| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Additive Manufacturing Modeling and Simulation: AM Materials, Processes, and Mechanics
|
| Presentation Title |
Strength Improvement of The Ceramic Core by Applying Dual Polymers In 3D Printing Process |
| Author(s) |
Hyunhee Choi, Bong-Gu Kim, Hye-Yeong Park, Junseong Kim, SeungCheol Yang, Yeon-Gil Jung, Jing Zhang |
| On-Site Speaker (Planned) |
Hyunhee Choi |
| Abstract Scope |
In this study, new organic-inorganic binder conversion process, which can be applied in 3D printing, was introduced for preparing the ceramic core with improved mechanical strength using two polymers with different chemical properties, and inorganic binder. Green body was fabricated with a 3D printer and ceramic slurry prepared by mixing the starting powder and two polymers (non-aqueous and aqueous). The green body was immersed in water to remove the aqueous polymer, leaving space for penetrating an inorganic binder in the green body. After removing the aqueous polymer, the sample was immersed in the inorganic binder solution composed of TEOS and NaOMe, and then dried at 80℃. The prepared sample was heat-treated at 1000℃ for converting the inorganic binder to glass. The application of the dual polymer increased the penetrating amount of the inorganic binder in the green body, and finally the strength of the ceramic core increased after the heat-treatment. |