AMPP NACE CP2 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED

AMPP NACE CP2 EXAM QUESTIONS AND ANSWERS WITH

COMPLETE SOLUTIONS VERIFIED


Nernst Equation

Demonstrates how the metal ion concentration in the electrolyte affects the potential of

the electrode

EMF series

The arrangement of elements according to their electrode potential, or their tendency to

corrode vs SHE standard hydrogen electrode

Galvanic Series

List of metals and alloys arranged according to their corrosion potentials in a common

electrolyte

EMF (electromotive force)

Driving force for corrosion (voltage difference)

Volt

joule per coulomb where a joule is a unit of energy

Amps (Amperes)

Rate of flow of charge, 1 coulomb per second

Metal ion concentration HIGH

less active the metal will be in that particular electrolyte

Temperature

, Temp ⬆️
Corrosion ⬆️

Temp ⬇️
Corrosion ⬇️

Dezincification

Zinc Corrosion/leaching in brass alloys

Graphitic Corrosion

Iron Corrosion/leaching in cast and ductile iron

Oxygen Concentration

Oxygen⬆️
Corrosion ⬇️

Oxygen ⬇️
Corrosion ⬆️

Salt Concentration

Salt ⬆️
Corrosion ⬆️

Salt⬇️
Corrosion ⬇️

PH

0-14

7 Neutral

0-6 Acidic

8-14 Alkaline

Each unit of PH = 60mv change in potential

Faraday's Law

Weight loss of metal with time and current

Polarization ⬆️
Current....

⬇️

activation polarization