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Sprayed copper-aluminium composite material and method for producing same

A kind of technology of aluminum composite material, manufacturing method

Inactive Publication Date: 2001-11-07
TAIHO INDUSTRIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The spraying technology disclosed in this publication is said to prevent part of the structure of the Cu-Pb alloy, especially the Pb structure, from melting, so that the Pb phase in it will not become coarse, thereby improving its sliding properties. It is difficult to harden the alloy and thereby increase its wear resistance
That is to say, the hardening of copper alloys is generally achieved by rolling, drawing, etc., and utilizing precipitation hardening. However, since the composition of the sprayed alloy is basically the composition of the cast alloy, it must be passed It is difficult to adjust the composition to harden
[0015] In the past, it was known that metal-ceramic composite materials could be manufactured by spraying technology, but metal-metal composite materials such as Cu-Pb alloy and Al-Si alloy composite materials could not be manufactured.

Method used

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  • Sprayed copper-aluminium composite material and method for producing same
  • Sprayed copper-aluminium composite material and method for producing same
  • Sprayed copper-aluminium composite material and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] A commercially available rolled pure aluminum plate is sandblasted with steel grit (grain size 0.7mm) so that its surface reaches a roughness of Rz45 μm, and it is used as the base material. In addition, 60% by weight of Cu-10% by weight and Pb-10 wt% Sn alloy mist powder (average particle diameter 30 μm) and 40 wt% aluminum alloy mist powder (it is a kind of alloy mist powder formed by adding 40 wt% Si in A2024 aluminum alloy, The average particle size is 100 μm) mixed, and the obtained mixture is spray-coated on the above-mentioned roughened substrate, so that the thickness of the coating reaches 250 μm. At the time of thermal spraying, thermal spraying was carried out under the following conditions using a HVOF type thermal spraying machine (product of DJ. manufactured by Sulzer Meteco).

[0104] Oxygen pressure: 1.03MPa, 150psi

[0105] Fuel pressure: 0.69MPa, 100psi

[0106] Spray distance: 180mm

[0107] Coating layer thickness: 250μm

[0108] The hardness of ...

Embodiment 2

[0113] Sputtering was carried out in the same manner as in Example 1, except that the copper alloy mist powder containing Cu-24% by weight and Pb-4% by weight was used instead of the copper alloy mist powder. The same abrasion resistance test as in Example 1 was carried out, and the results are shown in Table 3. The hardness of the sprayed layer is Hv 220-280. The weight percent of its total composition is: 36% Cu, 32% Al, 7% Pb, 23% Si and 2% Sn.

Embodiment 3

[0115] 75% by weight containing Cu-10% by weight and Pb-4% by weight of Sn alloy mist powder (average particle size 60 μ m) and 25% by weight of aluminum alloy mist powder (it is a kind of A2024 aluminum alloy with 40 The alloy atomized powder that forms by weight % Si, and its average particle diameter is 100um) mixes, and the obtained mixture is spray-coated on a commercially available pure aluminum plate according to the same condition as Example 1. The surface structure of the sprayed layer was observed under a microscope without etching, and the obtained microscopic photos are shown in figure 1 middle. In addition, use Grad etching solution (ferric chloride 5g, hydrochloric acid 100cc, water 100cc) to etch sprayed layer surface for 5 seconds, observe with microscope then, the surface structure photograph obtained is shown in figure 2 middle. In addition, the cross-section of the sprayed layer was observed under a microscope without etching, and the photograph of the ob...

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Abstract

There is provided a composite material, which exhibits the properties of copper alloy and aluminum alloy, and which has improved wear-resistance and seizure-resistance. By frame-spraying is prepared a copper-aluminum composite material, which consists of copper or first copper-alloy (for example Cu - Pb alloy) including at least unmelted phase and aluminum or first aluminum-alloy (for example Al - Si alloy) including at least melted phase.

Description

technical field [0001] The present invention relates to a sprayed copper-aluminum composite material and a method for its manufacture. The technical fields involved in the invention include composite materials, spray plating technology, aluminum alloy sliding materials, copper alloy sliding materials and the like. Background technique [0002] As metal composite materials, people mainly study the composite materials formed by metal and ceramics. The manufacturing methods of such materials include: copper powder and Al 2 o 3 A method of press-forming mixed powder such as powder and then sintering it (Japanese Patent No. 2854916); a method of impregnating ceramic carbon with an aluminum alloy melt (Japanese Patent No. 2846635), etc. [0003] As a sliding layer with a metal-metal composite structure, for example, a metal cladding material can be used. [0004] Regarding the spraying technology, in the Journal of the Japanese Society for Metals (Materia Japan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/04C23C4/08
CPCF16C33/12C23C4/04C23C4/08F16C2204/20Y10T428/12903Y10T428/12736Y10T428/12063
Inventor 富川贵志山田丰和
Owner TAIHO INDUSTRIES CO LTD