Mullite (3Al<SUB>2</SUB>O<SUB>3</SUB>·2SiO<SUB>2</SUB>) ceramics obtained by reaction sintering of rice husk ash and alumina, phase evolution, sintering and microstructure

The use of industrial waste (by-products) as raw materials in the ceramic industry has been under study for decades due to the economical, energy, tax and environmental advantages. The specificity of the waste requires a basic characterization and technology thereof.The applicability of rice husk as...

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Autores principales: Serra, María Florencia, Conconi, María Susana, Gauna, M. A., Suárez, Gustavo, Aglietti, Esteban Fausto, Rendtorff Birrer, Nicolás Maximiliano
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Ciencias Exactas
Mullite
Mullite processing
Nontraditional raw materials
Porous ceramics
Properties
Refractory materials
Rice husk
Rice husk ash
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/87068
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-87068
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Mullite
Mullite processing
Nontraditional raw materials
Porous ceramics
Properties
Refractory materials
Rice husk
Rice husk ash
spellingShingle Ciencias Exactas
Mullite
Mullite processing
Nontraditional raw materials
Porous ceramics
Properties
Refractory materials
Rice husk
Rice husk ash
Serra, María Florencia
Conconi, María Susana
Gauna, M. A.
Suárez, Gustavo
Aglietti, Esteban Fausto
Rendtorff Birrer, Nicolás Maximiliano
Mullite (3Al<SUB>2</SUB>O<SUB>3</SUB>·2SiO<SUB>2</SUB>) ceramics obtained by reaction sintering of rice husk ash and alumina, phase evolution, sintering and microstructure
topic_facet Ciencias Exactas
Mullite
Mullite processing
Nontraditional raw materials
Porous ceramics
Properties
Refractory materials
Rice husk
Rice husk ash
description The use of industrial waste (by-products) as raw materials in the ceramic industry has been under study for decades due to the economical, energy, tax and environmental advantages. The specificity of the waste requires a basic characterization and technology thereof.The applicability of rice husk ash (RHA), as silica (SiO <SUB>2</SUB>) source, in refractory and porous materials with potential structural, insulating and/or filtering applications was carried out by characterizing the ceramic behavior of stoichiometric mixtures of calcined alumina (Al<SUB>2</SUB>O<SUB>3</SUB>) and RHA. A reaction-sintering framework can be defined in the (3Al<SUB>2</SUB>O<SUB>3</SUB>·2SiO<SUB>2</SUB>) system. The sinterability and conversion during the reaction sintering processes were studied in order to obtain mullite (3Al<SUB>2</SUB>O<SUB>3</SUB>·2SiO<SUB>2</SUB>) ceramics. Also some microstructural features of the developed materials were studied in the 1100-1600 °C range. The mullitization was studied quantitatively.Partial densification was achieved (30%) and highly converted materials were obtained. The developed microstructure consisted in a dense ceramic matrix with homogenous interconnected porosity, with a narrow pore size distribution below 20 μm. The developed material gives enough information for designing mullite ceramics materials with either porous or dense microstructures with structural, insulating or filtering applications employing RHA as silica source and calcined alumina as the only other raw material.
format Articulo
Articulo
author Serra, María Florencia
Conconi, María Susana
Gauna, M. A.
Suárez, Gustavo
Aglietti, Esteban Fausto
Rendtorff Birrer, Nicolás Maximiliano
author_facet Serra, María Florencia
Conconi, María Susana
Gauna, M. A.
Suárez, Gustavo
Aglietti, Esteban Fausto
Rendtorff Birrer, Nicolás Maximiliano
author_sort Serra, María Florencia
title Mullite (3Al<SUB>2</SUB>O<SUB>3</SUB>·2SiO<SUB>2</SUB>) ceramics obtained by reaction sintering of rice husk ash and alumina, phase evolution, sintering and microstructure
title_short Mullite (3Al<SUB>2</SUB>O<SUB>3</SUB>·2SiO<SUB>2</SUB>) ceramics obtained by reaction sintering of rice husk ash and alumina, phase evolution, sintering and microstructure
title_full Mullite (3Al<SUB>2</SUB>O<SUB>3</SUB>·2SiO<SUB>2</SUB>) ceramics obtained by reaction sintering of rice husk ash and alumina, phase evolution, sintering and microstructure
title_fullStr Mullite (3Al<SUB>2</SUB>O<SUB>3</SUB>·2SiO<SUB>2</SUB>) ceramics obtained by reaction sintering of rice husk ash and alumina, phase evolution, sintering and microstructure
title_full_unstemmed Mullite (3Al<SUB>2</SUB>O<SUB>3</SUB>·2SiO<SUB>2</SUB>) ceramics obtained by reaction sintering of rice husk ash and alumina, phase evolution, sintering and microstructure
title_sort mullite (3al<sub>2</sub>o<sub>3</sub>·2sio<sub>2</sub>) ceramics obtained by reaction sintering of rice husk ash and alumina, phase evolution, sintering and microstructure
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/87068
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