CN109396419A - A kind of ceramic phase reinforcement and preparation method thereof - Google Patents
A kind of ceramic phase reinforcement and preparation method thereof Download PDFInfo
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- CN109396419A CN109396419A CN201811600244.8A CN201811600244A CN109396419A CN 109396419 A CN109396419 A CN 109396419A CN 201811600244 A CN201811600244 A CN 201811600244A CN 109396419 A CN109396419 A CN 109396419A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 99
- 230000002787 reinforcement Effects 0.000 title claims abstract description 60
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000002994 raw material Substances 0.000 claims abstract description 28
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052742 iron Inorganic materials 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims description 35
- 238000005245 sintering Methods 0.000 claims description 26
- 238000000498 ball milling Methods 0.000 claims description 25
- 238000000462 isostatic pressing Methods 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 11
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 9
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- 239000011651 chromium Substances 0.000 claims description 7
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 claims description 7
- 239000003595 mist Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 229910000604 Ferrochrome Inorganic materials 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 21
- 239000002245 particle Substances 0.000 abstract description 19
- 238000005266 casting Methods 0.000 abstract description 18
- 229910000831 Steel Inorganic materials 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 13
- 239000010959 steel Substances 0.000 abstract description 13
- 239000002131 composite material Substances 0.000 abstract description 10
- 230000007547 defect Effects 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 9
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 abstract description 7
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 abstract description 7
- 229910003470 tongbaite Inorganic materials 0.000 abstract description 7
- 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 abstract description 7
- 229910001928 zirconium oxide Inorganic materials 0.000 abstract description 7
- INZDTEICWPZYJM-UHFFFAOYSA-N 1-(chloromethyl)-4-[4-(chloromethyl)phenyl]benzene Chemical compound C1=CC(CCl)=CC=C1C1=CC=C(CCl)C=C1 INZDTEICWPZYJM-UHFFFAOYSA-N 0.000 abstract description 6
- 208000037656 Respiratory Sounds Diseases 0.000 abstract description 4
- 230000004888 barrier function Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000005215 recombination Methods 0.000 abstract description 4
- 230000006798 recombination Effects 0.000 abstract description 4
- 239000002893 slag Substances 0.000 abstract description 4
- 239000002244 precipitate Substances 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 8
- 230000008595 infiltration Effects 0.000 description 6
- 238000001764 infiltration Methods 0.000 description 6
- 230000002708 enhancing effect Effects 0.000 description 5
- 239000011148 porous material Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 238000007731 hot pressing Methods 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B22F1/0003—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/04—Compacting only by applying fluid pressure, e.g. by cold isostatic pressing [CIP]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
- B22F2003/145—Both compacting and sintering simultaneously by warm compacting, below debindering temperature
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention provides a kind of preparation methods of ceramic phase reinforcement, belong to technical field of composite materials, the type and amount ratio that the present invention passes through control raw material, ceramic phase reinforcement obtained includes the iron of ceramic hard phase and non-rigid phase, ceramic hard mutually includes aluminium oxide, zirconium oxide, vanadium carbide, titanium carbide and chromium carbide, on the one hand high component (> 50%) is solved, barrier of the ceramic particle Dispersed precipitate of small particle (1000 μm of <) in steel material, on the other hand it solves the problems, such as to wash away containing ceramic phase reinforcement in high-temperature steel iron liquid easily defeated and dispersed, ceramic phase reinforcement is eliminated simultaneously is also easy to produce stomata in later period casting recombination process, slag inclusion, the defects of crackle.
Description
Technical field
The present invention relates to technical field of composite materials more particularly to a kind of ceramic phase reinforcement and preparation method thereof.
Background technique
Only abrasive wear is born on surface to wear-resistant material component during military service, passes through compound method reinforced wear-resistant material
Component surface layer be wear-resistant material developing direction.Casting infiltration and casting-sinter process are prepare wearing coat composite material effective
One of method.
