CN105002385A - Method for increasing sintering density of ceramic particle enhanced Al-based composite material - Google Patents
Method for increasing sintering density of ceramic particle enhanced Al-based composite material Download PDFInfo
- Publication number
- CN105002385A CN105002385A CN201510472773.4A CN201510472773A CN105002385A CN 105002385 A CN105002385 A CN 105002385A CN 201510472773 A CN201510472773 A CN 201510472773A CN 105002385 A CN105002385 A CN 105002385A
- Authority
- CN
- China
- Prior art keywords
- ceramic particle
- sintering
- boric acid
- ceramic
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention provides a method for increasing the sintering density of a ceramic particle enhanced Al-based composite material and belongs to the field of composite materials. Firstly, water serves as a solvent, a boric acid solution with certain concentration is prepared, ceramic particles with certain mass are added to the solution and evenly stirred, and surface-modified ceramic particles are obtained after drying, calcinating and grinding. The ceramic particle enhanced Al-based composite material with the obviously-increased sintering density is prepared through mixing, pressing and sintering processes. In the sintering process, interface bonding is improved, sintering is promoted and the density is increased through reactions of boric oxide (B2O3), an Al base and the ceramic particles or surface oxides of the ceramic particles. When the green body density of the prepared Al-based composite material is 80%, the density obtained after sintering is more than 95%, and the sintering density is increased by more than 15% compared with that of a composite material prepared through unmodified ceramic particles. The method is simple in process and suitable for preparing the high-performance Al-based composite material, and raw materials are abundant and easy to obtain.
Description
Technical field
The present invention relates to powder metallurgical technology, belong to the category of matrix material.Specifically providing one utilizes boric acid to carry out ceramic grain surface modification, then prepares the method for the ceramic particle reinforced Al matrix composite of high-compactness through super-dry, calcining, mixing, compacting and sintering process.
Technical background
Ceramic particle reinforced Al matrix composite has high specific strength, high ratio modulus, thermal expansivity is low, good stability of the dimension, wear resistance is good, good anti-fatigue performance and fracture toughness property and high damping properties, also there is preparation technology simultaneously simple, with low cost, material isotropic, applied range, the advantages such as industrial production potential is large, aerospace can be widely used in, military, automobile, electronics, the fields such as sports, become an of paramount importance focus in world today's field of research of metal, and day by day produce and application direction development to industrial scale.
Ceramic particle reinforced Al matrix composite is the advantage such as thermal expansivity is little, density is low, good heat conductivity because having, and has a wide range of applications in the electron device such as lining package material, radiator element manufacturing electronic equipment.As instrument material, particle reinforce Al based composites is used to the component manufacturing the spacecrafts such as space shuttle, guided missile and satellite.As optical material, particle reinforce Al based composites is used to manufacture ultra lightweighting space telescope and tank laser mirror, significantly reduces its weight.
As high-abrasive material, particle reinforce Al based composites has a wide range of applications in the automobile component such as manufacture automobile brake disc, piston of automobile engine and wheel casing and brake facing.The automobile brake disc of particle reinforce Al based composites manufacture significantly reduces the quality of automobile brake disc, and improve wear resisting property, noise obviously reduces, and friction heat radiation is faster.
Although particle reinforce Al based composites has above-mentioned advantage, but when utilizing powder metallurgic method to prepare, due to the existence of Al particle surface oxide film cause normal condition under sinter time, Al atom can not through this layer continuously and the oxide film of densification, realize the diffusion transfer of material, cause can not merging mutually elimination hole of growing up between powder particle, thus affect densification, and due to consistency between Al particle and ceramic particle poor, ceramic particle is caused to add rear obstruction sintering, the reason of two aspects causes the sintered density of particle reinforce Al based composites lower, cannot apply.Usual solution route leads to N when mainly containing sintering
2, hot pressed sintering and employing hot isostatic pressing, but logical N
2sintering effect is not obvious, and the dimensional requirement of hot pressed sintering to sample is higher, and the sample larger to volume is not suitable for, and hot isostatic pressing cost is higher.So find out suitable method to seem particularly important to the sintered density improving ceramic particle reinforced Al matrix composite.
