Nace CP 1 - Cathodic Polarization Curves; Polarization Decay

TM0497-2002
14 NACE International
Spike
"On" Potential
"Instant Off" Potential (Polarized Potential)
Depolarizing Line
Voltage Drop (IR Drop)
Polarization Decay
Figure 3a
Polarization Decay
Normal Operation
"On" Potential
Current Interruption
"Instant-Off"
Potential
Polarization
Cathodic Protection Applied
Corrosion Potential
Polarizing Line
Figure 3b
Polarization Formation
FIGURE 3
Cathodic Polarization Curves
1,200
1,100
1,000
900
800
700
600
500
1,100
1,000
900
800
700
600
500
400