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A novel kind of 3D interconnected porous carbon‐bonded B4C preform with flexural strength of about 20MPa is fabricated by gel‐casting method. As the control, the B4C/C preforms via molding‐produced method are fabricated. The B4C/C preforms own the same carbon content and almost the same porosity with different molding method. Compared with the conventional compression molding‐produced B4C/C preform,...
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