Summary of the invention
(these ceramic particles comprise oxide compound and carbide, such as Al to the object of the present invention is to provide a kind of raising ceramic particle
2o
3, SiO
2, Y
2o
3, ZrO
2, SiC, TiC and similar ceramic particle) method of reinforced Al matrix composite sintered density.The party's ratio juris is: B under high temperature
2o
3chemical reaction can be there is and form spinel structure material with nearly all ceramic oxide particle, the oxide film on carbide ceramic particles surface, the oxide film etc. of metal powder surface.B is there is between Al powder and ceramic particle
2o
3time, in particle reinforce Al based composites sintering process, B on the one hand
2o
3react with ceramic particle or particle surface oxide film, on the other hand B
2o
3with the Al on Al powder particles surface
2o
3reaction, thus the interface cohesion strengthening ceramic particle and Al matrix, make Composite Sintering density, physicals and mechanical property increase substantially.Consult the documents and materials of nearly ten years, find do not have scholar to study the method.
The technical solution adopted in the present invention is: adopt water to configure boric acid solution as solvent, a certain amount of ceramic particle is joined in boric acid solution and fully stirs, the ceramic particle of surface modification is obtained after super-dry, calcining and grinding, mixing, compacting, sintering process is adopted to prepare high-compactness ceramic particle reinforced Al matrix composite, utilize the surface reaction acceleration of sintering of boron oxide and Al matrix and ceramic particle in sintering process, improve sintered density.
Improve a method for ceramic particle reinforced Al matrix composite sintered density, comprise following processing step:
1, boric acid solution is prepared: adopt water as solvent, under electric blender effect, prepare the boric acid solution that boric acid massfraction is 0.5% ~ 20%, water-bath 40 ~ 90 DEG C heating, promote boric acid rapid solution, for the surface treatment of ceramic particle.
2, the modification of ceramic grain surface
In solution, add the ceramic particle of certain mass, the mass ratio of boric acid and ceramic particle is 0.002 ~ 0.093, utilizes electric blender to stir, churning time is 30 ~ 60min, then drying, calcining, grinding are carried out to sample, obtain the ceramic particle of surface modification, make wherein B
2o
3massfraction be 0.1% ~ 5%.Drying temperature is 160 ~ 200 DEG C, and guarantee that boric acid dewaters and not volatile completely, calcining temperature is 450 DEG C ~ 600 DEG C, and calcination time is 2 ~ 3h, guarantees the B after melting
2o
3there is good mobility, make it be uniformly distributed at ceramic grain surface.
3, aluminium powder and ceramic particle is mixed
V-Mixer, cone-type mixer or three-dimensional mixer etc. is adopted to mix in modified ceramic particle and Al powder, adding appropriate acetone during mixing prevents ball material from boning, ball material volume ratio is not more than 3:1, prevent ceramic grain surface from wearing and tearing, mixing time is 10 ~ 24h, in powder mix, ceramic particle volume fraction is 1% ~ 30%, is then sifted out by powder mix and carries out drying.
4, densification
Adopt mold pressing or isostatic cool pressing to carry out press forming to mixed powder, mold pressing pressing pressure is 200 ~ 700MPa, and the dwell time is 10 ~ 60s; Isostatic cool pressing pressure is 80 ~ 200MPa, and the dwell time is 1 ~ 60min;
Employing be rapidly heated electric furnace sintering, sinter in high-purity N
2carry out in atmosphere, sintering temperature is 500 ~ 670 DEG C, and soaking time is 2 ~ 8h, and insulation terminates rear furnace cooling.
Adopt above technical scheme, the invention has the advantages that:
1, the higher ceramic particle reinforced Al matrix composite of sintered density can be obtained at a relatively low sintering temperature, and composite material strength improves greatly;
2, abundant raw material is easy to get, with low cost, simple to operate.
