Corrosion Performance of AISI-309 Exposed to Molten Salts V₂O₅-Na₂SO₄ at 700°C Applying EIS and Electrochemical Techniques

Table 3

Calculated parameters obtained from the simulation of EIS experimental data for AISI-309 exposed in molten salts 50 mol% V₂O₅-50 mol% Na₂SO₄ at 700°C.

Time (h)	(ohms·cm^2)	CPEox (μF/cm^2)		(ohms·cm^2)	CPEdl (μF/cm^2)		(ohms·cm^2)
0	2.7	—	—	—	0.697	0.56	13.67
20	3.4	—	—	—	0.444	0.56	16.53
40	3.8	—	—	—	0.447	0.54	19.15
50	3.0	0.498	0.43	3.39	0.034	0.90	58.07
70	3.3	0.477	0.41	16.62	0.357	0.79	89.57
90	4.0	0.432	0.47	12.58	0.696	0.65	28.07
100	4.0	0.266	0.48	6.36	0.889	0.60	30.62
120	4.2	0.265	0.45	7.30	0.908	0.64	22.80