Nanocrystalline Growth Activation Energy of Zirconia Polymorphs Synthesized by Mechanochemical Technique

Isfahani Taghi Dallali^1,^*, Javadpour Jafar², Khavandi Alireza², Goodarzi Massoud², Rezaie Hamid Reza²

Fig. 8. SEM images of the powders heat treated at different temperatures: a 400 °C, b 700 °C, c 800 °C, d 900 °C, e 1100 °C and f 1200 °C.