Advanced Thermally Assisted Surface Engineering Processes

Surfaces are the bounding faces of solids. The interaction of component surface with the working environment results in wear and corrosion. Estimated loss due to wear and corrosion in the USA is around $500 billion. Engineered surfaces are the key to the reduction of losses due to wear and corrosion. There are surface engineering books on specific processes such as thermal spraying and vapor phase deposition or about specific heat sources such as plasma or laser. However, there are few, if any, covering the whole range of advanced surface engineering processes. Advanced Thermally Assisted Surface Engineering Processes has been structured to provide assistance and guidance to the engineers, researchers and students in choosing the right process from the galaxy of newer surface engineering techniques using advanced heat sources.

Surface Engineering: Processes and Applications: This volume covers both innovative and basic methods of surface engineering for improved surface properties.

A concise review of the most up to date coatings and surface treatments, their applications, principles of operation, strengths and weaknesses.

This book is intended to help engineers analyze service condition and potential mechanisms of surface degradation. This will enable engineers select suitable materials for improved service-life and performance of engineering components. The book comprises 7 chapters, and is well illustrated with schematics, photographs, microstructure, XRD patterns, EDAX mapping, and technical data tables. The book focuses on the influence of materials and methods of surface engineering on structure, properties, and wear-performance of engineering components. It begins with the need to study the subject of surface engineering, scope of surface engineering, and classification of techniques of surface engineering. The book covers conventional material system (steel, cast iron, stellite, WC-Co, PCDs, etc.) and new materials like multilayer structures, functionally gradient materials (FGMs), intermetallic barrier coatings, and thermal barrier coating. The book covers most conventional as well as advanced surface engineering techniques, such as burnishing, shot peening, flame and induction hardening, laser and electron beam hardening, plasma and TIG melting, carburizing, nitriding, cyaniding, boronizing, vanadizing, ion implantation, laser alloying, chemical vapor deposition, PE chemical vapor deposition, physical vapor deposition, weld overlays, laser cladding, hot dip galvanizing, hot dip lead tin coating, hot dip aluminizing, hot dip chromizing, electroplating, electroless plating (Ni-P and Ni-B), mechanical plating, roll bonding, explosive bonding, and hot isostatic. The book also includes an introductory chapter on friction-stir processing of aluminum and titanium alloys. Further, it discusses studies on structure, mechanical and wear properties of weld surfacing, flame spray coating, HVOF sprayed coating, laser cladding of ferrous metals, nickel and cobalt based alloys and their composites in as-sprayed and heat-treated conditions. The book provides a comprehensive overview of various destructive and nondestructive techniques used for characterization of engineered surfaces. The materials in the book will be useful to undergraduate and graduate students. In addition, the contents of this book can also be used for professional development courses for practicing engineers.

Today's shortages of resources make the search for wear and corrosion resistant materials one of the most important tasks of the next century. Since the surface of a material is the location where any interaction occurs, it is that there the hardest requirements on the material are imposed: to be wear resistant for tools and bearings; to be corrosion resistant for turbine blades and tubes in the petrochemical industry; to be antireflecting for solar cells; to be decorative for architectural panels and to combine several of these properties in other applications. Surface engineering is the general term that incorporates all the techniques by which a surface modification can be accomplished. These techniques include both coating and modification of the surface by ion implantation and laser beam melting. In recent years a continuously growing number of these techniques were developed to the extent that it became more and more difficult to maintain an overlook and to understand which of these highly differentiated techniques might be applied to resolve a given surface engineering problem. A similar development is also occuring for surface characterization techniques. This volume contains contributions from renowned scientists and engineers to the Eurocourse the aim of which was to inform about the various techniques and to give a comprehensive survey of the latest development on this subject.

Surface Engineering , by definition, is the synergistic combination of bulk and surface materials to yield a system with properties that neither is capable of providing on its own . In the modern industrial world, this approach is being increasingly adopted to achieve increased reliability and enhanced performance of degradation-prone industrial components. It encompasses coating and surface treatment processes, capable of altering surface properties to provide improved resistance against deterioration due to mechanisms such as corrosion, oxidation, wear or failure under an excessive heat load. The wide spectrum of surface technologies accessible to design engineers today include electro-deposition, diffusion coatings, thermal spraying, physical and chemical vapour deposition, sol-gel coatings, plasma and laser assisted surface modification etc. Advances in the field of coatings technology in recent years have made it possible to realize the immense potential of surface engineering in diverse industry segments. Although surface engineering is of growing industrial relevance globally, the industry in the developing countries is yet to exploit the state-of-the-art surface modification technologies to their full potential and ongoing R&D efforts in this area are also far short of what this important field demands. The present publication is a follow up of an 8-day International Training Course - cum - Business Opportunities Workshop jointly organised by the NAM S&T Centre and the International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI) at Hyderabad, India during 19-26 July 2005. It comprises papers presented during this event and includes articles authored by some eminent scientists actively working in this field. The publication establishes a distinct relation of surface engineering advancement with industrial development and resultant economic gains and prosperity of the masses, and the information present herein is expected to catalyze the awareness on this subject in the minds of policy makers, technology managers and industries in the developing countries.