Accompanying drawing explanation
Fig. 1 is the process flow sheet that the present invention prepares high-compactness ceramic particle reinforced Al matrix composite
Specific embodiments
Embodiment 1:
Prepare the SiC particle reinforce Al based composites that ceramic particle volume fraction is 15%, carry out as follows:
1, boric acid solution is configured
Using water as solvent, under electric blender effect, configure the boric acid solution that boric acid massfraction is 5%, water-bath 40 DEG C heating;
2, the modification of SiC particle surface
SiC particle is added in above-mentioned solution, the mass ratio of boric acid and SiC is 0.018, electric blender is utilized to stir, churning time is 30min, then carries out drying, calcining, grinding, and drying temperature is 160 DEG C, calcining temperature is 450 DEG C, calcination time is 2h, obtains the SiC particle of surface modification, wherein B
2o
3massfraction be 1%;
3, aluminium powder and SiC particle is mixed
V-Mixer is adopted to mix in modified SiC particle and Al powder, adding appropriate acetone during mixing prevents ball material from boning, and ball material volume ratio adopts 2:1, and mixing time is 12h, in powder mix, SiC grain volume fraction is 15%, is sifted out by powder mix and carry out drying after mixing terminates;
4, densification
Above-mentioned mixed powder is adopted compacting sintering technique, obtains the SiC particle reinforce Al based composites of high-compactness.
1) suppress: adopt die forming, mold pressing pressing pressure is 300MPa, and the dwell time is 20s;
2) sinter: adopt the electric furnace sintering that is rapidly heated, sinter in high-purity N
2carry out in atmosphere, sintering temperature is 600 DEG C, and soaking time is 2h, and insulation terminates rear furnace cooling.
Embodiment 2:
Prepare the Al that ceramic particle volume fraction is 20%
2o
3particle reinforce Al based composites, carries out as follows:
1, boric acid solution is configured
Using water as solvent, under electric blender effect, configure the boric acid solution that boric acid massfraction is 10%, water-bath 50 DEG C heating;
2, Al
2o
3particle surface modification
Al is added in above-mentioned solution
2o
3particle, boric acid and Al
2o
3mass ratio be 0.055, utilize electric blender to stir, churning time is 40min, makes Al
2o
3particle mixes with solution.Then carry out drying, calcining, grinding, drying temperature is 170 DEG C, and calcining temperature is 500 DEG C, and calcination time is 3h, obtains the Al of surface modification
2o
3particle, wherein B
2o
3massfraction be 3%;
3, aluminium powder and Al is mixed
2o
3particle
By modified Al
2o
3particle and Al powder adopt V-Mixer to mix, and add appropriate acetone and prevent ball material from boning during mixing, and ball material volume ratio adopts 2:1, and mixing time is 15h, Al in powder mix
2o
3grain volume fraction is 20%, is sifted out by powder mix and carry out drying after mixing terminates;
4, densification
Above-mentioned mixed powder is adopted compacting sintering technique, obtains the Al of high-compactness
2o
3particle reinforce Al based composites.
1) suppress: adopt cold isostatic compaction, pressing pressure is 100MPa, and the dwell time is 2min;
2) sinter: adopt the electric furnace sintering that is rapidly heated, sinter in high-purity N
2carry out in atmosphere, sintering temperature is 620 DEG C, and soaking time is 3h, and insulation terminates rear furnace cooling.
Embodiment 3:
Prepare the SiO that ceramic particle volume fraction is 30%
2particle reinforce Al based composites, carries out as follows:
1, boric acid solution is configured
Using water as solvent, under electric blender effect, configure the boric acid solution that boric acid massfraction is 20%, water-bath 80 DEG C heating;
2, SiO
2the modification of particle surface
SiO is added in above-mentioned solution
2particle, boric acid and SiO
2mass ratio be 0.093, utilize electric blender to stir, churning time is 50min, makes SiO
2particle mixes with solution.Then carry out drying, calcining, grinding, drying temperature is 180 DEG C, and calcining temperature is 550 DEG C, and soaking time is 3h, obtains the SiO of surface modification
2particle, wherein B
2o
3massfraction be 5%;
3, aluminium powder and SiO is mixed
2particle
By modified SiO
2particle and Al powder adopt V-Mixer to mix, and add appropriate acetone and prevent ball material from boning during mixing, and ball material volume ratio adopts 1:1, and mixing time is 20h, SiO in powder mix
2grain volume fraction is 30%, is sifted out by powder mix and carry out drying after mixing terminates;
4, densification
Above-mentioned mixed powder is adopted compacting sintering technique, obtains the SiO of high-compactness
2particle reinforce Al based composites.
