Research Status and Prospect of Laser Assisted Cold Spraying

Laser assisted cold spraying（LACS）, as an emerging cold spraying technology（CS）, is a high performance coating preparation technology which introduces a laser head and an infrared thermometer on the basis of CS to soften the substrate and powder by controlling the laser heating temperature. It not only retains the advantages of CS, such as no metallurgical process caused by melting and solidification, and unchanged feedstock composition; but also it expands the selection range of particle and substrate materials, and improves the performance of the deposits. This article introduces the technical principle and main process parameters of LACS, summarizes the research status of various scientific research institutions in China and abroad, and finally prospects the future development of LACS.