Table 1 The lattice parameters and CSR of the lepidocrocite, goethite, and spinel ferrite phases
Water salt solutions | Mineral phases formed on the steel surface contacting with water salt solutions | |||||
---|---|---|---|---|---|---|
γ-FeOOH | α-FeOOH | MeFe2O4 | ||||
The lattice parameters, nm | The particle size, nm | The lattice parameters, nm | The particle size, nm | The lattice parameters, nm | The particle size, nm | |
CoCl2 | a—0.3865 b—1.2400 c—0.3061 V—0.1467 | 17.6 | a—0.4611 b—1.0178 c—0.2998 V—0.1407 | 16.6 | a—0.8293 V—0.5703 | 18.7 |
NiCl2 | a—0.3855 b—1.2681 c—0.3024 V—0.1478 | 18.6 | a—0.4648 b—0.9975 c—0.3029 V—0.1404 | 18.4 | a—0.8397 V—0.5920 | 16.8 |
ZnCl2 | a—0.3876 b—1.2638 c—0.3067 V—0.1502 | 21.6 | The phase is absent | a—0.8395 V—0.5917 | 16.4 | |
CuCl2 | a—0.3871 b—1.2601 c—0.3054 V—0.1490 | 12.4 | a—0.4668 b—0.9740 c—0.3043 V—0.1384 | 18.32 | a—0.8394 V—0.5914 | 18.5 |
CoSO4 | a—0.3866 b—1.2501 c—0.3059 V—0.1478 | 20.1 | a—0.4629 b—1.0854 c—0.2991 V—0.1503 | 14.8 | a—0.8299 V—0.5716 | 15.9 |
NiSO4 | a—0.3876 b—1.2546 c—0.3047 V—0.1482 | 13.7 | a—0.4630 b—0.9969 c—0.3016 V—0.1392 | 14.53 | a—0.8370 V—0.5864 | 24.8 |
ZnSO4 | a—0.3858 b—1.2692 c—0.3062 V—0.1499 | 21.7 | a—0.4626 b—1.0106 c—0.3013 V—0.1408 | 16.2 | a—0.8404 V—0.5936 | 19.1 |
CuSO4 | a—0.3875 b—1.2565 c—0.3058 V—0.1489 | 13.3 | a—0.4504 b—1.1904 c—0.2993 V—0.1605 | 13.5 | a—0.8377 V—0.5878 | 24.7 |