1. Post Graduate Program in Mining, Metallurgical and Materials Engineering (PPGEM); Federal University of Rio Grande Do Sul (UFRGS); Av. Bento Gonçalves, 9500, Porto Alegre/RS 91501-970 Brazil
2. Post Graduate Program in Engineering of Processes and Technologies (PGEPROTEC); University of Caxias Do Sul (UCS); Rua Francisco Getúlio Vargas, 1130, Caxias Do Sul/RS 95070-560 Brazil
3. Department of Applied Science and Technology; Polytechnic Institute of Turin; via Teresa Michel, Alessandria Turin 5 15100 Italy