Table of Contents
Journal of Ceramics
Volume 2014, Article ID 270689, 7 pages
http://dx.doi.org/10.1155/2014/270689
Research Article

Increasing Bending Strength of Porcelain Stoneware via Pseudoboehmite Additions

1Departamento de Ingeniería Industrial, Instituto Tecnológico de Morelia, Avenida Tecnológico 1500, Col. Lomas de Santiaguito, 58120 Morelia, MICH, Mexico
2Departamento de Cerámica, Instituto de Investigaciones Metalúrgicas, Universidad Michoacana de San Nicolás de Hidalgo, Apdo. Postal 888, 58000 Morelia, MICH, Mexico

Received 12 October 2013; Revised 3 March 2014; Accepted 3 April 2014; Published 28 April 2014

Academic Editor: Keizo Uematsu

Copyright © 2014 Omar Aguilar-García et al. 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.

Abstract

Pseudoboehmite nanoparticles synthesized through the desulfation of Al2(SO4)3 were used to investigate the reinforcement of commercial porcelain stoneware. Fractured specimens investigated by SEM suggest that the added pseudoboehmite precursor generated a nanometric primary mullite phase dispersed in the porcelain glassy phase that limited and stopped the intergranular crack propagation. The porcelain modulus of rupture increased twice the value of the modulus of rupture (108 MPa) as compared with that samples without pseudoboehmite additions. Pseudoboehmite also led to increased densification of porcelain stoneware bodies up to 1250°C as shown by thermodilatometry data.