## 1 Introduction
To address this research demand, this study systematically reviews parameter optimization affecting SiC green body formation (e.g., jetting conditions, powder characteristics, and binder properties), presents an overview of post-processing techniques (e.g., liquid silicon infiltration and chemical vapor infiltration), and outlines strategies for post-processing optimization in the context of SiC component fabrication via BJ 3D printing. This work aims to provide researchers and engineers with a systematic framework for better understanding the behavior of SiC powder during the BJ 3D printing process and identifying the key influencing factors and major challenges in improving the quality of the final printed components. In the second section, we will present the manufacturing process flow of BJ 3D printing technology for SiC component fabrication, with a focused discussion on critical pre-printing parameters and equipment selection criteria (including binder type, powder particle size, printhead model, and printer model). Finally, by analyzing the key quality evaluation parameters for SiC BJ 3D printing, this section identifies the core aspects requiring prioritized attention to enhance printing quality. The third section, based on a comprehensive literature review, first examines solution strategies and corresponding parameter optimization approaches for issues affecting the quality of SiC green parts, including nozzle clogging, suboptimal powder bed quality, and stair-stepping effects. The second subsection discusses the current state of densification processes in mainstream post-processing techniques, along with their improvement strategies. Finally, special attention is given to advanced quality inspection and characterization techniques currently employed in BJ 3D printing. The fourth section will focus on successful industrial applications of SiC powder BJ 3D printing technology across various sectors, including the aerospace, automotive, chemical, and electronics industries. Through comparative analysis of the technical requirements and implementation paths in different application scenarios, we aim to highlight the feasibility and advantages of this technology in practical production. Additionally, we will explore the current technical and economic challenges, especially when compared with traditional  
Figure 3: SiC green parts featuring thin walls and fine holes, printed using the carbon black binder [31]. manufacturing methods, and discuss how to achieve a balance between high performance and cost-efficiency to promote adoption of this technology in large-scale production. The fifth and sixth sections explore the future development directions of BJ 3D printing technology in SiC ceramic manufacturing and summarize the main findings and insights of this paper. With the continuous advancement of 3D printing technologies, controlling the formation quality of SiC powder will become a key focus for future research in this field. We will also examine the potential of new materials, novel processes, and interdisciplinary research to drive the development of this technology and identify possible future research priorities and application trends. Through these discussions, this paper aims to provide theoretical foundations and practical guidance for the advancement of SiC powder 3D printing technology, promoting its broader application in industrial production.