ABSTRACT
The quest for decreasing the wastage during the production has paved the way for the invention of additive manufacturing (AM), however due to the melting of particles AM may not be suitable for all types of materials and repairing of any part is beyond the capability of current AM systems. On the other hand, cold spray, which started as a coating technique, has the ability to repair parts by depositing several mm layer thickness deposits without melting the feedstock. This feature makes it applicable to use as a coating/repair technique to deposit all types of metals. By employing the right thickness building strategy, one can build a complete part, which makes it a “manufacturing at need” kind of AM process where any part/repair can be done onsite. Since the process involves no melting, there is no need for combustibles/harmful gasses and there is no wastage of material. These features make cold spray additive manufacturing (CSAM) a sustainable and eco-friendly process. Through this chapter readers will be introduced to the history of cold spray, bonding mechanism, effect of process parameters and the post-processing involved in cold spray followed by strategies to make CSAM into a smart manufacturing system.
