冷喷涂技术也称为气体动力喷涂 ,最初由前苏联在 2 0世纪 80年代中期发展 ,美国于 2 0世纪 90年代中期开始研究。其主要特点是 :喷射温度低于被喷射材料的熔化和软化温度 ;被喷射材料颗粒尺寸在 1～5 0μm范围 ;颗粒速度在 30 0～ 12 0 0 m/ s范围。普遍认为其冶金原理是高速闯 Cold spraying technology, also known as gas-powered spraying, was first developed in the mid-1980s by the former Soviet Union and by the United States in the mid-1990s. Its main features are as follows: the jetting temperature is lower than the melting and softening temperature of the material being jetted; the particle size of the jetted material is in the range of 1-500 μm; the particle velocity is in the range of 30 0-1200 m / s. It is generally believed that its metallurgical principle is high-speed break