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Porous Si 3 N 4 ceramic with a porosity higher than 70% is fabricated by a technique combining three-dimensional printing and pressureless sintering. Using chemical vapor infiltration (CVI) of Si 3 N 4 , the mechanical properties of the porous Si 3 N 4 ceramic are clearly improved by increases in the connection strength among β-Si 3 N 4 ...
The mechanical and electromagnetic (EM) properties of Si 3 N 4 ceramic were improved by infiltrating SiC into porous Si 3 N 4 ceramic by chemical vapor infiltration (CVI). After CVI of SiC, the Si 3 N 4 –SiC ceramic possesses improved mechanical properties, high permittivity and dielectric loss, and excellent EM shielding effectiveness and EM absorbing...
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