中国机械工程 ›› 2026, Vol. 37 ›› Issue (8): 2029-2037.DOI: 10.3969/j.issn.1004-132X.2026.08.022
林颖亮1,2, 陈晓晓2,3(
), 马晨斌2, 李奇2,4, 张文武2,3
收稿日期:2025-08-26
出版日期:2026-08-25
发布日期:2026-09-17
通讯作者:
陈晓晓
作者简介:林颖亮,男,2000年生,硕士研究生。研究方向为硬脆难加工材料激光加工。
基金资助:
LIN Yingliang1,2, CHEN Xiaoxiao2,3(
), MA Chenbin2, LI Qi2,4, ZHANG Wenwu2,3
Received:2025-08-26
Online:2026-08-25
Published:2026-09-17
Contact:
CHEN Xiaoxiao
摘要:
采用一种超声辅助透镜飞秒激光烧蚀新方法,通过控制聚焦透镜高频振动实现动态能量密度调制,系统探究了激光功率与超声功率对碳化硅陶瓷烧蚀三维形貌的影响。结果表明:超声辅助可周期性改变光斑直径与能量密度分布,有效抑制等离子体屏蔽效应;低激光功率(P≤5 W)时,高超声功率(50%~70%)会降低能量沉积速率,导致烧蚀深度减小;高激光功率(P≥13 W)时,70%超声功率可使烧蚀深度达129.46 μm,较无超声工况提高54%,且热影响区氧元素密度显著降低。
中图分类号:
林颖亮, 陈晓晓, 马晨斌, 李奇, 张文武. 碳化硅陶瓷超声辅助飞秒激光烧蚀机理与工艺研究[J]. 中国机械工程, 2026, 37(8): 2029-2037.
LIN Yingliang, CHEN Xiaoxiao, MA Chenbin, LI Qi, ZHANG Wenwu. Study on Ultrasonic-assisted Femtosecond Laser Ablation Mechanism and Process of Silicon Carbide Ceramics[J]. China Mechanical Engineering, 2026, 37(8): 2029-2037.
密度/ (g·cm3) | 弯曲强度/ MPa | 显微硬度/MPa | 热膨胀系数/ K | 热导率/ (W·m |
|---|---|---|---|---|
| 3.2 | 500 | 2500 | 4.2×10 | 60 |
表1 碳化硅陶瓷材料的性能参数
Tab.1 Performance parameters of silicon carbide ceramics
密度/ (g·cm3) | 弯曲强度/ MPa | 显微硬度/MPa | 热膨胀系数/ K | 热导率/ (W·m |
|---|---|---|---|---|
| 3.2 | 500 | 2500 | 4.2×10 | 60 |
| 参数 | 值 |
|---|---|
| 离焦量Z/mm | 0 |
| 激光重复频率F/kHz | 100 |
| 激光功率P/W | 3、5、7、9、11、13、15 |
| 烧蚀时间t/s | 5 |
| 超声功率(百分比)Pu/% | 0、30、50、70 |
| 超声频率Fu/kHz | 20 |
表2 超声辅助飞秒激光烧蚀的实验参数
Tab.2 Experimental parameters of ultrasonic-assisted femtosecond laser ablation
| 参数 | 值 |
|---|---|
| 离焦量Z/mm | 0 |
| 激光重复频率F/kHz | 100 |
| 激光功率P/W | 3、5、7、9、11、13、15 |
| 烧蚀时间t/s | 5 |
| 超声功率(百分比)Pu/% | 0、30、50、70 |
| 超声频率Fu/kHz | 20 |
| 变量符号 | 物理意义 | 单位 |
|---|---|---|
| λ | 脉冲激光波长 | nm |
| ω0 | 激光入射超声透镜前的束腰半径 | mm |
| f1 | 超声辅助聚焦透镜焦距 | mm |
| f2 | 场镜焦距 | mm |
| A | 超声透镜沿光轴振动的振幅 | μm |
| Fu | 超声透镜振动频率 | kHz |
| t | 时间变量 | s |
| z0 | 入射激光束腰到超声透镜的静态固定距离 | mm |
| Δz(t) | 超声振动引发的动态位移 | μm |
| ω1(t) | 超声透镜出射光束在静态焦平面处的瞬态 光斑半径 | μm |
| ωsurf(t) | 加工表面瞬时光斑半径 | μm |
| D(t) | 加工表面瞬时光斑直径 | μm |
| zR0 | 入射光束瑞利长度 | mm |
表3 动态能量密度分析相关符号和物理意义
Tab.3 Variables and their physical meanings related to dynamic energy density analysis
| 变量符号 | 物理意义 | 单位 |
|---|---|---|
| λ | 脉冲激光波长 | nm |
| ω0 | 激光入射超声透镜前的束腰半径 | mm |
| f1 | 超声辅助聚焦透镜焦距 | mm |
| f2 | 场镜焦距 | mm |
| A | 超声透镜沿光轴振动的振幅 | μm |
| Fu | 超声透镜振动频率 | kHz |
| t | 时间变量 | s |
| z0 | 入射激光束腰到超声透镜的静态固定距离 | mm |
| Δz(t) | 超声振动引发的动态位移 | μm |
| ω1(t) | 超声透镜出射光束在静态焦平面处的瞬态 光斑半径 | μm |
| ωsurf(t) | 加工表面瞬时光斑半径 | μm |
| D(t) | 加工表面瞬时光斑直径 | μm |
| zR0 | 入射光束瑞利长度 | mm |
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