Effect of lithium hydroxide on stability of fuel cladding oxide film in simulated pressurized water reactor primary water environments

    Research output: Contribution to journalArticleScientificpeer-review

    3 Citations (Scopus)

    Abstract

    The trend in pressurized water reactors (PWR) toward higher burnups, increasing lithium concentrations, and higher coolant temperatures imposes a demand for better fuel cladding corrosion and hydriding properties. There is a lack of reliable and fast in-situ techniques to investigate zirconium alloys in high-temperature water environments. The contact electric resistance (CER) technique was used to measure the electric resistance of the oxide growing on a zirconium-based fuel cladding material. Lithium hydroxide (LiOH) decreased electric resistance of the oxide when LiOH was in excess of ∼ 70 ppm in PWR water at 300°C. Electric resistance of the oxide was dependent upon LiOH concentration and was shown to correlate inversely with the effect of LiOH on weight gain. Kinetics of the decrease of electric resistance indicated the mechanism of degradation was a phase transformation rather than a diffusion-limited process.
    Original languageEnglish
    Pages (from-to)724 - 729
    Number of pages6
    JournalCorrosion
    Volume53
    Issue number9
    DOIs
    Publication statusPublished - 1997
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Pressurized water reactors
    Oxides
    Oxide films
    Lithium
    Water
    Electric contacts
    Zirconium alloys
    Electric resistance
    Zirconium
    Coolants
    Phase transitions
    Corrosion
    Degradation
    Temperature
    Kinetics
    lithium hydroxide

    Cite this

    @article{23d203f26d8d49dfaa86805d1c9652e3,
    title = "Effect of lithium hydroxide on stability of fuel cladding oxide film in simulated pressurized water reactor primary water environments",
    abstract = "The trend in pressurized water reactors (PWR) toward higher burnups, increasing lithium concentrations, and higher coolant temperatures imposes a demand for better fuel cladding corrosion and hydriding properties. There is a lack of reliable and fast in-situ techniques to investigate zirconium alloys in high-temperature water environments. The contact electric resistance (CER) technique was used to measure the electric resistance of the oxide growing on a zirconium-based fuel cladding material. Lithium hydroxide (LiOH) decreased electric resistance of the oxide when LiOH was in excess of ∼ 70 ppm in PWR water at 300°C. Electric resistance of the oxide was dependent upon LiOH concentration and was shown to correlate inversely with the effect of LiOH on weight gain. Kinetics of the decrease of electric resistance indicated the mechanism of degradation was a phase transformation rather than a diffusion-limited process.",
    author = "Timo Saario and Seppo T{\"a}htinen and Jussi Piippo",
    year = "1997",
    doi = "10.5006/1.3290306",
    language = "English",
    volume = "53",
    pages = "724 -- 729",
    journal = "Corrosion",
    issn = "0010-9312",
    number = "9",

    }

    Effect of lithium hydroxide on stability of fuel cladding oxide film in simulated pressurized water reactor primary water environments. / Saario, Timo; Tähtinen, Seppo; Piippo, Jussi.

    In: Corrosion, Vol. 53, No. 9, 1997, p. 724 - 729.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Effect of lithium hydroxide on stability of fuel cladding oxide film in simulated pressurized water reactor primary water environments

    AU - Saario, Timo

    AU - Tähtinen, Seppo

    AU - Piippo, Jussi

    PY - 1997

    Y1 - 1997

    N2 - The trend in pressurized water reactors (PWR) toward higher burnups, increasing lithium concentrations, and higher coolant temperatures imposes a demand for better fuel cladding corrosion and hydriding properties. There is a lack of reliable and fast in-situ techniques to investigate zirconium alloys in high-temperature water environments. The contact electric resistance (CER) technique was used to measure the electric resistance of the oxide growing on a zirconium-based fuel cladding material. Lithium hydroxide (LiOH) decreased electric resistance of the oxide when LiOH was in excess of ∼ 70 ppm in PWR water at 300°C. Electric resistance of the oxide was dependent upon LiOH concentration and was shown to correlate inversely with the effect of LiOH on weight gain. Kinetics of the decrease of electric resistance indicated the mechanism of degradation was a phase transformation rather than a diffusion-limited process.

    AB - The trend in pressurized water reactors (PWR) toward higher burnups, increasing lithium concentrations, and higher coolant temperatures imposes a demand for better fuel cladding corrosion and hydriding properties. There is a lack of reliable and fast in-situ techniques to investigate zirconium alloys in high-temperature water environments. The contact electric resistance (CER) technique was used to measure the electric resistance of the oxide growing on a zirconium-based fuel cladding material. Lithium hydroxide (LiOH) decreased electric resistance of the oxide when LiOH was in excess of ∼ 70 ppm in PWR water at 300°C. Electric resistance of the oxide was dependent upon LiOH concentration and was shown to correlate inversely with the effect of LiOH on weight gain. Kinetics of the decrease of electric resistance indicated the mechanism of degradation was a phase transformation rather than a diffusion-limited process.

    U2 - 10.5006/1.3290306

    DO - 10.5006/1.3290306

    M3 - Article

    VL - 53

    SP - 724

    EP - 729

    JO - Corrosion

    JF - Corrosion

    SN - 0010-9312

    IS - 9

    ER -