Rare Earth-Based Corrosion Inhibitors

Book description

Corrosion inhibitors are an important method for minimizing corrosion; however traditional inhibitors such as chromates pose environmental problems. Rare earth metals provide an important, environmentally-friendly alternative. This book provides a comprehensive review of current research and examines how rare earth metals can be used to prevent corrosion and applied to protect metals in such industries as aerospace and construction.

Chapter 1 begins by examining the important need to replace chromate, and then goes on to discuss the chemistry of the rare earth metals and their related compounds. Chapter 2 considers the techniques that can be used to identify corrosion inhibition mechanisms and to test the levels of protection offered to different metals by rare earth compounds. Subsequent chapters consider in more detail how rare earth elements can be used as corrosion inhibitors in different forms and for different metals. This includes discussion on the potential of rare earth elements for self-healing, tunable and multifunctional coatings. Finally, chapter 10 considers the cost and availability of the rare earths and the potential health and environmental risks associated with extracting them.

 

  • Provides a review of current research and examines how rare earth metals can be used to prevent corrosion and applied to protect metals in such industries as aerospace and construction
  • Includes discussion on the potential of rare earth elements for self-healing, tunable and multifunctional coatings
  • Considers the cost and availability of the rare earths and the potential health and environmental risks associated with extracting them

