Cold Spray (CS) is a deposition process, part of the thermal spray family. In this method, powder particles are accelerated at supersonic speed within a nozzle; impacts against a substrate material triggers a complex process, ultimately leading to consolidation and bonding. CS, in its modern form, has been around for approximately 30 years and has undergone through exciting and unprecedented developmental steps. In this article, we have summarized the key inventions and sub-inventions which pioneered the innovation aspect to the process that is known today, and the key breakthroughs related to the processing of materials CS is currently mastering. CS has not followed a liner path since its invention, but an evolution more similar to a hype cycle: high initial growth of expectations, followed by a decrease in interest and a renewed thrust pushed by a number of demonstrated industrial applications. The process interest is expected to continue (gently) to grow, alongside with further development of equipment and feedstock materials specific for CS processing. A number of current applications have been identified the areas that the process is likely to be the most disruptive in the medium-long term future have been laid down.

冷喷涂 (CS) 是一种沉积工艺，属于热喷涂系列。在该方法中，粉末颗粒在喷嘴内以超音速加速；对基材材料的冲击会引发复杂的过程，最终导致固结和粘合。现代形式的 CS 已经存在了大约 30 年，并经历了令人兴奋和前所未有的发展步骤。在本文中，我们总结了开创当今已知工艺创新的关键发明和子发明，以及目前正在掌握的与材料加工相关的关键突破。自发明以来，CS 并没有遵循线性路径，而是更类似于炒作周期的演变：预期的初始高增长，随后兴趣下降，并由许多已证实的工业应用推动新的推动力。随着针对 CS 加工的设备和原料的进一步开发，加工兴趣预计将继续（温和）增长。目前的许多应用程序已确定该过程在中长期未来可能最具破坏性的领域已经确定。