Corrosion behavior of Ni-based structural materials for electrolytic reduction in lithium molten salt

Cho, Soo Haeng; Park, Sung Bin; Lee, Sang-Kwon; Hur, Jin‐Mok; Lee, Han Soo

doi:10.1016/j.jnucmat.2011.02.047

Cited by 14 publications

(2 citation statements)

References 18 publications

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“…The isothermal and cyclic corrosion tests are, therefore, necessary for characterising high-temperature materials and assessing their performance. There are several studies on the isothermal and cyclic high-temperature corrosion behaviours of Ni-based superalloys in the literature [32][33][34][35][36][37][38][39][40][41][42][43]; however, only a few reports have elucidated the isothermal and cyclic high-temperature corrosion behaviours of Ni-based superalloys in LiCl-Li 2 O molten salt under an oxidising atmosphere, which is the subject of this study.…”

Section: Introductionmentioning

confidence: 99%

“…In electrolytic reduction processes for spent oxide nuclear fuel in LiCl-Li 2 O molten salt, the generation of oxygen at the anode and the high-temperature lithium molten salts creates a chemically aggressive environment that is excessively corrosive for ordinary structures [6,33]. Therefore, it is inevitable to utilise optimum Ni-based superalloys applicable to this process.…”

Section: Introductionmentioning

confidence: 99%

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Isothermal and cyclic corrosion behaviour of Ni-based alloys in an electrochemical reduction process

Woo

Lim

Kim

et al. 2021

Corrosion Engineering, Science and Technology

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In this study, the isothermal and cyclic corrosion behaviours of Haynes 282 and Haynes 214 in a lithium molten salt were investigated at 650°C for 168 h and 7 thermal cycles, respectively; this was achieved by measuring the mass changes, surface and cross-sectional morphologies with their elemental distributions, and compositional changes in the subscale, substrate and spalled oxide scale. The weight loss of Haynes 282 comprising an external corrosion layer was approximately four times lower than that of Haynes 214 with a spalled external corrosion layer, depending on the effects of their alloying elements and the preservation, spallation and dissolution of the corrosion layer. After 168 h and 7 thermal cycles, corrosion products of Haynes 282 were Cr 2 O 3 and CoCr 2 O 4 and those of Haynes 214 were Cr 2 O 3 , LiFeO 2 and FeCr 2 O 4 . In addition, the internal corrosion layers of Haynes 282 and Haynes 214 exhibited localised and uniform corrosion behaviours, respectively.

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