Casting infiltration is that ceramic particle is prefabricated into the precast body with some strength, is placed in the position that casting mold need to enhance, pours
Note molten metal solidification is cooling to obtain ceramic particle enhancing surface layer abrasion-proof composite material.In the prior art, CN101898239.B,
CN101899585.B, CN101899586.B, CN101898238.B disclose the side by reinforcement particle preparation at precast body
Method；Zhao dissipates plum etc. and reports using precast body combination casting infiltration, and it is multiple can to prepare 2~3mmZTA ceramic particle enhancing steel-based
Condensation material (referring to " preparations and polishing machine research of ZTA/ rich chromium cast iron based composites ", scattered plum of Zhao etc., foundry engieering,
2011,32(12):1673-1676)。
But for the ZTA ceramic particle of partial size < 1000 μm, due to micro- intergranular pore is too small and the mobility of steel etc. because
Element limitation, is difficult to prepare using casting infiltration.CN1297798A discloses a kind of tappet of iron-base surface composite material and its manufacturer
Method first prepares reinforcement green body, then makes to glue using casting process high-temperature molten steel or the heat of molten iron by cast-sintering technology
Simultaneously high-temperature chemical reaction occurs for the green compact sintering densification that is attached on mould wall, to generate surfacing, thickness in cast(ing) surface
Spend stable composite surface material layer.Using the heat in molten iron cavity filling process, in-situ preparation VC, TiC etc. in reinforcement, together
When complete reinforcement in conjunction with the metallurgical interface of matrix.But this method reinforcement has three: 1) internal-response is acute
Strong, heat, volume fluctuation are huge, and shrinkage cavity, stress collection moderate defect occur in reinforcement and basal body interface, and since molten iron casting is filled
The type time is short, ferroalloy quick solidification, and internal porosity, stress etc. can not be discharged or discharge the short time, will lead to be formed largely just
Beginning formation of crack；2) it is washed away in high-temperature steel iron liquid easily defeated and dispersed；3) in the case where filling time of casting is short, thermal capacity leads to addition
Graphite reaction not exclusively, in cast-internal remaining graphite point defect, reduces material mechanical performance.
Summary of the invention
In view of this, being improved in reinforcement the purpose of the present invention is to provide a kind of ceramic phase reinforcement and preparation method thereof
The content of hard phase makes the ceramic particle Dispersed precipitate of small particle (< 1000 μm) in the barrier of steel material, while eliminating enhancing
The defects of body is also easy to produce stomata, slag inclusion, crackle in later period casting recombination process.
In order to achieve the above-mentioned object of the invention, the present invention the following technical schemes are provided:
A kind of preparation method of ceramic phase reinforcement, comprising the following steps:
(1) raw material is mixed, obtains admixed finepowder, the raw material includes following components in percentage by weight: 10~60%
Hard ceramic powder, 10~22% high-carbon chromium iron, 2~4.5% vanadium iron powder, 1~2.5% carbonized titanium powder, 1.5~
3.5% nickel powder and 25~70% reduced iron powder；
(2) ball milling after mixing the admixed finepowder that the step (1) obtains with dehydrated alcohol, obtains ball milling product；
(3) isostatic pressing is carried out after drying the ball milling product that the step (2) obtains, obtains ceramic phase reinforcement base
Body；
(4) the ceramic phase reinforcement green body hot pressed sintering for obtaining the step (3), obtains ceramic phase reinforcement.
Preferably, in the step (1) average grain diameter of hard ceramic powder less than 1000 μm.
Preferably, hard ceramic powder includes Al in the step (1)2O3·ZrO2Complex-phase ceramic micropowder and/or ZrO2It is micro-
Powder.
Preferably, step (1) the medium high carbon ferrochrome powder includes the component of following mass fraction: C 6.0~10.0%, Cr
62~72%, Fe 20~35%.
Preferably, component of the vanadium iron powder comprising following mass fraction in the step (1): V 35~65%, Fe 35~
65%.
Preferably, the pressure of isostatic pressing is 180~300MPa, the guarantor of the isostatic pressing in the step (3)
The pressure time is 0.5~1h.
