CN103938006A - Manufacturing method of cermet material resistant to molten aluminum corrosion - Google Patents
Manufacturing method of cermet material resistant to molten aluminum corrosion Download PDFInfo
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- CN103938006A CN103938006A CN201310019102.3A CN201310019102A CN103938006A CN 103938006 A CN103938006 A CN 103938006A CN 201310019102 A CN201310019102 A CN 201310019102A CN 103938006 A CN103938006 A CN 103938006A
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- 239000000463 material Substances 0.000 title claims abstract description 57
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 50
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 230000007797 corrosion Effects 0.000 title claims abstract description 43
- 238000005260 corrosion Methods 0.000 title claims abstract description 43
- 239000011195 cermet Substances 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title abstract description 8
- 238000005245 sintering Methods 0.000 claims abstract description 56
- 238000000498 ball milling Methods 0.000 claims abstract description 31
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 238000007731 hot pressing Methods 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims description 83
- 239000004411 aluminium Substances 0.000 claims description 46
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 25
- 238000002360 preparation method Methods 0.000 claims description 23
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 20
- 229910052593 corundum Inorganic materials 0.000 claims description 18
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 12
- 229910052786 argon Inorganic materials 0.000 claims description 10
- 229910052719 titanium Inorganic materials 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- 238000002791 soaking Methods 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000002131 composite material Substances 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000001035 drying Methods 0.000 abstract 1
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- 238000003825 pressing Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 28
- 239000002184 metal Substances 0.000 description 28
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 22
- 239000010936 titanium Substances 0.000 description 22
- 239000000919 ceramic Substances 0.000 description 17
- 239000007788 liquid Substances 0.000 description 10
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- 229910052580 B4C Inorganic materials 0.000 description 7
- 229910001018 Cast iron Inorganic materials 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 6
- 229910010293 ceramic material Inorganic materials 0.000 description 5
- 239000002905 metal composite material Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
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- 229910010271 silicon carbide Inorganic materials 0.000 description 4
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- 239000011159 matrix material Substances 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000001902 propagating effect Effects 0.000 description 3
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
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- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a manufacturing method of a cermet material resistant to molten aluminum corrosion. The manufacturing method includes the following steps of (1) batching, mixing and ball milling, (2) smashing and drying, (3) pressing and forming and (4) sintering. Common hot-pressing and hot isostatic pressing technologies used at present are replaced by the manufacturing method, the production technology is simplified, production cost is reduced, and the compactness of the cermet composite material is greatly improved, so that corrosion resistance of the cermet composite material is improved, the service life of the cermet material is prolonged, and the cermet material has important engineering application value due to the corrosion resistance in molten aluminum.
Description
Technical field:
The present invention relates to the corrosion of resistance to aluminium Material Field, relate in particular to a kind of preparation method of cermet material.
Background technology:
Along with the increase of aluminum products demand; cause the waste of the use material such as container, liquid aluminium transport pipe and thermometric protective casing of dress metal aluminium liquid, aluminum alloy melt to increase, the material that obtains the better corrosion of resistance to aluminium has very important engineering using value thereupon.Liquid aluminium and aluminium alloy, due to its strong corrodibility, are had higher requirement to the solidity to corrosion of the materials such as dress aluminum alloy melt, aluminum alloy melt transport pipe and survey aluminium liquid thermocouple protective casing.
