CN104651655A - Preparation method of graphite-reinforced aluminum-based composite material - Google Patents
Preparation method of graphite-reinforced aluminum-based composite material Download PDFInfo
- Publication number
- CN104651655A CN104651655A CN201410754129.1A CN201410754129A CN104651655A CN 104651655 A CN104651655 A CN 104651655A CN 201410754129 A CN201410754129 A CN 201410754129A CN 104651655 A CN104651655 A CN 104651655A
- Authority
- CN
- China
- Prior art keywords
- graphite
- powder
- preparation
- hot pressing
- composite material
- 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.)
- Pending
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 26
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000002131 composite material Substances 0.000 title claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 34
- 239000010439 graphite Substances 0.000 claims abstract description 34
- 239000000843 powder Substances 0.000 claims abstract description 23
- 239000011159 matrix material Substances 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 7
- 239000000956 alloy Substances 0.000 claims abstract description 5
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 5
- 238000007731 hot pressing Methods 0.000 claims description 15
- 239000008187 granular material Substances 0.000 claims description 14
- 239000004411 aluminium Substances 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000011863 silicon-based powder Substances 0.000 claims description 6
- 238000000498 ball milling Methods 0.000 claims description 3
- 238000007872 degassing Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 239000006104 solid solution Substances 0.000 claims description 3
- 238000007669 thermal treatment Methods 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract description 3
- 239000003082 abrasive agent Substances 0.000 abstract description 2
- 238000005245 sintering Methods 0.000 abstract 1
- 238000010792 warming Methods 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000009715 pressure infiltration Methods 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention provides a preparation method of a graphite-reinforced aluminum-based composite material, and belongs to the field of preparation of anti-abrasive materials. The invention provides a method for preparing a graphite-reinforced aluminum-based composite material which is uniform and disperse in particles, and relatively large in compactness, so as to solve the problem that graphite particles produced by an existing preparation method are relatively difficult to evenly disperse in an aluminum matrix. The preparation method comprises the following steps: directly adding Mg powder to matrix alloy powder to enhance the wettability between graphite and aluminum; and carrying out rapid warming and secondary hot-pressed sintering to prepare the graphite-reinforced aluminum-based composite material. According to the preparation method, the phenomenon of uneven dispersion of the graphite particles in an existing preparation method is solved; and the prepared graphite-reinforced aluminum-based composite material has relatively low friction coefficient and attrition rate.
Description
Technical field
The invention belongs to anti-abrasive material preparation field.
Background technology
Particle enhanced aluminum-based composite material, due to its excellent performance and more much lower than the cost of fiber reinforced aluminum matrix composites, becomes the focus of people's research in recent years.Graphite granule reinforced aluminum matrix composites combines graphite and aluminium advantage separately, has higher specific tenacity, specific rigidity, has suitable frictional coefficient and the excellent physical and mechanical property such as high wear resistance and low thermal expansivity concurrently.Be mainly used in hydraulic oil pump, car combustion engine piston, compressor sliding blade, cylinder wall, automotive hub, the application scenario of the wear resistant friction reducings such as the parts with frication pair of sliding surface bearing, not only relate to traditional military and aerospace field, and be one of potential material of motor vehicles for civilian use industry and other wear-resistant occasions, having broad application prospects. the preparation method of graphitized alumina based composites has multiple, mainly adopt extrusion casting both at home and abroad at present, Pressure Infiltration, the techniques such as Semi-solid Stirring, the preparation temperature of these methods is all more than the fusing point of aluminium, graphite in matrix material has rising phenomenon in various degree, make graphite granule more difficult dispersed in aluminum substrate.
Summary of the invention
The object of this invention is to provide a kind of graphite granule that solves and disperse uneven Graphite Reinforced Aluminum based composites preparation method.
The present invention is achieved by the following technical programs: a kind of Graphite Reinforced Aluminum based composites preparation method, using Al-0.7Si-1.2Mg alloy as matrix, its composition is: SiO.7%, Mg1.2%, Al surplus, mass content of graphite is 20%, weigh Al powder in proportion, Si powder, Mg powder, directly load in ball grinder together with graphite granule, ball milling 4h under high pure nitrogen protection, mixed batching loads the graphite jig of diameter 25mm, vacuum-drying degasification again after colding pressing, and the hot pressing that is rapidly heated, hot pressing temperature is 610 ~ 620 DEG C, soaking time 10min, pressure is 20MPa, after the sample demoulding after a hot pressing, secondary hot pressing is carried out in the graphite jig reinstalling diameter 30mm, hot pressing temperature is 610 ~ 620 DEG C, insulation 10min, pressure is 30MPa, obtain sample and carry out T6 thermal treatment, 525 DEG C of solid solution 4h, 170 DEG C of timeliness 10h, obtain finished product.
