الفهرس 
chapter 1Only 14 pages are availabe for public view
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Abstract
The corrosion problem is a great importance which faced the world from the last years until now we cant hide this problem from our live but we can reduce it in the metals dy several methods as the environment need This work discusses the corrosion of copper in 1 M HNo3.
This work consists of three basic chapters
Chapter one: INTRODUCTION
This chapter discusses: corrosion theory causes of corrosion forms of corrosion , corrosion migration types of inhibitors Literature survey of corrosion of copper and aim of this study.
Chapter two: EXPERIMENTAL AND TECHNIQUES
It deals with the results obtained and their discussion and this chapter is divided into three sections:
Section (A):
Evaluation of the inhibitor efficiency by weight loss method for all the organic compound in 1 M HNO3 at 30+_ 1 C reveled that the inhibitor efficiency increases with the concentration from these studies the order of inhibition efficiency of these compounds is as follows:
Section (A):
Evaluation of the inhibitor efficiency by weight loss method for all the organic compounds in 1 M NHO3 AT +_ 1 C reveled that the inhibitor efficiency increases with the concentration from these studies the order of inhibition efficiency of these compounds is as follows:
Compound (1)≥ compound (2) ≥ compound (3)≥compound(4)
Section (B):
Contains the results of potentiodynamic polarization The results obtained are presented in many Tables and Figures also the effect of inhibitors on the cathodic and anodic polarization of copper in 1 M HNO3 solution was investigated Corrosion rate was found to decrease with increase in the concentration of the additives
The polarization curves indicated that these compounds influence both cathodic and anodic reactions The order of decreasing inhibition efficiency for copper in 1 M HNO3 at all concentrations used
Compound (1)≥ compound (2) ≥ compound (3)≥compound(4)
Section (C):
Some quantum chemical quantities were calculated which is a theoretical analogue to ionization potential that illustrates the electron affinity of the molecule affect the inhibition efficiency of these organic compounds The inhibition efficiency was found to increase with increasing the energy of HOMO.
The influence of the chemical structure of the investigated organic compounds on their inhibition efficiencies was discussed: the order of these inhibition efficiencies depends mainly upon the number of adsorption active centers and molecular weight.
Conclusion:
The weight loss, potentiodynamic polarization electrochemical impedance spectroscopy (EIS) measurements electrochemical frequency (EFM) and quantum calculation supports the assumption that corrosion inhibition primarily takes place through adsorption of the inhibitors on copper surface Agreement among these different independent techniques indicates the validity of the obtained results.