|About this Abstract
|MS&T21: Materials Science & Technology
|Additive Manufacturing of Ceramic-based Materials: Process Development, Materials, Process Optimization and Applications
|3D Printing of Nd:YAG Laser Ceramics through Lithography-based Light Projection
|Guangran Zhang, Yiquan Wu
|On-Site Speaker (Planned)
Y3Al5O12 (YAG) has the major applications including laser gain media, LED and displays, scintillators, etc. For developing a complex geometry of transparent ceramics, it would be very challenging for conventional shaping methods to form required structures by powder pressing or slurry mold casting. In this presentation we report a digital light projection (DLP) printing method to fabricate three-dimensional (3D) transparent Nd:YAG ceramics. Commercial Lithoz CeraFab 8500 3D ceramic printer was used to process ceramics green body with resolution up to tens of micrometers. Followed by thermal treatment, 3D printed ceramic green body could be sintered to transparent ceramics without any crack or bubbling issues. Fabricated Nd: YAG laser ceramics exhibited a relative density of 99.9 % and achieved an in-line transmittance of 80 % in the visible wavelength. This work demonstrates general feasibility and potential commercialization of lithography-based DLP for printing laser-grade transparent ceramics with customized 3D structures.