Aluminum oxide is a kind of research stupalith early, composite ceramic material taking aluminum oxide as matrix has high rigidity, the excellent properties such as high temperature resistant, wear-resistant, corrosion-resistant, is therefore widely used in the fields such as metallurgy, chemical industry, machinery, electronics and aerospace; But pure alumina fragility is large, toughness is low, how solving this defect also becomes the focus that numerous domestic and international researchers study always.Investigation of materials person is by adding metal in alumina substrate material, make the fragility problem of alumina substrate obtain improving significantly, large quantity research report shows, in improving alumina material toughness, tend to follow the raising of its cost, the preparation cost that therefore how to reduce material also becomes the critical problem of people's research.China national Department of Intellectual Property discloses the preparation method of 201110094542.6 1 kinds of alumina ceramic composite materials, taking Al-Ti-B intermediate alloy, rare metal as toughened and reinforced interpolation phase, preparation by the following method: (1) in common medium-frequency induction furnace 1000～1300 DEG C, titanium valve and boron powder are added to aluminium liquid, be incubated 5～10 minutes, prepare Al-Ti-B intermediate alloy; Al-Ti-B intermediate alloy consists of by weight percentage, boron 0.5～2.0%, and titanium 3.0～7.0%, aluminium is surplus; (2) using alumina-ceramic as body material, taking Al-Ti-B intermediate alloy, rare metal as toughened and reinforced interpolation phase, take raw material according to the mass percent of aluminum oxide 86%～95%, Al-Ti-B intermediate alloy 3%～8%, rare metal 2%～6%; (3) the raw material weighing up is mixed, taking ethanol as medium Intensive ball mill is after 100～120 hours, place vacuum drying oven and be dried and cross 200 mesh sieves, make even mixed powder; (4) adopt hot-pressing sintering technique, using nitrogen as sintering atmosphere, 1480～1580 DEG C of sintering temperatures, sintering pressure 28～35MPa, soaking time 25～35 minutes, can prepare high tenacity, high-intensity alumina ceramic composite material.
Ceramic-metal composites feature be by ceramic advantage as high temperature resistant, high strength and oxidation-resistance etc. with the advantage of metal as good toughness and bending strength etc. combine, obtain a kind of material with good over-all properties; In addition, metallographic phase add sintering character and the fragility that can also improve ceramic phase.Be used for preparing the most frequently used pottery of ceramic-metal composite material and have resistant to elevated temperatures oxide compound, silicide, boride, carbide and nitride etc.; Wherein, norbide, because having excellent over-all properties, is more and more subject to the extensive concern of Chinese scholars.Norbide has ultrahigh hardness, low-density characteristic.Mostly the pure B4C ceramic plate of current closely knit sintering is to adopt the mode of high-temperature pressurizing sintering at 2300 DEG C to obtain.Because ceramic densification process is more difficult, thus the stupalith that the material density finally obtaining in 95% left and right, wants to obtain high-compactness (> 98%) to equipment and process require high.The B4C pottery ultimate compression strength that can make is at present generally between 1.7GPa～2.8GPa, and HV can reach 1220～1250, and bending strength is between 280MPa～400MPa.Because the performance of norbide is relevant to ceramic density, density with sintering temperature, soaking time and moulding pressure are closely related, therefore to obtain high performance dense ceramic material owing to all requiring very high to molding device and technological process, cause product cost too high, and the product of final molding cannot carry out normal machining because of the restriction of ceramic high rigidity, and therefore, the application of shape of its product is also greatly limited.Require highly for pottery preparation, fragility is large and be difficult for mach shortcoming and developed B4C/Al cermet material technology prepared by pressure-free impregnation.Adopt lower sintering temperature (2000 DEG C of left and right) with respect to closely knit sintering to prepare ceramic skeleton, reduced the requirement to equipment, reduced preparation time; And adding of metallic aluminium can improve ceramic toughness.Select metallic aluminium to be because the density of norbide and aluminium is close, and the ductility of fine aluminium, more flowability, can infiltrate in the space of norbide skeleton by capillary attraction automatic infiltration at a certain temperature, without additionally pressurization again.And adding of aluminium makes the sintering metal product of final molding have electroconductibility, can utilize wire cutting machine to be processed into any desired shape.At present obtaining larger progress for the research of B4C/Al is to have reduced ceramic sintering temperature (sintering between 1900 DEG C～2000 DEG C), adding of aluminium brought up to the bending strength of stupalith between 300GPa～600GPa, fracture toughness property also improves, the bending strength of B4C/Al matrix material prepared by the people such as domestic Li Qing reaches 601MPa, fracture toughness property is 9.2MPam1/2, but its hardness (between HV900～1050) and ultimate