Effect of Micro SiC Addition on the Microstructure and Thermal Shock Resistance of 3D Printed Mullite Contained Ceramics

Currently, mullite contained ceramics printed by DIW 3D printing cannot be used in a high temperature environment for multicycle. In the fields of environmental protection and filtration of high-temperature flue gas, 3D printed mullite contained ceramics is in widely demanded owing to the variety of structures. Thus, application of these products have been limited due to their low thermal shock resistance. In order to improve the thermal shock resistance of 3D printed mullite contained ceramics for high-temperature flue gas filter, in this work, the effect of SiC micron particles addition on the thermal shock resistance was investigated. The thermal shock behavior of 3D printed mullite ceramics was explored using a conventional water quenching technique. Furthermore, XRD and SEM were used for determining phase composition and microstructure evaluation, respectively.