CN105154711A - Carbon nano tube reinforcement aluminum-bronze-based composite material and preparation method thereof - Google Patents
Carbon nano tube reinforcement aluminum-bronze-based composite material and preparation method thereof Download PDFInfo
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- CN105154711A CN105154711A CN201510546196.9A CN201510546196A CN105154711A CN 105154711 A CN105154711 A CN 105154711A CN 201510546196 A CN201510546196 A CN 201510546196A CN 105154711 A CN105154711 A CN 105154711A
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Abstract
The invention provides a carbon nano tube reinforcement aluminum-bronze-based composite material and a preparation method thereof. The composite material comprises the following components of carbon nano tubes, aluminum powder, zinc powder, tungsten carbide powder, titanium powder, sulphur molybdenum powder, and the balance copper powder. The preparation method comprises the steps that (1) the raw materials are mixed evenly, ground and thrown into a mixing mill to be subjected to dry blending for 1-2 hours; (2) the raw materials are pressed and formed under the pressure of 800-900 MPa; (3) under the nitrogen protection atmosphere, the mixture is thrown into a melting furnace to be heated; (4) then sampling and analyzing are conducted, the components are adjusted, alloy melt liquid is poured into a cast iron mould and cooled to be at the room temperature after the components accord with the formula ratio, heat preservation is conducted in a thermal treatment furnace, solid fusion processing is conducted, and then the composite material is obtained. By adding the carbon nano tubes into the prepared aluminum-bronze-based composite material, the mechanical performance is improved remarkably while the density and hardness of the original alloy material are maintained basically.
Description
Technical field
The invention belongs to metallurgical field of compound material, be specifically related to a kind of carbon nanotube and strengthen xantal based composites and preparation method thereof.
Background technology
In modern mechanical equipment, all rotational parts all need to support with bearing, bearing shell or axle sleeve, because the velocity of rotation of modern machines and mechanism and load are sharply increased, and due to the development of aerospace, nuclear energy and low temperature technique, in existing bearing materials, according to work-ing life and the possibility that works under different conditions, the application of mmaterial all holds pride of place.Cu-Al system alloy has high strength, the characteristic such as anti-corrosion, wear-resisting, have pollution-free, there is self-lubricating, non-maintaining typical feature simultaneously, become one of important directions of sliding surface bearing development.
The Cu-Al system alloy of prior art usually can add non-metallic material to regulate the friction and wear behavior of material, but adding of non-metallic material often can cause the problem that Cu-Al system alloy hardness reduces, physical strength weakens.
Summary of the invention
goal of the invention:the object of the present invention is to provide a kind of carbon nanotube to strengthen xantal based composites and preparation method thereof, obtained matrix material, while the higher hardness of maintenance and physical strength, also has good wear resistance.
technical scheme of the present invention:
Carbon nanotube strengthens xantal based composites, and the component containing following mass percentage: carbon nanotube 3 ~ 7%, aluminium powder 5 ~ 10%, zinc powder 1 ~ 5%, tungsten carbide powder 3 ~ 6%, titanium valve 1 ~ 3%, sulfuration molybdenum powder 1 ~ 5%, surplus is copper powder.
Preferably, the component containing following mass percentage: carbon nanotube 5%, aluminium powder 7%, zinc powder 3%, tungsten carbide powder 4%, titanium valve 2%, sulfuration molybdenum powder 2%, surplus is copper powder.
The caliber of described carbon nanotube is 20 ~ 30nm, and length is 0.5 ~ 2 μm.
Carbon nanotube strengthens the preparation method of xantal based composites, comprises the steps:
(1) by after carbon nanotube, aluminium powder, zinc powder, tungsten carbide powder, titanium valve, sulfuration molybdenum powder, copper powder mixing, put into ball mill and carry out ground and mixed, evenly to be mixed, drop in mixing roll, be then dry mixed 1 ~ 2h;
(2) type is made at the pressure of 800 ~ 900MPa;
(3) under nitrogen protection atmosphere, mixture is put in smelting furnace, be heated to 1000 ~ 1200 DEG C, by thawing material stirring, drag for slag, sampling analysis adjusting component, after composition meets formula rate, proceeded to holding furnace inside holding, holding temperature is 900 ~ 1100 DEG C, is incubated 30 ~ 40 minutes;
(4) resampling analysis, adjustment composition, after composition meets formula rate, pours into alloy molten solution in pig mold, is cooled to room temperature; Finally at 900 ± 10 DEG C, 5 ~ 6 hours are incubated to casting gained alloy in heat treatment furnace, carry out solution treated and obtain carbon nanotube enhancing xantal based composites.
Step (3) temperature rise rate is 50 ~ 60 DEG C/min.
