Study of Micro/Nano Structuring and Mechanical Properties of KrF Excimer Laser Irradiated Al for Aerospace Industry and Surface Engineering Applications.
Study of Micro/Nano Structuring and Mechanical Properties of KrF Excimer Laser Irradiated Al for Aerospace Industry and Surface Engineering Applications.
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DOI：
10.3390/ma14133671
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发表时间：
2021-06-30
期刊：
影响因子：
--
通讯作者：
Begum N
中科院分区：
文献类型：
--
作者：
Umm-I-Kalsoom;Ali N;Bashir S;Alshehri AM;Begum N
KrF准分子激光辐照铝(Al)的微/纳米结构与激光引起的结构和力学变化有关。揭示了非反应Ar(Ar)和反应氧(O2)环境对纳秒脉冲激光烧蚀铝(Al)表面、结构和力学性能的影响。采用KrF准分子激光器，脉冲宽度20 ns，中心波长248 nm，重复率10%。在100Torr的非反应(Ar)和反应(O2)环境中，分别对0.86J·cm、1.13J·cm和1.27J·cm−2激光照射靶材进行了曝光。采用扫描电子显微镜(SEM)、原子力显微镜(AFM)、X射线能谱(EDS)、X射线衍射仪(X射线衍射仪)、拉曼光谱和纳米硬度计等测试技术对辐照后靶材的表面形貌、化学成分、结晶度和纳米硬度等进行了表征。气体的性质(反应性或非反应性)和压力对材料的改性起着重要的作用。在本研究中，在两种气氛(Ar，O2)中，Al表面烧蚀后的表面结构、化学成分、残余应力的变化与硬度的变化之间存在着很强的相关性。在反应环境(O2)的情况下，激光能量的沉积和环境气体的等离子体物种之间的相互作用增强了化学反应活性，导致形成高机械强度的铝氧化物(AlO，Al_2O_3)。这使得它在工艺和航空航天工业领域以及表面工程中都很有用。
Micro/nano structuring of KrF Excimer laser-irradiated Aluminum (Al) has been correlated with laser-produced structural and mechanical changes. The effect of non-reactive Argon (Ar) and reactive Oxygen (O2) environments on the surface, structural and mechanical characteristics of nano-second pulsed laser-ablated Aluminum (Al) has been revealed. KrF Excimer laser with pulse duration 20 ns, central wavelength of 248 nm and repetition rate of was utilized for this purpose. Exposure of targets has been carried out for 0.86, 1, 1.13 and 1.27 J·cm−2 laser fluences in non-reactive (Ar) and reactive (O2) ambient environments at a pressure of 100 torr. A variety of characteristics of the irradiated targets like the morphology of the surface, chemical composition, crystallinity and nano hardness were investigated by using Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM), Energy Dispersive X-ray Spectroscopy (EDS), X-ray Diffractometer (XRD), Raman spectroscopy and Nanohardness tester techniques, respectively. The nature (reactive or non-reactive) and pressure of gas played an important role in modification of materials. In this study, a strong correlation is observed between the surface structuring, chemical composition, residual stress variation and the variation in hardness of Al surface after ablation in both ambient (Ar, O2). In the case of reactive environment (O2), the interplay among the deposition of laser energy and species of plasma of ambient gas enhances chemical reactivity, which causes the formation of oxides of aluminum (AlO, Al2O3) with high mechanical strength. That makes it useful in the field of process and aerospace industry as well as in surface engineering.
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影响因子：
5
作者：
Ali, Nisar;Bashir, Shazia;Hussain, Tousif
通讯作者：
Hussain, Tousif
影响因子：
3.2
作者：
Chen, ZY;Bleiner, D;Bogaerts, A
通讯作者：
Bogaerts, A
DOI：
10.1016/s0263-4368(98)00063-8
发表时间：
1999-01-01
影响因子：
3.6
作者：
Agarwal, A;Dahotre, NB
通讯作者：
Dahotre, NB
影响因子：
3.2
作者：
Ang, LK;Lau, YY;Kovaleski, SD
通讯作者：
Kovaleski, SD
DOI：
10.1016/j.mseb.2006.08.042
发表时间：
2006-11-25
期刊：
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
影响因子：
--
作者：
Balchev, I.;Minkovski, N.;Sabotinov, N.
通讯作者：
Sabotinov, N.