Figure 5. SEM micrographs for each condition of the cast specimen. (a) Blasting with ZrO2, (b) blasting with ZrO2 and etching with HF, (c) blasting with Al2O3, and (d) blasting with Al2O3 and etching with HF.

Figure 5. SEM micrographs for each condition of the cast specimen. (a) Blasting with ZrO2, (b) blasting with ZrO2 and etching with HF, (c) blasting with Al2O3, and (d) blasting with Al2O3 and etching with HF.

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