Novel porous Si3N4 ceramics prepared by aqueous gelcasting using Si3N4 poly-hollow microspheres as pore-forming agent

Robocasting of silicon nitride with controllable shape and architecture for biomedical applications

“…Conventional forming methods such as injection molding, 12,13 slip casting, 14,15 and gelcasting 16,17 have been used for near net shape fabrication of Si 3 N 4 ceramics with simple and complex shapes. However, they are limited in their ability to produce architectures with a controlled spatial distribution of porosity and the requisite pore size to facilitate integration of the implants with host bone.…”

Effects of pore shape and porosity on the dielectric constant of porous β-SiAlON ceramics

“…Porous silicon nitride-based materials or SiAlON ceramics are recognized as a promising candidate for a wide range of applications that involve high temperature and corrosive environments, such as molten-metal filtrations, sensors, catalyst supports, separation membranes, light weight structural components and radome, due to their good thermal shock resistance, high strain tolerance, high strength and corrosion resistance [1][2][3][4].…”

Pore morphology designs of porous Si3N4-based ceramics using Si3N4 and Al2O3 poly-hollow microspheres as pore-forming agents

“…In our previous research, porous Si 3 N 4 ceramics were successfully fabricated using Si 3 N 4 PHMs as pore-forming agents, and the effect of Si 3 N 4 PHMs content on the properties of the samples was investigated [13]. Other than Si 3 N 4 PHMs, Al 2 O 3 PHMs could act as sintering aids in the preparation of Si 3 N 4 ceramics.…”