Table 2 Summary of quantitative results obtained from SEM-EDX spectra collected from the surfaces after sulfidation according to the respective methods 1–5, values in wt%. Since the penetration depth of electrons might be deeper than the thickness of the sulfide layer, interference with the substrate cannot be avoided
Method | Location | Ag | Cu | S | O |
|---|---|---|---|---|---|
| Â | Non-treated samples average | 91.4 | 7.6 | 0.0 | 1.0 |
1 | Area 6 × 6 µm with corrosion grains (0.1–0.8 µm) | 89.1 | 9.6 | 0.1 | 1.2 |
2 | Area 6 × 6 µm with corrosion grains 0.5–3.0 µm) | 60.9 | 20.8 | 0.1 | 15.7 |
3 | Area with corrosion needles | 53.1 | 30.9 | 12.7 | 2.7 |
4 | Areas between agglomerated grains | 73.8 | 11.1 | 0.4 | 14.4 |
|  | Corrosion agglomerates (0.1–3.0 µm) | 25.6 | 35.4 | 0.0 | 39.1 |
5 | Area with corrosion grains (0.3 µm) | 50.5 | 35.8 | 10.1 | 3.6 |