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Spraying preparation method for Cu/Mo/Cu composite thin plate

A composite thin plate and spraying device technology, which is applied in the direction of coating, metal material coating process, heating inorganic powder coating, etc., can solve the problems of complex rolling process, large one-time investment, poor controllability, etc., to achieve The effect of flexible and adjustable thickness, controllable quality and high work efficiency

Inactive Publication Date: 2015-03-11
KAIFENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The rolling composite method is complicated in process and large in one-time investment, so it is not suitable for small batch production
However, the controllability of technical processes such as explosive compounding is poor.

Method used

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  • Spraying preparation method for Cu/Mo/Cu composite thin plate
  • Spraying preparation method for Cu/Mo/Cu composite thin plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The spraying preparation method of Cu / Mo / Cu composite sheet of the present invention, the detailed steps of this preparation method are as follows:

[0039] a. Substrate pretreatment:

[0040] Using a molybdenum Mo sheet with a thickness of 0.3mm, a size of 0.3mm×100mm×100mm, and a purity of ≥98% as the substrate, the molybdenum sheet is first cleaned with lye with a mass concentration of 8% and a temperature of 70°C for 7 minutes to remove oil stains Then use dilute hydrochloric acid with a mass concentration of 6% to clean for 5 minutes to remove the thin oxide layer on the surface; rinse with water after cleaning with dilute hydrochloric acid; use absolute ethanol to perform ultrasonic cleaning after rinsing, and dry it for use after cleaning;

[0041] b. Selection of spraying powder:

[0042] Ni powder with a particle size of 0.08-0.8 μm and a purity of ≥99.5% is selected for the spray transition layer, and Cu powder with a particle size of 1.5-20 μm and a purity o...

Embodiment 2

[0052] The spraying preparation method of Cu / Mo / Cu composite sheet of the present invention, the detailed steps of this preparation method are as follows:

[0053] a. Substrate pretreatment:

[0054] Using a molybdenum Mo sheet with a thickness of 0.6mm, a size of 0.6mm×100mm×100mm, and a purity of ≥98% as the substrate, the molybdenum sheet is first cleaned with lye with a mass concentration of 10% and a temperature of 60°C for 5 minutes to remove oil stains ; then use mass concentration of 4% dilute hydrochloric acid to clean for 8 minutes to remove the surface oxide thin layer; rinse with water after dilute hydrochloric acid cleaning; use absolute ethanol to carry out ultrasonic cleaning after rinsing, dry after cleaning for use;

[0055] b. Selection of spraying powder:

[0056] Ni powder with a particle size of 0.08-0.8 μm and a purity of ≥99.5% is selected for the spray transition layer, and Cu powder with a particle size of 1.5-20 μm and a purity of ≥99.5% is selected ...

Embodiment 3

[0066] The spraying preparation method of Cu / Mo / Cu composite sheet of the present invention, the detailed steps of this preparation method are as follows:

[0067] a. Substrate pretreatment:

[0068] Using a molybdenum Mo sheet with a thickness of 0.8mm, a size of 0.8mm×100mm×100mm, and a purity of ≥98% as the substrate, first clean the molybdenum sheet with lye with a mass concentration of 5% and a temperature of 80°C for 10 minutes to remove oil stains Then use dilute hydrochloric acid with a mass concentration of 8% to clean for 3 minutes to remove the thin oxide layer on the surface; rinse with water after cleaning with dilute hydrochloric acid; use absolute ethanol to perform ultrasonic cleaning after rinsing, and dry it for use after cleaning;

[0069] b. Selection of spraying powder:

[0070] Ni powder with a particle size of 0.08-0.8 μm and a purity of ≥99.5% is selected for the spray transition layer, and Cu powder with a particle size of 1.5-20 μm and a purity of ≥9...

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Abstract

The invention discloses a spraying preparation method for a Cu / Mo / Cu composite thin plate. The spraying preparation method comprises the steps: cleaning a molybdenum substrate by adopting alkaline liquid, diluted hydrochloric acid and water in sequence, then performing ultrasonic washing by absolute ethyl alcohol, and blow-drying the substrate after cleaning; selecting Ni powder as transitional layer powder and Cu powder as spraying layer powder; putting the Ni powder and Cu powder into two powder conveyers of a spraying device, adjusting a spraying parameter so as to start spraying, spraying the Ni powder to two sides of the substrate at first to form transitional layers, and spraying the Cu powder on the transitional layers to form spraying layers so as to prepare a Cu / Mo / Cu composite plate blank; performing thermal treatment on the composite plate blank to obtain a Cu / Mo / Cu composite thin plate; performing flattening treatment and thermal treatment on the composite thin film through a fine roller to prepare the Cu / Mo / Cu composite thin plate finished product. The method disclosed by the invention has the advantages of high coating deposition rate, high working efficiency, controllable quality in a preparation process, high energy conservation, environment friendliness, zero pollution and the like and is extremely suitable for industrial application.

Description

technical field [0001] The invention relates to the field of electronic functional materials, in particular to a method for preparing a Cu / Mo / Cu composite thin plate by spraying, that is, a method for preparing a high-performance Cu / Mo / Cu alloy thin plate by aerodynamic spraying (cold spraying) technology. Background technique [0002] Molybdenum-copper alloy not only has the characteristics of high strength and low thermal expansion coefficient of molybdenum, it can be well matched and sealed with silicon substrates, gallium arsenide and other materials in electronic devices to avoid thermal fatigue failure caused by thermal stress; it also has good thermal conductivity Performance, therefore, is widely used in electronic packaging, heat sink materials, and some high-power basic current modules. The traditional preparation techniques of molybdenum-copper alloys include powder metallurgy and sintering infiltration. The powder metallurgy method is to mix molybdenum powder an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/08
CPCC23C24/087
Inventor 李辉朱跃峰朱敬超姚永亮林立尹甜甜刘娟
Owner KAIFENG UNIV
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