Corrosion
Notes
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See all →- What is corrosion and why is it called the reverse of metal extraction? In one line Corrosion is the gradual destruction or deterioration of a metal by chemical or electrochemical reaction with its environment, s... 1
- How does dry or atmospheric corrosion occur, and what decides whether the oxide film protects the metal? In one line Dry corrosion is direct chemical attack of a metal by dry gases (mainly oxygen) forming a surface film, and the nature of this f... 1
- What is the hydrogen evolution mechanism of wet corrosion in an acidic medium? In one line In an acidic, oxygen-poor environment, the metal dissolves at anodic areas and the released electrons reduce H⁺ ions to hydrogen... 1
- How does iron rust in neutral water by the oxygen absorption mechanism? In one line In a neutral or slightly alkaline medium containing dissolved oxygen, iron is oxidised at anodic areas while oxygen is reduced t... 1
- How do selection of metal and proper design help prevent corrosion in engineering structures? In one line Choosing the right (noble or corrosion-resistant) metal for the environment and designing parts so that moisture, crevices and d... 1
- How do the galvanic series position, metal purity and nature of corrosion product affect corrosion rate? In one line Corrosion is faster when the metal is more active (higher in the galvanic series) or coupled with a very different metal, when i... 1