**Author details**

Erika O. Avila-Davila1 , Victor M. Lopez-Hirata2\* and Maribel L. Saucedo-Muñoz2

\*Address all correspondence to: vlopezhi@prodigy.net.mx

1 Tecnológic Innstitute of Pachuca, Pachuca de Soto, Hidalgo, Mexico

2 National Polytechnic Institute (ESIQIE), Department of Metallurgy and Materials, Mexico City, Mexico