compression strength (1.2GPa～1.5GPa) are but reduced accordingly, and performance is subject to large (the wherein porosity of ceramic skeleton of the impact of metallic aluminium amount, the fluidity determining of metallic aluminium the number of metallic aluminium amount).China national Department of Intellectual Property discloses the preparation method of 201110453215.5 1 kinds of low-density ceramic-metal composites of high compressive strength, step is as follows: (1) granulating and forming: taking doped silicon carbide ceramic powder and boron carbide powder as ceramic material, the doped silicon carbide ceramic powder that is 5～50% by mass percent and surplus boron carbide powder add three-dimensional planetary mixed powder machine to mix powder, in ceramic material after mixing, adding mass concentration is 4% binding agent PVA mixing granulation, and the add-on of binding agent PVA is 2～10% of ceramic material total mass, after granulation, then adopt 24～60 order sieve, leave standstill and again institute's granulation is placed in to cast iron die extrusion forming after 12 hours, obtain precast billet, molding pressure is 50～120MPa, pressurize 30～150s, (2) pressureless sintering: precast billet is placed in to vacuum sintering furnace, vacuumize, vacuum is 10-2Pa, be warming up to 1600～1900 DEG C of sintering with 5～10 DEG C/min speed, insulation 0.5～2h, obtain B4C-SiC Quito hole pre-burning body, (3) pressure-free impregnation: aluminium block is placed on B4C-SiC Quito hole pre-burning body, and be jointly placed in vacuum sintering furnace and be warming up to 1000～1200 DEG C, insulation 0.5～2h, obtain ceramic metal, (4) thermal treatment: ceramic metal is placed in heat treatment furnace, and be heated to 650～900 DEG C of temperature, after insulation 8～24h, take out, and be placed in water and do quench treatment.
The heterogeneous composite material that cermet material is made up of one or more ceramic phases and metal or alloy.Can be divided into heat resistant type by performance and purposes, wear-resistant type and corrosion resistant type etc.China national Department of Intellectual Property discloses CN200610053348.2 metal/metal ceramic composite, it is that composite cermet forms on low alloy steel base material, described sintering metal is metal matrix titanium carbide, and it comprises Binder Phase metal and is dispersed in the hard particles phase titanium carbide in Binder Phase metal; Between described low alloy steel and sintering metal, be metallurgical binding, between the Binder Phase metal at bonding interface place and described low alloy steel, exist and spread the district of dissolving each other, spread the gradient transitional lay that has hard particles phase in the district of dissolving each other; Described Binder Phase metal is nickel-based self-fluxing alloy, and the self propagating high temperature building-up reactions that described titanium carbide is caused in the time casting described low alloy steel by the titanium in self propagating high temperature building-up reactions system and carbon generates; It consists of described self propagating high temperature building-up reactions system by percentage to the quality: nickel-based self-fluxing alloy 35～45%, titanium Ti44～52%, carbon C 11～13%.
Have the very strong corrosion of resistance to aluminium ability although match the grand stupalith that waits, its fragility is large, especially very easily ftractures and has limited its use at the working condition of hot and cold alternation.Metal and ceramic composite can effectively improve the fragility of single stupalith, and strong, the toughness of entirety are improved, and the material that had not only had excellent strength-toughness but also had the high corrosion of a resistance to aluminium performance for preparation has improved condition.
Summary of the invention:,
The object of the present invention is to provide a kind of preparation process simple, material structure densification, has the preparation method of the corrosion of the resistance to aluminium cermet material of the corrosion of resistance to aluminium performance.
The present invention is achieved by the following technical solution:
The preparation method of the corrosion of resistance to aluminium cermet material, comprises the following steps:
(1) the mixing and ball milling of preparing burden: after first Ti powder and Ni powder being weighed according to weight percent 1-5%Ti, 10-25%Ni, pack ball mill into, material: ball weight, than being 1:2, is filled with argon shield in ball mill, start ball milling, Ball-milling Time is 6-10 hour; Secondly in ball mill, add Al2O3 powder and AlN powder according to weight percent 40-60% Al2O3,20-40%AlN, and according to compound: ball weight is than carrying out secondary ball milling for 1:2, and Ball-milling Time is 10-14 hour;
(2) pulverize dry: the Ti powder mixing after ball milling, Ni powder, Al2O3 powder and AlN powder are pulverized, are dried;
(3) press forming: the blank that above-mentioned powder mix is packed into mould and is pressed into desired shape;
(4) sintering: above-mentioned blank is carried out to electric field-activate hot pressing assisted sintering; the vacuum sintering under argon shield atmosphere of described sintering, described vacuum tightness 9～13Pa, sintering temperature is 1050 DEG C～1250 DEG C; soaking time is 5～10 minutes, after sintering furnace cooling come out of the stove, the demoulding.
