Forming and sintering of boron carbide ceramics
Release time：2021/01/19 Author：
Meiqi
Boron carbide ceramics can be used in a variety of molding in order to obtain the density of B4C, generally USES the hot pressing sintering process for making hot pressing sintered B4C can reach 98% of the theoretical density, the preparation in vacuum hot-pressing furnace or conventional hot pressing furnace, hot-pressing temperature is 2100, pressure is 80 ~ 100 mpa, heat preservation for a few minutes, the cooling need to maintain pressure due to thermal shock resistance of B4C is poorer, so cool slowly hot-pressing temperature is unfavorable and exorbitant, can appear to 2150 B4C - C eutectic liquid phase, but the temperature is too low, the product density is lowBoron carbide ceramics with high density and hardness can be obtained by using B4C ultrafine powder.
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