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Nanocarbon/aluminum composite material, process for producing the same, and plating liquid for use in said process

An aluminum composite material and production method technology, applied in the direction of electrolytic coatings, coatings, etc., can solve the problems of flash burning danger, difficult industrial practical application, unrealistic electrodeposition, etc., and achieve the effect of easy operation

Inactive Publication Date: 2008-09-03
NISSAN MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the fact that Al has a negative standard electrode potential of −1.68 V vs. SHE (Standard Hydrogen Electrode), electrodeposition from aqueous systems is impractical under the influence of competing hydrogen generation reactions.
Although it can be electrodeposited from organic solvent systems, it is difficult to put it into industrial practical application due to the danger of flashing

Method used

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  • Nanocarbon/aluminum composite material, process for producing the same, and plating liquid for use in said process
  • Nanocarbon/aluminum composite material, process for producing the same, and plating liquid for use in said process
  • Nanocarbon/aluminum composite material, process for producing the same, and plating liquid for use in said process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] First, weigh AlCl at a molar ratio of 66.7:33.3 3 and EMIC, and mix together by stirring. The resulting mixture was completely melted, and refined by substituting Al wire in the mixture for a week or more.

[0099] Plating solutions for MWCNT / aluminum composite production were prepared by adding 0.1-30.0 g / L multi-walled carbon nanotubes (MWCNTs with 1.2-2.0 nm tube diameter and 2-5 μm tube length) to the above mixture.

[0100] The NWCNT / aluminum composite was then prepared by electrolyzing the plating solution at a constant current with sufficient stirring.

[0101] Here, preparation of the plating solution and electrolysis were performed under a dry nitrogen atmosphere. In constant current electrolysis, a two-electrode cell with a Cu plate (99.96%) cathode and an Al plate (99.99%) anode was employed. The cathode was pretreated by grinding with sandpaper (No. 2000), electrolytic degreasing with 10% aqueous sodium orthosilicate solution, and then acid treatment with...

Embodiment 2

[0109] Predetermined amounts of EMICs and MWCNTs (with 1.2–2.0 nm tube diameter and 2–5 μm tube length) were mixed together, followed by adding AlCl 3 And melt the resulting mixture to obtain a coating solution for MWCNT / aluminum composite production. AlCl in the plating solution 3 The molar ratio to EMIC was set at 66.7:33.3. The addition amount of MWCNT is set at 0.1-30.0g / L.

[0110] Then, as in the case of Example 1, the plating solution was electrolyzed by a constant current under sufficient stirring to produce a NWCNT / aluminum composite material.

[0111] Here, the preparation of the plating solution and electrolysis were performed in a dry nitrogen atmosphere. Further, the two-electrode electrolyzer, cathode pretreatment method and electrolysis conditions are all the same as in Example 1.

[0112] The surface state of NWCNT / aluminum composites was observed by means of SEM. It was found by observation that, as in the case of Example 1, the NWCNT and Al formed a eute...

Embodiment 3

[0119] Predetermined amounts of EMIC and MWCNT (with 1.2-2.0 nm tube diameter and 2-5 μm tube length) were mixed together and added into AlCl 3 - EMIC molten salts to obtain plating solutions for MWCNT / aluminum composite production. AlCl in the plating solution 3 The molar ratio to EMIC was set at 66.7:33.3. The addition amount of MWCNT is set at 0.1-30.0g / L.

[0120] Then, as in the case of Example 1, the plating solution was electrolyzed by a constant current under sufficient stirring to produce a NWCNT / aluminum composite material.

[0121] The preparation of the plating solution and the electrolysis described here were carried out in a dry nitrogen atmosphere. Further, the two-electrode electrolyzer, cathode pretreatment method and electrolysis conditions are all the same as in Example 1.

[0122] The surface state of NWCNT / aluminum composites was observed by means of SEM. It was found by observation that, as in the case of Example 1, the NWCNT and Al formed a eutectic...

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Abstract

The present invention provides a nanocarbon / aluminum composite material having both high strength and electrical conductivity, which is suitable for use in lead wires, heat exchangers, and automobile components, and a process for producing the same. A plating liquid for nanocarbon / aluminum composite material formation, comprising an aluminum halide, nanocarbon, a 1,3-dialkylimidazolium halide and the like, wherein the molar ratio of the aluminum halide to the 1,3-dialkylimidazolium halide and the like is 20:80 to 80:20. The 1,3-dialkylimidazolium halide and the like contain an alkyl group having 1 to 12 carbon atoms. In the production process of a nanocarbon / aluminum composite material, the surface of a base material is plated in a dry oxygen-free atmosphere using the plating liquid for nanocarbon / aluminum composite material formation, for example, by direct current under electrolysis conditions of bath temperature 0 to 300 C and current density 0.01 to 50 A / dm<2>. There is also provided a nanocarbon / aluminum composite material produced by the production process.

Description

technical field [0001] The present invention relates to the following: nano carbon / aluminum composite material, which is especially suitable for electrical conductors such as power cables and leads, heat exchangers such as radiators, condensers and evaporators, and automotive parts; for the production of the nano carbon / aluminum A composite material method and a plating solution used in the nano-carbon / aluminum composite material production method. Background technique [0002] Generally, power cables and lead materials such as aluminum alloys and heat exchanger materials are required to have high electrical conductivity and high thermal conductivity. [0003] Based on recent global environmental protection viewpoints, there is an increasing demand for weight and size miniaturization of power cables, lead wires, heat exchangers, and automotive parts. Materials for power cables, lead wires, heat exchangers, and automotive parts are thus expected to have high strength while b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D15/02C25D3/66
CPCC25D3/665C25D15/02C25D5/18
Inventor 江平淳村上亮小浦延幸宇井幸一八代高士
Owner NISSAN MOTOR CO LTD