1) suppress: adopt cold isostatic compaction, pressing pressure is 200MPa, and the dwell time is 3min;
2) sinter: adopt the electric furnace sintering that is rapidly heated, sinter in high-purity N
2carry out in atmosphere, sintering temperature is 650 DEG C, and soaking time is 5h, and insulation terminates rear furnace cooling.
Claims (4)
1. improve a method for ceramic particle reinforced Al matrix composite sintered density, it is characterized in that: comprise following processing step
1) configure boric acid solution: configure boric acid solution using water as solvent, under electric blender effect, adopt heating in water bath, promote that boric acid dissolves;
2) ceramic grain surface modification: the ceramic particle of certain mass is placed in above-mentioned solution for continuous and stirs, stirrer rotating speed controls at 100rad/min ~ 350rad/min, then drying, calcining are carried out to sample, calcining temperature is 450 DEG C ~ 600 DEG C, calcination time is 2 ~ 3h, obtains the ceramic particle of surface modification after grinding;
3) densification: mixed with Al powder by the cladding powder of certain volume mark, adopts compacting sintering technique, obtains the ceramic particle reinforced Al matrix composite that sintered density significantly improves.
2. the method for raising ceramic particle reinforced Al matrix composite sintered density according to claim 1, is characterized in that: the technique of described configuration boric acid solution is:
Adopt water as solvent, configuration boric acid massfraction is the boric acid liquation of 0.5% ~ 20%, and bath temperature is 40 DEG C ~ 90 DEG C.
3. the method for raising ceramic particle reinforced Al matrix composite sintered density according to claim 1, is characterized in that: described ceramic grain surface modified technique is:
The ceramic particle of certain mass is placed in above-mentioned solution for continuous to stir, the mass ratio of boric acid and ceramic particle is 0.002 ~ 0.093, then sample is carried out drying, calcining, calcining temperature is 450 DEG C ~ 600 DEG C, calcination time is 2 ~ 3h, obtain the ceramic particle of surface modification after grinding, make the massfraction of wherein boron oxide be 0.1% ~ 5%.
4. the method for raising ceramic particle reinforced Al matrix composite sintered density according to claim 1, is characterized in that: described mixing compacting sintering technique is:
1) mix: adopt V-Mixer, cone-type mixer or three-dimensional mixer to mix modified ceramic powder and Al powder, appropriate acetone is added in system, prevent ball material from boning, ball material volume ratio is not more than 3:1, the mixed time is 10 ~ 24h, the volume fraction of ceramic particle in powder mix is 1% ~ 30%, is then sifted out by powder mix and carries out drying;
2) suppress: adopt mold pressing or isostatic cool pressing, mold pressing pressing pressure is 200MPa ~ 700MPa, and the dwell time is 10 ~ 60s; Isostatic cool pressing pressure is 80 ~ 200MPa, and the dwell time is 1 ~ 60min;
3) sinter: adopt the electric furnace sintering that is rapidly heated, sintering atmosphere is high-purity N
2, sintering temperature is 500 DEG C ~ 670 DEG C, and soaking time is 2 ~ 8h, then furnace cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510472773.4A CN105002385B (en) | 2015-08-04 | 2015-08-04 | Method for increasing sintering density of ceramic particle enhanced Al-based composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510472773.4A CN105002385B (en) | 2015-08-04 | 2015-08-04 | Method for increasing sintering density of ceramic particle enhanced Al-based composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105002385A true CN105002385A (en) | 2015-10-28 |
| CN105002385B CN105002385B (en) | 2017-05-17 |
Family
