Corrosion Inhibition of Aluminium in Hydrochloric Acid by Natural Plant Extracts

Table of Contents

Chapter -1. Introduction of corrosion

1.1 General Aspect of Corrosion

1.2 Factors Influencing Corrosion

1.3 Types of Corrosion

1.4 Aim of Research work

1.5 References

Chapter -2. Performance and Impact of plant extracts as Metallic Corrosion Inhibitors

2.1 Plant extract as Corrosion Inhibitors

2.2 Effect of Functional Group on Inhibitors

2.3 Classification of Inhibitors

2.4 Phenomenon of Adsorption

2.5Azadirechtaindica utilized in the present work its properties

And uses as corrosion inhibitor

2.6Murrayakoenigii utilized in the present work its properties

And uses as corrosion inhibitor

2.7References

Chapter -3.Spectral studies on plants use as green inhibitor

3.1 Infrared spectroscopy

3.2 X-ray fiuoresence study

3.3 References

Chapter -4. Experimental Methods and Discussion of the Results

4.1 Experimental Method

4.2 Preparation of plant extract

4.3 Discussion of the Results

4.4 Effect of Inhibitor Concentration

4.5 Effect of Exposure Period

4.6 Effect of Temperature

4.7 Scanning electron microscopic study

4.8 References

Chapter -5. Summary of the Dissertation

5.1 Effect of Inhibitor Concentration

5.2 Effect of Exposure Period

5.3 Effect of Temperature

5.4 Scanning electron microscopic study

Research Objectives and Themes

This research aims to investigate the corrosion inhibition properties of ethanol extracts from Azadirachta indica and Murraya koenigii leaves for aluminium in an aqueous hydrochloric acid environment. The study seeks to evaluate the effectiveness of these natural, eco-friendly plant extracts as cost-effective alternatives to synthetic inhibitors, focusing on optimizing inhibitor concentrations and understanding the underlying adsorption mechanisms.

• Corrosion inhibition efficiency of plant-based natural extracts.
• Evaluation of weight loss and surface morphology changes.
• Influence of concentration, exposure period, and temperature on corrosion rates.
• Adsorption isotherms and spectral analysis for mechanistic insights.

Excerpt from the Book

Chapter Summaries

Chapter -1. Introduction of corrosion: Provides an overview of metallic corrosion, including its economic impact, influencing factors, and different types of corrosion.

Chapter -2. Performance and Impact of plant extracts as Metallic Corrosion Inhibitors: Examines the role of plant extracts as inhibitors, their classification, and the phenomenon of adsorption on metallic surfaces.

Chapter -3. Spectral studies on plants use as green inhibitor: Details the spectral analysis of Azadirachta indica and Murraya koenigii leaves using Infrared and X-ray fluorescence studies.

Chapter -4. Experimental Methods and Discussion of the Results: Describes the experimental methodology including weight loss measurements and discusses the results regarding inhibitor concentration, exposure period, and temperature.

Chapter -5. Summary of the Dissertation: Recaps the research findings and summarizes the effects of different experimental parameters on the corrosion inhibition efficiency.

Keywords

Aluminium, Hydrochloric acid, Corrosion inhibition, Azadirachta indica, Murraya koenigii, Weight loss method, Adsorption, Green inhibitors, SEM analysis, Surface morphology, Acid concentration, Temperature effect, Exposure period, Ethanol extract, Metallic corrosion.

Frequently Asked Questions

What is the core focus of this research?

The research focuses on utilizing natural plant extracts, specifically Azadirachta indica and Murraya koenigii, as eco-friendly corrosion inhibitors for aluminium in a hydrochloric acid medium.

What are the primary thematic fields covered?

The work covers electrochemical corrosion, plant-based inhibitor performance, surface analysis techniques like SEM, and the thermodynamic study of adsorption processes.

What is the primary goal of the study?

The primary goal is to find efficient, low-cost, and environmentally safe inhibitors to protect aluminium against aggressive acidic corrosion.

Which scientific methods are employed?

The study utilizes weight loss measurements, spectral analysis (Infrared and X-ray fluorescence), and Scanning Electron Microscopy (SEM) to assess corrosion inhibition performance.

What topics are discussed in the main body?

The main body details the experimental methodology, the impact of various inhibitors, their concentrations, and environmental factors like temperature and exposure time on corrosion rates.

Which keywords best characterize this work?

The research is best characterized by keywords such as corrosion inhibition, aluminium, green inhibitors, Azadirachta indica, Murraya koenigii, adsorption isotherms, and SEM analysis.

How does the temperature affect the corrosion inhibition efficiency?

The study indicates that inhibitor efficiency generally decreases with a rise in temperature, although the extent of this reduction varies depending on the specific inhibitor and its concentration.

What role does the concentration of plant extract play in the inhibition process?

At low concentrations, plant extracts may accelerate corrosion, but higher concentrations significantly improve inhibition by forming a protective film on the metal surface.