Effect of Argon-Oxygen Mixing Gas during Magnetron Sputtering on TiO₂ Coatings

Table 3

Electrochemical parameters obtained from the Tafel method for stainless steel with and without coating of TiO₂ (in the operative conditions of the flow of oxygen) in 3.5% NaCl at 25°C.

Sample	(mV)	(nA·cm^−2)	Rp (MΩ·cm^−2)	(mm/year)	Porosity (%)	Pe (%)
Stainless steel		60709	0.000336301	35.01	1,091967969	—
30%		16.328	7.83	0.0038309		99,97
20%		17.69	5.777	0.0051917		99,97
10%		7.823	12.566	0.0017132		99,98
5%						99,99