Chapter 18, Problem 18.3P

Interpretation Introduction

Interpretation:

Failure of Gray cast iron pipe in the natural gas distribution system needs to be explained.

Concept Introduction:

• Electrochemical corrosion takes place when metal atoms become ions by losing electrons.
• Electrochemical corrosion takes place in an aqueous solution where ions are present in water.
• The process in which electrochemical corrosion creates an electric circuit is known as an electrochemical cell.
• An electrochemical cell is able to generate energy from a chemical reaction or uses energy to produce a chemical reaction.
• Corrosion may lead to the failure of substance.
• Gray cast iron is a type of cast iron having graphic structure. Gray cast iron has resistance to oxidation and high compressive strength.