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

增材制造（AM），也称为3D打印，一直是汽车和航空航天行业的研究重点。金属增材制造的优势在于其能够生产高效和复杂的零件。然而，AM的主要缺点是缺乏常规方法提供的再现性和机械完整性。在本项目中，将研究在金属AM部件中嵌入传感器以监测机械性能变化的可行性。这项研究将与韩国机械与材料研究所（KIMM）的粉末床熔融金属打印组的项目经理和激光材料加工方面的著名专家Hyonkee Sohn博士合作进行。该合作伙伴关系将提供由KIMM设计的激光材料加工设备和原始金属3D打印机。最终，这将启动全球AM技术的进步。将铁电体和压电体等功能材料集成到金属AM部件中，将使传感应用能够进行现场监测。尽管在金属基底上沉积这种陶瓷很困难，但初步结果表明，这可以使用工业标准的金属有机溶液沉积方法来实现。在本研究中，将铁电薄膜沉积在金属基底上，并进一步评估其结构和电学性质。用于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）。至于基底的材料选择，将考虑增材制造的Inconel 718、Ti-6Al-4V和17-4PH不锈钢。将评估不同陶瓷/金属组合的最佳兼容性和性能。东亚和太平洋夏季研究所计划下的这个奖项支持美国研究生的夏季研究，由NSF和韩国国家研究基金会共同资助。

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.