The Study Of Nanostructure Of Porous Ceramics Based On Nano-CT Technology

The study of porous structure of ceramic is of significance because it has a great impact on the performance of ceramic. However, the existing characterization techniques are not able to observe the three-dimensional (3D) structure of ceramic. In this paper, Nano-CT imaging technique were used to study the 3D structure of ceramic hollow fiber membrane which obtained by phase inversion. The results showed the shape, direction, size distribution, as well as the 3D map of the pores in side the ceramic. The pore size is about 0.4-1.5μm, and the porosity is 38.31%. These data can be used to improve their manufacturing processes and optimize the structure parameters, which make it widely used in the chemical, energy, environmental protection and other fields.The main works in the thesis are described as the following:Part 1: Using Nano-CT technique for two-dimensional images of hollow ceramic materials research, obtained information on the surface of hollow fiber membranePart 2:In this work, Nano-CT imaging technique was used to study 3D structure of a ceramic fiber tube prepared by a phase inversion technology. The results showed the shape, direction, size distribution, and 3D map of the pores inside the ceramic wall. The pore size is 0.4–1.5μm, with a porosity of 38.31%. The data can be used to improve their preparation processes and optimize the structure parameters, for applications in chemical, energy, environmental protection and other fields.Part 2 :Through repeated experiments and sample pre-treatment, and constantly improve the ceramic hollow fiber membrane sample preparation methods, in order to obtain better experimental data.