CN101139666A - Method for preparing SiC particle reinforced foamed aluminium radical composite material - Google Patents
Method for preparing SiC particle reinforced foamed aluminium radical composite material Download PDFInfo
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- CN101139666A CN101139666A CNA2007100474845A CN200710047484A CN101139666A CN 101139666 A CN101139666 A CN 101139666A CN A2007100474845 A CNA2007100474845 A CN A2007100474845A CN 200710047484 A CN200710047484 A CN 200710047484A CN 101139666 A CN101139666 A CN 101139666A
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Abstract
The invention relates to a preparation method for a SiC particle reinforced foam aluminum based composite material, which comprises the procedures of: heating and melting magnesium with the quality points accounting for the total alley of 1 to 3 per cent, 6 to 8 per cent of silicon, remainder aluminum and 10 to 20 per cent SiC particles into aluminum alloy solution, carrying out electromagnetic agitating evenly; then adding foaming agent with the quality points accounting for the total alley of 1 to 3 per cent and preserving heat and foaming for 3 to 5 mins after agitating evenly the foaming agent; cooling the molten aluminum after becoming steadily so as to achieve the SiC particle reinforced foam aluminum based composite material with even hole structure and high porosity after the aluminum alloy solution foam is cooled and solidified. The method, by adding SiCp into the melted aluminum alloy solution, which, on one hand, increases the viscosity of the molten alloy so as to prevent the bubbles dissolved from the foaming agent from floating upward and prolong the lives of the bubbles, on another hand, SiCp is able to improve the strength of the foam aluminum. The bubbles take SiCp as a core and grow and then are cooled in all directions at the same time to eliminate the solidification of the bubbles , thus achieving foam aluminum of high porosity and even hole structure. By using an electromagnetic for agitating, the burning loss in the agitating blade can be avoided, which is favorable for controlling the chemical components of the alloy.
Description
Technical field
The present invention relates to a kind of preparation method of SiC particle reinforced aluminum foam matrix composite material.
Background technology
Foamed aluminium has the feature of vesicular structure and metal simultaneously, becomes one of current material area research focus with its excellent physicals, chemical property, mechanical property, multi-functional compatible performance and its recyclable performance etc.Particles reiforced metal-base composition also is a kind of new type of metal material of development in recent years, has higher specific tenacity, specific rigidity, Young's modulus, wear resistance and low premium propertiess such as thermal expansivity.If both are combined into the SiC particle reinforced aluminum foam matrix composite material, have the advantage of two kinds of materials simultaneously concurrently, then will have more wide application prospect.
Stirring means is to adopt mechanical stirring mostly in the existing SiC particle reinforced aluminum foam matrix composite material preparation process, drives the high speed rotating of aluminium alloy melt by the rotation of stirring rake, to reach the purpose of disperseing tackifier and whipping agent.Though this method is simple, whole whipping process not only is exposed to aluminium liquid has wasted heat energy in the air, and stirring rake is easy to be corroded in the high temperature aluminium alloys melt, make stir ineffective; In addition, often change stirring rake and can cause the expensive and inefficient of production again.
In 600-800 ℃ of interval, the contact angle θ of SiC particle and aluminium liquid is about 120 °, illustrates that the wettability of SiC particle and aluminium liquid is bad, if unprocessed direct adding will produce self-agglomeration, cause compound difficulty, intergranular easily forms micro-cavity, mechanical properties decrease; TiH with unprocessed mistake
2When joining in the aluminium liquid, because temperature of aluminum liquid is very high, TiH
2Add back bubble rapidly, be difficult to obtain uniform foam materials.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of SiC particle reinforced aluminum foam matrix composite material.
For achieving the above object, the present invention adopts following technical scheme:
A kind of preparation method of SiC particle reinforced aluminum foam matrix composite material is characterized in that the concrete operations step of this method is as follows:
A, preparation of raw material: be formulated as follows raw material by mass percentage: magnesium 1～3%, silicon 6～8%, SiC 10～20%, whipping agent TiH
21～3%, the aluminium surplus;
B, above-mentioned load weighted magnesium, silicon and aluminium are heated to fusing, form molten aluminium alloy, and remain on 650-700 ℃, under the induction stirring SiC is added in the molten aluminium alloy, make SiC thorough mixing in aluminium alloy melt even;
Under c, the induction stirring, with whipping agent TiH
2Be added in the step b gained liquation, and whipping agent is mixed in liquation;
D, step c gained liquation is cooled off after 3-5 minute 600 ℃-700 ℃ insulations, promptly obtain the SiC particle reinforced aluminum foam matrix composite material after this liquation solidifies.
Above-mentioned SiC is through pretreated particle, its granularity 1000 orders ± 100 orders, and concrete pretreatment process is: be incubated 2 hours down at 500 ℃, be incubated 3 hours down at 800 ℃ again.Can remove SiC particle surface adsorbed organic matter, impurity, water vapour and other gas like this, and generate the oxide film of one deck densification at the SiC particle surface, thus improved the SiC particulate dispersed and with the wettability of aluminium liquid.
