Corrosion Behavior of Low Carbon Steel in Presence of Chlorides, Cyanides, and Sulphates

Abstract

Corrosion is an important phenomena playing a role in day to day life. Every one of us has seen corrosion in one form or another. With the word corrosion the most familiar example which strikes our mind is of rust formation. Corrosion products of iron are commonly known as rust. Among metals and alloy of metals, mils steel is majorly used in all forms of industry and household items. Due to its vast application in multiple fields, it is exposed to varying environment and media. Each and every environment has their own mechanism and tendency to physically and chemically interact with steel. The purpose of this study was to understand the effect of various industrial wastewater components like Chlorides, Sulphates and Cyanides etc. on corrosion rate of mild steel. Weight loss method was used to determine the corrosion rates and point out the concentration which is disastrous to mild steel. Corrosion inhibition is a necessary economic effect. Lots of chemical compounds are known to inhibit corrosion in various environments. In this case Aniline was studied to determine its corrosion inhibition efficiency. It was found that Aniline is highly efficient against chlorides while least efficient against phenols. Aniline was found to be suitable for low temperature range and lost its knack as the temperature was increased. There are other chemicals which can be used to inhibit corrosion.