Coeval Cold Spray Additive Manufacturing Variances and Innovative Contributions

Abstract

Tremendous attention has been given to the cold spray process, even more today with the emergence of additive manufacturing, worldwide. Several inventions related to the cold spray technology have been patented for over a century and mostly since a couple of decades. But the cold spray technology knows a period of great innovations due to recent and current substantial explorations. Various technological solutions have been developed. The technical dimension, and particularly in terms of manufacturing method, has also always been a major genesis of progresses and novelties. This chapter is a technological survey of the cold spray additive manufacturing and reports variant methods and innovative contributions. Through an introduction section, the chapter begins by a depiction of cold spraying (CS) that addresses a review of distinctive deposition methods based on a capability variance. Then, a section reports a brief chronology of cold spraying towards the generic modern deposition method as it stands nowadays. A concise survey of material aspect is addressed, this showing the current capability of cold spraying prior to a brief overview of various deposit possibilities and applications. Stand-alone sections will be focused on modern variances of cold spraying, viz. the low-pressure cold spray method bringing new benefits and the very-low-pressure cold spray manufacturing for the development of advanced technological solutions. Since combination of cold spray with another process for various innovations represents a new added value, such approach merits to be highlighted among modern trends of the cold spray use. For that purpose, this book chapter also addresses an overview of hybrid combinations based on the cold spray technology, including novel hybrid variant for 3D submicron architecturation and laser-assisted cold spray method that enables positive thermal effect, viz. improved deposition and increased deposit features. Combining high-temperature deposition and high kinematic conditions, a new cold spray variant, denoted pulse gas dynamic spraying capable of thermal improvement is also reported. Together, all these achievements reveal a great flexibility of the cold spray additive manufacturing in terms of material possibilities, deposition methods and technological solutions.