed mixer rotating speed is 200r/min, and mixing time is 15min; (2) the sintering metal raw material ball mill after mixing is carried out ball milling, during ball milling, ratio of grinding media to material is 40:1, and drum's speed of rotation is 150r/min, and Ball-milling Time is 1.5h; (3) metal ceramic powder is dropped in metal heat pressing stove after ball milling, in metal heat pressing stove, pour nitrogen, heat up to hot pressing furnace, temperature rise rate is 25 DEG C/min, 30min is incubated when being warming up to 550 DEG C, rising to temperature according to the temperature rise rate of 40 DEG C/min is again 820 DEG C, then is incubated 40min, then to rise to temperature according to the temperature rise rate of 30 DEG C/min be 1220 DEG C, sintering time is 3h, be reduced to room temperature, rate of temperature fall is 25 DEG C/min, is high-strength metal stupalith after cooling.
Embodiment 3
(1) zirconium dioxide 28Kg, cobalt silicide 30Kg, nickel silicide 27Kg, chromium boride 13Kg, iron 11Kg, molybdenum 5Kg, tungsten 3Kg, graphite 5Kg is got by weight respectively, mentioned component is first carried out pre-mixing, drop into after mixing in high-speed mixer, high-speed mixer rotating speed is 200r/min, and mixing time is 35min; (2) the sintering metal raw material ball mill after mixing is carried out ball milling, during ball milling, ratio of grinding media to material is 70:1, and drum's speed of rotation is 180r/min, and Ball-milling Time is 4.5h; (3) metal ceramic powder is dropped in metal heat pressing stove after ball milling, in metal heat pressing stove, pour nitrogen, heat up to hot pressing furnace, temperature rise rate is 25 DEG C/min, 50min is incubated when being warming up to 550 DEG C, rising to temperature according to the temperature rise rate of 40 DEG C/min is again 860 DEG C, then is incubated 20min, then to rise to temperature according to the temperature rise rate of 30 DEG C/min be 1360 DEG C, sintering time is 2h, be reduced to room temperature, rate of temperature fall is 25 DEG C/min, is high-strength metal stupalith after cooling.
Embodiment 4
(1) zirconium dioxide 34Kg, cobalt silicide 26Kg, nickel silicide 22Kg, chromium boride 10Kg, iron 8Kg, molybdenum 7Kg, tungsten 4Kg, graphite 3Kg is got by weight respectively, mentioned component is first carried out pre-mixing, drop into after mixing in high-speed mixer, high-speed mixer rotating speed is 200r/min, and mixing time is 15min; (2) the sintering metal raw material ball mill after mixing is carried out ball milling, during ball milling, ratio of grinding media to material is 40:1, and drum's speed of rotation is 150r/min, and Ball-milling Time is 1.5h; (3) metal ceramic powder is dropped in metal heat pressing stove after ball milling, in metal heat pressing stove, pour nitrogen, heat up to hot pressing furnace, temperature rise rate is 25 DEG C/min, 30min is incubated when being warming up to 550 DEG C, rising to temperature according to the temperature rise rate of 40 DEG C/min is again 820 DEG C, then is incubated 40min, then to rise to temperature according to the temperature rise rate of 30 DEG C/min be 1220 DEG C, sintering time is 3h, be reduced to room temperature, rate of temperature fall is 25 DEG C/min, is high-strength metal stupalith after cooling.
Embodiment 5
(1) zirconium dioxide 31Kg, cobalt silicide 28Kg, nickel silicide 25Kg, chromium boride 12Kg, iron 10Kg, molybdenum 6Kg, tungsten 3Kg, graphite 4Kg is got by weight respectively, mentioned component is first carried out pre-mixing, drop into after mixing in high-speed mixer, high-speed mixer rotating speed is 200r/min, and mixing time is 20min; (2) the sintering metal raw material ball mill after mixing is carried out ball milling, during ball milling, ratio of grinding media to material is 60:1, and drum's speed of rotation is 170r/min, and Ball-milling Time is 2.5h; (3) metal ceramic powder is dropped in metal heat pressing stove after ball milling, in metal heat pressing stove, pour nitrogen, heat up to hot pressing furnace, temperature rise rate is 25 DEG C/min, 40min is incubated when being warming up to 550 DEG C, rising to temperature according to the temperature rise rate of 40 DEG C/min is again 850 DEG C, then is incubated 20min, then to rise to temperature according to the temperature rise rate of 30 DEG C/min be 1310 DEG C, sintering time is 2.5h, be reduced to room temperature, rate of temperature fall is 25 DEG C/min, is high-strength metal stupalith after cooling.
