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Diffusion-strengthened copper prepared by nano particle stirring method and preparation method thereof

A technology for dispersion strengthening of copper and nanoparticles, which is used in high-strength, high-wear and high-corrosion-resistant metal materials, and high electrical conductivity. It can achieve the effect of improved mechanical properties, low cost and uniform distribution

Active Publication Date: 2015-04-22
东营市东凯新材料技术研发有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Among the existing materials and preparation technologies, the main problems are: the internal oxidation method is complex, costly and dangerous, and other methods cannot produce high-strength and high-conductivity copper alloy materials in large scale

Method used

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  • Diffusion-strengthened copper prepared by nano particle stirring method and preparation method thereof
  • Diffusion-strengthened copper prepared by nano particle stirring method and preparation method thereof
  • Diffusion-strengthened copper prepared by nano particle stirring method and preparation method thereof

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Embodiment 1

[0016] In the embodiment of the present invention, the process flow for preparing dispersion-strengthened copper by nanoparticle stirring method is as follows: modify the surface of nano-alumina, disperse it in ethanol for 40 minutes with silane coupling agent KH570, put it into a planetary ball mill and grind for 3 hours, and complete surface modification. Pack the surface-modified nano-alumina in a copper tube, the content is 0.15wt% of the total weight of the melt, and prepare according to the above ingredients, first add the copper plate to the smelting to 1180-1200 °C, and cover the surface with a layer of charcoal with a thickness of more than 2mm powder, and then add the packaged nano-Al in the melting furnace in the way of dispersed feeding 2 o 3 After stirring, let it stand for 30 minutes, pour it into a horizontal continuous casting holding furnace, and cast it into a slab at a temperature of 1150 ° C. The conductivity of the slab is 91% IACS, the oxygen content is ...

Embodiment 2

[0018] In the embodiment of the present invention, the process flow for preparing dispersion-strengthened copper by nanoparticle stirring method is as follows: modify the surface of nano-alumina, disperse it in ethanol for 30 minutes with silane coupling agent KH570, put it into a planetary ball mill and grind it for 3.5 hours, and complete surface modification. The surface-modified nano-alumina is packaged in a copper tube. The content is 0.35wt% of the total weight of the melt. It is prepared according to the above ingredients. First, the copper plate is added to the melting temperature to 1180-1200 °C, and the surface layer is covered with a layer of charcoal powder with a thickness of more than 2mm. good nano Al 2 o 3 After stirring, let it stand for 30 minutes, pour it into a vertical holding furnace, and cast it into a slab at a temperature of 1150 ° C. The conductivity of the slab is 88% IACS, and the oxygen content is 290ppm. After rolling and deformation, a slab of...

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Abstract

Diffusion-strengthened copper prepared by a nano particle stirring method is provided; a nano component is Al2O3, after surface modification, the Al2O3 is directly added into a copper matrix under a stirring action and can be uniformly distributed. A preparation method comprises the steps: modifying the surface of nano Al2O3, and then packaging the nano Al2O3 in a copper tube; preparing according to the components, firstly, adding a copper plate into smelting to 1180-1200 DEG C, covering the surface with a layer of charcoal powder with the thickness of more than 2 mm, then adding the packaged nano Al2O3 in a smelting furnace in a dispersion feeding mode, after stirring, allowing to standing for 30 minutes, pouring into a horizontal continuous casting heat-preserving furnace, and at the temperature of 1150 DEG C, casting into a casting blank; carrying out cold-hot deformation, to obtain a finished tube rod profile having the characteristics of a high-strength and high-conductivity copper alloy material. The diffused strengthened copper is characterized in that the nano Al2O3 having the surface modified can be directly added to the copper melt, a technology of stirring coupling surface modification of the nano Al2O3 is adopted, nanoparticles are uniform in distribution, and the casting blank is stable in properties, has no inclusion and is low in cost and suitable for industrialized continuous production. The finished product has the characteristics of high strength and high conductivity.

Description

technical field [0001] The invention relates to a dispersion-strengthened copper prepared by a nanoparticle stirring method, which is mainly used for resistance welding electrode heads, electrode caps, welding wheels, electrode arms, cutting and gas-shielded welding conductive nozzles, vacuum switches, electrical connectors, contacts , electrician, electronics and communication automobile, household appliances and container manufacturing, mold, etc., is a metal material with high strength, high conductivity, high wear resistance and high corrosion resistance. After the surface modification of nanoparticles, it is directly added to the copper matrix, stirred to make it evenly distributed, and then prepared into a dispersion-strengthened copper product through cold processing and hot processing, which has the characteristics of high strength, high conductivity, and high corrosion resistance. Background technique [0002] Dispersion strengthened copper alloy, also known as alum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/02
Inventor 付亚波华英芳张平霍顔秋张梦贤
Owner 东营市东凯新材料技术研发有限责任公司
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