Described Al powder, Si powder, Mg powder and graphite granule. starting powder purity is all greater than 99.0%, and the mean particle size of aluminium powder is 80 μm, and graphite granule purity is greater than 99.85%, granularity (≤30 μm) >=95%.
The present invention has following beneficial effect:
This preparation method obtained even particulate dispersion and the larger matrix material of density under lower than the melting temperature of aluminium, obtained friction coefficient of composite material is 0.17, and wear rate is 0.5 × 10
-3~ 2.1 × 10
-3mm
3/ m.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described.
Specific embodiment: the Al powder provided, Si powder, Mg powder and graphite granule. starting powder purity is all greater than 99.0%, and the mean particle size of aluminium powder is 80 μm, and graphite granule purity is greater than 99.85%, granularity (≤30 μm) >=95%.
Using Al-0.7Si-1.2Mg alloy as matrix, its composition is: SiO.7%, Mg1.2%, Al surplus, mass content of graphite is 20%, weigh Al powder in proportion, Si powder, Mg powder, directly load in ball grinder together with graphite granule, ball milling 4h under high pure nitrogen protection, mixed batching loads the graphite jig of diameter 25mm, vacuum-drying degasification again after colding pressing, and the hot pressing that is rapidly heated, hot pressing temperature is 610 ~ 620 DEG C, soaking time 10min, pressure is 20MPa, after the sample demoulding after a hot pressing, secondary hot pressing is carried out in the graphite jig reinstalling diameter 30mm, hot pressing temperature is 610 ~ 620 DEG C, insulation 10min, pressure is 30MPa, obtain sample and carry out T6 thermal treatment, 525 DEG C of solid solution 4h, 170 DEG C of timeliness 10h, obtain finished product.
Microstructure observation is carried out to matrix material, can find out that matrix material has the weave construction of uniformity, graphite granule is evenly distributed, without obvious hole with the defect such as to be mingled with, sample has higher relative density, more than 96%, therefore interpolation Mg powder effectively enhances the wettability between graphite and aluminium, and adopts the second heat platen press that is rapidly heated can prepare the graphitized alumina based composites of uniform texture.
PCD-300A frictional abrasion surface pattern tester carries out frictional wear experiment to the matrix material of preparation, and obtaining friction coefficient of composite material is 0.17, and its wear rate is 0.5 × 10
-3~ 2.1 × 10
-3mm
3/ m.
The method of the invention, in matrix alloy powder, directly add Mg powder to strengthen the wettability between graphite and aluminium, solve graphite granule dispersion uneven, the matrix material of preparation has lower frictional coefficient and wear rate.
Above content is the further description done the present invention in conjunction with concrete embodiment, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (2)
1. a Graphite Reinforced Aluminum based composites preparation method, it is characterized in that: using Al-0.7Si-1.2Mg alloy as matrix, its composition is: SiO.7%, Mg1.2%, Al surplus, mass content of graphite is 20%, weigh Al powder in proportion, Si powder, Mg powder, directly load in ball grinder together with graphite granule, ball milling 4h under high pure nitrogen protection, mixed batching loads the graphite jig of diameter 25mm, vacuum-drying degasification again after colding pressing, and the hot pressing that is rapidly heated, hot pressing temperature is 610 ~ 620 DEG C, soaking time 10min, pressure is 20MPa, after the sample demoulding after a hot pressing, secondary hot pressing is carried out in the graphite jig reinstalling diameter 30mm, hot pressing temperature is 610 ~ 620 DEG C, insulation 10min, pressure is 30MPa, obtain sample and carry out T6 thermal treatment, 525 DEG C of solid solution 4h, 170 DEG C of timeliness 10h, obtain finished product.