Above-mentioned whipping agent TiH
2Granularity be 200 orders ± 50 orders, 500 ℃ ± 30 ℃ down insulations 2 hours, can make TiH
2Particle surface generation oxidizing reaction generates one deck oxide film, to TiH
2Tangible slow releasing function is arranged
Compared with prior art, the inventive method has following conspicuous outstanding feature and marked improvement: this method adds SiC in the molten aluminium alloy of fusing
p, the viscosity of alloy melt is increased, thereby stop bubble floating that whipping agent decomposes and the life-span that prolongs bubble; On the other hand, SiC
pCan also play the effect that strengthens foamed aluminium intensity.These bubbles are with SiC
pFor the forming core core and grow up, adopt then each to while refrigerative mode to eliminate coagulation defect, obtain porosity height, the uniform foamed aluminium of pore structure.Adopt induction stirring, can avoid the scaling loss of agitating vane, help controlling the chemical ingredients of alloy.
Embodiment
Embodiment one: get the magnesium that accounts for alloy total amount massfraction 1.5%, account for the silicon of alloy total amount massfraction 6.5% and the aluminium of surplus, be heated to the fusing and 700 ℃ of insulations, after making temperature uniform and stable, add and pretreated account for alloy total amount massfraction 10%SiC particle to molten aluminium alloy, carry out induction stirring, treat that SiC particle thorough mixing in aluminium alloy melt is even, add the whipping agent that accounts for alloy total amount massfraction 1.5% and carry out induction stirring, whipping agent is mixed in aluminium alloy melt, after whipping agent mixes, place holding furnace 680 ℃ of insulations 3 minutes in crucible, make whipping agent continue foaming.After treating that the molten aluminium growth is stable, adopt each after cooling off simultaneously, making aluminium alloy melt foam cooled and solidified, to obtain the SiC particle reinforced aluminum foam matrix composite material.Its performance is as follows:
Mean density: 0.637g/cm
3,
Porosity: 76.0%,
Average single hole diameter: 1.5mm,
Maximum diameter of hole and minimum-value aperture poor: 1.2mm,
Compression yield strength σ
s=16.8MPa.
Embodiment two: get the magnesium that accounts for alloy total amount massfraction 2.8%, account for the silicon of alloy total amount massfraction 7.5% and the aluminium of surplus, be heated to the fusing and 680 ℃ of insulations, after making temperature uniform and stable, add and pretreated account for alloy total amount massfraction 15%SiC particle to molten aluminium alloy, carry out induction stirring, treat that SiC particle thorough mixing in aluminium alloy melt is even, add the whipping agent that accounts for alloy total amount massfraction 2.5% and carry out induction stirring, whipping agent is mixed in aluminium alloy melt, after whipping agent mixes, place holding furnace 650 ℃ of insulations 5 minutes in crucible, make whipping agent continue foaming.After treating that the molten aluminium growth is stable, adopt each after cooling off simultaneously, making aluminium alloy melt foam cooled and solidified, to obtain the SiC particle reinforced aluminum foam matrix composite material.Its performance:
Mean density: 0.528g/cm
3,
Porosity: 80.4%,
Average single hole diameter: 1.4mm,
Maximum diameter of hole and minimum-value aperture poor: 1.0mm,
Compression yield strength σ
s=21.5MPa.
1134.9m
2/g。
Claims (3)
1. the preparation method of a SiC particle reinforced aluminum foam matrix composite material is characterized in that the concrete operations step of this method is as follows:
A, preparation of raw material: be formulated as follows raw material by mass percentage: magnesium 1～3%, silicon 6～8%, SiC 10～20%, whipping agent TiH
21～3%, the aluminium surplus;
B, above-mentioned load weighted magnesium, silicon and aluminium are heated to fusing, form molten aluminium alloy, and remain on 650-700 ℃, under the induction stirring SiC is added in the molten aluminium alloy, make SiC thorough mixing in aluminium alloy melt even;
Under c, the induction stirring, with whipping agent TiH
2Be added in the step b gained liquation, and whipping agent is mixed in liquation;
D, step c gained liquation is cooled off after 3-5 minute 600 ℃-700 ℃ insulations, promptly obtain the SiC particle reinforced aluminum foam matrix composite material after this liquation solidifies.
2. the preparation method of a kind of SiC particle reinforced aluminum foam matrix composite material according to claim 1, it is characterized in that described SiC is the pretreated particle of process, its granularity is 1000 orders ± 100 orders, concrete pretreatment process is: be incubated 2 hours down at 500 ℃, be incubated 3 hours down at 800 ℃ again.
