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Thermally conductive and anti-corrosion composite film layer based on copper surface and preparation method

A composite film, anti-corrosion technology, applied in coating, superimposed layer plating, metal material coating process and other directions, can solve the problem of high preparation cost, harsh growth conditions of diamond film, unsuitable for thermal conductivity and anti-corrosion film and other problems, to achieve the effect of high thermal conductivity, less defects and good corrosion resistance

Active Publication Date: 2022-04-01
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the growth conditions of the diamond film are harsh and the preparation cost is high, so it is not suitable for use as a heat-conducting and anti-corrosion film for ordinary heat exchanger copper tubes

Method used

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  • Thermally conductive and anti-corrosion composite film layer based on copper surface and preparation method
  • Thermally conductive and anti-corrosion composite film layer based on copper surface and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The transition metal is the chromium layer.

[0038] A 25×20mm, 3mm-thick copper tube plate material sample and a Φ8 copper tube with a length of 10cm were selected, and a high-purity metal chromium target was selected as the sputtering target.

[0039] The specific operation steps are:

[0040] (1) Pretreatment of plate material samples and copper tubes: the processed block samples and copper tubes are polished with 400~1500# sandpaper in turn, and finally mechanically polished; mechanical polishing is done with a cloth wheel of 18~25m / s , using chromium oxide particle polishing paste; put the polished block sample and copper tube into industrial alcohol liquid for ultrasonic cleaning for 5 minutes, take it out and dry it with cold air at room temperature, and set it aside.

[0041] (2) Fix the pretreated block sample and copper tube on the substrate frame in the vacuum chamber of the magnetron sputtering device. The distance between the sample and the metal chromium ...

Embodiment 2

[0051] The transition metal is the titanium layer.

[0052] A 25×20mm, 3mm-thick copper tube plate material sample and a Φ8 copper tube with a length of 10cm were selected, and the sputtering target was made of high-purity titanium metal.

[0053] The specific operation steps are:

[0054] (1) Pretreatment of plate material samples and copper tubes: the processed block samples and copper tubes are polished with 400-1500# sandpaper in turn, and finally mechanically polished. Put the polished block sample and copper tube into industrial alcohol liquid and ultrasonically clean it for 5 minutes, take it out and dry it with cold air at room temperature, and set it aside.

[0055] (2) Fix the pretreated block sample and copper tube on the substrate frame in the vacuum chamber of the magnetron sputtering device. The distance between the sample and the metal titanium target is 70mm, and the copper tube on the substrate frame can rotate . Then close the vacuum chamber, and use a mec...

Embodiment 3

[0061] Reduce transition metal chromium layer thickness.

[0062] A 25×20mm, 3mm-thick copper tube plate material sample and a Φ8 copper tube with a length of 10cm were selected, and a high-purity metal chromium target was selected as the sputtering target.

[0063] The specific operation steps are:

[0064] (1) Pretreatment of plate material samples and copper tubes: the processed block samples and copper tubes are polished with 400~1500# sandpaper in turn, and finally mechanically polished. Put the polished block sample and copper tube into industrial alcohol liquid and ultrasonically clean it for 5 minutes, take it out and dry it with cold air at room temperature, and set it aside.

[0065] (2) Fix the pretreated block sample and copper tube on the substrate frame in the vacuum chamber of the magnetron sputtering device. The distance between the sample and the metal chromium target is 70 mm, and the copper tube on the substrate frame can rotate . Then close the vacuum ch...

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Abstract

The invention belongs to the technical field of surface modification, in particular to a thermally conductive and anti-corrosion composite film layer based on a copper surface and a preparation method thereof. The composite film layer includes a titanium or chromium metal layer; a diamond-like layer is laminated on the surface of the titanium or chromium metal layer. The preparation method of the composite film is to use a high-purity chromium target or a titanium target to perform magnetron sputtering on the surface of copper or copper products to deposit a titanium or chromium metal layer; in-situ vacuum aging treatment; The chemical vapor deposition method deposits the diamond-like carbon layer. The prior art lacks a coating technology that can prevent corrosion and maintain good thermal conductivity of copper in the coating technology on the copper surface. The invention proposes a new technology of using a composite film composed of a heat-conducting metal film and a diamond-like film for heat conduction and anti-corrosion film on the surface of a radiator copper pipe or copper product. The composite film has good bonding force and excellent thermal conductivity specialty.

Description

technical field [0001] The invention belongs to the technical field of surface modification, in particular to a thermally conductive and anti-corrosion composite film layer based on a copper surface and a preparation method thereof. Background technique [0002] The market scale of mariculture seafood in coastal areas is huge, but in recent years, frequent illnesses and even deaths of seafood have caused huge losses to farmers, seriously affecting the development of mariculture industry and social and economic benefits. The aquaculture site relies on 24-hour circulating seawater to control the temperature of the aquaculture seawater, which wastes water resources, electricity, etc. and fails to receive the expected results and benefits. In particular, the temperature control of circulating seawater is affected by the external ambient temperature, and it is impossible to maintain an appropriate temperature throughout the year. For many years, the aquaculture industry has stil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/00C23C14/16C23C14/35C23C16/26C23C16/50
CPCC23C28/322C23C28/343C23C14/352C23C14/165C23C16/26C23C16/50
Inventor 宋贵宏胡方王丽梅
Owner SHENYANG POLYTECHNIC UNIV