Abstract: During the last decades, porous ceramics have been widely used in the fields of thermal insulation, gas filter, catalytic carrier, separation membrane, kiln furniture, biomedical substitutes, sensor materials and so on. The research on the preparation process and properties of porous ceramics shows a trend of rapid development, and a large number of innovative results were obtained. Based on the preparation process of porous ceramics, the development status and research results of five main preparation methods of porous ceramics were summarized, including partial sintering, sacrificial template, replica template, direct foaming and 3D printing. Meanwhile, the advantages and disadvantages of each preparation method and the direction of future development were also discussed, providing guidance and reference for the further development of porous ceramics.
Key words: porous ceramics, partial sintering, sacrificial template, replica template, direct foaming, 3D printing
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