• Login
    View Item 
    •   SMARTech Home
    • College of Engineering (CoE)
    • School of Materials Science and Engineering (MSE)
    • Center for Nanoscience and Nanotechnology
    • Center for Nanoscience and Nanotechnology Publications
    • View Item
    •   SMARTech Home
    • College of Engineering (CoE)
    • School of Materials Science and Engineering (MSE)
    • Center for Nanoscience and Nanotechnology
    • Center for Nanoscience and Nanotechnology Publications
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Microstructural effects on surface mechanical properties of ion-implanted polymers

    Thumbnail
    View/Open
    1993_20_MRS.pdf (1.562Mb)
    Date
    1993-04
    Author
    Rao, G. R.
    Wang, Z. L. (Zhong Lin)
    Lee, E. H.
    Metadata
    Show full item record
    Abstract
    Tefzel, a copolymer of tetrafluoroethylene and ethylene, was implanted simultaneously with 400 keV boron, 700 keV nitrogen, and 600 keV carbon to a dose of 3 X 10¹⁵ ions/cm² for each ion. The implanted layer was examined using transmission electron microscope and compared with the pristine Tefzel for microstructural changes. The microhardness of the implanted and pristine Tefzel was determined using a nanoindentation technique. TEM bright-field images of the implanted layer show a patch-type contrast with distinguishable bright and dark regions. Electron energy loss spectroscopy (EELS) was used to show that the bright regions had a higher carbon concentration, as compared with the dark regions. The carbon-rich regions had an average size of approximately 40 nm. The pristine material showed a fairly featureless contrast with occasional local patchy regions. These were determined to be due to local thickness variations. The triple implantation improved the hardness of pristine Tefzel by over 66 times. The structure of the carbon-rich regions appears to be clusters of sp² bonded C atoms with sp³ sites present and hydrogen preferentially bonded in the sp³ C configuration. It was speculated that the carbon-rich regions could be harder than the surrounding regions, but this could not be resolved due to the small size of the regions.
    URI
    http://hdl.handle.net/1853/27455
    Collections
    • Center for Nanoscience and Nanotechnology Publications [105]

    Browse

    All of SMARTechCommunities & CollectionsDatesAuthorsTitlesSubjectsTypesThis CollectionDatesAuthorsTitlesSubjectsTypes

    My SMARTech

    Login

    Statistics

    View Usage StatisticsView Google Analytics Statistics
    facebook instagram twitter youtube
    • My Account
    • Contact us
    • Directory
    • Campus Map
    • Support/Give
    • Library Accessibility
      • About SMARTech
      • SMARTech Terms of Use
    Georgia Tech Library266 4th Street NW, Atlanta, GA 30332
    404.894.4500
    • Emergency Information
    • Legal and Privacy Information
    • Human Trafficking Notice
    • Accessibility
    • Accountability
    • Accreditation
    • Employment
    © 2020 Georgia Institute of Technology