This paper reports the results of incorporating silver nanoparticles in DLC films to improve the solid lubricant's lifetime when atomic oxygen bombardment is present in high vacuum environments as are encountered in space. For this, etching experiments were performed in oxygen plasma operated at low pressure. DLC films were deposited on different metallic substrates and on silicon (100) with thin amorphous silicon interlayer by using a Pulsed DC-PECVD discharge. The main goals were to obtain a low etching rate in an atomic oxygen atmosphere, a low friction coefficient, a low total stress, a high degree of hardness, and very high adherence to the substrate in depositions. During etching experiments, the films were submitted to oxygen ions with energy of propor to 84 eV in order to evaluate the process of wear of the surface in a short period (4 min). The mass spectrometry analysis shows a reduction of the volatile product species (C(+), CO(+) and CO2(+)) in the etching environment for samples with more silver nanoparticles. The results were in agreement with profilometry measurements. The results confirm DLC films are more wear resistant against oxygen attack when silver nanoparticles are incorporated. Also, a consistent method for obtaining nanoparticle size and density control will be discussed.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    The improvement of DLC film lifetime using silver nanoparticles for use on space devices


    Additional title:

    Verbesserung der DLC-Beschichtungsstandzeit durch Silber-Nanopartikel für den Einsatz in Raumfahrtbauelementen


    Contributors:

    Published in:

    Diamond and Related Materials ; 17 , 7-10 ; 1674-1679


    Publication date :

    2008


    Size :

    6 Seiten, 10 Bilder, 31 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English






    Dy3+ doped tellurite glasses containing silver nanoparticles for lighting devices

    Hua, Chenxiao / Shen, Lifan / Pun, Edwin Yue Bun et al. | British Library Online Contents | 2018


    Lifetime of Electro-Optic Polymeric Devices

    IEEE; Lasers and Electro-Optics Society | British Library Conference Proceedings | 1998