High Temperature Nanocomposite Through Engineered Synthesis of Hafnia Nano-Dispersoids in Hexagonal Mesoporous Silica |
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Authors: | Sergio M Loureiro Michael L Ramos Mohan Manoharan |
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Affiliation: | General Electric Global Research, 1 Research Circle, Niskayuna, New York 12309 |
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Abstract: | In this communication, we show a solution-based synthetic route that yields a dual-phase SiO2-based ceramic–ceramic composite capable of retaining nano-structural features up to very high temperatures. The nanocomposite was produced by self-assembly of mesoporous silica using a non-ionic surfactant, and subsequent infiltration of the mesoporosity with a solution containing a high-temperature metal-oxide-based composition (HfO2). The nanocomposite was consolidated and processed up to 1500°C. |
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