研究目的
The main objective of the present research work is to propose a suitable combination of laser fluence and nature of ambient gas at which maximum sputtering yield of laser-irradiated Mg-alloy can be achieved.
研究成果
The study concludes that laser fluence and the nature of ambient gas significantly affect the sputtering yield, surface modifications, and mechanical properties of Mg-alloy AZ91D. Optimal conditions for maximum sputtering yield and surface structuring are identified, which are beneficial for applications in thin film deposition, ion implantation, and material processing.
研究不足
The study is limited to the effects of laser fluence and ambient gas environment on Mg-alloy AZ91D. The findings may not be directly applicable to other materials or under different experimental conditions.
1：Experimental Design and Method Selection:
The study involves the use of Quartz Crystal Microbalance (QCM) to measure the sputtering yield of laser ablated Mg-alloy under different fluences and environments (Ar and O2). SEM, EDX, XRD, UV–vis spectroscopy, and Vickers Micro-hardness testing are employed to analyze surface, structural, and mechanical modifications.
2：2). SEM, EDX, XRD, UV–vis spectroscopy, and Vickers Micro-hardness testing are employed to analyze surface, structural, and mechanical modifications.
Sample Selection and Data Sources:
2. Sample Selection and Data Sources: Mg-alloy AZ91D samples are mechanically polished, grinded, and ultrasonically cleaned before laser irradiation.
3：List of Experimental Equipment and Materials:
Nd: YAG laser (532 nm, 6 ns), Quartz Crystal Microbalance (QCM 200), SEM (JEOL JSM-6480 LV), optical microscope (STM-6 Olympus), X′Pert PRO(MPD) X-ray diffractometer, Vickers hardness tester (Zwick/Roell ZHU-5030).
4：0).
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: Mg-alloy samples are exposed to 100 pulses at various fluences under Ar and O2 environments. Surface morphology, crater depth, compositional changes, and hardness are analyzed post-irradiation.
5：Data Analysis Methods:
The sputtering yield is calculated based on deposition rate measurements. Surface structures are analyzed via SEM, compositional changes via EDX and XRD, and hardness via Vickers Micro-hardness testing.
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