electrolytic and galvanic corrosion

Question 1

what is the process of electrolytic corrosion

Answer 1

this is when electrical current is induced into to metals from a nearby influencer such as high voltage buried cables , this causes one metal to now have more voltage which then creates a circuit and because current is the flow of electrons the electrons from one metal are drawn to another leading to one losing electrons and corroding

Question 2

what is the electrolyte

Answer 2

whatever is between the two metals such as soil or clay, and allows electricity to flow through

Question 3

what is the process of galvanic corrosion

Answer 3

this is when 2 dissimilar metals are in close proximity and are separated by n electrolyte or when to metals are touching, if one metal is more chemically active it will draw the electrons from the other metal causing the other to corrode, this creates a battery like system as current is flowing through both metals

Question 4

what is a bimetallic strap

Answer 4

when two dissimilar metals with two different thermal expansion rate are both strapped together and heated and because one expands faster than the other this then causes both to bend

Question 5

what is thermal expansion

Answer 5

when an object expands due to change in temperature

Question 6

what is the measurement for pvc conduit

Answer 6

52 x 10 to the power of -6

Question 7

what should pvc conduits include to stop it from buckling or waving

Answer 7

expansion couplers

Question 8

what is steel and concrete did not have similar expansion rates

Answer 8

buildings made of concrete and reinforced with steel would crumble with one material expanding faster than the other