宇航材料工艺2024，Vol.54Issue(4)：126-130,5.DOI:10.12044/j.issn.1007-2330.2024.04.018
碳化硅陶瓷脉冲激光加工改性表面特征研究
Study on Modified Surface Characteristics of Silicon Carbide Ceramics Processed by Pulsed Laser
摘要
Abstract
The silicon carbide ceramics were processed by pulsed laser.The influence of laser process parameters such as laser power,scanning times and spot overlap rate on the modified surface characteristics of the workpiece was investigated by single factor experiment.The experimental results show that when the laser power is small,the workpiece surface forms periodic undulation groove and broken pits are randomly distributed.When the laser power gradually increases,the workpiece surface gradually appears thermal cracks.The surface roughness first decreases and then increases with the increase of laser power.When the scanning times are low,the structure formed on the workpiece surface is shallow and loose.With the increase of laser scanning times,the structure formed on the workpiece surface is uneven.The surface roughness first decreases and then increases with the increase of scanning times.At low spot overlap rate,the workpiece surface groove is shallow and the overall surface undulation is weak.When the spot overlap rate increases,the surface grooves become deeper and the holes appear.The surface roughness increases with the increase of spot overlap rate.关键词
碳化硅陶瓷/脉冲激光/改性/表面形貌Key words
Silicon carbide ceramics/Pulaser laser/Modification/Surface morphology分类
信息技术与安全科学引用本文复制引用
刘伟,顾浩,唐都波,刘顺..碳化硅陶瓷脉冲激光加工改性表面特征研究[J].宇航材料工艺,2024,54(4):126-130,5.基金项目
湖南省自然科学基金(2022JJ5178) （2022JJ5178）
湖南省教育厅科学研究(20A202) （20A202）
难加工材料高效精密加工湖南省重点实验室开放基金(E21853) （E21853）
