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A device and method for studying hydrogen permeation behavior of metals in acidic atmospheric medium

An acidic and atmospheric technology, applied in the field of devices for studying metal hydrogen permeation behavior, to achieve the effects of simple operation, reduced impact, and low cost

Active Publication Date: 2011-12-21
河北维立方科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing double electrolytic cells adopt the design of the left and right sides, and both sides are solutions. At present, there is no suitable method and device to evaluate the hydrogen permeation behavior of metals in acidic atmospheric media.

Method used

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  • A device and method for studying hydrogen permeation behavior of metals in acidic atmospheric medium
  • A device and method for studying hydrogen permeation behavior of metals in acidic atmospheric medium
  • A device and method for studying hydrogen permeation behavior of metals in acidic atmospheric medium

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Experimental program
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Embodiment 1

[0029] figure 1 It is a schematic diagram of the structure of the electrolytic cell used in the present invention. The environmental pool cavity 1, the anode pool cavity 2 and the liquid storage bottle 15 are all made of non-conductive materials resistant to acid and alkali and high temperature.

[0030] figure 1 In , the environmental pool includes an environmental pool cavity 1 and an environmental pool top cover 3 . Sealant is used to seal between the environment pool chamber body 1 and the environment pool upper cover 3 . The lower part of the environment pool cavity 1 is placed in the water bath pot 16, and the water bath is heated. The temperature / humidity meter 4 extends into the interior of the chamber body 1 of the environment pool through the hole on the upper cover 3 of the environment pool, and the junction is sealed with a sealant. The temperature / humidity meter 4 is located at the same height as the working electrode 10 of the sample to be tested, which is co...

Embodiment

[0037] Example: Determination of the hydrogen permeation performance of Aermet100 ultra-high strength steel samples in acidic atmospheric media.

[0038] Sample size: diameter 23mm, thickness 0.8mm;

[0039] Sample treatment: After the sample is polished with No. 1000 sandpaper, nickel-plated on one side (nickel-plating solution is 250g / L NiSO 4 ·6H2 O+45g / L NiCl 2 +40g / L H 3 BO 4 mixture).

[0040] Hydrogen permeability measurement process: the distance between the reference electrode and the surface of the working electrode of the sample to be tested is 1mm, and the hydrogen release solution used in the anode cell is 0.1mol / L NaOH solution. A constant potential of 0.3V was applied to the working electrode in the anode cell. After the residual current is stable, the acidic solution enters the environmental pool to form a hydrogen-filled atmosphere. The hydrogen filling atmosphere is 0.5M H 2 SO 4 +0.25g / L As 2 o 3 The solution is an acidic atmospheric medium formed ...

Embodiment 2

[0044] figure 1 It is a schematic diagram of the structure of the electrolytic cell used in the present invention. The environmental pool cavity 1, the anode pool cavity 2 and the liquid storage bottle 15 are all made of non-conductive materials resistant to acid and alkali and high temperature.

[0045] figure 1 In , the environmental pool includes an environmental pool cavity 1 and an environmental pool top cover 3 . Sealant is used to seal between the environment pool chamber body 1 and the environment pool upper cover 3 . The lower part of the environment pool cavity 1 is placed in the water bath pot 16, and the water bath is heated. The temperature / humidity meter 4 extends into the interior of the chamber body 1 of the environment pool through the hole on the upper cover 3 of the environment pool, and the junction is sealed with a sealant. The temperature / humidity meter 4 is located at the same height as the working electrode 10 of the sample to be tested, which is co...

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Abstract

The invention relates to a device and a method for research on hydrogen permeation of metal, in particular to a device and a method for research on hydrogen permeation of metal in acidic atmospheric medium with an adjustable pH value. The device comprises an environmental tank, an anode tank and a liquid storage bottle. A specimen to be tested is fixed at an opening at the bottom of the anode tank, and electrolyte in the anode tank adopts NaOH solution. Acidic solution in the environmental tank can form an acidic atmospheric medium environment under a water bath. Three electrodes are connected with corresponding ports of an electrochemical working system through wires. By adopting the device and the method, the hydrogen permeation current of metal materials in the acidic atmospheric medium can be measured, gas-phase components can be controlled, and the relevant defects of the conventional double electrolytic tanks for electrochemical hydrogen permeation can be overcome.

Description

[0001] technical field [0002] The invention relates to a device and a method for studying the hydrogen permeation behavior of a metal, in particular to a device and a method for studying the hydrogen permeation behavior of a metal in an acidic atmospheric medium with adjustable pH. Background technique [0003] When bare metals serve in acidic atmospheric medium, hydrogen evolution reaction will occur on the surface. When hydrogen atoms enter the structure of sensitive materials, they will cause stress corrosion cracking behavior characterized by hydrogen embrittlement, which seriously affects the structural safety of sensitive materials. Undoubtedly, in the acidic atmospheric medium, whether hydrogen atoms can penetrate into the interior of the metal determines the stress corrosion cracking susceptibility of the metal to a large extent. Therefore, it is necessary to study the hydrogen permeation behavior of metals in acidic atmospheric media, and use this as a basis for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/26G01N1/28
Inventor 董超芳胡亚博肖葵孙敏刘智勇李晓刚
Owner 河北维立方科技有限公司
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