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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1715| FLY ASH/RARE EARTH OXIDES NANOCOMPOSITES FOR THERMAL BARRIER COATINGS PRODUCED BY ELECTROPHORETIC DEPOSITION | |
| JEANETTE MARCELA TORRESCANO ALVAREZ JAIME ALVAREZ QUINTANA | |
| Acceso Abierto | |
| Sin Derechos Reservados | |
| EPD | |
| Fly ash is a ceramic waste material from coal fired power plants. A new alternative for its disposal is taking advantage of its good thermal properties and use it as the main raw material for the production of novel nanocomposites for thermal barrier coatings (TBCs) applications. The aim of this research was to produce a fly ash matrix TBC with low thermal conductivity and high thermal stability at high temperatures. Two rare earth oxides nanoparticles were chosen due to their low thermal conductivity, as reinforcements of a ceramic matrix nanocomposite. Electrophoretic deposition (EPD) technique was used for the preparation of these coatings due to its flexibility of use in different types of substrates and easy control of deposition thickness [1-3]. Different TBCs were obtained varying parameters such as time and DC voltage. Subsequently the coatings were submitted to different heat treatments in order to determine the most suitable sintering temperature. The sintered coatings were homogeneous and showed no crack formation. Morphological and microstructural characterization of TBCs produced with different EPD conditions and sintering temperatures have been performed. Additionally, thermal conductivity of the bulk samples was determined. These results confirm their potentiality as ultra-low thermal conductivity insulators for high temperature applications. | |
| 2013 | |
| Memoria de congreso | |
| Inglés | |
| OTRAS | |
| Versión revisada | |
| submittedVersion - Versión revisada | |
| Aparece en las colecciones: | Artículos de Congresos |
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|---|---|---|---|
| Artículo en extenso JMTA Cancún 2013.pdf | 3.59 MB | Adobe PDF | Visualizar/Abrir |