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Slip casting process combined with reaction bonded silicon nitride (RBSN) was used to prepare porous Si 3 N 4 ceramic with near-net and complex shape. A butyl stearate (BS) coated process was introduced to restrain the hydrolysis of Si, and ammonium polyacrylate (NH 4 PAA) was used to enhance the dispersion of coated Si. The measured oxygen content showed that the hydrolysis...
There were interconnected small lamellar pores, big spherical pores and ceramic walls in the hydroxyapatite (HAP) ceramics fabricated by a freeze casting/pore-former method. As keeping the content of polymethyl methacrylate (PMMA) constant and decreasing the size of PMMA, the size of spherical pores and length of ceramic wall both decreased, and the compressive strength increased. As keeping the size...
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