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研究了在高压辅助气体作用下运用纳秒脉冲激光刻蚀SiC陶瓷颗粒增强Al基复合材料的可行性。结果表明,刻蚀深度随激光能量的增加而增大。由于刻蚀过程中发生了复杂的冶金反应,在刻蚀表面很难观察到独立的SiC颗粒。重凝层内Al、Si、C、O元素空间分布相对均匀,其厚度和表面粗糙度随激光能量的增加而增加,并呈饱和趋势。高压同轴气体的机械作用是材料蚀除的主要机制。
The feasibility of using nano-second pulsed laser etching SiC ceramic particles to reinforce Al matrix composites under the action of high pressure auxiliary gas was studied. The results show that the etching depth increases with the increase of laser energy. Due to the complicated metallurgical reactions that occur during etching, it is difficult to observe individual SiC particles on the etched surface. The spatial distribution of Al, Si, C, O elements in the heavy coagulation layer is relatively uniform, and its thickness and surface roughness increase with the increase of laser energy and show a tendency of saturation. The mechanical action of high pressure coaxial gas is the main mechanism of material erosion.