Corrosion Behavior of Alloy 690 after Cessation of Zinc Addition in Simulated PWR Primary Water at 330°C

2021 ◽  
pp. 153147
Author(s):  
Do Haeng Hur ◽  
Dong-Seok Lim ◽  
Soon-Hyeok Jeon
Keyword(s):  
Corrosion Behavior ◽  
Alloy 690 ◽  
Zinc Addition ◽  
Primary Water

Corrosion behavior for Alloy 690 and Alloy 800 tubes in simulated primary water

2013 ◽  
Vol 67 ◽  
pp. 169-178 ◽  
Author(s):  
Xiaohui Li ◽  
Jianqiu Wang ◽  
En-Hou Han ◽  
Wei Ke
Keyword(s):  
Corrosion Behavior ◽  
Alloy 800 ◽  
Alloy 690 ◽  
Primary Water

scholarly journals Effects of Zinc Addition on the Corrosion Behavior of Pre-Filmed Alloy 690 in Borated and Lithiated Water at 330 °C

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4105
Author(s):  
Soon-Hyeok Jeon ◽  
Dong-Seok Lim ◽  
Jinsoo Choi ◽  
Kyu-Min Song ◽  
Jong-Hyeon Lee ◽  
...  
Keyword(s):  
Oxide Layer ◽  
Corrosion Behavior ◽  
Release Rates ◽  
Corrosion Rates ◽  
Alloy 690 ◽  
Steam Generator Tubing ◽  
Subsequent Exposure ◽  
Zinc Addition ◽  
Zinc Cations ◽  
Tubing Material

The purpose of this work is to quantify the effects of dissolved zinc cations on corrosion and release rates from a pre-filmed Alloy 690 steam generator tubing material that was subsequently exposed to water containing zinc. The corrosion tests were performed in circulating 2 ppm Li and 1000 ppm B water without and with 60 ppb zinc at 330 °C. Gravimetric analyses and oxide characterization revealed that the corrosion rates, release rates, and oxide thicknesses decreased by subsequent exposure of the pre-filmed Alloy 690 to zinc. These benefits are attributed to the formation of a chromium-rich inner oxide layer incorporating zinc.

Effect of temperature on corrosion behavior of alloy 690 in high temperature hydrogenated water

2018 ◽  
Vol 34 (8) ◽  
pp. 1419-1427 ◽  
Author(s):  
Jiazhen Wang ◽  
Jianqiu Wang ◽  
Hongliang Ming ◽  
Zhiming Zhang ◽  
En-Hou Han
Keyword(s):  
High Temperature ◽  
Corrosion Behavior ◽  
Effect Of Temperature ◽  
Alloy 690

scholarly journals Effect of Ultrasonic Surface Rolling Treatment on Corrosion Behavior of Alloy 690

Metals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 917 ◽  
Author(s):  
Jiang Liu ◽  
Junbiao Liu ◽  
Xuehui Zhang ◽  
Tahir Ahmad ◽  
Tongxiang Liang ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Surface Layer ◽  
Corrosion Behavior ◽  
Electrochemical Corrosion ◽  
Coarse Grained ◽  
Alloy 690 ◽  
Average Grain Size ◽  
Before And After ◽  
Immersion Experiment ◽  
Secondary Side

The nanograins (NG) on the top surface layer of alloy 690 were successfully prepared by ultrasonic surface rolling treatment (USRT). The average grain size of NG alloy 690 was 55 nm, and the thickness of the NG surface layer was about 1 μm. Meanwhile, the surface roughness was significantly reduced after surface nanocrystalliztion. The corrosion behavior of alloy 690 before and after USRT was studied in a secondary side environment containing chloride. Electrochemical corrosion experiments demonstrated that the passive film generated by USRT was denser than that formed on coarse-grained (CG) alloy 690. Pitting corrosion was prone to occur in grain boundaries of CG alloy 690, and the pits on the surface of NG alloy 690 were smaller than those generated on CG alloy 690 after 1000 h of an immersion experiment.

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