Basic Chemistry and Basic Corrosion Theory 2:31
CP 1 – Cathodic Protection Tester Course Manual
© NACE International, 2000
02/01/05
Results
Metal Sample Potential
Copper
Steel
Conclusion
1. Steel is more electronegative than copper
2. The difference in potential between the steel and the copper is the same as
measured in Step A.
Step C—Polarized Potential Measurement
Copper
Sheet
Steel
Sheet
10 Ω
V
V
Reference Electrodes
1. Connect the steel to the copper through the 10-Ω resistor.
2. Repeat steps B1, B2 and B4.
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