Currently, Chang-Yu Li is a master’s student in the Department of Mechanical Engineering at National Pingtung University of Science and Technology, specializing in the study of low-pressure gas nitriding and its effects on the microstructural evolution and wear resistance of Ti-6Al-4V alloys. This research integrates materials science and mechanical engineering by applying surface modification techniques to titanium alloys and systematically examining the relationship between nitriding parameters, microstructural changes, and performance enhancement. The work involves the characterization of nitrided layers through thickness measurements, X-ray diffraction analysis, and scanning electron microscopy, as well as mechanical evaluation via hardness and wear tests. The goal is to establish a comprehensive understanding of nitriding mechanisms and their influence on alloy properties, providing practical insights for applications in aerospace, biomedical implants, and precision manufacturing industries. Beyond the core research, the training has developed expertise in material surface engineering, microstructural characterization, and mechanical property evaluation, with active engagement in academic discussions and research projects. These experiences not only strengthen technical knowledge but also foster the ability to connect scientific findings with real-world engineering challenges, thereby contributing to the advancement of advanced materials engineering.