• Login
    View Item 
    •   Home
    • University of Alaska Fairbanks
    • UAF Graduate School
    • Engineering
    • View Item
    •   Home
    • University of Alaska Fairbanks
    • UAF Graduate School
    • Engineering
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of Scholarworks@UACommunitiesPublication DateAuthorsTitlesSubjectsTypeThis CollectionPublication DateAuthorsTitlesSubjectsType

    My Account

    Login

    First Time Submitters, Register Here

    Register

    Statistics

    Display statistics

    Synthesis and characterization of mechanical properties of a novel bioceramic composite material for biological applications

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    Ladegard_Jillian_8-2010.pdf
    Size:
    43.84Mb
    Format:
    PDF
    Download
    Author
    Ladegard, Jillian
    Chair
    Zhang, Jing
    Committee
    Severin, Kenneth P.
    Chen, Cheng-fu
    Metadata
    Show full item record
    URI
    http://hdl.handle.net/11122/4835
    Abstract
    Bioceramics are used in a wide range of human skeletal repair and restoration applications as a synthetic bone substitute. 45S5 Bioglass, a bioactive ceramic, exhibits poor mechanical properties limiting the potential of the material and preventing its use in major load bearing applications. This investigation evaluated the synthesis and mechanical properties of a 45S5 Bioglass composite reinforced with different weight percentages of multi-wall carbon nanotubes. The material was analyzed using an X-Ray Diffractometer and a scanning electron microscope to determine the crystal structure, microstructural homogeneity, and surface texture of the composite material. The material was evaluated during the synthesis process to observe the evolution of the composite. Samples were sintered at 1000°C and 850°C to determine the effect of the sintering temperature on the mechanical properties of the composite. Once synthesized, the material was tested using the Vickers hardness indentation test to determine the mechanical properties of the ceramic, as defined by hardness and fracture toughness values. Hardness of the composite decreased with increasing nanotube concentration for all samples. A maximum fracture toughness value of 47.6 GPa·m¹/² corresponded to the addition of 1 weight percent multi-wall carbon nanotubes in the composite samples sintered at 1000°C. All of the composite samples sintered at 850°C reported lower fracture toughness values than the pure bioglass samples indicating that sintering temperature affects bonding between the composite components. These results prove that a Bioglass-multi-wall carbon nanotube composite has the potential for use as a synthetic material to restore function in load bearing bones
    Description
    Thesis (M.S.) University of Alaska Fairbanks, 2010
    Date
    2010-08
    Type
    Thesis
    Collections
    Engineering

    entitlement

     
    ABOUT US|HELP|BROWSE|ADVANCED SEARCH

    The University of Alaska Fairbanks is an affirmative action/equal opportunity employer and educational institution and is a part of the University of Alaska system.

    ©UAF 2013 - 2023 | Questions? ua-scholarworks@alaska.edu | Last modified: September 25, 2019

    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.