材料科学
烧蚀
光热治疗
聚酰亚胺
激光烧蚀
辐照
紫外线
激光器
拉曼光谱
光热效应
傅里叶变换红外光谱
分析化学(期刊)
激光功率缩放
光学
复合材料
光电子学
纳米技术
化学
物理
图层(电子)
色谱法
航空航天工程
核物理学
工程类
作者
Tian Zhang,Congyi Wu,Youmin Rong,Min Li,Yu Huang,Guojun Zhang
标识
DOI:10.1080/10426914.2021.2001505
摘要
A research focused on ablation characteristics of polyimide (PI) film induced by a nanosecond ultraviolet (UV) laser was presented. The effect of varying the laser power (P), scanning speed (S) and their combined impact – linear laser energy density (LLED) on the ablation behavior on PI was investigated. The characteristics of both photothermal and photochemical ablation regimes were observed, which extremely depend on LLED. A relatively narrow interference ablation region (~43 μm) was observed at low LLED (< 3 J/m) and a typical photothermal ablation area (~101 μm) was observed at high LLED (> 6 J/m) accompanied with thermal expansion and cracks. The surface morphology and composition was analyzed using SEM, EDX, and Raman spectroscopy. Then through TGA-FTIR and Py-GC–MS technique, the composition of the residue and the decomposition process were discussed in detail. The experimental results and developed mechanism offer some insights into the characteristics of UV laser ablation of PI film.
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