Compatibility of niobium, vanadium and P22 steel in high temperature flowing LiPb

Venturini, Alessandro; Bassini, Serena; Ciantelli, Chiara; Fiore, Angela; Martelli, Daniele; Papa, Francesca; Utili, Marco

doi:10.1016/j.jnucmat.2022.153985

Cited by 5 publications

(1 citation statement)

References 31 publications

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“…However, also characterizing the niobium compatibility with flowing LiPb was deemed fundamental before starting the manufacturing of the PAV mock-up, and from a wider perspective, to allow the use of this material in LiPb systems. For this reason, an experimental campaign was conducted in the IELLLO facility [17]. IELLLO uses eutectic LiPb as the working fluid (15.7% at.…”

Section: Niobium Compatibility With Lipbmentioning

confidence: 99%

Manufacturing of PAV-ONE, a Permeator against Vacuum Mock-Up with Niobium Membrane

Papa,

Venturini,

Caruso

et al. 2023

Energies

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The Permeator Against Vacuum (PAV) is one of the proposed technologies for the Tritium Extraction System of the WCLL BB (Water-Cooled Lithium-Lead Breeding Blanket) of the EU DEMO reactor. In this paper, the manufacturing of the first PAV mock-up with a niobium membrane with a cylindrical configuration is presented. This work aimed to demonstrate the possibility of manufacturing a relevant-size PAV to be later tested in the TRIEX-II facility. The adopted prototypical solutions are described in detail, starting with the methodology developed to join the Nb tubes with a 10CrMo9-10 (A182 F22) plate. Dedicated manufacturing and welding procedures, based on vacuum brazing with a nickel-based brazing alloy, were developed to solve the problem. This new kind of brazing was first analyzed to check the morphology of the joint and then tested to check its capability to withstand the TRIEX-II operative conditions. In parallel, the compatibility with a lithium-lead environment was analyzed by exposing samples of niobium and 10CrMo9-10 (A335 P22) to a flow of the eutectic alloy at 500 °C up to 4000 h. Finally, the PAV mock-up was installed in the TRIEX-II facility.

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Section: Niobium Compatibility With Lipbmentioning

confidence: 99%