“…Suspensions with different percents of zirconium were prepared, Al-0%Zr, Al-0.5%Zr, Al-1%Zr and Al-1.5%Zr (weight per cent), using a colloidal method developed by Schehl et al [15] and Díaz, et al [16]. Sintering was performed in an SPS machine (HPD-25, FCT System GmbH, Germany), using an initial heating rate of 45ºC/min up to 420ºC, followed by a rate of 70ºC/min up to a final temperature of 625ºC.…”