Preferably, the temperature of hot pressed sintering is 1230~1550 DEG C in the step (4), and the pressure of the hot pressed sintering is
20~50MPa, the time of the hot pressed sintering are 0.5~2h.
Preferably, the time of ball milling is 12~36h in the step (2), and the revolving speed of the ball milling is 100~300rpm.
Preferably, temperature dry in the step (3) is 100~250 DEG C, and the time of the drying is 2~5h.
The present invention also provides ceramic phase reinforcement made from preparation method described in above-mentioned technical proposal, the ceramic phase reinforcement
Iron including ceramic hard phase and non-rigid phase.
The present invention provides a kind of preparation methods of ceramic phase reinforcement, comprising the following steps: mixes raw material, is mixed
Micro mist, the raw material include following components in percentage by weight: 10~60% hard ceramic powder, 10~22% high carbon ferro-chrome
Powder, 2~4.5% vanadium iron powder, 1~2.5% carbonized titanium powder, 1.5~3.5% nickel powder and 25~70% reduced iron
Powder；Ball milling after the admixed finepowder is mixed with dehydrated alcohol obtains ball milling product；It will carry out waiting static pressure after the drying of ball milling product
Molding, obtains ceramic phase reinforcement green body；By ceramic phase reinforcement green body hot pressed sintering, ceramic phase reinforcement is obtained.The present invention and casting
Sintering process is compared, and by hot-pressing sintering technique, makes VC, Cr in ceramic phase reinforcement7C3Etc. reinforced phases synthetic reaction in this technique
Occur in link, make heat absorption, the heat release of material, contraction, expansion of volume etc. occur in advance, thus are avoided that short in casting process
The physical chemistry of time changes, and causes that composite material remaining pore defect, interface residual stress is excessive, reaction is incomplete, product
The problems such as performance is undesirable；Compared with gravity or pressure casting infiltration, ceramic phase reinforcement hole obtained is uniform, and steel fusant can
Preferably penetrate into；Compared with stirring-centre spinning, ceramic particle agglomeration, and the uniform particle sizes of ceramic particle are avoided
Distribution, is conducive to industry application；The present invention is low in cost simultaneously, can mechanization degree it is high, adapt to be mass produced, before popularization
Scape is very wide.For the present invention by type, amount ratio and the preparation method of control raw material, ceramic phase reinforcement obtained includes pottery
The iron of porcelain hard phase and non-rigid phase, ceramic hard mutually include aluminium oxide, zirconium oxide, vanadium carbide, titanium carbide and chromium carbide, a side
Face solve high component (> 50%), small particle (1000 μm of <) ceramic particle Dispersed precipitate steel material barrier, separately
On the one hand solves the problems, such as containing ceramic phase reinforcement high-temperature steel iron liquid wash away easily it is defeated and dispersed, while eliminate ceramic phase reinforcement the later period casting
Make the defects of stomata, slag inclusion, crackle are also easy to produce in recombination process.
Specific embodiment
The present invention provides a kind of preparation methods of ceramic phase reinforcement, comprising the following steps:
(1) raw material is mixed, obtains admixed finepowder, the raw material includes following components in percentage by weight: 10~60%
Hard ceramic powder, 10~22% high-carbon chromium iron, 2~4.5% vanadium iron powder, 1~2.5% carbonized titanium powder, 1.5~
3.5% nickel powder and 25~70% reduced iron powder；
(2) ball milling after mixing the admixed finepowder that the step (1) obtains with dehydrated alcohol, obtains ball milling product；
(3) isostatic pressing is carried out after drying the ball milling product that the step (2) obtains, obtains ceramic phase reinforcement base
Body；
(4) the ceramic phase reinforcement green body hot pressed sintering for obtaining the step (3), obtains ceramic phase reinforcement.
The present invention mixes raw material, obtains admixed finepowder, and the raw material includes following components in percentage by weight: 10~
60% hard ceramic powder, 10~22% high-carbon chromium iron, 2~4.5% vanadium iron powder, 1~2.5% carbonized titanium powder, 1.5
~3.5% nickel powder and 25~70% reduced iron powder.
