EAPSI: 3D Printing of Ceramic/Metal Composites for Aerospace and Automotive Applications

增材制造（AM），也被称为3D打印，一直是汽车和航空航天工业的研究焦点。金属增材制造的优势在于它能够生产高效和复杂的零件。然而，增材制造的主要缺点是缺乏传统方法提供的可重复性和机械完整性。在这个项目中，将研究在金属增材制造零件中嵌入传感器以监测机械性能变化的可行性。这项研究将与Hyonkee Sohn博士合作进行，他是韩国机械与材料研究所（KIMM）粉末床熔融金属打印组的项目经理，也是激光材料加工方面的知名专家。该合作伙伴关系将提供激光材料加工设备和由KIMM设计的原始金属3D打印机。最终，这将启动AM技术进步的全球努力。将铁电体和压电体等功能材料集成到金属增材制造部件中，将使原位监测的传感应用成为可能。尽管在金属衬底上沉积这种陶瓷很困难，但初步结果表明，使用工业标准的金属有机溶液沉积方法可以实现这一目标。在这项研究中，铁电薄膜将沉积在金属衬底上，并进一步评估其结构和电学性能。铁电体的典型材料包括：锆钛酸铅（PZT）、钛酸钡（BT）和钽酸铋锶（SBT）。至于衬底的选择材料，将考虑增材制造的Inconel 718， Ti-6Al-4V和17-4PH不锈钢。不同的陶瓷/金属组合将被评估为最佳的兼容性和性能。该奖项是由美国国家科学基金会（NSF）和韩国国立科学研究财团共同资助的东亚太平洋暑期研究所项目，旨在支持美国研究生的暑期研究。

Additive manufacturing (AM), also known as 3D printing, has been the focus of research in the automotive and aerospace industries. Metal AM is advantageous for its ability to produce efficient and complex parts. However, the major drawback of AM is the lack of reproducibility and mechanical integrity, which conventional methods offer. In this project, the feasibility of embedded sensors in metal AM parts in order to monitor variations in mechanical properties will be investigated. This research will be conducted in collaboration with Dr. Hyonkee Sohn, the project manager of the powder bed fusion metal printing group and a noted expert in laser materials processing, at the Korean Institute of Machinery and Materials (KIMM). This partnership will provide access to laser materials processing equipment and an original metal 3D printer designed by KIMM. Ultimately, this will initiate a global effort in the advancement of AM technology.The integration of functional materials such as ferroelectrics and piezoelectrics into metal AM parts will enable sensing applications for in-situ monitoring. Despite the difficulty of depositing such ceramics onto metal substrates, preliminary results indicate that this can be achieved using industry-standard metal-organic solution deposition methods. In this research, ferroelectric thin films will be deposited onto metal substrates and further evaluated for its structural and electrical properties. Typical materials for ferroelectrics include: lead zirconate titanate (PZT), barium titanate (BT), and strontium bismute tantalate (SBT). As for the materials of choice for the substrate, additively manufactured Inconel 718, Ti-6Al-4V, and 17-4PH stainless steel will be considered. Different ceramic/metal combinations will be assessed for the best compatibility and performance. This award under the East Asia and Pacific Summer Institutes program supports summer research by a U.S. graduate student and is jointly funded by NSF and the National Research Foundation of Korea.