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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...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2013
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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 |
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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 |
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