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The results of the EDS point analysis presented in Figure 8.
| Spectrum Number | Chemical Elements [at.%] | |||||
|---|---|---|---|---|---|---|
| O | Al | Si | Ca | Fe | Cu | |
| 1 | 43.83 | 33.72 | 12.76 | 0.95 | -- | 8.74 |
| 2 | 5.94 | 1.69 | -- | -- | -- | 92.37 |
| 3 | 1.92 | 97.47 | -- | -- | 0.31 | 0.30 |
| 4 | 57.31 | 12.26 | 21.16 | 1.10 | 5.60 | 8.17 |
| 5 | -- | 94.01 | -- | -- | -- | 0.39 |