In the present invention, the weight percent of hard ceramic powder is preferably 45% in the raw material.In the present invention, described
The average grain diameter of hard ceramic powder is preferably smaller than 1000 μm, and more preferably less than 900 μm.
In the present invention, the hard ceramic powder preferably includes Al2O3·ZrO2Complex-phase ceramic micropowder and/or ZrO2Micro mist.
The present invention is to the Al2O3·ZrO2Complex-phase ceramic micropowder and ZrO2The source of micro mist does not have special restriction, using this field skill
Commercial goods known to art personnel.
In the present invention, the weight percent of the raw material medium high carbon ferrochrome powder is preferably 17.6%.In the present invention, institute
State the component that high-carbon chromium iron preferably comprises following mass fraction: C 6.0~10.0%, Cr62~72%, Fe 20~35%.
The present invention does not have special restriction to the source of the high-carbon chromium iron, is using commercial goods well known to those skilled in the art
It can.
In the present invention, the weight percent of vanadium iron powder is preferably 3.6% in the raw material.In the present invention, the vanadium
Iron powder preferably comprises the component of following mass fraction: V 35~65%, Fe 35~65%.The present invention carrys out the vanadium iron powder
Source does not have special restriction, using commercial goods well known to those skilled in the art.
In the present invention, the weight percent of carbonized titanium powder is preferably 1.8% in the raw material.The present invention is to the carbonization
The source of titanium valve does not have special restriction, using commercial goods well known to those skilled in the art.
In the present invention, the weight percent of nickel powder is preferably 2% in the raw material.Source of the present invention to the nickel powder
There is no special restriction, using commercial goods well known to those skilled in the art.
In the present invention, the weight percent of reduced iron powder is preferably 30% in the raw material.The present invention is to the reduction
The source of iron powder does not have special restriction, using commercial goods well known to those skilled in the art.
After obtaining admixed finepowder, ball milling after the present invention mixes the admixed finepowder with dehydrated alcohol obtains ball milling product.
In the present invention, the time of the ball milling is preferably 12~36h, and the revolving speed of the ball milling is preferably 100~300rpm.
In the present invention, the amount ratio of the admixed finepowder and dehydrated alcohol is preferably 100g:40~60mL.
After obtaining ball milling product, the present invention will carry out isostatic pressing after ball milling product drying, obtain ceramic enhancing
Body green body.In the present invention, the temperature of the drying is preferably 100~250 DEG C, and more preferably 150 DEG C, the time of the drying
Preferably 2~5h, more preferably 3h.In the present invention, the drying preferably carries out in a vacuum drying oven.
In the present invention, the pressure of the isostatic pressing is preferably 180~300MPa, more preferably 250MPa, described
The dwell time of isostatic pressing is preferably 0.5~1h.
After obtaining ceramic phase reinforcement green body, the ceramic phase reinforcement green body hot pressed sintering is obtained ceramic enhancing by the present invention
Body.
In the present invention, the temperature of the hot pressed sintering is preferably 1230~1550 DEG C, and more preferably 1250 DEG C, the heat
The pressure of pressure sintering is preferably 20~50MPa, and more preferably 30MPa, the time of the hot pressed sintering is preferably 0.5~2h, more
Preferably 1h.The present invention makes VC, Cr in ceramic phase reinforcement by hot-pressing sintering technique7C3Etc. reinforced phases synthetic reaction at this
Occur in process procedure, make heat absorption, the heat release of material, contraction, expansion of volume etc. occur in advance, thus be avoided that in casting process
The physical chemistry of middle short time changes, cause composite material remaining pore defect, interface residual stress is excessive, reaction is incomplete,
The problems such as product property is undesirable.
The present invention also provides ceramic phase reinforcement made from preparation method described in above-mentioned technical proposal, the ceramic phase reinforcement
Iron including ceramic hard phase and non-rigid phase.In the present invention, the ceramic hard mutually preferably comprise aluminium oxide, zirconium oxide,
Vanadium carbide, titanium carbide and chromium carbide.