The mould of described step in is (3) graphite jig.
Described step (4) in heating, be 50-65MPa to the auxiliary pressure applying of blank electric field-activate hot pressing in insulating process.
The purity > 97.9% of described Ti powder and Ni powder, 20 microns of granularity <.
The purity > 97.9% of described AlN powder and Al2O3 powder, 50 microns of granularity <.
The present invention compared with prior art has following row beneficial effect:
The present invention substitutes common hot pressing and the heat and other static pressuring processes of using at present, simplify production technique, reduced production costs, greatly improved the compactness of ceramic-metal composite, thereby improve the corrosion resistance nature of ceramic-metal composite, improved the work-ing life of cermet material, the corrosion resistance nature of this material in aluminium liquid has very important engineering using value simultaneously.
Brief description of the drawings:
Fig. 1 is that the scanning electron microscopy of cermet material of the present invention is organized photo;
Fig. 2 is the X-ray diffraction analysis collection of illustrative plates of cermet material of the present invention.
Embodiment:
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Embodiment mono-: referring to Fig. 1 and Fig. 2, a kind of preparation method of the corrosion of resistance to aluminium cermet material, comprises the following steps:
(1) the mixing and ball milling of preparing burden: pack ball mill into after first Ti powder and Ni powder being weighed according to weight percent 4%Ti, 17%Ni, the purity of described Ti powder and Ni powder is 99.9%, 20 microns of granularity <, material: ball weight is than being 1:2, in ball mill, be filled with argon shield, start ball milling, Ball-milling Time is 8 hours; Secondly in ball mill, add Al2O3 powder and AlN powder according to weight percent 55% Al2O3,24%AlN, the purity of described AlN powder and Al2O3 powder is 99.9%, 50 microns of granularity <, and according to compound: ball weight is than carrying out secondary ball milling for 1:2, and Ball-milling Time is 14 hours; The mechanical milling process Main Function of Ti powder, Ni powder is the granularity of refinement bonded metal Ti powder, Ni powder, and two kinds of metal-powders are fully mixed, and the Main Function of Al2O3 powder, AlN sphere of powder mill is to mix, and all particle sizes are more and more tiny;
(2) pulverize dry: the Ti powder mixing after ball milling, Ni powder, Al2O3 powder and AlN powder are taken out, and at 110 DEG C, dry, grind;
(3) press forming: above-mentioned powder mix is filled in graphite jig, is put in the blank that is pressed into desired shape on baby press;
(4) sintering: above-mentioned blank is carried out to electric field-activate hot pressing assisted sintering; the vacuum sintering under argon shield atmosphere of described sintering; in heating, insulating process, blank is applied to 60MPa pressure; described vacuum tightness 10Pa; sintering temperature is 1150 DEG C; soaking time is 5～10 minutes, after sintering furnace cooling come out of the stove, the demoulding.
The cermet material corrosion of resistance to aluminium performance prepared by the present invention is good.The cermet material of preparing in the present invention carries out corrosion test in the aluminium liquid of melting, obviously improves as the corrosion resistance nature such as stainless steel, cast iron compared with other metallic substance.
Gained sintering metal sample is 99.5% by drainage test density.Gained sintering metal sample scanning electron microscopy is organized as shown in Figure 1, and the X ray diffracting spectrum of gained sintering metal sample as shown in Figure 2.
Two kinds of differing materials corrode the average corrosion rate after 8 hours in 700 DEG C of aluminium liquid, as shown in Table 1.
