what is corrosion and its types and preventing method
Answers
Explanation:
Corrosion is the process of rusting of iron when it reacts with air and moisture.
TYPES OF CORROSION:
There are five general types of corrosion : galvanic , stress cracking, general, localized,and caustic agent corrosion.
When copper reacts with moist carbon dioxide in the air and slowly loses its shiny brown surface and gains a green coat .. AND when silver articles became black after exposed to air as it reacts with sulphur in air to form sulphur sulfide can also be termed as corrosion on a metal ..
HOW TO PREVENT CORROSION:
- By galvanisation : it is a process of protecting iron from rust by applying a thin layer of zinc .
- Alloying : It is a homogeneous mixture of two or more metals or a metal and non metals .
for eg . brass, is an alloy of copper and zinc
and , bronze is an alloy of copper and tin .