The influence of metal surface topography on ablation behavior during intense pulsed ion beam irradiation

As a flash heat source, intense pulse ion beam (IPIB) has extensive applications in material surface modification. The ablation effect during IPIB irradiation on target can impact the results of material modification. Therefore, the understanding of ablation mechanism is of great significance for IP...

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Bibliographic Details
Published in:Surface & coatings technology 2020-04, Vol.388, p.125599-6, Article 125599
Main Authors: Zhang, Jie, Zhong, Haowen, Shen, Jie, Yu, Xiao, Yan, Sha, Le, Xiaoyun
Format: Article
Language:English
Subjects:
Ablation
Ablation mass
Computer simulation
Conduction heating
Conduction model
Conductive heat transfer
Finite element method
Intense pulsed ion beam
Ion beams
Irradiation
Metal surfaces
Monte Carlo simulation
Surface roughness
Surface topography
Topography
Zinc
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Summary:As a flash heat source, intense pulse ion beam (IPIB) has extensive applications in material surface modification. The ablation effect during IPIB irradiation on target can impact the results of material modification. Therefore, the understanding of ablation mechanism is of great significance for IPIB application. In this work, to investigate the influence mechanism of surface topography on ablation behavior, pure zinc targets with different surface roughness were bombarded by IPIB with various energy densities at TEMP-4M accelerator. The experiments results showed that the ablation mass increased with the surface roughness increasing. Combining Monte Carlo method and finite element method, a heat conduction model was constructed to describe the ablation process of zinc target with different surface roughness. The simulation results agreed with the experiments, and the mechanism of ablation influenced by the surface topography was proposed. •Ablation mass of metal increased with the surface roughness increasing during IPIB irradiation.•Thermal effect of IPIB irradiation is more concentrated at convex tips on rougher target surface.•Ablation mass is determined by the convex angle of surface undulating.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2020.125599