冷喷涂增材制造技术研究现状及应用与挑战

Cold spray additive manufacturing technology is a solid-state additive manufacturing method that relies on the plastic deformation of powder particles to form bonds. The additive components have almost no defects such as oxidation, phase transformation, grain growth, cracks, etc. The lower deposition temperature has little effect on the heat of the matrix, and has the advantag es of high additive efficiency and the manufacture of large components. It has attracted the attention of many national research teams a nd is recognized as a powerful and useful additive manufacturing and additive repair technology. In view of the increasing attenti on of scholars and industry in various countries to the cold spraying additive manufacturing technology, this paper attempted to summarize t he microstructure and properties of typical cold spraying deposits (Cu, Al, Ti, Ta and other materials) on the basis of describing the cold spraying equipment, with emphasis on the application and new progress of cold spraying additive manufacturing technology in t he field of national defense. At the same time, the challenges of cold spraying additive manufacturing technology were also pointed out. Finally, the remaining problems and development direction of cold spraying additive manufacturing technology were prospected.