STP1354: Understanding Hydrogen in Zirconium

    Sawatzky, A
    Pinawa, Manitoba

    Ells, CE
    Deep River, Ontario

    Pages: 17    Published: Jan 2000


    Abstract

    Selected examples of the Canadian contribution to the development of understanding of the behavior of hydrogen in zirconium alloys are reviewed. To solve the technical problems faced by the nuclear industry, it was necessary to have values for the solubility and diffusivity of hydrogen in the alloys, the diffusivity needed for the three gradients of concentration, temperature, and stress. With these quantities known, sensible models for the accumulation of hydrogen at points in the reactor components and the morphology of the resultant hydride phase were developed.

    Keywords:

    zirconium, hydrogen, zirconium hydride, Zr-2.5Nb, Zircaloy, diffusion, delayed hydride cracking


    Paper ID: STP14293S

    Committee/Subcommittee: B10.02

    DOI: 10.1520/STP14293S


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