Tsai Du-Cheng, Chang Zue-Chin, Chen Erh-Chiang, Huang Yen-Lin, Jiang Yun-Chen, Shieu Fuh-Sheng
Department of Materials Science and Engineering, National Chung Hsing University, Taichung 402202, Taiwan.
Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 411030, Taiwan.
Materials (Basel). 2023 Apr 23;16(9):3317. doi: 10.3390/ma16093317.
This study focuses on modifying the surface of an AA 5052-H32 aluminum alloy using plasma treatment. Discharge power, exposure time, and working gas were adjusted as process parameters to improve the adhesion between the aluminum alloy and glass fiber-reinforced thermoplastic (GFRTP) polycarbonate composite. The surface composition and morphology of the aluminum alloy sheet were analyzed by X-ray photoelectron spectroscopy and scanning electron microscopy, and surface roughness and wettability were evaluated using a surface roughness-measuring instrument and contact angle goniometry, respectively. The bonding performance of GFRTP/aluminum alloy was also assessed. The surface of the aluminum alloy was subjected to chemical treatment prior to plasma treatment. The results revealed that nitrogen plasma treatment led to a substantial increase (25%) in bonding strength due to the synergistic effect of rough surface mechanical bonding and chemical bonding through functional groups between the aluminum alloy and GFRTP. However, the improvement in surface wettability by plasma treatment is time dependent and may gradually diminish over time due to the re-adsorption of hydrocarbon contamination from the surrounding air.
本研究聚焦于通过等离子体处理对AA 5052-H32铝合金表面进行改性。将放电功率、暴露时间和工作气体作为工艺参数进行调整，以提高铝合金与玻璃纤维增强热塑性塑料（GFRTP）聚碳酸酯复合材料之间的附着力。通过X射线光电子能谱和扫描电子显微镜分析铝合金板材的表面成分和形貌，并分别使用表面粗糙度测量仪和接触角测量仪评估表面粗糙度和润湿性。还评估了GFRTP/铝合金的粘结性能。在进行等离子体处理之前，对铝合金表面进行了化学处理。结果表明，由于粗糙表面机械结合以及铝合金与GFRTP之间通过官能团形成的化学键合的协同作用，氮等离子体处理使粘结强度大幅提高（25%）。然而，等离子体处理对表面润湿性的改善与时间有关，由于周围空气中碳氢化合物污染物的再吸附，其可能会随时间逐渐减弱。
