fig4

Figure 4. SEM micrographs of samples after IA at 700 °C for 10 min: (A) WSA; (B) SA700; and (C) SA550. (D) X-ray diffraction patterns of the IA samples. SEM: Scanning electron microscope.
Figure 4. SEM micrographs of samples after IA at 700 °C for 10 min: (A) WSA; (B) SA700; and (C) SA550. (D) X-ray diffraction patterns of the IA samples. SEM: Scanning electron microscope.
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