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Method for casting aluminum-base composite material by adding ceramic nanoparticles

A nanoparticle and composite material technology, applied in the field of metal matrix composite materials and its manufacturing, can solve the problems of poor wettability, poor dispersion, poor wettability of aluminum alloy melt, and methods that cannot achieve the desired effect, and achieve rounded grain boundaries , Improve the wettability and dispersibility, and improve the comprehensive mechanical properties

Inactive Publication Date: 2015-08-19
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, due to the easy aggregation of ceramic nanoparticles, poor dispersion and wettability with aluminum alloy melts, there is still no effective solution to the problem of its compounding with aluminum alloys, or the methods used cannot achieve the desired effect, which seriously affects the new type of ceramics with superior performance. The development and application of aluminum matrix composites. Therefore, how to solve the problem of poor wettability and dispersion of ceramic nanoparticles in aluminum alloy melts, and research and explore the production process of effectively preparing aluminum matrix nanocomposites have become the most concerned in this field. key issues

Method used

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  • Method for casting aluminum-base composite material by adding ceramic nanoparticles
  • Method for casting aluminum-base composite material by adding ceramic nanoparticles
  • Method for casting aluminum-base composite material by adding ceramic nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) SiO 2 Nanoparticles and Al powder by mass ratio SiO 2 : Al = 1:5 to weigh, then mix the ingredients, put them into a nylon tank and use a ball mill for 3 hours to make them fully mixed, take them out, and finally dry them under vacuum at 80°C to remove moisture and obtain a granular mixture .

[0019] (2) Clean the surface of a pure aluminum plate with a purity of 99.6%, with a width of 350mm and a thickness of 0.5mm, with dilute nitric acid with a concentration of 2mol / L to remove the surface oxide film and impurities, and finally rinse it thoroughly with distilled water, and place it in the Dry quickly under the condition of not exceeding 80°C to obtain a spare aluminum plate.

[0020] (3) Combine the granular mixture obtained in step (1) and the spare aluminum plate obtained in step (2) with a mass ratio of 1:8, and use a two-roll rolling mill to feed the material at a temperature of 450°C at a rate of 4-6m / min Rolling at a high speed, and repeated rolling for...

Embodiment 2

[0023] (1) SiO 2 Nanoparticles and Al powder by mass ratio SiO 2 : Al = 1:5 to weigh, then mix the materials, put them into a nylon tank and use a ball mill for 3 hours to make them fully mixed, take them out, and finally dry them in vacuum at 90°C to remove moisture and obtain a granular mixture .

[0024] (2) Clean the surface of a pure aluminum plate with a purity of 99.6%, with a width of 350mm and a thickness of 0.5mm, with dilute nitric acid with a concentration of 2mol / L to remove the surface oxide film and impurities, and finally rinse it thoroughly with distilled water, and place it in the Dry quickly under the condition of not exceeding 80°C to obtain a spare aluminum plate.

[0025] (3) Combine the granular mixture obtained in step (1) and the spare aluminum plate obtained in step (2) with a mass ratio of 1:8, and use a two-roll rolling mill to feed the material at a temperature of 450°C at a rate of 4-6m / min The rolling is carried out at a high speed, and the ro...

Embodiment 3

[0028] (1) SiO 2 Nanoparticles and Al powder by mass ratio SiO 2 : Al = 1:5 to weigh, then mix the materials, put them into a nylon tank and use a ball mill for 3 hours to make them fully mixed, take them out, and finally dry them under vacuum at 100°C to remove moisture and obtain a granular mixture .

[0029] (2) Clean the surface of a pure aluminum plate with a purity of 99.6%, with a width of 350mm and a thickness of 0.5mm, with dilute nitric acid with a concentration of 1mol / L to remove the surface oxide film and impurities, and finally rinse it thoroughly with distilled water, and place it in the Dry quickly under the condition of not exceeding 80°C to obtain a spare aluminum plate.

[0030] (3) Combine the granular mixture obtained in step (1) and the spare aluminum plate obtained in step (2) with a mass ratio of 1:8, and use a two-roll rolling mill to feed the material at a temperature of 450°C at a rate of 4-6m / min Rolling at a high speed, and rolling repeatedly, s...

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Abstract

The invention discloses a method for casting an aluminum-base composite material by adding ceramic nanoparticles. The method comprises the following steps: premixing SiO2 and Al in a mass ratio of 1:5 or TiO2 and Al in a mass ratio of 1:3, carrying out ball milling uniformly to obtain a mixture, rolling the mixture and a pretreated pure aluminum plate with the thickness of 0.5mm in a mass ratio of 1:8 or 1:12 by using a dual-roll mill, and finally, preparing the aluminum-base nano composite material by a stirring casting process. The aluminum-base nano composite material effectively improves the problems of wettability and dispersity between the ceramic nanoparticles and aluminum alloy melt. The aluminum-base nano composite material has excellent comprehensive mechanical properties: the yield strength, tensile strength and elongation percentage of the SiO2 / Al-7Si-0.3Mg are respectively enhanced by 18.8%, 19.1% and 90.7% as compared with the as-cast Al-7Si-0.3Mg alloy; and the yield strength, tensile strength and elongation percentage of the TiO2 / Al-7Si-0.3Mg are respectively enhanced by 15.3%, 17.4% and 58.1% as compared with the Al-7Si-0.3Mg alloy.

Description

technical field [0001] The invention belongs to the field of metal-based composite materials and their manufacture, and relates to a method for adding ceramic nano-particles to an aluminum alloy melt to cast an aluminum-based nano-composite material. Background technique [0002] Many research practices have shown that particle-reinforced aluminum matrix composites have better material properties than ordinary aluminum alloy materials, showing good designability of material properties, overcoming the limitation of single property adjustment of alloy materials, and effectively comprehensively improving material properties , At the same time, there is no problem of difficult preforming of continuous fiber reinforced composite materials and high subsequent processing costs, so it has attracted much attention. Most ceramic nanoparticles are easy to obtain, low in cost, good in high temperature stability, and can effectively promote the strength, hardness, wear resistance and fra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C32/00C22C21/02
Inventor 唐鑫黄世源喻亮罗鲲
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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