Fig. 1. (a) Cu-die used for casting plates and (b) set-up for the casting process with Cu-die, vacuum pump, manometer and needle valve for controlling the applied vacuum.

Fig. 1. (a) Cu-die used for casting plates and (b) set-up for the casting process with Cu-die, vacuum pump, manometer and needle valve for controlling the applied vacuum.

Fig. 1. (a) Cu-die used for casting plates and (b) set-up for the casting process with Cu-die, vacuum pump, manometer and needle valve for controlling the applied vacuum.

Fig. 1. (a) Cu-die used for casting plates and (b) set-up for the casting process with Cu-die, vacuum pump, manometer and needle valve for controlling the applied vacuum.