Study on Oxidation Corrosion of Nuclear Graphite by Water Vapor

Shen Teng; Wang Chengyu; Guo Shaoqiang; He Kai

doi:10.13832/j.jnpe.2024.090008

Volume 46 Issue 4

Aug. 2025

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Shen Teng, Wang Chengyu, Guo Shaoqiang, He Kai. Study on Oxidation Corrosion of Nuclear Graphite by Water Vapor[J]. Nuclear Power Engineering, 2025, 46(4): 152-158. doi: 10.13832/j.jnpe.2024.090008

Citation:

Shen Teng, Wang Chengyu, Guo Shaoqiang, He Kai. Study on Oxidation Corrosion of Nuclear Graphite by Water Vapor[J]. Nuclear Power Engineering, 2025, 46(4): 152-158. doi: 10.13832/j.jnpe.2024.090008

Shen Teng, Wang Chengyu, Guo Shaoqiang, He Kai. Study on Oxidation Corrosion of Nuclear Graphite by Water Vapor[J]. Nuclear Power Engineering, 2025, 46(4): 152-158. doi: 10.13832/j.jnpe.2024.090008

Citation:

Shen Teng, Wang Chengyu, Guo Shaoqiang, He Kai. Study on Oxidation Corrosion of Nuclear Graphite by Water Vapor[J]. Nuclear Power Engineering, 2025, 46(4): 152-158. doi: 10.13832/j.jnpe.2024.090008

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Study on Oxidation Corrosion of Nuclear Graphite by Water Vapor

doi: 10.13832/j.jnpe.2024.090008

Shen Teng^1
,,
Wang Chengyu^{2, 3},
Guo Shaoqiang^{2
,
,},
He Kai¹

1.
China Nuclear Power Engineering Co., Ltd., Beijing, 100840, China
2.
School of Nuclear Science and Technology, Xi’an Jiaotong University, Xi’an, 710049, China
3.
School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai, 200240, China

Received Date: 2024-09-09
Rev Recd Date: 2024-11-04
Publish Date: 2025-08-15

Abstract

Abstract

In order to study the oxidation reaction properties of nuclear graphite by water vapor and establish the graphite-water vapor corrosion reaction model based on classical Langmuir-Hinshelwood (L-H) model, we conducted the experiments on the oxidation corrosion of graphite by water vapor based on gas concentration method. The experiment results demonstrated that CO₂ was generated at the temperature higher than 950℃ or 1000℃ in the experimental condition of the helium and water vapor mixed gas flow rate of 10 L/min and the water vapo concentration of 3% to 10%, and the mixture added with 1% H₂ has no obviously influence on reaction rate, which had obviously difference with classical L-H model. As a result, new reaction model was established based on the experiment results, which added the oxidation reaction of graphite by water vapor generating CO₂ and H₂ and removed the H₂ partial pressure term in L-H model. The experiment data was used to build a new model and verify the model respectively. The study results demonstrated that the new model was suitable for the simulation of oxidation of graphite by water vapor at a relative high water vapor concentration, which could relatively accurately analyze and calculate the corrosion rate and gas generating rate.
- Nuclear graphite,
- Water vapor,
- Activation energy,
- Oxidation corrosion,
- Reaction mechanism

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References(15)

References

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