Theoretical Calculation of High Temperature Potential-pH Based on Fe-H2O, Cr-H2O and Zr-H2O Systems

Yang Yang; Yang Yu; Chen Yunmin; Cao Qi; Xiong Wei; Lu Yunyun; Wu Xiaoyong

doi:10.13832/j.jnpe.2022.01.0110

Volume 43 Issue 1

Feb. 2022

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Yang Yang, Yang Yu, Chen Yunmin, Cao Qi, Xiong Wei, Lu Yunyun, Wu Xiaoyong. Theoretical Calculation of High Temperature Potential-pH Based on Fe-H2O, Cr-H2O and Zr-H2O Systems[J]. Nuclear Power Engineering, 2022, 43(1): 110-115. doi: 10.13832/j.jnpe.2022.01.0110

Citation:

Yang Yang, Yang Yu, Chen Yunmin, Cao Qi, Xiong Wei, Lu Yunyun, Wu Xiaoyong. Theoretical Calculation of High Temperature Potential-pH Based on Fe-H₂O, Cr-H₂O and Zr-H₂O Systems[J]. Nuclear Power Engineering, 2022, 43(1): 110-115. doi: 10.13832/j.jnpe.2022.01.0110

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Theoretical Calculation of High Temperature Potential-pH Based on Fe-H₂O, Cr-H₂O and Zr-H₂O Systems

doi: 10.13832/j.jnpe.2022.01.0110

Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2021-03-02
Accepted Date: 2021-12-07
Rev Recd Date: 2021-12-22
Publish Date: 2022-02-01

Abstract

Abstract

From the perspective of thermodynamics, this paper uses the Nernst equation to calculate the potential-pH diagrams (E-pH diagrams) of the Fe-H₂O system, Cr-H₂O system and Zr-H₂O system at temperatures of 423 K and 573 K. This paper theoretically explain the corrosion behavior tendency of the main constituent elements of reactor structural materials of iron, chromium and zirconium in high temperature and high pressure water, which are affected by potential and pH. This provides data reference for the materials electrochemical corrosion tests in the water chemical environment in reactor, preventing the corrosion of the material, and extending the service life of the material.
- Thermodynamic calculation,
- Iron-water system,
- Chromium-water system,
- Zirconium-water system,
- High temperature,
- Potential-pH diagram

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References(14)

References

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