Corrosion Study of Steel API 5A, 5L and AISI 1080, 1020 in Drill-Mud Environment of Iranian Hydrocarbon Fields

Table 5

The potentiodynamic tests of drill cable (sample 2); path 1: anodic-cathodic, path2: reverse scan. Sample 3: Drill Cable.

Media	𝐸corr V (path 1)	𝐸corr V (path 2)	𝐼corr mA/cm^2	Passivation
HCL 0.1 M	−0.5	−0.52	12000	After 1.5
HCl 1 M	−0.5	−0.44	12100	—
H2SO4 0.1 M	−0.47	−0.47	12000	After 1.5
H2SO4 1 M	−0.44	−0.42	12200	—
NaOH 0.1 M	−0.89	—	100	−0.7 to 0.5
NaOH 1 M	—	—	app Zero	−1 to 0.5