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Multiple layer hydrogen infiltration -resistant compound film preparation method

A composite membrane and hydrogen-resistance technology, applied in the field of materials, to achieve controllable thickness, improve hydrogen permeation resistance and corrosion resistance, and improve high-temperature oxidation resistance and wear resistance

Inactive Publication Date: 2008-09-17
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to overcome the shortcomings of the current single aluminum and its alloy coating and micro-arc oxidation, and to form a multi-layer in situ on the stainless steel substrate by using the aluminum and its alloy coating of the stainless steel substrate and the micro-arc oxidation technology. Hydrogen permeation-resistant composite membrane, so as to achieve the purpose of anti-hydrogen permeation

Method used

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  • Multiple layer hydrogen infiltration -resistant compound film preparation method
  • Multiple layer hydrogen infiltration -resistant compound film preparation method
  • Multiple layer hydrogen infiltration -resistant compound film preparation method

Examples

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Embodiment 1

[0024] The stainless steel that has been thermally sprayed with aluminum is subjected to micro-arc oxidation, and the electrolyte is 8g / L Na 2 SiO 3 solution, the constant current method is adopted in the reaction process, and the current density is 10A / dm2 , the micro-arc oxidation time is 20 minutes, figure 1 and figure 2 The cross-sectional metallography and surface morphology of the prepared hydrogen permeable barrier composite membrane, respectively.

Embodiment 2

[0026] The stainless steel alloyed with aluminum is subjected to micro-arc oxidation, and the electrolyte is 10g / L Na 2 SiO 3 solution with a current density of 20A / dm 2 , the cross-sectional metallography of the obtained multilayer hydrogen permeable barrier composite membrane is as follows image 3 shown.

Embodiment 3

[0028] Perform micro-arc oxidation on stainless steel that has undergone magnetron sputtering aluminum, and the electrolyte is 8g / L Na 2 SiO 3 +2g / L Na 2 B 4 o 7 The mixed solution, the surface morphology of the obtained multilayer hydrogen permeation barrier composite membrane is as follows Figure 4 shown.

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Abstract

The invention relates to a method for preparing a multi-layer hydrogen-permeation-resisting composite membrane, and belongs to the material technology field. The method adopts a coupling technique of aluminum and aluminum alloy coating and micro-arc oxidation to form the multi-layer hydrogen-permeation-resistance composite membrane at the home position on a stainless steel basal body, the composite membrane comprises an alloy layer formed by the basal body and coating metal, a coating metal layer, a composite layer formed by the coating metal and oxide ceramic and an oxide ceramic layer, etc., as shown in picture 1. Compared with the prior art, the method has the advantages of the aluminum and aluminum alloy coating and the micro-arc oxidation, overcomes the defect of the prior single technique, and forms the multi-layer hydrogen-permeation-resistance composite membrane with high capability; the ceramic layer thereof has controllable thickness, high compactness, good quality, and firm combination with the basal body, thereby enhancing the hydrogen-permeation-resisting and the corrosion-resisting properties of the stainless steel, improving the hot oxidation resistance and the abrasion resistance of the stainless steel, prolonging service life of the stainless steel container, and strengthening safety precautions.

Description

technical field [0001] The invention relates to a preparation method of a multilayer hydrogen permeation resistance composite membrane, which belongs to the field of material technology. Background technique [0002] Systems using hydrogen as fuel, especially nuclear fusion reactors / hybrid reactor systems using deuterium and hydrogen as fuels, have serious material problems such as corrosion, embrittlement, permeation, and retention. Due to the strict requirements of physical and chemical properties, electrical and mechanical properties, and the compatibility with multiplication materials and coolants, the materials that can be used as fusion reactor components are currently limited to austenitic and high-chromium martensitic stainless steel, vanadium, Titanium, niobium, molybdenum and other metals and alloy materials are expected to have the best possible hydrogen permeation resistance. However, these materials cannot well meet the actual engineering needs. In order to av...

Claims

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Application Information

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IPC IPC(8): C25D11/04C23C30/00
Inventor 闫康平张宇王贵欣
Owner SICHUAN UNIV
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