Step (4) rate of temperature fall is 5 DEG C/min.
beneficial effect:
The xantal based composites that the present invention prepares is by adding carbon nanotube, and while the density and hardness of the former alloy material of basic maintenance, mechanical property is significantly improved.
Embodiment
Below the specific embodiment of the present invention is described in detail.
embodiment 1
Carbon nanotube strengthens xantal based composites, and it is characterized in that, the component containing following mass percentage: carbon nanotube 3%, aluminium powder 5%, zinc powder 1%, tungsten carbide powder 3%, titanium valve 1%, sulfuration molybdenum powder 1%, surplus is copper powder.
Preparation method, comprises the steps:
(1) by after carbon nanotube, aluminium powder, zinc powder, tungsten carbide powder, titanium valve, sulfuration molybdenum powder, copper powder mixing, put into ball mill and carry out ground and mixed, evenly to be mixed, drop in mixing roll, be then dry mixed 1h;
(2) type is made at the pressure of 800MPa;
(3) under nitrogen protection atmosphere, put into by mixture in smelting furnace, be heated to 1000 DEG C, temperature rise rate is 50 DEG C/min.By thawing material stirring, drag for slag, sampling analysis adjusting component, proceeded to holding furnace inside holding, holding temperature is 900 DEG C, is incubated 30 minutes;
(4) resampling analysis, adjustment composition, poured into by alloy molten solution in pig mold, be cooled to room temperature, rate of temperature fall is 5 DEG C/min.Finally at 900 ± 10 DEG C, 5 hours are incubated to casting gained alloy in heat treatment furnace, carry out solution treated and obtain carbon nanotube enhancing xantal based composites.
embodiment 2
Carbon nanotube strengthens xantal based composites, and it is characterized in that, the component containing following mass percentage: carbon nanotube 5%, aluminium powder 7%, zinc powder 3%, tungsten carbide powder 4%, titanium valve 2%, sulfuration molybdenum powder 2%, surplus is copper powder.
Preparation method, comprises the steps:
(1) by after carbon nanotube, aluminium powder, zinc powder, tungsten carbide powder, titanium valve, sulfuration molybdenum powder, copper powder mixing, put into ball mill and carry out ground and mixed, evenly to be mixed, drop in mixing roll, be then dry mixed 1.5h;
(2) type is made at the pressure of 850MPa;
(3) under nitrogen protection atmosphere, put into by mixture in smelting furnace, be heated to 1100 DEG C, temperature rise rate is 55 DEG C/min.By thawing material stirring, drag for slag, sampling analysis adjusting component, proceeded to holding furnace inside holding, holding temperature is 1000 DEG C, is incubated 35 minutes;
(4) resampling analysis, adjustment composition, poured into by alloy molten solution in pig mold, be cooled to room temperature, rate of temperature fall is 5 DEG C/min.Finally at 900 ± 10 DEG C, 5.5 hours are incubated to casting gained alloy in heat treatment furnace, carry out solution treated and obtain carbon nanotube enhancing xantal based composites.
embodiment 3
Carbon nanotube strengthens xantal based composites, and it is characterized in that, the component containing following mass percentage: carbon nanotube 7%, aluminium powder 10%, zinc powder 5%, tungsten carbide powder 6%, titanium valve 3%, sulfuration molybdenum powder 5%, surplus is copper powder.
Preparation method, comprises the steps:
(1) by after carbon nanotube, aluminium powder, zinc powder, tungsten carbide powder, titanium valve, sulfuration molybdenum powder, copper powder mixing, put into ball mill and carry out ground and mixed, evenly to be mixed, drop in mixing roll, be then dry mixed 2h;
(2) type is made at the pressure of 900MPa;
(3) under nitrogen protection atmosphere, put into by mixture in smelting furnace, be heated to 1200 DEG C, temperature rise rate is 60 DEG C/min.By thawing material stirring, drag for slag, sampling analysis adjusting component, proceeded to holding furnace inside holding, holding temperature is 1100 DEG C, is incubated 40 minutes;
(4) resampling analysis, adjustment composition, poured into by alloy molten solution in pig mold, be cooled to room temperature, rate of temperature fall is 5 DEG C/min.Finally at 900 ± 10 DEG C, 6 hours are incubated to casting gained alloy in heat treatment furnace, carry out solution treated and obtain carbon nanotube enhancing xantal based composites.
comparative example 1
Be with the difference of embodiment 3: in matrix material, do not add carbon nanotube.
performance test
The matrix material that embodiment 1 ~ 3 and comparative example 1 obtain is carried out the test of density, hardness, tensile strength, yield strength, Young's modulus, the results are shown in Table 1.
