Abstract Atomic oxygen (AO) exposure testing has been conducted on a 321 stainless steel rolled 1 mm thick sheet to simulate the effect of AO environment on steel in low Earth orbit (LEO). An atomic oxygen exposure facility was employed to carry out AO experiments with the fluence up to ~1021 atom/cm2. The AO exposed specimens were evaluated in air at room temperature using a nanoindenter and a tribological system. The exposed surfaces were analyzed usign XPS technique. The experimental and correlated analytical results indicated that long term exposure to atomic oxygen results in formation of a metallic oxide in the surface layer of the stainless steel that leads to surface hardening. With increasing AO fluence, the surface microhardness is increased. The friction behavior during starting period is influenced by AO exposure. The maximum friction coefficient of run-in stage is decreased after AO exposure.


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    Titel :

    Influence of Atomic Oxygen Exposure on Friction Behavior of 321 Stainless Steel


    Beteiligte:
    Liu, Y. (Autor:in) / Yang, J. (Autor:in) / Ye, Z. (Autor:in) / Dong, S. (Autor:in) / Zhang, L. (Autor:in) / Zhang, Z. (Autor:in)


    Ausgabe :

    2013


    Erscheinungsdatum :

    2012-06-04


    Format / Umfang :

    9 pages





    Medientyp :

    Aufsatz/Kapitel (Buch)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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