Fig. 6: Surface morphology of samples after DL-EPR tests.

BSE-SEM images of samples aged at 700 °C for 48 h (a) and 500 h (b), and samples aged at 800 °C for 48 h (c), 72 h (d), and 500 h (e).

BSE-SEM images of samples aged at 700 °C for 48 h (a) and 500 h (b), and samples aged at 800 °C for 48 h (c), 72 h (d), and 500 h (e).