Comparative example 1
(1) zirconium dioxide 25Kg, chromium boride 14Kg, iron 14Kg, molybdenum 4Kg, tungsten 5Kg, graphite 3Kg is got by weight respectively, mentioned component is first carried out pre-mixing, drop in high-speed mixer after mixing, high-speed mixer rotating speed is 200r/min, and mixing time is 35min; (2) the sintering metal raw material ball mill after mixing is carried out ball milling, during ball milling, ratio of grinding media to material is 70:1, and drum's speed of rotation is 180r/min, and Ball-milling Time is 4.5h; (3) metal ceramic powder is dropped in metal heat pressing stove after ball milling, in metal heat pressing stove, pour nitrogen, heat up to hot pressing furnace, temperature rise rate is 25 DEG C/min, 50min is incubated when being warming up to 550 DEG C, rising to temperature according to the temperature rise rate of 40 DEG C/min is again 860 DEG C, then is incubated 20min, then to rise to temperature according to the temperature rise rate of 30 DEG C/min be 1360 DEG C, sintering time is 2h, be reduced to room temperature, rate of temperature fall is 25 DEG C/min, is high-strength metal stupalith after cooling.
Comparative example 2
(1) get cobalt silicide 23Kg, nickel silicide 35Kg, iron 14Kg, molybdenum 4Kg, tungsten 5Kg, graphite 3Kg by weight respectively, mentioned component is first carried out pre-mixing, drop in high-speed mixer after mixing, high-speed mixer rotating speed is 200r/min, and mixing time is 35min; (2) the sintering metal raw material ball mill after mixing is carried out ball milling, during ball milling, ratio of grinding media to material is 70:1, and drum's speed of rotation is 180r/min, and Ball-milling Time is 4.5h; (3) metal ceramic powder is dropped in metal heat pressing stove after ball milling, in metal heat pressing stove, pour nitrogen, heat up to hot pressing furnace, temperature rise rate is 25 DEG C/min, 50min is incubated when being warming up to 550 DEG C, rising to temperature according to the temperature rise rate of 40 DEG C/min is again 860 DEG C, then is incubated 20min, then to rise to temperature according to the temperature rise rate of 30 DEG C/min be 1360 DEG C, sintering time is 2h, be reduced to room temperature, rate of temperature fall is 25 DEG C/min, is high-strength metal stupalith after cooling.
Comparative example 3
CN101871070: get ilmenite powder 49.91 Kg, aluminium powder 17.72 Kg, graphite 3.94 Kg, powder mix is poured in ball grinder, ratio of grinding media to material 12: 1, ball milling 4 hours; Then, the powder after ball milling is put into moisture eliminator drying.Compound is loaded hot pressing graphite jig, puts into hot pressing furnace, vacuumize rear logical nitrogen protection.In the process heated up, first precompressed powder once, then pressurization 21Mpa during arrival 1400 DEG C such as grade.Under 1400 DEG C of pressurization 21MPa, be incubated 30min, finally cooling obtains ceramic-metal composite.
The hardness of embodiment 1 to 5 and contrast 1 to 3 and the numerical value of bending strength as follows:
| Vickers' hardness | Bending strength (MPa) | |
| Embodiment 1 | 1866 | 349 |
| Embodiment 2 | 1891 | 357 |
| Embodiment 3 | 1932 | 371 |
| Embodiment 4 | 1954 | 382 |
| Embodiment 5 | 2016 | 395 |
| Comparative example 1 | 1827 | 337 |
| Comparative example 2 | 1834 | 318 |
| Comparative example 3 | 1779 | 339 |
The Vickers' hardness of the cermet material of embodiment 5 is 2016, and bending strength is 395, significantly higher than Vickers' hardness and the bending strength of other embodiments and comparative example, achieves unexpected raising cermet material Vickers' hardness and the effect of bending strength.
Claims (8)
1. a high-strength metal stupalith, is characterized in that, described high-strength metal stupalith comprises the composition of following weight parts:
Zirconium dioxide 25-40 part,
Cobalt silicide 23-32 part,
Nickel silicide 19-35 part,
Chromium boride 8-14 part,
Iron 6-14 part,
Molybdenum 4-7 part,
Tungsten 3-5 part,
Graphite 3-6 part.
2. a kind of high-strength metal stupalith according to claim 1, is characterized in that, described high-strength metal stupalith comprises the composition of following weight parts:
Zirconium dioxide 28-34 part,
Cobalt silicide 26-30 part,
Nickel silicide 22-27 part,
Chromium boride 10-13 part,
Iron 8-11 part,
Molybdenum 5-7 part,
Tungsten 3-4 part,
Graphite 3-5 part.
