Corrosion Flashcards
1
Q
Corrosion
A
Destruction or consequent loss of metals through chemical or electrochemical attack by environment
2
Q
Differential metal corrosion
A
It occurs when two metals r kept in contact in corrosive conducting medium Due to diff tendencies oxidation occurs Low electrode potential - anode High electrode potential- cathode Potential diff causes corrosion
3
Q
Differential aeration
A
Metals are exposed to diff air conc or oxygen conc
High oxygen conc-cathode
Low oxygen conc-anode
4
Q
Stress corrosion
A
Bent portion
Loses electrons
Oxidises
Corrosion
5
Q
Microbial
A
Microbial activity
Thiobascillus