The corrosion of the resistance to aluminium Performance Ratio of table one or two kind of differing materials
| ? | Cermet material prepared by the present invention | Cast iron |
| Average corrosion rate (mm/h) | 6.3Х10-4 | 8.5Х10-1 |
Embodiment bis-: a kind of preparation method of the corrosion of resistance to aluminium cermet material, comprises the following steps:
(1) the mixing and ball milling of preparing burden: pack ball mill into after first Ti powder and Ni powder being weighed according to weight percent 4%Ti, 15%Ni, the purity of described Ti powder and Ni powder is 99.9%, 20 microns of granularity <, material: ball weight is than being 1:2, in ball mill, be filled with argon shield, start ball milling, Ball-milling Time is 8 hours; Secondly in ball mill, add Al2O3 powder and AlN powder according to weight percent 50% Al2O3,31%AlN, the purity of described AlN powder and Al2O3 powder is 99.9%, 50 microns of granularity <, and according to compound: ball weight is than carrying out secondary ball milling for 1:2, and Ball-milling Time is 12 o'clock;
(2) pulverize dry: the Ti powder mixing after ball milling, Ni powder, Al2O3 powder and AlN powder are taken out, and at 120 DEG C, dry, grind;
(3) press forming: above-mentioned powder mix is filled in graphite jig, is put in the blank that is pressed into desired shape on baby press;
(4) sintering: above-mentioned blank is carried out to electric field-activate hot pressing assisted sintering; the vacuum sintering under argon shield atmosphere of described sintering; in heating, insulating process, blank is applied to 60MPa pressure; described vacuum tightness 10Pa; sintering temperature is 1100 DEG C; soaking time is 5～10 minutes, after sintering 100 DEG C of furnace cooling come out of the stove below, the demoulding.
Gained sintering metal sample is 99.6% by drainage test density.
Two kinds of differing materials corrode the average corrosion rate after 8 hours in 700 DEG C of aluminium liquid, as shown in Table 2.
The corrosion of the resistance to aluminium Performance Ratio of two kinds of differing materials of table two
| ? | Cermet material prepared by the present invention | Cast iron |
| Average corrosion rate (mm/h) | 5.2Х10-4 | 8.5Х10-1 |
Embodiment tri-: a kind of preparation method of the corrosion of resistance to aluminium cermet material, comprises the following steps:
(1) the mixing and ball milling of preparing burden: pack ball mill into after first Ti powder and Ni powder being weighed according to weight percent 3%Ti, 13%Ni, the purity of described Ti powder and Ni powder is 99.9%, 20 microns of granularity <, material: ball weight is than being 1:2, in ball mill, be filled with argon shield, start ball milling, Ball-milling Time is 8 hours; Secondly in ball mill, add Al2O3 powder and AlN powder according to weight percent 50% Al2O3,34%AlN, the purity of described AlN powder and Al2O3 powder is 99.9%, 50 microns of granularity <, and according to compound: ball weight is than carrying out secondary ball milling for 1:2, and Ball-milling Time is 10 hours;
(2) pulverize dry: the Ti powder mixing after ball milling, Ni powder, Al2O3 powder and AlN powder are taken out, and at 120 DEG C, dry, grind;
(3) press forming: above-mentioned powder mix is filled in graphite jig, is put in the blank that is pressed into desired shape on baby press;
(4) sintering: above-mentioned blank is carried out to electric field-activate hot pressing assisted sintering; the vacuum sintering under argon shield atmosphere of described sintering; in heating, insulating process, blank is applied to 60MPa pressure; described vacuum tightness 10Pa; sintering temperature is 1100 DEG C; soaking time is 5～10 minutes, after sintering 100 DEG C of furnace cooling come out of the stove below, the demoulding.
Gained sintering metal sample is 99.7% by drainage test density.
Two kinds of differing materials corrode the average corrosion rate after 8 hours in 700 DEG C of aluminium liquid, as shown in Table 3.
The corrosion of the resistance to aluminium Performance Ratio of two kinds of differing materials of table three
| ? | Cermet material prepared by the present invention | Cast iron |
| Average corrosion rate (mm/h) | 6.7Х10 -4 | 8.5Х10 -1 |
There is the raising of larger amplitude more than cast iron by the cermet material corrosion of the resistance to aluminium performance obtaining in embodiment mono-, two, three.In addition, corrosion resisting property corresponding while it can also be seen that sintering metal density is higher from three tables is higher.The present invention can prepare the sintering metal block materials with heterogeneity proportioning, and the higher corrosion of resistance to aluminium of density is higher.
