以聚碳硅烷为粘接剂,SiC粉末为骨料,经模压成型、惰性气氛保护下于1000 ℃裂解低温制得SiC多孔陶瓷.考察了聚碳硅烷含量、SiC粉末粒径、模压压力、造孔剂碳含量等参数对多孔陶瓷孔隙率、弯曲强度、孔结构的影响.结果表明,随着聚碳硅烷含量和模压压力的增加,SiC多孔陶瓷的开口孔隙率下降,弯曲强度升高;随着造孔剂碳含量的增加,多孔陶瓷的孔隙率由53.05%升高至58.6%,抗弯曲强度迅速由7.88 MPa下降到1.08 MPa.随着模压压力的升高,多孔陶瓷的平均孔径下降;随着SiC粉末粒径的增加,平均孔径增大.
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