碳化硼陶瓷凝胶注模成型工艺研究

Study on the Gelcasting of Boron Carbide Ceramics

研究了分散剂用量、固相体积含量对碳化硼浆料粘度的影响,采用扫描电子显微镜(SEM)对素坯微观结构进行了表征。结果表明,以正辛醇为分散介质,当分散剂CH-10S用量为3%(质量分数)时,可以制得固相体积含量为55%的碳化硼浆料。素坯的抗弯强度为38MPa,且素坯中碳化硼颗粒堆积紧密,而且颗粒分散均匀。

Effect of dispersant and solid content on the viscosity of B4 C slurry was studied. The morphology the green bodies and sintered bodies were characterized by scanning electron microscopy （SEM） . The results show that B4C slurry with 55% （vol） solid can be prepared when 3% dispersant is added in the slurry. The flexural strength of green body is 38MPa and the powder of B4C in the green body is compact and homogeneous.