CN1242080C - Zero pressure and permeation for preparation of carbon nanometer tube reinforced aluminum base composite material - Google Patents
Zero pressure and permeation for preparation of carbon nanometer tube reinforced aluminum base composite material Download PDFInfo
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- CN1242080C CN1242080C CN 200310109132 CN200310109132A CN1242080C CN 1242080 C CN1242080 C CN 1242080C CN 200310109132 CN200310109132 CN 200310109132 CN 200310109132 A CN200310109132 A CN 200310109132A CN 1242080 C CN1242080 C CN 1242080C
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Abstract
The present invention relates to a method for preparing a carbon nanometer tube reinforced aluminum based composite material by zero pressure and permeation. In the method, powders of carbon nanometer tubes, a magnesium powder and an aluminum power which have certain proportions are mixed by a mechanical mode or blended by ball milling under the protection of argon in a stainless steel tank, and then loaded into a stainless steel crucible or put in the stainless steel crucible after being molded into a prefabricated component; pure aluminium or an aluminium alloy is placed above a reinforced powder or the prefabricated component, and then, the pure aluminium or the aluminium alloy, and the reinforced powder or the prefabricated component are placed in a pipe furnace, heated in nitrogen atmosphere to a temperature of 750 to 1000 DEG C, insulated for a certain time, and taken out after being cooled. The present invention overcomes the defect of no infiltration of carbon nanometer tubes and molten aluminium, realizes the full permeation of carbon nanometer tubes and aluminum and the uniform distribution of carbon nanometer tubes in aluminium bases, has the advantages of controllable volume content of carbon nanometer tubes, simple process, low requirement for equipment, high density and near net shape of the obtained material, etc., and is favorable to the realization of commercial process.
Description
Technical field
The present invention relates to adopt pressureless penetration to prepare the method for CNT (carbon nano-tube) reinforced aluminum matrix composites.
Background technology
The Al based composites has advantages such as little, the corrosion-resistant and good processability of density, along with development of modern industry such as Aeronautics and Astronautics and automobile makings, demands for higher performance such as specific tenacity, specific rigidity, wear resistance, thermotolerance and antifatigue to this class material. the nanophase reinforced Al matrix composite is a kind of type material that in recent years develops rapidly, shows excellent physics and chemistry and mechanical property.CNT (carbon nano-tube) is a kind of novel self-composed monomolecular material, and its Young's modulus of theoretical calculation is up to 5TPa, and intensity is about 100 times of steel, and density has only 1/6 of steel, is the very high material of specific tenacity and specific rigidity.The toughness and the structural stability of CNT (carbon nano-tube) are fine. and CNT (carbon nano-tube) has minimum yardstick and excellent mechanical property, is that the ideal 1-dimention nano strengthens toughening material.Outstanding difficult point in the preparation of CNT (carbon nano-tube) reinforced aluminum matrix composites is that wettability is poor between CNT (carbon nano-tube) and the metal, so its preparation difficulty is bigger.Usually the method that adopts mainly contains at present: pressure sintering, vacuum suction casting technique, powder metallurgy sintered method, semi-solid casting method and utilization coating or surface deposition improve the method for wettability, but its limitation is respectively arranged.As pressure sintering and vacuum suction casting technique, need special high pressure and pumping equipment; The semi-solid state method, the wild phase ratio is restricted, and the particle homogeneity also is difficult to control; Powder metallurgic method is difficult to prepare big member.For a long time, both at home and abroad all be devoted to seek out a kind of practicality, simple and respond well technology.
Summary of the invention
The purpose of this invention is to provide a kind of method that adopts pressureless penetration to prepare the CNT (carbon nano-tube) reinforced aluminum matrix composites.
Method of the present invention may further comprise the steps:
1) powder with CNT (carbon nano-tube), magnesium powder, aluminium powder adopts mechanical system to mix or ball milling blend under the argon shield in stainless cylinder of steel, and wherein the volume content of CNT (carbon nano-tube) is 5%-20%, the magnesium powder: the volume ratio of aluminium powder is 1-5: 5-20;
2) become prefabricated component to put in the Stainless Steel Crucible blended powder molding;
3) fine aluminium or aluminium alloy are placed the top of prefabricated component, together insert them in the tube furnace then, be heated to 750 ℃ of-1000 ℃ of temperature under nitrogen atmosphere, be incubated 1-8 hour according to the size of prefabricated component volume, cooling is taken out and is promptly got CNT (carbon nano-tube) reinforced aluminum matrix composites of the present invention.
Above-mentioned CNT (carbon nano-tube) can be multiple-wall carbon nanotube or Single Walled Carbon Nanotube.
The present invention adopts the method for pressureless penetration, and promptly melt is under no external force effect, and the particle porous prefabricated component of the spontaneous infiltration of capillary pressure by infiltration causes forms matrix material.Overcome CNT (carbon nano-tube) and the shortcoming that fused aluminium does not soak into mutually, realized the abundant infiltration of CNT (carbon nano-tube) and aluminium, made CNT (carbon nano-tube) be evenly distributed in aluminum substrate, the CNT (carbon nano-tube) volume content is controlled, helps realizing suitability for industrialized production.The present invention also have technology simple, to equipment require low, the material density height that obtains, can near-net forming etc. advantage.
