Fig. 12: SEM images of Sample ZQ.

a 2000× of SEM. Area 1, 2 and 3 are the locations to implement EDS analysis. b 3000× of SEM, showing the microcracks in the sample. c 5000× of SEM.
a 2000× of SEM. Area 1, 2 and 3 are the locations to implement EDS analysis. b 3000× of SEM, showing the microcracks in the sample. c 5000× of SEM.