Porous α-Al2O3 ceramics prepared by gelcasting

Extrusion method using nylon 66 fibers for the preparation of porous alumina ceramics with oriented pores

“…ceramic, 1,2 it is necessary to control the size, distribution and connectivity of the pores to improve the permeability. Since the size and distribution of the pores formed in ceramics is usually random, very high porosity is necessary to achieve high permeability.…”

Fabricating Porous Ceramics

“…The resulting products, with porosity of 40%-50% and pore sizes of 2-5 μm, were gel-casted by using a-Al 2 O 3 as the raw material and carbon powders as the pore forming agent [86].…”

Reactive synthesis of porous Cu3Si compound

“…To obtain porous materials, the addition of pore-forming substance and the replication of porous structure of organic preform are primary ways [8,9], but here both of them were not used, avoiding the contamination from the additions. The Cu/Si reaction at elevated temperature was used to generate Cu 3 Si compound as well as to form porous microstructure.…”