Ceramic phase reinforcement provided by the invention and preparation method thereof is described in detail below with reference to embodiment, still
They cannot be interpreted as limiting the scope of the present invention.
The average grain diameter of hard ceramic powder is less than 1000 μm in all embodiments of the invention, high-carbon chromium iron preferably comprise with
The component of lower mass fraction: C 6.0%, Cr 64%, Fe 30%, vanadium iron powder include the component of following mass fraction: V 35%,
Fe 65%.
Embodiment 1
1) raw material and proportion；
Each raw material proportioning of ceramic phase reinforcement is as shown in table 1.
Each raw material proportioning of 1 ceramic phase reinforcement of table
2) above-mentioned admixed finepowder is put into ball grinder, the ratio that the dehydrated alcohol of 40mL is added according to every 100g micro mist is mixed
It closes, drum's speed of rotation 300r/min, mixing time 12h；
3) admixed finepowder by above-mentioned after ball-milling treatment is put into vacuum oven dry, and temperature is 100 DEG C, when dry
Between 5h；
4) above-mentioned admixed finepowder is put into mold and carries out isostatic pressing, pressure 180MP, pressure maintaining 1h；
5) ceramic phase reinforcement green body obtained above is subjected to hot pressed sintering, sintering temperature is 1230 DEG C, and pressure is
50MPa, dwell time 2h keep the temperature 2h；
6) ceramic enhancement phase in ceramic phase reinforcement includes aluminium oxide, zirconium oxide, vanadium carbide, titanium carbide and chromium carbide, is increased
Strong body thickness 40mm.
Embodiment 2
1) raw material and proportion；
Each raw material proportioning of ceramic phase reinforcement is as shown in table 2.
Each raw material proportioning of 2 ceramic phase reinforcement of table
2) above-mentioned admixed finepowder is put into ball grinder, mixes according to the ratio that the dehydrated alcohol of 60mL is added in every 100g micro mist,
Drum's speed of rotation 100r/min, mixing time 36h；
3) above-mentioned admixed finepowder is put into drying in vacuum oven, temperature is 250 DEG C, drying time 2h；
4) admixed finepowder by above-mentioned after ball-milling treatment is put into mold and carries out isostatic pressing, pressure 300MP, pressure maintaining
0.5h；
5) ceramic phase reinforcement green body obtained above is subjected to hot pressed sintering, sintering temperature is 1230 DEG C, and pressure is
20MPa, dwell time 0.5h keep the temperature 0.5h；
6) ceramic enhancement phase in ceramic phase reinforcement includes aluminium oxide, zirconium oxide, vanadium carbide, titanium carbide and chromium carbide etc.,
Enhance body thickness 60mm.
Embodiment 3
1) raw material and proportion；
Each raw material proportioning of ceramic phase reinforcement is as shown in table 3.
Each raw material proportioning of 3 ceramic phase reinforcement of table
2) above-mentioned admixed finepowder is put into ball grinder, the ratio that the dehydrated alcohol of 40mL is added according to every 100g micro mist is mixed
It closes, drum's speed of rotation 300r/min, mixing time 12h；
3) admixed finepowder by above-mentioned after ball-milling treatment is put into vacuum oven dry, and temperature is 150 DEG C, when dry
Between 5h；
4) above-mentioned admixed finepowder is put into mold and carries out isostatic pressing, pressure 250MP, pressure maintaining 1h；
5) ceramic phase reinforcement green body obtained above is subjected to hot pressed sintering, sintering temperature is 1250 DEG C, and pressure is
30MPa, dwell time 1h keep the temperature 1h；
6) ceramic enhancement phase in ceramic phase reinforcement includes aluminium oxide, zirconium oxide, vanadium carbide, titanium carbide and chromium carbide etc.,
Enhance body thickness 50mm.
