Cathodic Protection Flashcards
Corrosion is a
_____________ action
electrochemical
Corrosion is the conversion of alloys back into their more stable elements ie steel into iron oxide (rust). True or False?
True
Four components are necessary for corrosion to occur. What are they?
Cathode
Anode
Electrolyte
Conductive path
Electrolysis is a chemical decomposition produced by passing an electric current through a liquid or solution containing ions. True or False?
True
Electrolysis happens when?
Two dissimilar metals touch
An anode is a _________ charged electrode by which electrons leave a device
positively
A Cathode is a _________ charged electrode by which electrons enter a device
negatively
_________ is a liquid or gel that contains ions and can be decomposed by electrolysis
Electrolyte
If any one of the four components are missing, corrosion will not occur. True or False?
True
The less Noble (Anodic) will corrode _______
quicker
The more Noble (cathodic) will corrode ________
slower
_________ action is the principle on which batteries operate
galvanic
Cathodic protection does not eliminate corrosion, it does however remove corrosion from the pipe and concentrates the corrosion at another location which is known as the ?
sacrificial anode
Copper (cathode) and zinc (anode) attached by wire, dropped in an electrolyte are the four components needed. True or False?
True
