A thermal model for nanosecond pulsed laser ablation of aluminum
In order to simulate the nanosecond pulsed laser ablation of aluminum, a novel model was presented for the target ablation and plume expansion. The simulation of the target ablation was based on one-dimensional heat conduction, taking into account temperature dependent material properties, phase tra...
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Online Access: | http://dx.doi.org/10.1063/1.4995972 |
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doaj-8ed3825fb0a4414fa4c663a7c3b4e75c2020-11-24T22:17:53ZengAIP Publishing LLCAIP Advances2158-32262017-07-0177075010075010-1510.1063/1.4995972048707ADVA thermal model for nanosecond pulsed laser ablation of aluminumYu Zhang0Daixian Zhang1Jianjun Wu2Zhen He3Xiong Deng4College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, ChinaChina Aerodynamics Research and Development Center, Mianyang 621000, ChinaCollege of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, ChinaCollege of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, ChinaCollege of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, ChinaIn order to simulate the nanosecond pulsed laser ablation of aluminum, a novel model was presented for the target ablation and plume expansion. The simulation of the target ablation was based on one-dimensional heat conduction, taking into account temperature dependent material properties, phase transition, dielectric transition and phase explosion. While the simulation of the plume expansion was based on one-dimensional gas-dynamical equation, taking into account ionization, plume absorption and shielding. By coupling the calculations of the target ablation and plume expansion, the characteristics of the target and plume were obtained. And the calculated results were in good agreement with the experimental data, in terms of ablation threshold and depth within the fluence range of the tested laser. Subsequently, investigations were carried out to analyze the mechanisms of nanosecond pulsed laser ablation. The calculated results showed that the maximum surface temperature remained at about 90% of the critical temperature (0.9Tc) due to phase explosion. Moreover, the plume shielding has significant effects on the laser ablation, and the plume shielding proportion increase as the laser fluence increasing. The ambient pressure belows 100 Pa is more suitable for laser ablation, which can obtained larger ablation depth.http://dx.doi.org/10.1063/1.4995972 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yu Zhang Daixian Zhang Jianjun Wu Zhen He Xiong Deng |
spellingShingle |
Yu Zhang Daixian Zhang Jianjun Wu Zhen He Xiong Deng A thermal model for nanosecond pulsed laser ablation of aluminum AIP Advances |
author_facet |
Yu Zhang Daixian Zhang Jianjun Wu Zhen He Xiong Deng |
author_sort |
Yu Zhang |
title |
A thermal model for nanosecond pulsed laser ablation of aluminum |
title_short |
A thermal model for nanosecond pulsed laser ablation of aluminum |
title_full |
A thermal model for nanosecond pulsed laser ablation of aluminum |
title_fullStr |
A thermal model for nanosecond pulsed laser ablation of aluminum |
title_full_unstemmed |
A thermal model for nanosecond pulsed laser ablation of aluminum |
title_sort |
thermal model for nanosecond pulsed laser ablation of aluminum |
publisher |
AIP Publishing LLC |
series |
AIP Advances |
issn |
2158-3226 |
publishDate |
2017-07-01 |
description |
In order to simulate the nanosecond pulsed laser ablation of aluminum, a novel model was presented for the target ablation and plume expansion. The simulation of the target ablation was based on one-dimensional heat conduction, taking into account temperature dependent material properties, phase transition, dielectric transition and phase explosion. While the simulation of the plume expansion was based on one-dimensional gas-dynamical equation, taking into account ionization, plume absorption and shielding. By coupling the calculations of the target ablation and plume expansion, the characteristics of the target and plume were obtained. And the calculated results were in good agreement with the experimental data, in terms of ablation threshold and depth within the fluence range of the tested laser. Subsequently, investigations were carried out to analyze the mechanisms of nanosecond pulsed laser ablation. The calculated results showed that the maximum surface temperature remained at about 90% of the critical temperature (0.9Tc) due to phase explosion. Moreover, the plume shielding has significant effects on the laser ablation, and the plume shielding proportion increase as the laser fluence increasing. The ambient pressure belows 100 Pa is more suitable for laser ablation, which can obtained larger ablation depth. |
url |
http://dx.doi.org/10.1063/1.4995972 |
work_keys_str_mv |
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