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Apparatus and method for research erosion sensibility of stress in air under the condition of dynamic load

A stress corrosion and sensitive technology, applied in weather resistance/light resistance/corrosion resistance, measuring devices, instruments, etc., can solve problems such as hydrogen permeation current measurement, achieve low cost, high precision, and simple operation

Inactive Publication Date: 2007-05-16
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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Problems solved by technology

[0005] In order to overcome the deficiencies in the research on the sensitivity of stress corrosion cracking in the atmospheric environment under dynamic load conditions under the existing conditions, the object of the present invention is to provide a device and method for studying the sensitivity of stress corrosion cracking of metals in the atmosphere under dynamic load conditions, Solve problems such as hydrogen permeation current measurement under dynamic load conditions

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  • Apparatus and method for research erosion sensibility of stress in air under the condition of dynamic load
  • Apparatus and method for research erosion sensibility of stress in air under the condition of dynamic load
  • Apparatus and method for research erosion sensibility of stress in air under the condition of dynamic load

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Embodiment Construction

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0032] The present invention comprises an electrolytic cell, a liquid reservoir 10, a sample 15 as a working electrode, a nickel wire 14 fixed inside the sample 15, the sample 15 passes through the electrolytic cell and the working section is inside the electrolytic cell, and the sample 15 is used as a working electrode. Electrode, nickel wire 14 is used as reference electrode and auxiliary electrode at the same time, sample 15 and nickel wire 14 form a set of three-electrode system, and lead wires are respectively drawn out to connect with the port of the data collector.

[0033] As shown in Figures 1 to 3, the electrolytic cell includes an upper cover 1, an outer cylindrical side wall 5, an inner cylindrical side wall 7 and a bottom plate 2, and a liquid storage tank 10 is formed between the inner and outer cylindrical side walls. The top of the inner cylin...

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Abstract

This invention relates to one device and method to study metal stress erosion crack sensitivity, wherein, the device comprises electrolyte pool, storage pool, test sample, nickel wire inside sample through electrolyte pool set inside of electrolyte pool; it inserts test sample with nickel wire inside electrolyte pool to keep sample work section inside electrolyte pool as cathode pool and the test inside as anode pool; the storage pool is poured with medium to test work section surface and to connect sample two sides into drive machine for stretching and measurement.

Description

technical field [0001] The invention relates to a device and a method for studying the sensitivity of metal stress corrosion cracking, in particular to a device and a method for studying the sensitivity of stress corrosion cracking of metal materials in an atmospheric environment under dynamic load conditions. Background technique [0002] Hydrogen evolution reaction will occur during the metal corrosion process, and hydrogen will have a serious impact after entering the lattice of sensitive materials and cause embrittlement of sensitive materials, embrittlement will lead to the formation of cracks in sensitive materials and accelerate the expansion, affecting the structure of sensitive materials Safety. Moreover, it has been proved by experiments that the essence of atmospheric corrosion is the electrochemical corrosion of metals under the electrolyte film, and the dry-wet cycle can accelerate atmospheric corrosion and hydrogen permeation of steel. Hydrogen permeation beha...

Claims

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Application Information

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IPC IPC(8): G01N17/02
Inventor 郑传波黄彦良朱永艳于青
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI