|About this Abstract
|Materials Science & Technology 2020
|Additive Manufacturing Modeling and Simulation: AM Materials, Processes, and Mechanics
|Fabrication of Ceramic Core for Single Crystal Casting of Gas Turbine Blade
|Hye-Yeong Park, Eun-Hee Kim, SeungCheol Yang, Hyun-Hee Choi, Jing Zhang, Yeon-Gil Jung
|On-Site Speaker (Planned)
A ceramic core employed in a single-crystal casting process should endure for a long time at casting temperatures above 1500 ℃. In this work, an inorganic binder was applied to fabricate cores with sufficient strength and complete elution characteristics to withstand casting temperatures. The ceramic powder was coated with a silica precursor, and then dried at 80 ℃ for 1 h. The dried powder was mixed with wax and injection-molded. The injected core was heat-treated at 1200 and 1500 ℃ for 1 h. The additional heat treatment at 1550 ℃ for 3 h. The inorganic binder-coated core with a superior firing strength had no cracks or surface defects after the heat treatment, compared with the core without the inorganic binder. In addition, the turbine blade was well-cast as a single crystal and the internal core was completely eluted.