2. preparation method as claimed in claim 1, it is characterized in that: described Al powder, Si powder, Mg powder and graphite granule. starting powder purity is all greater than 99.0%, the mean particle size of aluminium powder is 80 μm, and graphite granule purity is greater than 99.85%, granularity (≤30 μm) >=95%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410754129.1A CN104651655A (en) | 2014-12-11 | 2014-12-11 | Preparation method of graphite-reinforced aluminum-based composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410754129.1A CN104651655A (en) | 2014-12-11 | 2014-12-11 | Preparation method of graphite-reinforced aluminum-based composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104651655A true CN104651655A (en) | 2015-05-27 |
Family
ID=53243291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410754129.1A Pending CN104651655A (en) | 2014-12-11 | 2014-12-11 | Preparation method of graphite-reinforced aluminum-based composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104651655A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106350710A (en) * | 2016-09-30 | 2017-01-25 | 柳州增程材料科技有限公司 | Preparation method of aluminum-magnesium alloy applied to automobile engines |
| CN109898001A (en) * | 2019-04-09 | 2019-06-18 | 太原理工大学 | A kind of preparation method of anti-corrosion SiC particles reinforced magnesium-based composite board |
| CN113789455A (en) * | 2021-08-31 | 2021-12-14 | 南昌大学 | High-strength high-thermal-conductivity aluminum-based composite material and preparation method thereof |
| CN116082047A (en) * | 2021-11-05 | 2023-05-09 | 天津大学 | Preparation method of heat dissipation in plane and high heat conduction orientation graphite plate outside plane constructed by hot pressing method |
-
2014
- 2014-12-11 CN CN201410754129.1A patent/CN104651655A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106350710A (en) * | 2016-09-30 | 2017-01-25 | 柳州增程材料科技有限公司 | Preparation method of aluminum-magnesium alloy applied to automobile engines |
| CN109898001A (en) * | 2019-04-09 | 2019-06-18 | 太原理工大学 | A kind of preparation method of anti-corrosion SiC particles reinforced magnesium-based composite board |
| CN113789455A (en) * | 2021-08-31 | 2021-12-14 | 南昌大学 | High-strength high-thermal-conductivity aluminum-based composite material and preparation method thereof |
| CN116082047A (en) * | 2021-11-05 | 2023-05-09 | 天津大学 | Preparation method of heat dissipation in plane and high heat conduction orientation graphite plate outside plane constructed by hot pressing method |
| CN116082047B (en) * | 2021-11-05 | 2024-05-07 | 天津大学 | Preparation method of heat dissipation in plane and high heat conduction orientation graphite plate outside plane constructed by hot pressing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103939509B (en) | A kind of Al/Sic and Cu/Sic composite materials friction pair for rail vehicle and preparation method thereof | |
| CN105328186B (en) | A kind of aluminum-based in-situ composite materials formed based on laser 3D printing and preparation method thereof | |
| CN102337423B (en) | A kind of preparation method of ceramic powder reinforced zinc aluminum alloy matrix composite material | |
| CN104848748B (en) | A kind of lightweight armor armour and preparation method thereof | |
| CN103572087B (en) | The preparation method of boron carbide particles reinforced aluminum matrix composites | |
| CN109321767B (en) | A method for preparing hybrid particle reinforced aluminum matrix composite material by composite strengthening method | |
| CN102225461A (en) | A kind of preparation method of ceramic particle selectively reinforced aluminum matrix composite material | |
| CN103194630A (en) | Preparation method of SiCp/Al composite material with high volume fraction | |
| CN103866165A (en) | Isotropical high-strength high-toughness particle reinforced aluminium-based composite material and preparation method thereof | |
| CN113718142B (en) | A kind of double-scale hybrid particle reinforced aluminum matrix composite material for automobile and preparation method thereof | |
| CN105236983A (en) | Method for preparing high-speed train pantograph carbon sliding plate through new process | |
| CN103343274A (en) | High-thermal-conductivity graphite-aluminium composite material reinforced by diamond particles in hybrid manner and preparation process for same | |
| CN105200261B (en) | A three-dimensional space ordered structure graphite/aluminum composite material and its preparation method | |
| CN104651655A (en) | Preparation method of graphite-reinforced aluminum-based composite material | |
| CN106367683A (en) | Light and high-thermal conductivity Fe-Al-based alloy and preparation method thereof | |
| CN104387069B (en) | Preparation method of carbon/silicon carbide friction material for airplane brake disc | |
| CN103273057A (en) | Cr2AlC reinforced bronze-based brake pad material for high-speed railway and its preparation method | |
| CN104862575B (en) | A pressureless impregnation preparation method of Ti3AlC2/Fe-based composite material | |
| CN102029369A (en) | Method for preparing SiC particle-aluminum alloy composite material cylinder liner | |
| CN107641738B (en) | A kind of preparation method of molybdenum disulfide/aluminum composite material | |
| CN108315629A (en) | A kind of preparation method of Al/SiC ceramic-metal composites | |
| CN102277510A (en) | Mixing method for preparation of diamond enhanced metal matrix composite material | |
| CN104087878B (en) | A kind of preparation method of composite material for engine cylinder piston | |
| CN100491578C (en) | Preparation method of low modulus high damping amorphous carbon fiber aluminum matrix composite | |
| CN117385236A (en) | A fatigue-resistant discontinuous layered structure B4C/Al nanocomposite material and its preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150527 |
|
| WD01 | Invention patent application deemed withdrawn after publication |