3. the preparation method of a kind of SiC particle reinforced aluminum foam matrix composite material according to claim 1 is characterized in that described whipping agent TiH
2Granularity be 200 orders ± 50 orders, 500 ℃ ± 30 ℃ down insulations 2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100474845A CN101139666A (en) | 2007-10-26 | 2007-10-26 | Method for preparing SiC particle reinforced foamed aluminium radical composite material |
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|---|---|---|---|
| CNA2007100474845A CN101139666A (en) | 2007-10-26 | 2007-10-26 | Method for preparing SiC particle reinforced foamed aluminium radical composite material |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660067B (en) * | 2009-09-22 | 2012-01-11 | 太原科技大学 | Foam aluminum alloy strengthened by ceramic balls and preparing method thereof |
| CN104372195A (en) * | 2014-11-17 | 2015-02-25 | 界首市一鸣新材料科技有限公司 | Process method for improving uniformity of foamed aluminum by adopting flaky foamed ceramics |
| CN105039806A (en) * | 2015-07-14 | 2015-11-11 | 夏志清 | Bumper strip for automotive body |
| CN105040610A (en) * | 2015-07-14 | 2015-11-11 | 夏志清 | Road crash barrier board |
| CN105153726A (en) * | 2015-09-24 | 2015-12-16 | 安徽卓越电力设备有限公司 | Aluminum alloy bottom plate used for preassembled substation box |
| CN106222469A (en) * | 2016-09-14 | 2016-12-14 | 郑州峰泰纳米材料有限公司 | The preparation method of enhancement mode foam aluminium alloy |
| CN106521252A (en) * | 2016-12-07 | 2017-03-22 | 中南大学 | Silicon carbide particle reinforcement aluminum-based composite for train brake disc and preparation method |
| CN107675015A (en) * | 2017-10-11 | 2018-02-09 | 中国民航大学 | A kind of closed pore CNTs/Al Si composite foam materials and preparation method thereof |
| CN107760905A (en) * | 2017-10-23 | 2018-03-06 | 江苏大学 | A kind of ZrB2The preparation method of particle reinforced aluminum foam/aluminium alloy |
| CN109811172A (en) * | 2019-03-04 | 2019-05-28 | 东北大学 | Two kinds of particles coordinate system based on different wetting for foamed aluminium method and device |
| CN113481403A (en) * | 2021-06-22 | 2021-10-08 | 安徽省新方尊自动化科技有限公司 | High-strength wear-resistant foamed aluminum composite material and preparation method thereof |
| CN115679163A (en) * | 2022-11-22 | 2023-02-03 | 山东创新金属科技有限公司 | Aluminum alloy material for automobile anti-collision frame and preparation method thereof |
-
2007
- 2007-10-26 CN CNA2007100474845A patent/CN101139666A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660067B (en) * | 2009-09-22 | 2012-01-11 | 太原科技大学 | Foam aluminum alloy strengthened by ceramic balls and preparing method thereof |
| CN104372195A (en) * | 2014-11-17 | 2015-02-25 | 界首市一鸣新材料科技有限公司 | Process method for improving uniformity of foamed aluminum by adopting flaky foamed ceramics |
| CN105039806A (en) * | 2015-07-14 | 2015-11-11 | 夏志清 | Bumper strip for automotive body |
| CN105040610A (en) * | 2015-07-14 | 2015-11-11 | 夏志清 | Road crash barrier board |
| CN105153726A (en) * | 2015-09-24 | 2015-12-16 | 安徽卓越电力设备有限公司 | Aluminum alloy bottom plate used for preassembled substation box |
| CN106222469A (en) * | 2016-09-14 | 2016-12-14 | 郑州峰泰纳米材料有限公司 | The preparation method of enhancement mode foam aluminium alloy |
| CN106521252A (en) * | 2016-12-07 | 2017-03-22 | 中南大学 | Silicon carbide particle reinforcement aluminum-based composite for train brake disc and preparation method |
| CN106521252B (en) * | 2016-12-07 | 2018-01-09 | 中南大学 | Train brake disk enhancing aluminum-base composite material by silicon carbide particles and preparation method |
| CN107675015A (en) * | 2017-10-11 | 2018-02-09 | 中国民航大学 | A kind of closed pore CNTs/Al Si composite foam materials and preparation method thereof |
| CN107760905A (en) * | 2017-10-23 | 2018-03-06 | 江苏大学 | A kind of ZrB2The preparation method of particle reinforced aluminum foam/aluminium alloy |
| CN109811172A (en) * | 2019-03-04 | 2019-05-28 | 东北大学 | Two kinds of particles coordinate system based on different wetting for foamed aluminium method and device |
| CN109811172B (en) * | 2019-03-04 | 2020-07-14 | 东北大学 | Method and device for preparing foamed aluminum based on cooperation of two particles with different wettabilities |
| CN113481403A (en) * | 2021-06-22 | 2021-10-08 | 安徽省新方尊自动化科技有限公司 | High-strength wear-resistant foamed aluminum composite material and preparation method thereof |
| CN115679163A (en) * | 2022-11-22 | 2023-02-03 | 山东创新金属科技有限公司 | Aluminum alloy material for automobile anti-collision frame and preparation method thereof |
| CN115679163B (en) * | 2022-11-22 | 2023-09-22 | 山东创新金属科技有限公司 | Aluminum alloy material for automobile anti-collision frame and preparation method thereof |
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