Research Article
Sealing of PEO Coated AZ91 Magnesium Alloy Using La-Based Solutions
Table 5
Quantitative results (at %) of EDS analysis of the samples before and after 7 days of immersion.
| | O% | Na% | Mg% | Al% | Si% | P% | La% | Cl% | S% |
| PEO | 61.04 | 2.54 | 20.21 | 0.34 | 12.42 | 3.45 | — | — | — | 12 g/l La 30°C 10 min | 60.62 | 2.33 | 14.91 | 0.42 | 9.61 | 3.69 | 8.42 | — | — | 12 g/l La 50°C 30 min | 58.69 | 3.06 | 12.43 | 0.96 | 9.42 | 4.23 | 11.21 | — | — | PEO Corr | 64.20 | 2.00 | 19.20 | 0.3 | 9.47 | 2.50 | — | 1.1 | 1.23 | 12 g/l La 30°C 10 min Corr | 63.42 | 2.12 | 18.26 | 0.3 | 8.96 | 2.42 | 2.54 | 0.96 | 1.02 | 12 g/l La 50°C 30 min Corr | 63.84 | 3.00 | 12.36 | 0.4 | 7.67 | 2.79 | 9.56 | 0.15 | 0.23 |
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