Dynamics of the Chemically Driven Densification of Barium Titanate Using Molten Hydroxides
| Autor: | Kosuke Tsuji, Adri C. T. van Duin, Sun Hwi Bang, Arnaud Ndayishimiye, Dooman Akbarian, Mert Y. Sengul, Clive A. Randall, Zhongming Fan |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Mechanical Engineering Sintering Nanoparticle Bioengineering Crystal growth 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics chemistry.chemical_compound chemistry Chemical engineering Creep Barium titanate Hydroxide General Materials Science ReaxFF 0210 nano-technology Eutectic system |
| Zdroj: | Nano letters. 21(8) |
| ISSN: | 1530-6992 |
| Popis: | Molten hydroxides, often used for crystal growth and nanoparticle synthesis, have recently been applied for the single step densification of several inorganic materials under moderate uniaxial pressures and 1000 °C below their usual sintering temperatures. The latter approach, termed cold sintering process (CSP), is a mechanochemically driven process that enables the densification of inorganic materials through a dissolution-precipitation creep mechanism. In this study, we report the main densification mechanisms of BaTiO3 in a NaOH-KOH eutectic mixture. A chemical insight at the atomistic level, investigated by ReaxFF molecular dynamics simulations, offers plausible ionic complex formation scenarios and reactions at the BaTiO3/molten hydroxide interface, enabling the dissolution-precipitation reactions and the subsequent cold sintering of BaTiO3. |
| Databáze: | OpenAIRE |
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