A device and method for dynamically measuring hydrogen trap parameters of metal materials

A technology of trap parameters and metal materials, applied in the direction of material electrochemical variables, etc., can solve problems such as large measurement errors, cumbersome installation, and complicated equipment, and achieve the effects of low cost, meeting the test temperature requirements, and convenient installation

Active Publication Date: 2021-01-05
ZHEJIANG UNIV +1
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  • Claims
  • Application Information

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Problems solved by technology

At present, most of the experimental devices that can be used to study the behavior of hydrogen entering the interior of materials are complicated in equipment, cumbersome to install, and have large measurement errors in hydrogen trap parameters, and cannot test the hydrogen trap characteristics of metal materials under the coupling effects of stress, temperature and hydrogen.

Method used

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  • A device and method for dynamically measuring hydrogen trap parameters of metal materials
  • A device and method for dynamically measuring hydrogen trap parameters of metal materials
  • A device and method for dynamically measuring hydrogen trap parameters of metal materials

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Embodiment Construction

[0034] In the present invention, the hollow rod-shaped sample is made of metal material, usually austenitic stainless steel, low carbon steel or pipeline steel. Hydrogen traps are created by applying a force to the specimen to strain the specimen. H 2 SO 4 The hydrogen charging solution refers to the H used for hydrogen charging 2 SO 4 solution. H 2 SO 4 Both the hydrogen charging solution and the NaOH solution were prepared in a conventional manner.

[0035] The device for dynamically measuring the parameters of the hydrogen trap of metal materials in this embodiment is as follows: figure 1 and figure 2 As shown, it includes a temperature control system, a hydrogen trap parameter testing system, a mechanical stress loading device and a general control system; the temperature control system consists of a hydrogen-filled solution storage tank 1, a circulating pump 2, an inflow flowmeter 6, and a return flowmeter 4 It is composed of a heat exchange box 5, the adjustab...

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Abstract

The invention relates to material mechanical property testing equipment, and aims to provide a device and a method for dynamically measuring hydrogen trap parameters of a metal material. The device comprises a mechanical stress loading device, a hydrogen trap parameter testing system, a temperature control system and a master control system, wherein the hydrogen trap parameter testing system comprises an electrochemical workstation, a galvanostat, a test box and a hollow rod-shaped sample; the hollow rod-shaped sample penetrates through the test box, two ends of the hollow rod-shaped sample extend out, a cavity between the sample and the test box forms an external electrolytic cell, and a platinum sheet connected with the galvanostat is arranged in the external electrolytic cell; and an inner cavity of the hollow rod-shaped sample forms an internal electrolytic cell, and a reference electrode and an auxiliary electrode which are connected with the electrochemical workstation are arranged in the internal electrolytic cell. The device is simple in overall structure, convenient to install and low in cost; when the hollow rod-shaped sample is stretched, the external electrolytic cell and the internal electrolytic cell work synchronously, measurement of hydrogen trap parameters under the stress and hydrogen coupling effect is achieved, and the change of the hydrogen trap parametersof the metal material in the service process can be truly reflected.

Description

technical field [0001] The invention belongs to testing equipment for mechanical properties of materials, in particular to a device and method for dynamically measuring hydrogen trap parameters of metal materials. Background technique [0002] Hydrogen energy is a clean and efficient secondary energy, and is considered to be an important bridge connecting fossil energy to renewable energy. Vigorously developing hydrogen energy is an important measure for my country to transform energy consumption structure, ensure energy security, alleviate smog, promote greenhouse gas emission reduction, and maintain sustainable economic development. However, when metal materials are used in certain environments (such as high-temperature and high-pressure hydrogen environments, solutions containing hydrogen sulfide, or other acidic aqueous solutions), hydrogen will enter the interior of the materials. After hydrogen enters, it will degrade the properties of the material (such as reducing t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/26
CPCG01N27/26
Inventor 尚娟熊思江郑津洋胡腾顾超华张银广花争立鲁仰辉李松乔
Owner ZHEJIANG UNIV
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