| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing Modeling and Simulation: Microstructure, Mechanics, and Process
|
| Presentation Title |
Mechanical Properties of Ceramic Core with SiO2-Na2O-Al2O3 Ternary Binder System |
| Author(s) |
Hyunhee Choi, Bong-Gu Kim, Eun-Hee Kim, Junseong Kim, Seong-Hwa Jeong, Seung-Cheol Yang, Yeon-Gil Jung |
| On-Site Speaker (Planned) |
Hyunhee Choi |
| Abstract Scope |
The organic-inorganic binder conversion process was introduced to improve the strength of ceramic core in a casting process. As of now, the binary inorganic binder system of Na2O-SiO2 has been applied in the conversion process. However, there are limitations in the thickness and shape of cast products, owing to the working temperature of the binary binder system. Therefore, in this study, a ternary inorganic binder system composed of SiO2-Na2O-Al2O3 was introduced in the conversion process. As the amount of Al precursor increased in the ternary binder system, mechanical properties, such as Young's modulus, fracture toughness, and hardness, were improved, which showed similar values and trends to those calculated through molecular dynamics. Finally, by applying the ternary binder system to the fabrication process of the core, the strength of the core was improved and the casting possibility was confirmed in high temperatures. |