Embodiment is just for the ease of understanding technical scheme of the present invention; do not form limiting the scope of the invention; every interior any simple modification, equivalent variations and modification of perhaps according to technical spirit of the present invention, above scheme being done that does not depart from technical solution of the present invention, within all still belonging to protection domain of the present invention.
Claims (8)
1. the preparation method of the corrosion of resistance to aluminium cermet material, comprises the following steps:
(1) the mixing and ball milling of preparing burden: after first Ti powder and Ni powder being weighed according to weight percent 1-5%Ti, 10-25%Ni, pack ball mill into, material: ball weight, than being 1:2, is filled with argon shield in ball mill, start ball milling, Ball-milling Time is 6-10 hour; Secondly in ball mill, add Al2O3 powder and AlN powder according to weight percent 40-60% Al2O3,20-40%AlN,, and according to compound: ball weight is than carrying out secondary ball milling for 1:2, and Ball-milling Time is 10-14 hour;
(2) pulverize dry: the Ti powder mixing after ball milling, Ni powder, Al2O3 powder and AlN powder are pulverized, are dried;
(3) press forming: the blank that above-mentioned powder mix is packed into mould and is pressed into desired shape;
(4) sintering: above-mentioned blank is carried out to electric field-activate hot pressing assisted sintering; the vacuum sintering under argon shield atmosphere of described sintering, described vacuum tightness 9～13Pa, sintering temperature is 1050 DEG C～1250 DEG C; soaking time is 5～10 minutes, after sintering furnace cooling come out of the stove, the demoulding.
2. the preparation method of the corrosion of resistance to aluminium cermet material according to claim 1, is characterized in that: the mould of described step in is (3) graphite jig.
3. the preparation method of the corrosion of resistance to aluminium cermet material according to claim 1 and 2, is characterized in that: described step (4) in heating, be 50-65MPa to the auxiliary pressure applying of blank electric field-activate hot pressing in insulating process.
4. the preparation method of the corrosion of resistance to aluminium cermet material according to claim 1 and 2, is characterized in that: the purity > 97.9% of described Ti powder and Ni powder, 20 microns of granularity <.
5. the preparation method of the corrosion of resistance to aluminium cermet material according to claim 3, is characterized in that: the purity > 97.9% of described Ti powder and Ni powder, 20 microns of granularity <.
6. according to the preparation method of the corrosion of the resistance to aluminium cermet material described in claim 1,2 or 5, it is characterized in that: the purity > 97.9% of described AlN powder and Al2O3 powder, 50 microns of granularity <.
7. the preparation method of the corrosion of resistance to aluminium cermet material according to claim 3, is characterized in that: the purity > 97.9% of described AlN powder and Al2O3 powder, 50 microns of granularity <.
8. the preparation method of the corrosion of resistance to aluminium cermet material according to claim 4, is characterized in that: the purity > 97.9% of described AlN powder and Al2O3 powder, 50 microns of granularity <.
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| CN110695362A (en) * | 2019-12-03 | 2020-01-17 | 冷水江市佳晨电子陶瓷有限责任公司 | Fe-Cr-based composite ceramic material and preparation method thereof |
| CN110695362B (en) * | 2019-12-03 | 2023-02-28 | 冷水江市佳晨电子陶瓷有限责任公司 | Fe-Cr-based composite ceramic material and preparation method thereof |
| CN114195534A (en) * | 2021-12-19 | 2022-03-18 | 辽宁伊菲科技股份有限公司 | Preparation method and device for material for preventing aluminum liquid from being polluted at high-purity and high-temperature |
| CN116354740A (en) * | 2023-03-30 | 2023-06-30 | 中国科学院上海硅酸盐研究所 | Alumina ceramic-steel composite structure and preparation method thereof |
| CN116354740B (en) * | 2023-03-30 | 2024-02-06 | 中国科学院上海硅酸盐研究所 | Alumina ceramic-steel composite structure and preparation method thereof |
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