1. PPGEM/UFRGS (Program of Postgraduate Studies in Mining, Metals and Materials Engineering of the University of Rio Grande do Sul); Av. Bento Gonçalves, 9500-Setor 4-Prédio 74-sala 211 Campus do Vale, CEP 91501-970 Porto Alegre Brazil
2. Institute of Iron and Steel Technology (IEST), Technische Universität Bergakademie Freiberg; Leipziger Straße 34, 09599 Freiberg/Saxony Germany