Description of drawings
Fig. 1 is the layout drawing of the present invention in preparation facilities;
Fig. 2 is that volume content is field emission scan (FEG-SEM) photo of 10% CNT (carbon nano-tube) reinforced aluminum matrix composites fracture.
Embodiment
Embodiment 1
With volume content CNTs=10%; Mg=20%; the powder of Al=70% is ball milling blend under the argon shield in stainless cylinder of steel; become the good powder molding of ball milling prefabricated component to put in the Stainless Steel Crucible; aluminium alloy is placed enhancing powder top; they are together inserted in the tube furnace again and be heated to 800 ℃ under nitrogen atmosphere, and be incubated five hours and treat the cold back of stove and take out, promptly making volume content is 10% CNT (carbon nano-tube) reinforced aluminum matrix composites.Figure 2 shows that field emission scan (FEG-SEM) photo of the CNT (carbon nano-tube) reinforced aluminum matrix composites fracture after the infiltration.
With volume content CNTs=5%; Mg=21.1%; the powder of Al=73.9% is ball milling blend under the argon shield in stainless cylinder of steel; become the good powder molding of ball milling prefabricated component to put in the Stainless Steel Crucible; aluminium alloy is placed enhancing powder top; then they are together inserted in the tube furnace and be heated to 800 ℃ under nitrogen atmosphere, and be incubated five hours and treat the cold back of stove and take out, promptly making volume content is 5% CNT (carbon nano-tube) reinforced aluminum matrix composites.
Embodiment 3
With volume content CNTs=20%, Mg=17.8%, the powder of Al=62.2% be ball milling blend under the argon shield in stainless cylinder of steel, becomes the good powder molding of ball milling prefabricated component to put in the Stainless Steel Crucible.Aluminium alloy placed strengthen the powder top, they are together inserted in the tube furnace be heated to 800 ℃ again under nitrogen atmosphere, and be incubated five hours and treat the cold back of stove and take out, promptly making volume content is 20% CNT (carbon nano-tube) reinforced aluminum matrix composites.
Claims (2)
1. pressureless penetration prepares the method for CNT (carbon nano-tube) reinforced aluminum matrix composites, it is characterized in that may further comprise the steps:
1) powder with CNT (carbon nano-tube), magnesium powder, aluminium powder adopts mechanical system to mix or ball milling blend under the argon shield in stainless cylinder of steel, and wherein the volume content of CNT (carbon nano-tube) is 5%-20%, the magnesium powder: the volume ratio of aluminium powder is 1-5: 5-20;
2) become prefabricated component to put in the Stainless Steel Crucible blended powder molding;
3) fine aluminium or aluminium alloy are placed the top of prefabricated component, together insert them in the tube furnace then, be heated to 750 ℃ of-1000 ℃ of temperature under nitrogen atmosphere, according to the size of prefabricated component volume insulation 1-8 hour, cooling was taken out and is promptly got the CNT (carbon nano-tube) reinforced aluminum matrix composites.
2. pressureless penetration according to claim 1 prepares the method for CNT (carbon nano-tube) reinforced aluminum matrix composites, it is characterized in that said CNT (carbon nano-tube) is multiple-wall carbon nanotube or Single Walled Carbon Nanotube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310109132 CN1242080C (en) | 2003-12-05 | 2003-12-05 | Zero pressure and permeation for preparation of carbon nanometer tube reinforced aluminum base composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310109132 CN1242080C (en) | 2003-12-05 | 2003-12-05 | Zero pressure and permeation for preparation of carbon nanometer tube reinforced aluminum base composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1546695A CN1546695A (en) | 2004-11-17 |
| CN1242080C true CN1242080C (en) | 2006-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200310109132 Expired - Fee Related CN1242080C (en) | 2003-12-05 | 2003-12-05 | Zero pressure and permeation for preparation of carbon nanometer tube reinforced aluminum base composite material |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100406596C (en) * | 2005-08-29 | 2008-07-30 | 天津大学 | Vapour deposition in situ reaction method for preparing carbon nanotube reinforced aluminium matrix composite material |
| CN102206793B (en) * | 2011-05-24 | 2012-09-05 | 河北工业大学 | Preparation method of carbon nanotube-alumina composite reinforced magnesium-based composite material |
| CN104073674B (en) * | 2014-06-20 | 2016-03-30 | 哈尔滨翔科新材料有限公司 | A kind of preparation method of Graphene aluminum matrix composite |
| CN105088023B (en) * | 2015-09-08 | 2017-03-22 | 苏州有色金属研究院有限公司 | Preparation method of carbon nano tube reinforced aluminum matrix composite |
| JP6984926B1 (en) * | 2021-04-19 | 2021-12-22 | アドバンスコンポジット株式会社 | Method for manufacturing metal-based composite material and method for manufacturing preform |
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- 2003-12-05 CN CN 200310109132 patent/CN1242080C/en not_active Expired - Fee Related
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