ID=54375244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510472773.4A Expired - Fee Related CN105002385B (en) | 2015-08-04 | 2015-08-04 | Method for increasing sintering density of ceramic particle enhanced Al-based composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105002385B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114778247A (en) * | 2022-04-26 | 2022-07-22 | 鞍钢集团矿业有限公司 | Preparation method of iron ore sample tablet for detection of fluorescence analyzer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0741883A (en) * | 1993-07-27 | 1995-02-10 | Akebono Brake Res & Dev Center Ltd | Aluminum-based composite material |
| CN104046825A (en) * | 2014-07-04 | 2014-09-17 | 江苏大学 | Preparation method of in-situ particle reinforced aluminum-based composite material |
-
2015
- 2015-08-04 CN CN201510472773.4A patent/CN105002385B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0741883A (en) * | 1993-07-27 | 1995-02-10 | Akebono Brake Res & Dev Center Ltd | Aluminum-based composite material |
| CN104046825A (en) * | 2014-07-04 | 2014-09-17 | 江苏大学 | Preparation method of in-situ particle reinforced aluminum-based composite material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114778247A (en) * | 2022-04-26 | 2022-07-22 | 鞍钢集团矿业有限公司 | Preparation method of iron ore sample tablet for detection of fluorescence analyzer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105002385B (en) | 2017-05-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Liu et al. | Laser additive manufacturing and homogeneous densification of complicated shape SiC ceramic parts | |
| CN104073674B (en) | A kind of preparation method of Graphene aluminum matrix composite | |
| GB2539861B (en) | Method for reinforcing metal material by means of graphene | |
| Song et al. | Performance optimization of complicated structural SiC/Si composite ceramics prepared by selective laser sintering | |
| CN104387073B (en) | The method of ultra-fine high tenacity thyrite is manufactured based on reaction sintering | |
| CN103343274B (en) | High-thermal-conductivity graphite-aluminium strengthens aluminum graphite composite and preparation technology thereof | |
| CN109516811A (en) | A kind of ceramics and its preparation method and application with polynary high entropy | |
| CN102586703B (en) | Method for preparing graphite whisker reinforced aluminum matrix composite material | |
| CN103589894B (en) | Method for preparing orientation-reinforced Cu composite material for two-dimensional heat dissipation | |
| CN103343266B (en) | High-thermal-conductivity graphite-high silicon aluminium-based composite material and preparation process for same | |
| CN103924119A (en) | Ultrahigh heat conduction graphite flake/copper composite material and preparation method thereof | |
| Asadipanah et al. | Production of Al–ZrB 2 nano-composites by microwave sintering process | |
| CN108384979B (en) | Hybrid reinforced copper-based composite material and preparation method thereof | |
| CN110273078A (en) | A kind of magnetism (FeCoNi1.5CuBmREn)P/ Al composite material and preparation method | |
| CN110629061A (en) | Preparation method of aluminum-based composite material with controllable in-situ nano aluminum oxide content | |
| CN112267039A (en) | Preparation process of high volume fraction silicon carbide particle reinforced aluminum matrix composite | |
| CN103820691B (en) | A kind of normal pressure-sintered preparation method of FeAl/TiC matrix material | |
| Rajabi et al. | Microwave-assisted sintering of Al–ZrO 2 nano-composites | |
| CN105000889B (en) | Method for preparing iron-containing SiCN ceramic by using precursor conversion method | |
| CN104326752B (en) | A kind of low-temperature atmosphere-pressure liquid phase sintering preparation method of SiC ceramic | |
| CN103194631B (en) | Preparation method of high-volume fraction alumina ceramic particle enhanced composite material | |
| CN110747378A (en) | Ti3AlC2-Al3Ti dual-phase reinforced Al-based composite material and hot-pressing preparation method thereof | |
| CN105002385A (en) | Method for increasing sintering density of ceramic particle enhanced Al-based composite material | |
| Yu et al. | Fabrication of Si3N4–SiC/SiO2 composites using 3D printing and infiltration processing | |
| CN106966744A (en) | A kind of fibre reinforced alumina ceramic composite material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170517 Termination date: 20210804 |