STP543

    Electrochemical Techniques

    Published: Jan 1974


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    Abstract

    An electrochemical test method is proposed for determination of the susceptibility of materials to internal hydrogen embrittlement (IHE). The method is based on the assumption that the relative susceptibility of a material depends both on the specific aqueous environment to which the material is exposed and to the dissimilar materials to which it is coupled. Potentiostatic techniques are employed to impress potential on sustained loaded notched round-bar specimens. The result is a plot of impressed potential versus time to failure; superpositioning of the resultant curves provides a basis for rating the relative susceptibility of various materials to IHE.

    Keywords:

    hydrogen embrittlement, potentiostatic polarization, galvanostatic polarization, galvanic couplings, high strength steels, stress corrosion tests


    Author Information:

    Dull, DL
    Member of technical staff and section manager, The Aerospace Corp., El Segundo, Calif.

    Raymond, L
    Member of technical staff and section manager, The Aerospace Corp., El Segundo, Calif.


    Paper ID: STP38926S

    Committee/Subcommittee: F07.04

    DOI: 10.1520/STP38926S


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