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Preparation method of heat stability-enhanced porous silver-magnesium-aluminum alloy film

A magnesium-aluminum alloy, thermal stability technology, applied in metal material coating process, ion implantation plating, coating, etc., can solve the problem of high cost, large-scale production and application limitations of porous silver-based thin films, complex preparation process, etc. problem, to achieve high absorption rate, inhibit migration ability, and improve thermal stability

Inactive Publication Date: 2017-08-04
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Preparation method of heat stability-enhanced porous silver-magnesium-aluminum alloy film
  • Preparation method of heat stability-enhanced porous silver-magnesium-aluminum alloy film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step A: preparation of silver-magnesium-aluminum alloy film;

[0023] A quartz substrate deposited with a 100 nanometer NiCr reflective layer is used as the substrate, and the substrate is placed in a vacuum degree better than 1×10 -3 Under the condition of Pa, the substrate is heated to 120°C for preheating treatment, and the preheating time is 60 minutes; after the preheating treatment is completed, the magnetron sputtering process is used to deposit on the substrate to obtain Mg content of 54%, Al content 6% silver-magnesium-aluminum composite film with an Ag content of 40%, and the thickness of the film is 300 nanometers;

[0024] Step B: preparation of porous silver-magnesium-aluminum alloy film;

[0025] Place the silver-magnesium composite film prepared in step A in an acetic acid solution with a concentration of 2%, and corrode it for 1 minute; then take it out and wash it with deionized water, and then soak it in absolute ethanol for 3 to 5 minutes. Drying tr...

Embodiment 2

[0029] Step A: preparation of silver-magnesium-aluminum alloy film;

[0030] A quartz substrate deposited with a 100 nanometer NiCr reflective layer is used as the substrate, and the substrate is placed in a vacuum degree better than 1×10 -3 Under the condition of Pa, heat the substrate to 120°C for preheating treatment, and the preheating time is 60 minutes; after completing the preheating treatment, the magnetron sputtering process is used to deposit on the substrate to obtain Mg content of 50%, Al content 10% silver-magnesium-aluminum composite film with an Ag content of 40%, and the thickness of the film is 300 nanometers;

[0031] Step B: preparation of porous silver-magnesium-aluminum alloy film;

[0032] Place the silver-magnesium composite film prepared in step A in an acetic acid solution with a concentration of 2%, and corrode it for 1 minute; then take it out and wash it with deionized water, and then soak it in absolute ethanol for 3 to 5 minutes. Drying treatmen...

Embodiment 3

[0036] Step A: preparation of silver-magnesium-aluminum alloy film;

[0037] A quartz substrate deposited with a 100nm NiCr reflective layer is used as the substrate, and the substrate is placed under the condition that the degree of vacuum is better than 1×10-3Pa, and the substrate is heated to 120°C for preheating. The time is 60 minutes; after the preheat treatment is completed, the magnetron sputtering process is used to deposit on the substrate to obtain a silver-magnesium-aluminum composite film with a Mg content of 57%, an Al content of 3%, and an Ag content of 40%. The thickness is 500 nanometers;

[0038] Step B: preparation of porous silver-based composite;

[0039] Place the silver-magnesium composite film prepared in step A in an acetic acid solution with a concentration of 2%, and corrode it for 1 minute; then take it out and wash it with deionized water, and then soak it in absolute ethanol for 3 to 5 minutes. Drying treatment obtains a porous silver-magnesium-al...

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Abstract

The invention discloses a preparation method of a heat stability-enhanced porous silver-magnesium-aluminum alloy film, and relates to the technical field of photoelectric materials. The preparation method comprises the following steps: firstly preparing a silver-magnesium-aluminum alloy film through a thin film deposition technology, wherein the silver-magnesium-aluminum alloy film is prepared from the following chemical components in percentage by mass: 50 to 60 percent of a magnesium element, 3 to 10 percent of an aluminum element and 30 to 47 percent of a silver element; and then corroding active metals through dealloying reaction liquid, thus forming a nano porous structure which takes silver as a framework and is doped with a little of aluminum and magnesium. After being subjected to high temperature treatment, the porous silver-magnesium-aluminum alloy film prepared through the preparation method still can keep the porous structure, so that a relatively wide absorption spectrum and a relatively good absorption effect can be kept. The preparation process is simple, the repetitiveness is high, and the cost is low; the shortcoming in the heat stability of a porous silver-based film in the prior art can be overcome; and actual popularization and application of the porous silver-based film are facilitated.

Description

technical field [0001] The invention relates to the technical field of photoelectric materials, in particular to a method for preparing a heat-stability-enhanced porous silver-magnesium-aluminum alloy film. Background technique [0002] Nanoporous materials are a kind of nanomaterials with pore characteristics, and their pore diameters are generally between 0.1 and 100nm. Compared with bulk materials, nanoporous materials have special effects such as quantum size effect, surface effect and tunnel effect. , so that it shows special optical, electrical and magnetic properties, so it has attracted more and more attention in recent years, such as reference: "Electrochemically prepared porous silver and its application in surface- Enhanced Raman scattering" ("Porous silver prepared electrochemically and its application in surface enhanced Raman scattering"). Among many porous metal materials, nanoporous silver films are widely used in photocatalysis and surface-enhanced Raman sc...

Claims

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Application Information

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IPC IPC(8): C23C14/35C23C14/16C23C14/18C23C14/58
CPCC23C14/35C23C14/165C23C14/185C23C14/5873
Inventor 顾德恩丁竹林谭攀徐世洋郑宏航蒋亚东
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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