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  • Corrosion Resistance of Alloys in Direct-Fired Supercritical CO₂ Power Cycle Aqueous Environments

    Creator:
    Repukaiti, Reyixiati
    Abstract:
    Using supercritical CO₂ (sCO₂) as a working fluid has increasingly gained attention in the energy industry. sCO₂ power cycles has various advantages, such as high cycle efficiency, compact turbomachinery, and potential zero CO₂ emission. Along with these benefits, materials degradation issues have also been emphasized in the last decade. Aqueous...
    Resource Type:
    Dissertation
    Full Text:
    ACKNOWLEDGEMENTS First and foremost, I’d like to sincerely thank my advisor, Dr. Julie Tucker, for taking a

  • Investigation of Thermal Degradation in Structural Alloys for Nuclear Power Systems

    Creator:
    Teng, Fei
    Abstract:
    The thermal degradation of structural materials is considered to be a key factor for evaluating the lifetime of current nuclear power plants. Ni-based and Fe-based alloys, such as 690, 625, 304, and 316, are widely used in nuclear industry as structural components due to the extraordinary corrosion resistance and mechanical...
    Resource Type:
    Dissertation
    Full Text:
    approved: ______________________________________________________ Julie D. Tucker The thermal

  • The Effect of Isothermal Aging on the Development of Long-Range Order in Ni-based Alloys

    Creator:
    Aerne, Nicholas S. J.
    Abstract:
    Nickel (Ni)-based alloys with a high chromium (Cr) content are frequently employed in applications where elevated temperatures and/or corrosive environments are present due to their excellent corrosion resistance and mechanical properties. However, a gap exists around the formation, and kinetics of long-range order (LRO) Ni2Cr phase in both model binary...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ Julie D Tucker Nickel (Ni)-based alloys with a high chromium (Cr) content are frequently

  • Aqueous Corrosion and High Temperature Oxidation in Supercritical Carbon Dioxide Environments

    Creator:
    Teeter, Lucas
    Abstract:
    The corrosion resistance of steels and nickel based alloys was investigated in supercritical CO2 (sCO2). Two types of experiments were conducted. The first set of experiments were conducted in a low temperature aqueous environment to simulate conditions that would exist in direct sCO2 power cycle low temperature heat exchangers. The...
    Resource Type:
    Dissertation
    Full Text:
    : Julie D. Tucker The corrosion resistance of steels and nickel based alloys was investigated in su

  • Characterization and Development of Ni-based Superalloys for Supercritical Carbon Dioxide Applications

    Creator:
    Adam, Benjamin M.
    Abstract:
    The advent of supercritical CO2 as a new heat-exchange medium has seen strong interest from the power industry and the energy research field recently. It is advan- tageous in comparison with other heat-exchange cycles, as it can be operated safely at much higher temperatures and pressures, thus increasing the thermal...
    Resource Type:
    Dissertation
    Full Text:
    approved: Julie D. Tucker The advent of supercritical CO2 as a new heat-exchange medium has seen strong

  • Adaptive Learning Module for Introduction to Materials Science

    Creator:
    Nigon, Nutnicha
    Abstract:
    There is a growing need for individualized instructional designs in 4-year institutions due to: 1) growing undergraduate enrollment trends across the U.S., 2) broader diversity in students backgrounds, and 3) the growing prevalence of asynchronous remote learning. With the growth in computer technology in education, tools such as adaptive intelligent...
    Resource Type:
    Dissertation
    Full Text:
    : ____________________________________________________________ Julie D. Tucker Milo D. Koretsky There is a growing need for individualized instructional