Woodruff School of Mechanical Engineering



Ceramic Stereolithography applied to investment casting molds and Li-ion batteries


Dr. Chang-Jun Bae




Friday, October 28, 2016 at 3:00:00 PM


MARC Building, Room 114


Seung Woo Lee


Superalloy airfoils are produced by investment casting, which use ceramic cores and wax patterns with ceramic shell molds. As an alternative for small production runs or designs too complex for conventional cores and patterns, we use ceramic stereolithography (CerSLA). CerSLA is an extension of the standard on the nature and properties of the photopolymerizable suspension for refractory silica powders, the build parameters (layer thickness, laser write style, etc), and the processing steps after CerSLA fabrication (draining, binder removal, sintering). Examples of complex ICCM shapes are presented, with data on accuracy and reproducibility. Progress with superalloy casting in the ICCM and electrode fabrication of Li-ion batteries will be briefly discussed.


Chang-Jun Bae is a Senior Research Scientist, at the Korea Institute of Materials Science (KIMS), which is a government funded research institute. Prior to joining KIMS, Dr. Bae was a research scientist at Palo Alto Research Center (PARC), located in Silicon Valley, and MIT, developing new ways of manipulating the properties of ceramic active materials. His previous research achievements of additive manufacturing (AM) and Li-ion battery were featured on several media: Economist, MIT Technology Review, Ceramic Tech Today. Dr. Bae earned his Ph.D. in Material Science Engineering from University of Michigan, M.Eng from Seoul National University, and B.Eng (Hons) from Sungkyunkwan University, Korea. He is a co-author on 18 journal publications and a co-inventor on 11 issued and pending patent application for Additive Manufacturing and Li-ion battery.