Resumo

LUZ, A. P.  e  PANDOLFELLI, V. C.. Thermodynamic simulation and its application to evaluate the performance of refractory materials. Cerâmica [online]. 2011, vol.57, n.343, pp. 294-304. ISSN 0366-6913.  http://dx.doi.org/10.1590/S0366-69132011000300007.

Corrosion, oxidation and wear of the refractory materials have been studied during the latest years. These phenomena are complex and usually are carried out at high temperatures and severe working conditions. Thus, the use of thermodynamic simulations to evaluate the refractories performance has been receiving a particular attention lately. In order to verify which calculations can be developed and the advantages and disadvantages of these analyses, the use of Factsage® software to study the performance of several refractories is proposed in this work. The aim of this paper goes beyond of a simple review of the calculations presented in the literature, because several thermodynamic simulations were carried out and discussed herein. The collected results proved that these analyses can be helpful to understand the several steps and reactions involved in corrosion and wear phenomenon of refractory materials. However, any information about the kinetics aspects and distribution of the reaction products are not provided in these calculations. Therefore, aiming to better understand the reactions mechanisms of some transformations, both analyses, thermodynamic and microstructural, are required.

Palavras-chave : thermodynamic analyses; FactSage; corrosion; oxidation.