Table of contents

  1. Cover image
  2. Title page
  3. Copyright
  4. Contributor contact details
  5. Woodhead Publishing Series in Metals and Surface Engineering
  6. 1. The chemistry of rare earth metals, compounds, and corrosion inhibitors
    1. Abstract:
    2. 1.1 Introduction: the need to replace chromate
    3. 1.2 Rare earth elements and their place in the Periodic Table
    4. 1.3 Discovery, location and abundance of rare earths
    5. 1.4 Uses of the rare earths
    6. 1.5 General chemistry properties of rare earth elements and compounds
    7. 1.6 Rare earth corrosion inhibitors: carboxylate complexes
    8. 1.7 Strategies to model corrosion protection mechanisms
    9. 1.8 Future trends
    10. 1.9 Acknowledgement
    11. 1.10 References
  7. 2. Testing and analysis techniques in rare earth inhibitor research
    1. Abstract:
    2. 2.1 Introduction
    3. 2.2 Identification and simulation of corrosion and inhibition mechanisms
    4. 2.3 Non-electrochemical and electrochemical corrosion testing and analysis techniques
    5. 2.4 Probe techniques for localized corrosion inhibitor research
    6. 2.5 Using electrochemical and surface analytical techniques to evaluate corrosion protection by rare earth metal (REM) compounds
    7. 2.6 Evaluating the corrosion protection of aluminum and its alloys using REM compounds
    8. 2.7 Evaluating the corrosion protection of zinc, zinc alloys and galvanized steel using REM compounds
    9. 2.8 Evaluating the corrosion protection of magnesium and magnesium alloys using REM compounds
    10. 2.9 Evaluating the corrosion protection of steel and stainless steels using REM compounds
    11. 2.11 Conclusions
    12. 2.11 References
  8. 3. Corrosion inhibition with rare earth metal compounds in aqueous solutions
    1. Abstract:
    2. 3.1 Introduction
    3. 3.2 Corrosion inhibitors: the new role of green chemistry
    4. 3.3 Rare earths as corrosion inhibitors in aqueous systems
    5. 3.4 Mechanisms of formation of the layer
    6. 3.5 Special cases of inhibition by rare earth compounds: mechanically assisted corrosion
    7. 3.6 Future trends
    8. 3.7 References
  9. 4. Multifunctional rare earth organic corrosion inhibitors
    1. Abstract:
    2. 4.1 Introduction
    3. 4.2 Corrosion inhibitor technologies
    4. 4.3 Types and performance of multifunctional inhibitors
    5. 4.4 Multifunctional inhibitors for steel
    6. 4.5 Multifunctional inhibitors for aluminium alloys and other metals and alloys
    7. 4.6 Advantages and limitations of using multifunctional rare earth organic inhibitors for corrosion protection
    8. 4.7 Future trends
    9. 4.8 References
  10. 5. Anodized anti-corrosion coatings for aluminium using rare earth metals
    1. Abstract:
    2. 5.1 Introduction
    3. 5.2 Fundamentals of anodizing of aluminium
    4. 5.3 Anodizing technology
    5. 5.4 Corrosion protection by rare earth species
    6. 5.5 Summary
    7. 5.6 References
  11. 6. Corrosion-resistant polymer coatings containing rare earth compounds
    1. Abstract:
    2. 6.1 Introduction
    3. 6.2 Rare earth compounds as replacements of chromate compounds in polymer coatings
    4. 6.3 Using cerium-based inhibitors in eCoat paints
    5. 6.4 Praseodymium-based inhibitors in epoxy polyamide primers
    6. 6.5 Future trends
    7. 6.6 Acknowledgements
    8. 6.7 References
  12. 7. Coatings for corrosion prevention based on rare earths
    1. Abstract:
    2. 7.1 Introduction
    3. 7.2 Rare earth metal (REM) aqueous chemistry
    4. 7.3 Characterization of rare earth corrosion inhibition mechanisms
    5. 7.4 The development of REM containing coatings for aluminium
    6. 7.5 Conversion coating processes
    7. 7.6 Sol-gel coating processes
    8. 7.7 Boehmite formation in solutions containing rare earths
    9. 7.8 Surface cleaning processes and coating effectiveness
    10. 7.9 Performance testing
    11. 7.10 Coatings for metals other than aluminium
    12. 7.11 Summary
    13. 7.12 References
  13. 8. Novel and self-healing anticorrosion coatings using rare earth compounds
    1. Abstract:
    2. 8.1 Introduction
    3. 8.2 Types of self-healing coating
    4. 8.3 Hybrid coatings containing rare earth (RE) compounds: sol-gel coatings
    5. 8.4 Hybrid coatings containing RE compounds: sol-gel coatings modified by soluble RE inhibitors
    6. 8.5 Hybrid coatings containing RE compounds: RE inhibitors in nanoreservoirs
    7. 8.6 Hybrid coatings containing RE compounds: nanocarriers with immobilized RE-based inhibitors
    8. 8.7 RE-doped organic coatings
    9. 8.8 RE-containing metallic coatings
    10. 8.9 Summary
    11. 8.10 References
  14. 9. Tunable multifunctional corrosion-resistant metallic coatings containing rare earth elements
    1. Abstract:
    2. 9.1 Introduction
    3. 9.2 Corrosion protection mechanisms by passive films and coatings
    4. 9.3 Sacrificial anode-based cathodic protection versus active corrosion inhibition
    5. 9.4 Long-range corrosion protection of coating defects
    6. 9.5 One vision for new coatings with multiple, tunable functions
    7. 9.6 Materials and fabrication of tunable amorphous metallic coatings
    8. 9.7 Tunable barrier properties in multifunctional amorphous Al-TM-RE coatings
    9. 9.8 Tunable sacrificial anode-based cathodic protection in Al-TM-RE coatings
    10. 9.9 On-demand active-corrosion inhibition based on tunable Al-TM-RE alloy coatings
    11. 9.10 Summary
    12. 9.11 Acknowledgements
    13. 9.12 References
  15. 10. The cost and availability of rare earth-based corrosion inhibitors
    1. Abstract:
    2. 10.1 Introduction
    3. 10.2 The rare earth elements
    4. 10.3 Abundance
    5. 10.4 Mineralogy and mining
    6. 10.5 Rare earth availability
    7. 10.6 Uses
    8. 10.7 Potential demand for rare earth and other inhibitors
    9. 10.8 Health and environment issues
    10. 10.9 Summary
    11. 10.10 References
  16. Index

Product information

  • Title: Rare Earth-Based Corrosion Inhibitors
  • Author(s): Maria Forsyth, Bruce Hinton
  • Release date: August 2014
  • Publisher(s): Woodhead Publishing
  • ISBN: 9780857093585