Fig. 10

SEM images of samples prepared from the powders after 24 h of decantation that were hot-pressed with CAS conditions at 1080 °C and 100 MPa for 36 (Exp. #11) or 38 (Exp. #12) hours. a SEI of the boundary region between black (left) and white (right) coloured parts (see Fig. 4f). b SEI of the white coloured part of the sample. c SEI of the black coloured part of the sample. d BEI of the same place as (c)