Table 1
。
As can be seen from Table 1, compared with comparative example 1, the density and hardness of embodiment 1 ~ 3 has and slightly declines, but difference is little, tensile strength, yield strength, Young's modulus then significantly improve, as can be seen here, owing to adding carbon nanotube, matrix material of the present invention is while the density and hardness of the former alloy material of basic maintenance, and mechanical property is significantly improved.
Although embodiment of the present invention are open as above, but it is not restricted to listed in specification sheets and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details.
Claims (6)
1. carbon nanotube strengthens xantal based composites, and it is characterized in that, the component containing following mass percentage: carbon nanotube 3 ~ 7%, aluminium powder 5 ~ 10%, zinc powder 1 ~ 5%, tungsten carbide powder 3 ~ 6%, titanium valve 1 ~ 3%, sulfuration molybdenum powder 1 ~ 5%, surplus is copper powder.
2. carbon nanotube according to claim 1 strengthens xantal based composites, and it is characterized in that, the component containing following mass percentage: carbon nanotube 5%, aluminium powder 7%, zinc powder 3%, tungsten carbide powder 4%, titanium valve 2%, sulfuration molybdenum powder 2%, surplus is copper powder.
3. carbon nanotube according to claim 1 strengthens xantal based composites, and it is characterized in that, the caliber of described carbon nanotube is 20 ~ 30nm, and length is 0.5 ~ 2 μm.
4. carbon nanotube according to claim 1 strengthens the preparation method of xantal based composites, it is characterized in that, comprises the steps:
(1) by after carbon nanotube, aluminium powder, zinc powder, tungsten carbide powder, titanium valve, sulfuration molybdenum powder, copper powder mixing, put into ball mill and carry out ground and mixed, evenly to be mixed, drop in mixing roll, be then dry mixed 1 ~ 2h;
(2) type is made at the pressure of 800 ~ 900MPa;
(3) under nitrogen protection atmosphere, put into by mixture in smelting furnace, be heated to 1000 ~ 1200 DEG C, by thawing material stirring, drag for slag, sampling analysis adjusting component, proceeded to holding furnace inside holding, holding temperature is 900 ~ 1100 DEG C, is incubated 30 ~ 40 minutes;
(4) resampling analysis, adjustment composition, pours into alloy molten solution in pig mold, is cooled to room temperature; Finally at 900 ± 10 DEG C, 5 ~ 6 hours are incubated to casting gained alloy in heat treatment furnace, carry out solution treated and obtain carbon nanotube enhancing xantal based composites.
5. the preparation method of carbon fiber reinforced aluminum matrix composite according to claim 4, is characterized in that, step (3) temperature rise rate is 50 ~ 60 DEG C/min.
6. the preparation method of carbon fiber reinforced aluminum matrix composite according to claim 4, is characterized in that, step (4) rate of temperature fall is 5 DEG C/min.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108754205A (en) * | 2018-06-19 | 2018-11-06 | 上海大学 | Homologous droplet is mixed into the preparation method of carbon nano-tube reinforced metal-matrix composite material |
| CN109868429A (en) * | 2019-03-07 | 2019-06-11 | 王红梅 | One kind effectively reducing Al4C3Low-density graphite fibre-aluminum matrix composite of phase |
| CN112375998A (en) * | 2020-11-10 | 2021-02-19 | 西安工程大学 | Preparation method of copper-based carbon fiber bearing bush |
| CN112961999A (en) * | 2021-02-03 | 2021-06-15 | 安徽绿能技术研究院有限公司 | High-strength high-conductivity copper-based material and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108754205A (en) * | 2018-06-19 | 2018-11-06 | 上海大学 | Homologous droplet is mixed into the preparation method of carbon nano-tube reinforced metal-matrix composite material |
| CN108754205B (en) * | 2018-06-19 | 2021-01-12 | 上海大学 | Preparation method of homologous microdroplet mixed carbon nanotube reinforced metal matrix composite material |
| CN109868429A (en) * | 2019-03-07 | 2019-06-11 | 王红梅 | One kind effectively reducing Al4C3Low-density graphite fibre-aluminum matrix composite of phase |
| CN112375998A (en) * | 2020-11-10 | 2021-02-19 | 西安工程大学 | Preparation method of copper-based carbon fiber bearing bush |
| CN112375998B (en) * | 2020-11-10 | 2022-03-04 | 西安工程大学 | Preparation method of copper-based carbon fiber bearing bush |
| CN112961999A (en) * | 2021-02-03 | 2021-06-15 | 安徽绿能技术研究院有限公司 | High-strength high-conductivity copper-based material and preparation method thereof |
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Application publication date: 20151216 |