Question

corrosion of copper ​

Answer 1

Answer:

Copper corrosion is the corrosion of materials made of copper or copper alloys. When exposed to the atmosphere, copper oxidizes, causing bright copper surfaces to tarnish. After a few years, this tarnish gradually changes to dark brown or black, and finally to green.

Answer 2

Answer:

Copper corrosion is the corrosion of materials made of copper or copper alloys. When exposed to the atmosphere, copper oxidizes, causing bright copper surfaces to tarnish. After a few years, this tarnish gradually changes to dark brown or black, and finally to green.

Copper corrosion occurs at negligible rates in unpolluted air, water and deaerated non-oxidizing acids. However, it is susceptible to more rapid attack in oxidizing acids, oxidizing heavy-metal salts, sulfur, ammonia, and some sulfur and ammonia compounds.

There are two known types of copper corrosion which are uniform copper corrosion and non-uniform copper corrosion.

Copper is also susceptible to crevice corrosion attack.