Additive manufacturing

a quintessential disruptive manufacturing technology

empowers the production of intricate structures that are arduous to fabricate via traditional manufacturing approaches. It achieves this through “bottom-up” material accumulation. Cold spraying additive manufacturing technology

characterized by the high-speed collision deposition of solid-state metal powder

showcases remarkable technical advantages and application potential. This paper comprehensively deliberates on the concept

evolution

technological merits

and challenges of cold spraying additive manufacturing. Special emphasis is placed on its typical applications in the repair and remanufacturing of damaged components. The research reveals that cold spraying additive manufacturing technology presents benefits such as high deposition efficiency

strong bonding strength

and excellent coating density. Notably

it shows in the preparation of high-strength and high-plasticity deposition bodies

as well as the repair of complex components. Nevertheless

the technology still grapples with several challenges. These include inadequate deposition plasticity and toughness

a propensity for thin-walled components to deform and crack

and the relatively short lifespan of the nozzle. This paper synthesizes the research advancements of cold spraying additive manufacturing technology

pinpoints future development trends

and offers theoretical references and practical guidelines for the extensive application of this technology in aerospace

automotive manufacturing

and other sectors.