ACKNOWLEDGEMENTS
"There are times when silence speaks so much more loudly than words of praise to only as good as belittle a person, whose words do not express, but only put a veneer over true feelings, which are of gratitude at this point of time."
I would like to express my sincere gratitude to my chemistry teachers Mrs. Meenakshi, Mrs. Sonali and Mrs. Shampa for their vital support, guidance and encouragement - without which this project would not have come forth. I would also like to express my gratitude to the staff of the Department of Chemistry at NPS HSR for their support during the making of this project.
CONTENTS
1. Certificate..................................................................2
2. Acknowledgements.................................................. 3
3. Contents....................................................................4
4. Introduction..............................................................5
5. Aim............................................................................6
6. Experiment................................................................7
7. Bibliography..............................................................9
INTRODUCTION
Metals and alloys undergo rusting and corrosion. The process by which some metals when exposed to atmospheric condition i.e., moist air, carbon dioxide form undesirable compounds on the surface is known as corrosion. The compounds formed are usually oxides. Rusting is also a type of corrosion but the term is restricted to iron or products made from it. Iron is easily prone to rusting making its surface rough. Chemically, rust is a hydrated ferric oxide.
Rusting, an electrochemical mechanism:
Rusting may be explained by an electrochemical mechanism. In the presence of moist air containing dissolved oxygen or carbon dioxide, the commercial iron behaves as if composed of small electrical cells. At anode of cell, iron passes into solution as