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 6

Potentiodynamic tests for connecting tube (sample 4); path 1: anodic-cathodic and path 2: reverse scan. Sample 4: connecting tube.
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’0.48 3700β€”
HCl 1 M βˆ’0.46 βˆ’0.45 3800β€”
H2SO4 0.1 M βˆ’0.48 βˆ’0.51 3800After 1.5
H2SO4 1 M βˆ’0.43 βˆ’0.45 3800β€”
NaOH 0.1 M βˆ’0.85 βˆ’0.35 500βˆ’0.7 to 0.5
NaOH 1 M βˆ’0.92 βˆ’0.1 500βˆ’0.7 to 0
Mud 1 βˆ’0.76 βˆ’0.58 500βˆ’0.6 to 0
Mud 2 βˆ’0.8 βˆ’0.48 400β€”
Mud 3 βˆ’0.58 βˆ’0.58 300β€”
Mud 4 βˆ’0.76 βˆ’0.62 3700β€”
Mud 5 βˆ’0.78 βˆ’0.58 β€”β€”