Development of Micro-powder Injection Molding Process for Manufacturing a Piezoelectric Structure with High-aspect-ratio

摘要：

　　In this paper,micro-powder injection molding(μ-PIM)process for manufacturing a piezoelectric structure with high-aspect-ratio was developed and optimized.For injection molding,micro-sized metal mold insert was prepared along with the optimized LIGA process.For manufacturing a homogeneous feedstock,the powder was mixed with the selected binder system at 3 times using twin extruder mixer.To analyze the rheological behavior in real injection condition,capillary test was performed with respect to various temperature and shear rate.With the prepared feedstock,injection molding was conducted into micro-sized cavity.After ejected from the metal mold insert,thermogravimetric analyzer experiment was conducted at different heating rate.Based the on the experiment,thermal debinding conditions were optimized.After sintering process,a micro-sized piezoelectric structure with high-aspect-ratio was successfully fabricated without any defects.

关键词： Binder system Mold insert Powder injection molding Rheological behavior Thermal decomposition

作者: Park Jae Man Han Jun Sae Gal Chang Woo Kim Jong Hyun Bandiwaderkar B. Kate Kunal H. Atre Sundar V. Kim Youngmoo Park Seong Jin

作者单位: Department of Mechanical Engineering,Pohang University of Science and Technology(POSTECH),Pohang 376 Pohang Accelerator Laboratory(PAL),Pohang University of Science and Technology(POSTECH),Pohang 37673 Department of Materials Science and Engineering,University of Louisville,Louisville 40208,USA Agency for Defense Development,P.O.Box 35,Yuseong-gu 34186,Daejeon,Republic of Korea

会议类型: 国际会议

会议名称: 2018世界粉末冶金大会

会议地点: 北京

会议语种:英文

页码: 580-585

在线出版日期: 2018-09-16（万方平台首次上网日期，不代表论文的发表时间）