Next Article in Journal
Effect of Milling on the Mechanical Properties of Chopped SiC Fiber-Reinforced ZrB2
Previous Article in Journal
Production and Characterization of a New Bacterial Cellulose/Poly(Vinyl Alcohol) Nanocomposite
Previous Article in Special Issue
Organized Silica Films Generated by Evaporation-Induced Self-Assembly as Hosts for Iron Oxide Nanoparticles
Materials 2013, 6(5), 1967-1979; doi:10.3390/ma6051967
Article

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

, * ,
 and
Received: 27 February 2013; in revised form: 23 April 2013 / Accepted: 6 May 2013 / Published: 10 May 2013
(This article belongs to the Special Issue Advances in Sol-gel Derived Materials)
Download PDF [1283 KB, uploaded 10 May 2013]
Abstract: 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.
Keywords: ceramic foam; liquid-foam templates; sol-gel; surfactant; thermal treatment ceramic foam; liquid-foam templates; sol-gel; surfactant; thermal treatment
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Export to BibTeX |
EndNote


MDPI and ACS Style

Beozzo, C.C.; Alves-Rosa, M.A.; Pulcinelli, S.H.; Santilli, C.V. Liquid Foam Templates Associated with the Sol-Gel Process for Production of Zirconia Ceramic Foams. Materials 2013, 6, 1967-1979.

AMA Style

Beozzo CC, Alves-Rosa MA, Pulcinelli SH, Santilli CV. Liquid Foam Templates Associated with the Sol-Gel Process for Production of Zirconia Ceramic Foams. Materials. 2013; 6(5):1967-1979.

Chicago/Turabian Style

Beozzo, Cristiane C.; Alves-Rosa, Marinalva A.; Pulcinelli, Sandra H.; Santilli, Celso V. 2013. "Liquid Foam Templates Associated with the Sol-Gel Process for Production of Zirconia Ceramic Foams." Materials 6, no. 5: 1967-1979.


Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert