CUI Kaige 1, GAO Hongbo 1, XIE Yongmin 2, WU Guanhua 1, ZHANG Shijing 1, WANG Shupeng 3
(1. Key Laboratory of Nondestructive Testing (Ministry of Education), Nanchang Hangkong University, Nanchang 330063, Jiangxi, China; 2. Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China; 3. AECC Shenyang Liming Aero-Engine Co., Ltd., Shenyang 110043, Liaoning, China)
Abstract: YSZ ceramic powder was used as the objection this study. According to SEM result, the average particle size was 27.8 μm. 3D visualization of the ceramic powder particles and internal pores were carried out by using micro-CT technology. Geometric characteristics, sphericity and specific surface area of the powders were quantitatively analyzed. It is shown that the average particle size of the powder and the aperture of the internal pores are 20.85 μm and 4.89 μm, respectively. The average sphericities are 0.52 and 0.59, while the average specific surface areas are 0.96 μm2•μm−3 and 5.73 μm2•μm−3. It is therefore concluded that micro-CT is an ideal tool for characterizing three-dimensional morphology and internal pores of ceramic powder particles.
Key words: ceramic powder; 3D printing; micro-CT; average particle size; sphericity; specific surface area