激光粉末床熔合AlSi10Mg零件的化学镀金、银和铜的研究进展

D. Ashkenazi, A. Inberg, Y. Shacham-Diamand, A. Stern
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引用次数: 13

摘要

增材制造(AM)的革命性技术带来了新的机遇和挑战。它们允许低成本制造具有复杂几何形状的零件,并且可以专门定制产品的短时间上市。增材制造的零件通常需要在打印后进行表面改性。本研究旨在回顾3d打印AlSi10Mg零件的新型环保表面处理工艺,即化学沉积金、银和金银合金(如银电解液),并提出一种适合有效金属化的完整工艺方法。这种沉积技术是一种简单、低成本的方法,可以实现导电材料和绝缘材料的金属化。采用增材制造激光粉末床熔融(AM-LPBF)工艺制备AlSi10Mg零件。金、银及其合金因其美观的外观、良好的耐腐蚀性以及优异的导电性和导热性而被选为涂层。金属在80和90°C下沉积在3d打印的圆盘状试样上,使用专用的表面活化方法,对打印的AlSi10Mg进行特殊的功能化,以确保均匀的催化表面,使沉积的金属与衬底具有良好的附着力。采用各种方法检测涂层质量,包括光学显微镜、光学轮廓仪、XRD、x射线荧光、sem -能量色散光谱(EDS)、聚焦离子束(FIB)-SEM和XPS分析。结果表明,所开发的涂层质量令人满意,所建议的表面处理工艺可用于许多增材制造产品和应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Gold, Silver, and Electrum Electroless Plating on Additively Manufactured Laser Powder-Bed Fusion AlSi10Mg Parts: A Review
Additive manufacturing (AM) revolutionary technologies open new opportunities and challenges. They allow low-cost manufacturing of parts with complex geometries and short time-to-market of products that can be exclusively customized. Additive manufactured parts often need post-printing surface modification. This study aims to review novel environmental-friendly surface finishing process of 3D-printed AlSi10Mg parts by electroless deposition of gold, silver, and gold–silver alloy (e.g., electrum) and to propose a full process methodology suitable for effective metallization. This deposition technique is simple and low cost method, allowing the metallization of both conductive and insulating materials. The AlSi10Mg parts were produced by the additive manufacturing laser powder bed fusion (AM-LPBF) process. Gold, silver, and their alloys were chosen as coatings due to their esthetic appearance, good corrosion resistance, and excellent electrical and thermal conductivity. The metals were deposited on 3D-printed disk-shaped specimens at 80 and 90 °C using a dedicated surface activation method where special functionalization of the printed AlSi10Mg was performed to assure a uniform catalytic surface yielding a good adhesion of the deposited metal to the substrate. Various methods were used to examine the coating quality, including light microscopy, optical profilometry, XRD, X-ray fluorescence, SEM–energy-dispersive spectroscopy (EDS), focused ion beam (FIB)-SEM, and XPS analyses. The results indicate that the developed coatings yield satisfactory quality, and the suggested surface finishing process can be used for many AM products and applications.
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