Effect of electroplating time and temperature on hydrogen diffusion coefficient of U78CrV steel

Feng Kai; Li Ying; Zou Ming; Yuan Jun; Ding Yushi

doi:10.7513/j.issn.1004-7638.2022.05.022

Volume 43 Issue 5

Nov. 2022

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Feng Kai, Li Ying, Zou Ming, Yuan Jun, Ding Yushi. Effect of electroplating time and temperature on hydrogen diffusion coefficient of U78CrV steel[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(5): 153-157. doi: 10.7513/j.issn.1004-7638.2022.05.022

Citation:

Feng Kai, Li Ying, Zou Ming, Yuan Jun, Ding Yushi. Effect of electroplating time and temperature on hydrogen diffusion coefficient of U78CrV steel[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(5): 153-157. doi: 10.7513/j.issn.1004-7638.2022.05.022

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Effect of electroplating time and temperature on hydrogen diffusion coefficient of U78CrV steel

doi: 10.7513/j.issn.1004-7638.2022.05.022

Feng Kai^{1, 2
,},
Li Ying^{1, 2
,
,},
Zou Ming³,
Yuan Jun³,
Ding Yushi^{1, 2}

1.
School of Metallurgy, Northeast University, Shenyang 110819, Liaoning, China
2.
Liaoning Provincial Key Laboratory of Metallurgical Sensors and Technologies, Shenyang 110819, Liaoning, China
3.
Pangang Group Research Institute Co., Ltd., Chengdu 610303, Sichuan, China

Received Date: 2022-03-01
Publish Date: 2022-11-01

Abstract

Abstract

Hydrogen can cause hydrogen embrittlement of steel, resulting in a decrease in the material's mechanical properties. The harmful effect of hydrogen atoms on steel is caused by diffusion. Therefore, understanding the diffusion behavior of hydrogen atoms in steel is significant in preventing hydrogen bubbling and embrittlement. In this paper, electrochemical hydrogen permeation technology is used, a constant cathode current is applied, and the hydrogen permeation parameters of U78CrV steel are studied by changing the sample plating time and test temperature, respectively. The influence of different plating times and test temperatures on the hydrogen diffusion coefficient of U78CrV steel is analyzed. The research results show that too short and too long electroplating time will reduce the anodic polarization current and affect the ionization of hydrogen atoms to form hydrogen ions. When the electroplating time is 360 seconds, the nickel layer formed has the best effect. The increase in the test temperature will increase the hydrogen permeability and diffusion coefficient. The activation energy of hydrogen diffusion in U78CrV steel is 19371 J/mol.
- heavy rail steel,
- hydrogen diffusion coefficient,
- electrochemical hydrogen permeation mothod,
- diffusion activation energy

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References(8)

References

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