RETRACTED: Microstructure development and phase evolution of alumina–mullite nanocomposite

This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).This article has been retracted at the request of the Editor-in-Chief, due to its similarity with the paper titled "A comparative study of microstructural development in the sol–gel derived alumina–mullite nanocomposites using colloidal silica and tetraethyl orthosilicate", by the same authors: A. Sedaghat, E. Taheri-Nassaj, G.D. Soraru, T. Ebadzadeh, published in 2011 in Journal of Sol-Gel Science and Technology 58(3), pp. 689-697, 10.1007/s10971-011-2446-3.