Effect of Zn Addition on Behavior of Deposited Co in Oxide Scales of Alloys in PWR Primary Water

doi:10.11902/1005.4537.2013.090

Journal of Chinese Society for Corrosion and protection

2014, Vol. 34

Issue (2): 192-194 DOI: 10.11902/1005.4537.2013.090

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Effect of Zn Addition on Behavior of Deposited Co in Oxide Scales of Alloys in PWR Primary Water

DUAN Zhengang¹, ZHANG Lefu¹, JIANG Suqing¹, SHI Xiuqiang², XU Xuelian²

1. School of Nuclear Science and Engineering, Shanghai Jiaotong University, Shanghai 200240,China;
2. Shanghai Municipal Key Laboratory of Nuclear Power Engineering，Shanghai Nuclear Engineering Research &Design Institute, Shanghai 200233, China

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Abstract In order to simulate the deposition of Co oxide on the surface of PWR structural materials during service, oxide scales doped with Co on stainless steels 316 and 304, and alloy 690 were prepared by soacking them in a high temperature solution containing Co ions. Then the effect of Zn addition on the behavior of the deposited Co in oxide scales was studied in a simulated PWR primary water with Zn addition at 315 ℃. The results show that the presence of Co changes the morphology of oxide scales, while in the simulated PWR water the added Zn may displace the deposited Co in the oxide scales.

Key words: PWR zinc addition cobalt oxidescale

Received: 10 December 2013

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DUAN Zhengang, ZHANG Lefu, JIANG Suqing, SHI Xiuqiang, XU Xuelian. Effect of Zn Addition on Behavior of Deposited Co in Oxide Scales of Alloys in PWR Primary Water. Journal of Chinese Society for Corrosion and protection, 2014, 34(2): 192-194.

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https://www.jcscp.org/EN/10.11902/1005.4537.2013.090 OR https://www.jcscp.org/EN/Y2014/V34/I2/192

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