Open Access
Table 2
Summary of the corrosion parameters for C25 and 304L SS in boiling HNO3 solutions with different Ce⁴⁺ concentration.
| Materials | HNO3 (mol/L) | Ce⁴⁺ (g/L) | Rp (Ω·cm2) | Ecorr (V vs. SCE) | Icorr (μA/cm2) | Corrosion rate (240 h, mm/y) |
|---|---|---|---|---|---|---|
| C25 | 3 | 0.1 | 6901 | 905.4 | 2.843 | – |
| C25 | 3 | 1 | 138 | 990.4 | 355 | – |
| C25 | 3 | 5 | 19 | 1019 | 2512 | – |
| C25 | 6 | 0.1 | 3283 | 949.3 | 7.418 | 0.021 |
| C25 | 6 | 1 | 119 | 1009 | 393.2 | 0.155 |
| C25 | 6 | 5 | 13 | 1040 | 3595 | 0.826 |
| C25 | 10 | 0.1 | 2474 | 932.1 | 7.535 | – |
| C25 | 10 | 1 | 114 | 1032 | 455 | – |
| C25 | 10 | 5 | 18 | 1060 | 3359 | – |
| 304L | 3 | 0.1 | 2246 | 934.2 | 12.47 | – |
| 304L | 3 | 1 | 149 | 992.9 | 364.3 | – |
| 304L | 3 | 5 | 21 | 1018 | 2537 | – |
| 304L | 6 | 0.1 | 2498 | 934.5 | 13.85 | 0.051 |
| 304L | 6 | 1 | 175 | 999.5 | 460.2 | 0.24 |
| 304L | 6 | 5 | 17 | 1036 | 3982 | 1.206 |
| 304L | 10 | 0.1 | 1930 | 923.2 | 13.72 | – |
| 304L | 10 | 1 | 137 | 1024 | 478.8 | – |
| 304L | 10 | 5 | 18 | 1048 | 3628 | – |
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