Corrosion Study of Iron and Copper Metals and Brass Alloy in Different Medium

Memon Samina,A Venkatachalam,Abdul Karim

doi:10.1155/2011/193987

Abstract

The corrosion of iron, copper and brass alloy has been investigated in different mediumi.e. HNO3, H3PO4, H2SO4, HCl, CH3COOH. The study reveals that corrosion rate increases in the order iron > copper > brass and for the medium the corrosion follows the order HNO3> H3PO4> H2SO4> HCl > CH3COOH. The rate of corrosion increases with increasing concentration of acid and with increase in time.

Highlights

Corrosion[1,2,3] is defined as the destruction or deterioration of material because of reaction with its environment
The weight loss in different solutions and the emf was measured for each metal by using the respective metal strips as an electrode and calomel electrode as the reference electrode
Corrosion rate on iron metal was found almost similar to acetic acid, succinic acid and salicylic acid and more at higher concentrations for oxalic and benzoic acids and it has been found to be comparatively less for bases NaOH, and KOH

Summary

Introduction

Corrosion[1,2,3] is defined as the destruction or deterioration of material because of reaction with its environment. Acids like HCl, H2SO4, H3PO4, HNO3 and CH3COOH of different concentrations viz 0.1 N, 0.5 N, 1 N, 4 N, were prepared from commercially available (A.R) grades and were Corrosion Study of Iron and Copper Metals and Brass Alloy S345 standardized. Bases like NaOH, KOH and NH4OH have been used in different concentrations[4,5,6].

Results

Conclusion