The present invention is compared with casting-sinter process, by hot-pressing sintering technique, makes VC, Cr in ceramic phase reinforcement7C3Etc. reinforced phases
Synthetic reaction occur in this process procedure, make heat absorption, the heat release of material, contraction, expansion of volume etc. occur in advance, this
Sample avoids the physical chemistry of the short time in casting process from changing, and causes composite material remaining pore defect, interface residual stress
The problems such as excessive, reaction is not exclusively, product property is undesirable；Compared with gravity or pressure casting infiltration, ceramic phase reinforcement obtained
Hole is uniform, and steel fusant can preferably penetrate into；Compared with stirring-centre spinning, ceramic particle agglomeration is avoided,
And uniform particle sizes' distribution of ceramic particle, be conducive to industry application；The present invention is low in cost simultaneously, can mechanization degree it is high, energy
Large-scale production is adapted to, promotion prospect is very wide.The present invention passes through type, amount ratio and the preparation method of control raw material,
Ceramic phase reinforcement obtained includes the iron of ceramic hard phase and non-rigid phase, and ceramic hard mutually includes aluminium oxide, zirconium oxide, carbonization
On the one hand vanadium, titanium carbide and chromium carbide solve the ceramic particle disperse point of high component (> 50%), small particle (1000 μm of <)
Cloth in the barrier of steel material, on the other hand solves the problems, such as to wash away containing ceramic phase reinforcement in high-temperature steel iron liquid it is easy to be defeated and dispersed, simultaneously
Eliminate the defects of ceramic phase reinforcement is also easy to produce stomata, slag inclusion, crackle in later period casting recombination process.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of preparation method of ceramic phase reinforcement, which comprises the following steps:
(1) raw material is mixed, obtains admixed finepowder, the raw material includes following components in percentage by weight: 10~60% it is hard
Matter ceramic powder, 10~22% high-carbon chromium iron, 2~4.5% vanadium iron powder, 1~2.5% carbonized titanium powder, 1.5~3.5%
Nickel powder and 25~70% reduced iron powder；
(2) ball milling after mixing the admixed finepowder that the step (1) obtains with dehydrated alcohol, obtains ball milling product；
(3) isostatic pressing is carried out after drying the ball milling product that the step (2) obtains, obtains ceramic phase reinforcement green body；
(4) the ceramic phase reinforcement green body hot pressed sintering for obtaining the step (3), obtains ceramic phase reinforcement.
2. preparation method according to claim 1, which is characterized in that the average grain of hard ceramic powder in the step (1)
Diameter is less than 1000 μm.
3. preparation method according to claim 1 or 2, which is characterized in that hard ceramic powder includes in the step (1)
Al2O3·ZrO2Complex-phase ceramic micropowder and/or ZrO2Micro mist.
4. preparation method according to claim 1, which is characterized in that step (1) the medium high carbon ferrochrome powder includes following
The component of mass fraction: C 6.0~10.0%, Cr 62~72%, Fe 20~35%.
5. preparation method according to claim 1, which is characterized in that vanadium iron powder includes following quality in the step (1)
The component of score: V 35~65%, Fe 35~65%.
6. preparation method according to claim 1, which is characterized in that the pressure of isostatic pressing is in the step (3)
180~300MPa, the dwell time of the isostatic pressing are 0.5~1h.
7. preparation method according to claim 1, which is characterized in that the temperature of hot pressed sintering is in the step (4)
1230~1550 DEG C, the pressure of the hot pressed sintering is 20~50MPa, and the time of the hot pressed sintering is 0.5~2h.
8. preparation method according to claim 1, which is characterized in that in the step (2) time of ball milling be 12~
36h, the revolving speed of the ball milling are 100~300rpm.
9. preparation method according to claim 1, which is characterized in that in the step (3) dry temperature be 100~
250 DEG C, the time of the drying is 2~5h.
10. ceramic phase reinforcement made from preparation method described in claim 1~9 any one, which is characterized in that the ceramics increase
Strong body includes the iron of ceramic hard phase and non-rigid phase.
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