Study on Surface Passivation of 304L Stainless Steel under the Condition of Primary Water Chemistry in PWR Nuclear Power Plant

Cheng Wei; Jin Chengyi; Ji Dapeng; Wang Lei; Liu Hang; Wang Haochuan; Li Huaru

doi:10.13832/j.jnpe.2023.06.0254

Volume 44 Issue 6

Dec. 2023

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Cheng Wei, Jin Chengyi, Ji Dapeng, Wang Lei, Liu Hang, Wang Haochuan, Li Huaru. Study on Surface Passivation of 304L Stainless Steel under the Condition of Primary Water Chemistry in PWR Nuclear Power Plant[J]. Nuclear Power Engineering, 2023, 44(6): 254-259. doi: 10.13832/j.jnpe.2023.06.0254

Citation:

Cheng Wei, Jin Chengyi, Ji Dapeng, Wang Lei, Liu Hang, Wang Haochuan, Li Huaru. Study on Surface Passivation of 304L Stainless Steel under the Condition of Primary Water Chemistry in PWR Nuclear Power Plant[J]. Nuclear Power Engineering, 2023, 44(6): 254-259. doi: 10.13832/j.jnpe.2023.06.0254

Citation:

Cheng Wei, Jin Chengyi, Ji Dapeng, Wang Lei, Liu Hang, Wang Haochuan, Li Huaru. Study on Surface Passivation of 304L Stainless Steel under the Condition of Primary Water Chemistry in PWR Nuclear Power Plant[J]. Nuclear Power Engineering, 2023, 44(6): 254-259. doi: 10.13832/j.jnpe.2023.06.0254

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Study on Surface Passivation of 304L Stainless Steel under the Condition of Primary Water Chemistry in PWR Nuclear Power Plant

doi: 10.13832/j.jnpe.2023.06.0254

Cheng Wei^{1, 2
,},
Jin Chengyi^{1, 2},
Ji Dapeng^{1, 2},
Wang Lei^{1, 2},
Liu Hang^{1, 2},
Wang Haochuan³,
Li Huaru^{1, 2}

1.
State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment, Shenzhen, Guangdong, 518172, China
2.
China Nuclear Power Engineering Co., Ltd., Shenzhen, Guangdong, 518026, China
3.
China Nuclear Power Design Co., Ltd., (Shenzhen), Shenzhen, Guangdong, 518124, China

Received Date: 2023-02-10
Rev Recd Date: 2023-05-14
Publish Date: 2023-12-15

Abstract

Abstract

The passivation reaction process of 304L stainless steel (304L SS) in the primary B+Li water chemistry environment of PWR nuclear power plant was simulated experimentally, and the effects of time and temperature changes on the passivation reaction process were studied. The results show that the oxide films grown formed by passivation on the surface of 304L SS has a double-layer structure, and the oxide films grown is in a state of continuous growth within 300 h, and the film thickness and corrosion resistance are positively correlated with passivation time. Increasing the passivation temperature can make the oxide films grown on the surface of 304L SS grow more evenly, thus improving the overall corrosion resistance of the oxide film on the surface. Based on the experimental results, this paper analyzes and puts forward a comprehensive growth model of oxide film, and discusses the engineering prospect of applying relevant conclusions to the first passivation test of hot functional testing.
- 304L stainless steel,
- Passivation test,
- Oxide films grown

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References(7)

References

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