3. a kind of high-strength metal stupalith according to claim 1, is characterized in that, described high-strength metal stupalith comprises the composition of following weight parts:
Zirconium dioxide 31 parts,
Cobalt silicide 28 parts,
Nickel silicide 25 parts,
Chromium boride 12 parts,
Iron 10 parts,
Molybdenum 6 parts,
3 parts, tungsten,
4 parts, graphite.
4. a preparation method for high-strength metal stupalith, is characterized in that, preparation method's step of described high-strength metal stupalith is as follows:
(1) zirconium dioxide 25-40 part, cobalt silicide 23-32 part, nickel silicide 19-35 part, chromium boride 8-14 part, iron 6-14 part, molybdenum 4-7 part, tungsten 3-5 part, graphite 3-6 part is got by weight respectively, mentioned component is first carried out pre-mixing, after mixing, carries out high-speed mixing again; (2) the sintering metal raw material ball mill after mixing is carried out ball milling; (3) being dropped in metal heat pressing stove by metal ceramic powder after ball milling and carry out hot pressing, is high-strength metal stupalith after cooling.
5. the preparation method of a kind of high-strength metal stupalith according to claim 4, is characterized in that, preparation method's step of described high-strength metal stupalith is as follows:
(1) zirconium dioxide 25-40 part, cobalt silicide 23-32 part, nickel silicide 19-35 part, chromium boride 8-14 part, iron 6-14 part, molybdenum 4-7 part, tungsten 3-5 part, graphite 3-6 part is got by weight respectively, mentioned component is first carried out pre-mixing, drop into after mixing in high-speed mixer, high-speed mixer rotating speed is 200r/min, and mixing time is 15min-35min;
(2) the sintering metal raw material ball mill after mixing is carried out ball milling, during ball milling, ratio of grinding media to material is 40:1-70:1, and drum's speed of rotation is 150-180r/min, and Ball-milling Time is 1.5-4.5h;
(3) metal ceramic powder is dropped in metal heat pressing stove after ball milling, nitrogen is poured in metal heat pressing stove, hot pressing furnace is heated up, temperature rise rate is 25 DEG C/min, 30-50min is incubated when being warming up to 550 DEG C, rising to temperature according to the temperature rise rate of 40 DEG C/min is again 820-860 DEG C, be incubated 20min-40min again, rising to temperature according to the temperature rise rate of 30 DEG C/min is again 1220-1360 DEG C, sintering time is 2-3h, be reduced to room temperature, rate of temperature fall is 25 DEG C/min, is high-strength metal stupalith after cooling.
6. the preparation method of a kind of high-strength metal stupalith according to claim 5, it is characterized in that, in the preparation method of described high-strength metal stupalith, zirconium dioxide is 28-34 part, cobalt silicide is 26-30 part, nickel silicide is 22-27 part, chromium boride is 10-13 part, iron is 8-11 part, molybdenum is 5-7 part, tungsten is 3-4 part, graphite is 3-5 part.
7. the preparation method of a kind of high-strength metal stupalith according to claim 5, is characterized in that, in the preparation method of described high-strength metal stupalith, during ball milling, ratio of grinding media to material is 50:1.
8. the preparation method of a kind of high-strength metal stupalith according to claim 5, is characterized in that, preparation method's step of described high-strength metal stupalith is as follows:
(1) zirconium dioxide 31 parts, cobalt silicide 28 parts, nickel silicide 25 parts, chromium boride 12 parts, iron 10 parts, molybdenum 6 parts, 3 parts, tungsten, 4 parts, graphite is got by weight respectively, mentioned component is first carried out pre-mixing, drop into after mixing in high-speed mixer, high-speed mixer rotating speed is 200r/min, and mixing time is 20min;
(2) the sintering metal raw material ball mill after mixing is carried out ball milling, during ball milling, ratio of grinding media to material is 60:1, and drum's speed of rotation is 170r/min, and Ball-milling Time is 2.5h;
(3) metal ceramic powder is dropped in metal heat pressing stove after ball milling, in metal heat pressing stove, pour nitrogen, heat up to hot pressing furnace, temperature rise rate is 25 DEG C/min, 40min is incubated when being warming up to 550 DEG C, rising to temperature according to the temperature rise rate of 40 DEG C/min is again 850 DEG C, then is incubated 20min, then to rise to temperature according to the temperature rise rate of 30 DEG C/min be 1310 DEG C, sintering time is 2.5h, be reduced to room temperature, rate of temperature fall is 25 DEG C/min, is high-strength metal stupalith after cooling.
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