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  • Corrosion Resistance of Alloys in Seawater and Supercritical Carbon Dioxide Environments

    Creator:
    Repukaiti, Reyixiati
    Abstract:
    The corrosion resistances of several alloys were investigated to optimize performance and cost in seawater and supercritical CO2 environments. Many alloys are prone to corrosion in seawater and/or supercritical CO2 containing impurity environments. Exposure and electrochemical experiments were conducted in both environments to evaluate alloys’ corrosion resistance. In seawater corrosion...
    Resource Type:
    Masters Thesis
    Full Text:
    graduate school. I would also like to thank Dr. Burkan Isgor, Dr. Ömer Doğan, and Dr. Margaret Ziomek

  • Corrosion of Carbon and Stainless Steels in H₂O-sCO₂ Environments for Power Cycle Applications

    Creator:
    Teeter, Lucas
    Abstract:
    The corrosion behaviors of carbon and stainless steels were investigated in supercritical CO₂ (sCO₂ ) containing H₂O and O₂ simulating conditions that exist in direct sCO₂ power cycle heat exchangers. Thermodynamic properties of CO₂-H₂O-O₂ systems related to the corrosion phenomena were determined using NIST software. The exposure tests of the...
    Resource Type:
    Masters Thesis
    Full Text:
    to his advisors Prof. Julie Tucker, Dr. Margaret Ziomeck-Moroz, and Dr. Ömer Doğan for their

  • Processing effects on the ductility of chromium-vanadium alloys

    Creator:
    Murdock, Hailey M.
    Abstract:
    The next generation of high temperature structural alloys must exhibit exceptional resistance to fracture, creep, oxidation, and fatigue at high temperatures. Chromium is being considered due to its high melting point (>1800°C), relatively low density (~7.2 g/cc), high temperature strength, and oxidation resistance. Limiting the use of chromium is its...
    Resource Type:
    Masters Thesis
    Full Text:
    : Dr. Jay Kruzic and Dr. Omer Dogan for their encouragement and guidance during this process enabled

  • 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:
    thankful for having the chance to work for her. I also want to thank Dr. Omer Dogan and Dr. Margaret

  • 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 Tucker, Dr. Margaret Ziomeck-Moroz, and Dr. Ömer Doğan for their guidance and support in this

  • Foam-Core Meniscus Coating and Diffusion Bonding for Energy Applications

    Creator:
    Saranam, Venkata Rajesh
    Abstract:
    In the second chapter, a foam-core meniscus coating process was developed for retrofitting 100 nm-scale sol-gel anti-reflective coatings onto in-field solar panels through the deposition, evaporation, and curing of wet films.Advantages of this technique include the means to control fluid flow relative to substrate motion and the ability to conform...
    Resource Type:
    Dissertation
    Full Text:
    Chang, Prof Ali Tabei, Prof Zhaoyan Fan, Prof Woodam Chung and Dr. Omer Dogan from NETL. I would also