International Scholarly Research Notices

Research Article

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

Table 4

Potentiodynamic results of tube casing (sample 2); path 1: anodic-cathodic, path2: reverse scan. Sample 2: Tube Casing.
Media 𝐸 c o r r V (path 1) 𝐸 c o r r V (path 2) 𝐼 c o r r mA/cm2Passivation
HCL 0.1M βˆ’0.51 βˆ’0.53 2200β€”
HCl 1 M βˆ’0.5 βˆ’0.5 2200β€”
H2SO4 0.1 M βˆ’0.55 βˆ’0.5 2000After 1.5 V
H2SO4 1 M βˆ’0.47 βˆ’0.49 2300β€”
NaOH 0.1 M βˆ’0.78 βˆ’0.31 4000βˆ’0.6 to 0.5 V
NaOH 1 M βˆ’0.83 βˆ’0.33 900βˆ’0.7 to 0.9 V
Mud 1 βˆ’0.68 βˆ’0.6 600Narrow range
Mud 2β€”β€”β€”β€”
Mud 3 βˆ’0.88 βˆ’0.64 600β€”
Mud 4 βˆ’0.7 βˆ’0.58 2000β€”
Mud 5 βˆ’0.74 βˆ’0.56 2000β€”