System and method for testing breaking tenacity of material based on temperature-controllable electrochemical hydrogen charging environment

Abstract

The invention discloses a system and method for testing the breaking tenacity of a material based on a temperature-controllable electrochemical hydrogen charging environment. The method comprises the following steps: fixedly connecting a target material testing component, adding electrolyte, and inserting a temperature sensor, an auxiliary electrode, an extensometer and the like, and respectively connecting a temperature control assembly, an electrochemical working station, a stretcher and a computer; starting the electrochemical working station, carrying out electrolysis to produce a large amount of hydrogen on the surface of the target material testing component, and introducing hydrogen into the testing component through permeation and diffusion, so as to realize the hydrogen charging of the testing component; after reaching a set hydrogen charging time, starting the stretcher to carry out tensile experiment operation on the testing component, and calibrating breaking tenacity of a target material. According to the system, the performance parameters such as the breaking tenacity of the target material in a given hydrogen charging environment are synchronously measured.

Description

technical field [0001] The invention belongs to the field of material strength, and relates to a material fracture toughness test system and method in an electrochemical hydrogen charging environment. Background technique [0002] With the rapid development of society, fossil energy is gradually becoming exhausted, which will not be able to support the needs of rapid economic development, and new high-efficiency energy sources need to be proposed urgently. As a clean energy, hydrogen energy is expected to replace fossil energy and become a major secondary energy at the end of the petroleum age. However, hydrogen storage materials and technologies are far from the practical application of hydrogen energy. They cannot meet the practical requirements in terms of hydrogen storage density per unit mass and volume, operating temperature, reversible cycle performance, and safety. The ultimate practical application of hydrogen energy also depends on the safety standards of the hydr...

AI Technical Summary

Problems solved by technology

[0004] However, for testing the fracture toughness of high-pressure hydrogen storage equipment, a relatively systematic and complete experimental operation plan has not been formed.

The traditional material fracture toughness testing device separates the hydrogen charging environment from the fracture toughness experiment research, and cannot provide real-time electrochemical hydrogen charging environment during the experiment, let alone change the temperature of the hydrogen charging environment.

In addition, torque and bending moment may be generated during the installation of the sample, which will affect the experimental results

Therefore, when conducting experimental research on material properties, it is impossible to truly and effectively simulate the environment in which the high-pressure hydrogen storage pressure vessel is located to ensure the influence of the hydrogen environment on its organizational structure, so there are also major problems in the reliability of the final experimental data

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