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Materials Science and Engineering Commons™
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Missouri University of Science and Technology
<p>Ceramic materials -- Mechanical properties<br />Ceramics -- Thermal properties<br />Zirconium -- Thermal properties<br />Borides -- Thermal properties<br />Oxidation<br />Transition metals</p>
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Full-Text Articles in Materials Science and Engineering
Improving The Oxidation Resistance Of Diboride-Based Ceramics, Maryam Kazemzadeh Dehdashti
Improving The Oxidation Resistance Of Diboride-Based Ceramics, Maryam Kazemzadeh Dehdashti
Doctoral Dissertations
"Oxidation behavior has restricted the development of ZrB₂-based ceramics for aerospace and hypersonic flight vehicles applications. The research presented in this dissertation focuses on the effect of transition metal (TM) additives on oxidation behavior of ZrB₂ ceramics. In the first stage of the research, the effect of Nb additions on the morphology of the oxide particles and stability of the protective B₂O₃ glassy layer, which formed on the top surface during oxidation, was investigated. Addition of Nb increased the thickness of the glassy layer and, as a result, improved the oxidation resistance of ZrB₂ after oxidation at 1500⁰C. Next, the …