Corrosion characteristics and oxide microstructures of Zircaloy-4 in aqueous alkali hydroxide solutions

Jeong, Yong-Jin; Baek, Jaewook; Kim, S.J.; Kim, H.G.; Ruhmann, H

doi:10.1016/s0022-3115(99)00008-2

Cited by 41 publications

(14 citation statements)

References 5 publications

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“…As a next step in this investigation, the proposed model will be applied to data on the effect of Li content in simulated PWR water on the initial stages of oxidation of E110 in Zircaloy 4 in such medium. This study is relevant in order to understand why corrosion rates on Zr based alloys in KOH solutions (simulating VVER conditions) have been reported to be different from those measured in LiOH solutions of similar concentrations [31].…”

Section: Calculation Procedures and Parameter Estimatesmentioning

confidence: 99%

Kinetic parameters of the oxidation of zirconium alloys in simulated WWER water – Effect of KOH content

Bojinov

Cai

Kinnunen

et al. 2008

Journal of Nuclear Materials

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Section: Calculation Procedures and Parameter Estimatesmentioning

confidence: 99%

Kinetic parameters of the oxidation of zirconium alloys in simulated WWER water – Effect of KOH content

Bojinov

Cai

Kinnunen

et al. 2008

Journal of Nuclear Materials

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“…TEM analysis of the microstructure of oxide film can also be correlated to the corrosion resistance of the alloys [13][14][15]. Fig.…”

Section: Oxide Characteristicsmentioning

confidence: 99%

Effect of isothermal annealing on the corrosion behavior of Zr–xNb alloys

Kim

Jeong

Kim

2004

Journal of Nuclear Materials

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“…Chemically, alkali-metal elements should behave similarly, but mechanically they can be very different because of the increasing ionic radius going down along one column in the periodic table. Jeong et al conducted experiments of zirconium alloy corrosion in aqueous alkali hydroxide solutions (LiOH, NaOH, KOH, RbOH, and CsOH) [50]. They found that with relatively low concentration of the alkali element in solution (4.3 mM), the oxide film growth behaves similarly in all alkali hydroxide solutions with a modest acceleration effect arising from each.…”

Section: Comparing the Relative Importance Of The Chemical And Mecmentioning

confidence: 99%

Electro-chemo-mechanical effects of lithium incorporation in zirconium oxide

Yang¹,

Youssef²,

Yildiz³

2018

Phys. Rev. Materials

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Understanding the response of functional oxides to extrinsic ion insertion is important for technological applications including electrochemical energy storage and conversion, corrosion, and electronic materials in neuromorphic computing devices. Decoupling the complicated chemical and mechanical effects of ion insertion is difficult experimentally. In this work, we assessed the effect of lithium incorporation in zirconium oxide as a model system, by performing first-principles based calculations. The chemical effect of lithium is to change the equilibria of charged defects. Lithium exists in ZrO 2 as a positively charged interstitial defect, and raises the concentration of free electrons, negatively charged oxygen interstitials, and zirconium vacancies. As a result, oxygen diffusion becomes faster by five orders of magnitude, and the total electronic conduction increases by up to five orders of magnitude in the low oxygen partial pressure regime. In the context of Zr metal oxidation, this effect accelerates oxide growth kinetics. In the context of electronic materials, it has implications for resistance modulations via ion incorporation. The mechanical effect of lithium is in changing the volume and equilibrium phase of the oxide. Lithium interstitials together with zirconium vacancies shrink the volume of the oxide matrix, release the compressive stress that is needed for stabilizing the tetragonal phase ZrO 2 at low temperature, and promote tetragonal-to-monoclinic phase transformation. By identifying these factors, we are able to mechanistically interpret experimental results in the literature for zirconium alloy corrosion in different alkali-metal hydroxide solutions. These results provide a mechanistic and quantitative understanding of lithium-accelerated corrosion of zirconium alloy, as well as, and more broadly, show the importance of considering coupled electro-chemo-mechanical effects of cation insertion in functional oxides.

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Corrosion characteristics and oxide microstructures of Zircaloy-4 in aqueous alkali hydroxide solutions

Cited by 41 publications

References 5 publications

Kinetic parameters of the oxidation of zirconium alloys in simulated WWER water – Effect of KOH content

Kinetic parameters of the oxidation of zirconium alloys in simulated WWER water – Effect of KOH content

Effect of isothermal annealing on the corrosion behavior of Zr–xNb alloys

Electro-chemo-mechanical effects of lithium incorporation in zirconium oxide

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