Cargando…

Liquid Foam Templates Associated with the Sol-Gel Process for Production of Zirconia Ceramic Foams

The unique properties of ceramic foams enable their use in a variety of applications. This work investigated the effects of different parameters on the production of zirconia ceramic foam using the sol-gel process associated with liquid foam templates. Evaluation was made of the influence of the the...

Descripción completa

Detalles Bibliográficos
Autores principales: Beozzo, Cristiane Carolina, Alves-Rosa, Marinalva Aparecida, Pulcinelli, Sandra Helena, Santilli, Celso Valentim
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5452520/
https://www.ncbi.nlm.nih.gov/pubmed/28809254
http://dx.doi.org/10.3390/ma6051967
_version_ 1783240448058327040
author Beozzo, Cristiane Carolina
Alves-Rosa, Marinalva Aparecida
Pulcinelli, Sandra Helena
Santilli, Celso Valentim
author_facet Beozzo, Cristiane Carolina
Alves-Rosa, Marinalva Aparecida
Pulcinelli, Sandra Helena
Santilli, Celso Valentim
author_sort Beozzo, Cristiane Carolina
collection PubMed
description The unique properties of ceramic foams enable their use in a variety of applications. This work investigated the effects of different parameters on the production of zirconia ceramic foam using the sol-gel process associated with liquid foam templates. Evaluation was made of the influence of the thermal treatment temperature on the porous and crystalline characteristics of foams manufactured using different amounts of sodium dodecylsulfate (SDS) surfactant. A maximum pore volume, with high porosity (94%) and a bimodal pore size distribution, was observed for the ceramic foam produced with 10% SDS. Macropores, with an average size of around 30 μm, were obtained irrespective of the SDS amount, while the average size of the supermesopores increased systematically as the SDS amount was increased up to 10%, after which it decreased. X-ray diffraction analyses showed that the sample treated at 500 °C was amorphous, while crystallization into a tetragonal metastable phase occurred at 600 °C due to the presence of sulfate groups in the zirconia structure. At 800 and 1000 °C the monoclinic phase was observed, which is thermodynamically stable at these temperatures.
format Online
Article
Text
id pubmed-5452520
institution National Center for Biotechnology Information
language English
publishDate 2013
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-54525202017-07-28 Liquid Foam Templates Associated with the Sol-Gel Process for Production of Zirconia Ceramic Foams Beozzo, Cristiane Carolina Alves-Rosa, Marinalva Aparecida Pulcinelli, Sandra Helena Santilli, Celso Valentim Materials (Basel) Article The unique properties of ceramic foams enable their use in a variety of applications. This work investigated the effects of different parameters on the production of zirconia ceramic foam using the sol-gel process associated with liquid foam templates. Evaluation was made of the influence of the thermal treatment temperature on the porous and crystalline characteristics of foams manufactured using different amounts of sodium dodecylsulfate (SDS) surfactant. A maximum pore volume, with high porosity (94%) and a bimodal pore size distribution, was observed for the ceramic foam produced with 10% SDS. Macropores, with an average size of around 30 μm, were obtained irrespective of the SDS amount, while the average size of the supermesopores increased systematically as the SDS amount was increased up to 10%, after which it decreased. X-ray diffraction analyses showed that the sample treated at 500 °C was amorphous, while crystallization into a tetragonal metastable phase occurred at 600 °C due to the presence of sulfate groups in the zirconia structure. At 800 and 1000 °C the monoclinic phase was observed, which is thermodynamically stable at these temperatures. MDPI 2013-05-10 /pmc/articles/PMC5452520/ /pubmed/28809254 http://dx.doi.org/10.3390/ma6051967 Text en © 2013 by the authors. licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Beozzo, Cristiane Carolina
Alves-Rosa, Marinalva Aparecida
Pulcinelli, Sandra Helena
Santilli, Celso Valentim
Liquid Foam Templates Associated with the Sol-Gel Process for Production of Zirconia Ceramic Foams
title Liquid Foam Templates Associated with the Sol-Gel Process for Production of Zirconia Ceramic Foams
title_full Liquid Foam Templates Associated with the Sol-Gel Process for Production of Zirconia Ceramic Foams
title_fullStr Liquid Foam Templates Associated with the Sol-Gel Process for Production of Zirconia Ceramic Foams
title_full_unstemmed Liquid Foam Templates Associated with the Sol-Gel Process for Production of Zirconia Ceramic Foams
title_short Liquid Foam Templates Associated with the Sol-Gel Process for Production of Zirconia Ceramic Foams
title_sort liquid foam templates associated with the sol-gel process for production of zirconia ceramic foams
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5452520/
https://www.ncbi.nlm.nih.gov/pubmed/28809254
http://dx.doi.org/10.3390/ma6051967
work_keys_str_mv AT beozzocristianecarolina liquidfoamtemplatesassociatedwiththesolgelprocessforproductionofzirconiaceramicfoams
AT alvesrosamarinalvaaparecida liquidfoamtemplatesassociatedwiththesolgelprocessforproductionofzirconiaceramicfoams
AT pulcinellisandrahelena liquidfoamtemplatesassociatedwiththesolgelprocessforproductionofzirconiaceramicfoams
AT santillicelsovalentim liquidfoamtemplatesassociatedwiththesolgelprocessforproductionofzirconiaceramicfoams