Table 1.
Sample | Initial surface finish | Treatment |
---|---|---|
Group A | Polished | None |
Group B | Bead blasted | None |
Group C | Bead blasted | Anodization in sulfuric acid |
Group D | Bead blasted | Anodization in sulfuric acid followed by anodization in hydrofluoric acid |
Group E | Bead blasted | Anodization in sulfuric acid followed by etching in hydrofluoric acid |