The friction and wear properties in vacuum for the γ‐ray irradiated PTFE coatings were measured. The effects of radiation dose, sliding velocity and load on the friction coefficient and wear loss of PTFE coatings were studied. The worn surfaces were analyzed using scanning electron microscopy (SEM). The results show that the friction coefficient decreased after γ‐ray irradiation and varied little with the irradiation dose. The friction coefficient firstly increased and then decreased with increasing sliding velocity, while it firstly decreased and then increased with increasing load. The wear loss rises after γ‐ray irradiation and decreases with increasing the irradiation dose if the irradiation dose is less than 10 7 rad . When the irradiation dose reaches 10 7 rad , the wear loss is lower than that of pristine, not irradiated coating. The wear loss is firstly decreased and then slightly increased with increasing velocity and load under the irradiation dose of 10 7 rad . It is shown by SEM that there are cracks on the worn surface.


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    Title :

    Study on Friction and Wear Properties in Vacuum for γ‐Ray Irradiated PTFE Coatings


    Contributors:
    Liu, Yong (author) / Luo, Chongtai (author) / Ye, Zhuyu (author) / Yuan, Xingdong (author) / Yang, Dezhuang (author) / Kleiman, Jacob I. (editor)

    Conference:

    PROTECTION OF MATERIALS AND STRUCTURES FROM SPACE ENVIRONMENT: Proceedings of the 9th International Conference: Protection of Materials and Structures From Space Environment ; 2008 ; Toronto (Canada)


    Published in:

    AIP Conference Proceedings ; 1087 , 1 ; 519-525


    Publication date :

    2009-01-05


    Size :

    7 pages





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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