English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/131517
Título

Technological properties of glass-ceramic tiles obtained using rice husk ash as silica precursor

AutorAndreola, F.; Martín, M. I.; Ferrari, A. M.; Lancellotti, I.; Bondioli, F.; Rincón, Jesús M.; Romero, Maximina; Barbieri, L.
Palabras claveSintering
Microstructure final
Mechanical properties
Traditional ceramics
Fecha de publicaciónjul-2013
EditorElsevier
CitaciónCeramics International 39: 5427–5435 (2013)
ResumenThis paper reports the results of a study focused on the obtainment of glass-ceramic by using rice husk ash (RHA) as silica precursor. RHA is a by-product generated in biomass plants using rice husk as fuel for kilns or in the rice mills to generate steam for the parboiling process. Worldwide, it is annually produced about 132 Mt of rice husk, which gives rise to a production of 33 Mt/year of RHA. Glass-ceramic tiles were produced by a sinter-crystallization process using a glassy frit formulated in the MgO–Al2O3-SiO2 composition system. The realized glass-ceramics were studied according to ISO rules for sintering and technological properties (water absorption, apparent density, bending strength, Young's modulus, deep abrasion, Mohs hardness). To complete the investigation crystalline phase formation and microstructural characterization of the glass-ceramic materials was carried out using X-ray diffraction (XRD) and scanning electron microscopy (SEM). Finally, chemical durability tests on parent glass and derived glass-ceramics were performed. The results obtained showed that it is possible to use RHA to produce glass-ceramic tiles by a sinter-crystallization process, obtaining nepheline (Na2O*Al2O3*SiO2) as main crystalline phase and forsterite (2MgO*SiO2) at 900 °C. Regarding technological features, the sintered materials showed bending strength values and Mohs hardness higher with respect to commercial glass-ceramics like NeopariesR. Other properties as water absorption (0.5%) allowed to classify these materials into the Group BIa characteristic of high sintered ceramic tiles according to European Standard rule
Versión del editorhttp//dx.doi.org/10.1016/j.ceramint.2012.12.050
URIhttp://hdl.handle.net/10261/131517
DOI10.1016/j.ceramint.2012.12.050
ISSN0272-8842
Aparece en las colecciones: (IETCC) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Ceramics International.pdfArtículo principal1,36 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.