纳秒脉冲激光烧蚀非晶合金的研究进展

Advances on Nanosecond Pulse Laser Ablation of Amorphous Alloys

非晶合金是一类原子排列处于长程无序状态的新型结构材料,具有一系列优异的力学和物理性能,从而有望应用于国防、空天等关键领域.在这些领域的应用中,非晶合金易受到强激光或空间等离子体的作用而失效.同时,非晶合金在高能激光辐照下的结构响应本身也极具科学意义.因此,近年来这方面的研究得到了越来越多的关注.论文将重点关注纳秒脉冲激光对非晶合金在大气和水环境下的烧蚀,针对熔化、流体动力学失稳、爆炸沸腾、气泡动力学等烧蚀过程中的几种典型现象,简要介绍相关的实验和理论研究进展.最后,对未来值得进一步研究的方向进行了概述.

Amorphous alloys are a new class of structural materials with long range atomic disorder.These alloys possess a series of superior mechanical and physical properties,and can be applied in fields of defense,airspace and so on.However,in these applications,amorphous alloys are prone to fail when exposed to high-energy laser or space plasma.Meanwhile,their structure response to high-energy laser irradiation is also of scientific significance.Therefore,the laser ablation of amorphous alloys has attracted increasing attention in recent years.This short review focuses on the nanosecond pulse laser ablation of amorphous alloys in atmosphere and water environments.We present relevant experimental and theoretical progresses about typical phenomena in ablation,such as melting,hydrodynamic instability,explosive boiling,bubble dynamics and so on.The review ends with the key aspects that deserve further investigations.