High Velocity Oxy-Fuel Spraying - Theory, Structure-Property Relationships and Applications

Description

High Velocity Oxy-Fuel (HVOF) Spraying is widely used now for many industrial applications and is probably the best among the thermal spray techniques for some specific needs, e.g., for deposition of the cement coatings. Both industry and research laboratories have a need to improve their understanding of the HVOF spray processing in order to develop the optimum conditions and effective control of HVOF spraying which enables production of the quality coatings. Addressing this need is the main objective of this book. This book covers the main aspects relating to fundamentals and applications of HVOF spraying. The first chapter deals with the basic methods of characterization of materials structure, which include optical microscopy, transmission electron microscopy and scanning electron microscopy. The issues related to powders for HVOF spraying (powder materials and methods of powder manufacturing and evaluation) are described in the second chapter. The third chapter is devoted to the methods of coating evaluation and includes valuation of the coating structure and properties. Content:• Front Matter • Preface • Table of Contents •Part I. HVOF Process Fundamentals• 1. Introduction 2. HVOF Spraying Systems 3. Powders for HVOF Spraying 4. Gas-Particle Interactions during Spraying •Part II. Coating Deposition 5. Splat Formation 6. Solidification of the Coating and Development of Coating Structure 7. Development of Substrate-Coating Adhesion •Part III. Evaluation of Coatings 8. Evaluation of Coatings •Part IV. Structure Property Relationships 9. WC-Co System 10. WC-Co-Cr System 11. Cr3C2-NiCr System 12. TiC-Ni System 13. Microstructure of Substrate Interfacial Region during Formation of Cermet Coatings 14. Metallic Systems 15. Ceramic, Polymer and Hydroxyapatite Systems •Part V. Applications and Case Studies 16. Applications 17. HVOF Spray Forming Subject Index