IDEAS home Printed from https://ideas.repec.org/a/wsi/srlxxx/v24y2017i05ns0218625x17500718.html
   My bibliography  Save this article

Extreme Pressure Synergistic Mechanism Of Bismuth Naphthenate And Sulfurized Isobutene Additives

Author

Listed:
  • XIN XU

    (Department of Aviation Oil and Material, Air Force Logistics College, Xuzhou 221000, China)

  • JIANQIANG HU

    (Department of Aviation Oil and Material, Air Force Logistics College, Xuzhou 221000, China)

  • SHIZHAO YANG

    (Department of Aviation Oil and Material, Air Force Logistics College, Xuzhou 221000, China)

  • FENG XIE

    (Department of Aviation Oil and Material, Air Force Logistics College, Xuzhou 221000, China)

  • LI GUO

    (Department of Aviation Oil and Material, Air Force Logistics College, Xuzhou 221000, China)

Abstract

A four-ball tester was used to evaluate the tribological performances of bismuth naphthenate (BiNap), sulfurized isobutene (VSB), and their combinations. The results show that the antiwear properties of BiNap and VSB are not very visible, but they possess good extreme pressure (EP) properties, particularly sulfur containing bismuth additives. Synergistic EP properties of BiNap with various sulfur-containing additives were investigated. The results indicate that BiNap exhibits good EP synergism with sulfur-containing additives. The surface analytical tools, such as X-ray photoelectron spectrometer (XPS) scanning electron microscope (SEM) and energy dispersive X-ray (EDX), were used to investigate the topography, composition contents, and depth profile of some typical elements on the rubbing surface. Smooth topography of wear scar further confirms that the additive showed good EP capacities, and XPS and EDX analyzes indicate that tribochemical mixed protective films composed of bismuth, bismuth oxides, sulfides, and sulfates are formed on the rubbing surface, which improves the tribological properties of lubricants. In particular, a large number of bismuth atoms and bismuth sulfides play an important role in improving the EP properties of oils.

Suggested Citation

  • Xin Xu & Jianqiang Hu & Shizhao Yang & Feng Xie & Li Guo, 2017. "Extreme Pressure Synergistic Mechanism Of Bismuth Naphthenate And Sulfurized Isobutene Additives," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 24(05), pages 1-12, July.
    • Handle: RePEc:wsi:srlxxx:v:24:y:2017:i:05:n:s0218625x17500718
    DOI: 10.1142/S0218625X17500718
    as

    Download full text from publisher

    File URL: http://www.worldscientific.com/doi/abs/10.1142/S0218625X17500718
    Download Restriction: Access to full text is restricted to subscribers
    File URL: https://libkey.io/10.1142/S0218625X17500718?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to

    for a different version of it.

    More about this item

    Keywords

    ;
    ;
    ;
    ;
    ;
    ;

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:wsi:srlxxx:v:24:y:2017:i:05:n:s0218625x17500718. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Tai Tone Lim (email available below). General contact details of provider: http://www.worldscinet.com/srl/srl.shtml .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.