Effects of Substrate Temperature on the Corrosion Behaviour of Nanochromium Coatings Deposited by Direct Current Magnetron Sputtering

Table 2

Fitting results of impedance spectra for the corrosion of Cr-1 coatings in 0.5 M H₂SO₄ + 2 ppm solution.

Time (h)	(Ω·cm^2)	(Ω^−1·cm^−2 S^−n)		(Ω·cm^2)	(Ω·cm^2 S^−n)		(Ω·cm^2)
1	2.191		0.958	1.348		0.944
24	2.274		0.969	1.141		0.946	—
72	2.385		0.967	1.030		0.950	—
144	2.728		0.965	0.937		0.953	—
312	2.499		0.967	0.986		0.951	—
768	2.546		0.963	0.671		0.945	—