Surface Coatings for Protection Against Wear covers coating characterisation and property evaluation relevant to wear resistance with an emphasis on mechanical testing of coatings and discusses the various methods used to deposit wear resistance coatings.

Features:

• Describes wear resistant coatings produced by various deposition routes, highlighting the microstructure property relationship in these coatings
• Includes coatings and hardfacings produced from welding processes and modern developments such as friction surfacing and pulsed electrode surfacing techniques
• Concludes with coverage of future trends in both coating materials and coating processes

Contents

Understanding Surface Wear in Engineering Materials

• Role of Stress Distributions in Wear
• Wear in Tribo-Contacts
• Stress Fields for Coated Systems

Mechanic Testing of Coatings

• Thickness
• Fracture and Adhesion Testing
• Scratch Testing
• Instrumented Indentation Testing
• Impact Excitation
• Surface Acoustic Wave Spectroscopy
• Residual Stress Measurement

The Range of Surface Coating Methods

• Basic Classification of Processes Employed for Coating
• Processes: Coating Deposited onto the Substrate
• Processes: Coatings Formed by Reactions Involving the Substrate
• Comparison of the Methods

Chemical Vapour Deposition Methods For Coating Against Wear

• The CVD Process
• Factors Affecting the Coating Characteristics
• Advantages and Disadvantages of CVD
• Plasma Assisted CVD

Physical Vapour Deposition Methods for Protection Against Wear

• Fundamentals of PVD
• Commercial PVD Processes
• Coatings for Wear Resistance

Electroless Plating for Protection Against Wear

• Electrolyte Composition and Operating Conditions
• Characteristics of Electroless Deposits

Electroplating for Protection Against Wear

• Electrodeposited Metallic Coatings
• Electrodeposited Composite Coatings
• Anodised Coatings in Light Metals

Thermal Spraying Methods for Protection Against Wear

• Thermal Spray Process Fundamentals
• Coating Structures
• Post Spray Treatments
• Structure-Property Relationships
• Industrial Applications
• Unsuccessful Coatings and Applications

Welding Surface Treatment Methods for Protection Against Wear

• Welding Processes Suitable for Hardfacing
• Nature of the Deposit
• Hardfacing Materials
• Hardfacing Alloy Selection
• Hardfacing Process Selection
• Distortion and Residual Stresses
• Successful and Unsuccessful Applications

Laser Surface Treatment Methods for Protection Against Wear

• Operation Principles
• Lasers for LSE
• Advantages and Limitations of LSE
• Applications on Ferrous Alloys
• Applications on Aluminium Alloys
• Applications on Titanium Alloys

Future Trends in Surface Coating for Protection Against Wear

• Coating Materials
• Coating Architectures
• Smart Systems
• New Processes

Index

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