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 3

The potentiodynamic results of drill pipe (sample 1); path 1: anodic-cathodic, path 2: reverse scan. Sample 1: Drill Pipe.
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 0.1 M βˆ’0.6 βˆ’0.51 3500β€”
HCl 1 M βˆ’ . 0 4 8 βˆ’0.46 3600β€”
H2SO4 0.1 M βˆ’0.46 βˆ’0.49 3400After 1.5 V
H2SO4 1 M βˆ’0.43 βˆ’0.45 3500β€”
NaOH 0.1 M βˆ’0.83 βˆ’0.38 900βˆ’0.7 to 0.5
NaOH 1 M βˆ’0.91 βˆ’0.29 900βˆ’0.8 to 0.4
Mud 1 βˆ’0.82 βˆ’0.56 200βˆ’0.6 to βˆ’0.1
Mud 2 βˆ’0.61 βˆ’0.52 350β€”
Mud 3 βˆ’0.64 β€”150After 0.4
Mud 4 βˆ’0.7 βˆ’0.58 2500β€”