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Interaction of metallic zirconium and its alloys Zry-2 and E110 with molten eutectic salt of LiF—NaF—KF containing zirconium fluoride components

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Abstract

The interactions of selected zirconium alloys used as special construction materials (Zr-pure, Zry-2, E-110) with the molten system of (LiF—NaF—KF)(eut.) with additions of K2ZrF6 or Na7Zr6F31 were studied. Corrosion losses of pure zirconium decrease sharply with 5 mole% addition of K2ZrF6 to (LiF—NaF—KF)(eut.). The presence of alloying additives (Sn, Nb) has a positive influence on corrosion resistance in the eutectic mixture — up to 60% increase in corrosion resistance in comparison with pure zirconium. The mass losses of pure zirconium indicate an increasing corrosion attack with increasing Na7Zr6F31 content in (LiF—NaF—KF)(eut.) mixtures.

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Authors and Affiliations

  1. Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 36, Bratislava, Slovakia

    Viliam Pavlík, Peter Barborík, Miroslav Boča & Zuzana Vasková

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  1. Viliam Pavlík
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  2. Peter Barborík
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  3. Miroslav Boča
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  4. Zuzana Vasková
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Correspondence to Viliam Pavlík.

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Pavlík, V., Barborík, P., Boča, M. et al. Interaction of metallic zirconium and its alloys Zry-2 and E110 with molten eutectic salt of LiF—NaF—KF containing zirconium fluoride components. Chem. Pap. 70, 197–205 (2016). https://doi.org/10.1515/chempap-2015-0202

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