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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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 b

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

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] Example 1

[0024] Micro-arc oxidation is performed on stainless steel that has been thermally sprayed with aluminum, and the electrolyte is 8g / L Na 2 SiO 3 Solution, the constant current method is used during the reaction, the current density is 10A / dm2 , The micro-arc oxidation time is 20 minutes, figure 1 with figure 2 They are the metallographic and surface morphology of the cross-section of the hydrogen-permeable composite membrane prepared.

Example Embodiment

[0025] Example 2

[0026] Micro-arc oxidation is performed on stainless steel alloyed with aluminum, and the electrolyte is 10g / L Na 2 SiO 3 Solution, current density is 20A / dm 2 , The cross-section of the multilayer hydrogen-permeable composite membrane obtained is as metallographic as image 3 Shown.

Example Embodiment

[0027] Example 3

[0028] Micro-arc oxidation is performed on stainless steel that has been magnetron sputtered aluminum, and the electrolyte is 8g / L Na 2 SiO 3 +2g / L Na 2 B 4 O 7 The surface morphology of the 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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