Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    AFM studies on the thickness and mechanical properties surfactant corrosion inhibitor films

    Access Status
    Fulltext not available
    Authors
    Yao, X.
    Pailleret, A.
    Kinsella, Brian
    Nesic, S.
    Date
    2011
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Yao, X. and Pailleret, A. and Kinsella, B. and Nesic, S. 2011. AFM studies on the thickness and mechanical properties surfactant corrosion inhibitor films, pp. 1320-1339.
    Source Title
    European Corrosion Congress 2011, EUROCORR 2011
    ISBN
    9781618394125
    School
    School of Chemical and Petroleum Engineering
    URI
    http://hdl.handle.net/20.500.11937/55519
    Collection
    • Curtin Research Publications
    Abstract

    An atomic force microscopy (AFM) study is presented to investigate the adsorption on mica and gold of a corrosion inhibitor tall oil fatty acid (TOFA) imidazolium chloride in aqueous solution. The formation of a continuous flat layer was observed at half and twice the critical micelle concentration (CMC). The thickness of the corrosion inhibitor films were accurately measured by the height variation between the inhibitor surface and the bare surface where the inhibitor molecules were scratched away using the AFM tip. At half CMC, the film thickness was approximately equal to the length of the surfactant inhibitor molecule, while at twice CMC, the film thickness was twice the molecular length. The latter is consistent with a bi-molecular layer. The mechanical properties of the inhibitor films were studied by quantitatively measuring the force to penetrate the film in the vertical direction and the force to remove inhibitor molecules in the lateral direction. The interfacial inhibitor film significantly changed the surface properties, providing a protective, mechanical barrier, in both vertical (normal) and lateral directions. Calculations based on the radius of the AFM tip showed that 2 and 4 nm thick inhibitor films can provide mechanical resistances of the order of 1 to 10 MPa. The vertical force to penetrate inhibitor films increased with film thickness. The lateral force to remove inhibitor molecules from the surface was over one order of magnitude higher than the normal forces and appeared to be independent of film thickness. As well as the mechanical properties, the kinetics of inhibitor re-adsorption can be measured after scratching inhibitor molecules from the surface.

    Related items

    Showing items related by title, author, creator and subject.

    • The mechanical properties of surfactant corrosion inhibitor films by AFM measurements
      Xiong, Y.; Pailleret, A.; Kinsella, Brian; Nesic, S. (2011)
      Surfactant molecules are commonly used to prevent corrosion of steel by acid producing gases such as CO 2 and H 2 S. The mechanical properties of corrosion inhibitor films formed by tall oil fatty acid (TOFA) imidazolium ...
    • Atomic force microscopy study of the adsorption of surfactant corrosion inhibitor films
      Xiong, Y.; Brown, B.; Kinsella, Brian; Nešic, S.; Pailleret, A. (2014)
      The properties of an adsorbed corrosion inhibitor-tall oil fatty acid (TOFA) imidazolium chloride-on mica, gold, and X65 steel were studied using in situ atomic force microscopy (AFM). Topography images and thickness ...
    • AFM studies of the adhesion properties of surfactant corrosion inhibitor films
      Xiong, Y.; Brown, B.; Kinsella, Brian; Nesic, S.; Pailleret, A. (2013)
      The properties of an adsorbed corrosion inhibitor - Tall Oil Fatty Acid (TOFA) imidazolium chloride, on mica, gold and X65 steel were studied using in-situ atomic force microscopy (AFM). Topography images and thickness ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.