This book has been written with the aim of demonstrating the power of using modern techniques of physical analysis for studying the complex interactions that often occur between the contacting surfaces of tribo-systems, that is, systems involving relative motion between the various elements.

It is an interdisciplinary book, which should be of interest to tribologists whose major discipline is physics, chemistry, metallurgy or any branch of engineering involved with moving parts. Obviously, mechanical and production engineers will have more interest in tribology than (say) civil engineers or electrical engineers, but even with these disciplines, tribological problems can occur for example traction between asphalt and rubber and the wear of carbon brushes.

The book aims to be understandable by readers at all levels of technical competence with an interest in tribology. It should be of special interest to those final year undergraduate students intending to make a career in the research and development laboratories associated with the oil companies, the electricity generating industry, the aerospace companies, the steel-making and steel-forming enterprises, the automotive and diesel engine manufacturers, the railways, or any other industrial concern heavily dependent upon good tribological knowledge and practice.

Even those undergraduates destined for the production side of these industries, should find the introductory chapter on tribology useful background reading, especially if they are involved with design.