掺杂PF对干法Si3N4制备颗粒强度的影响  

Effect of Adding PF on the Intensity of Si3N4 Particles Prepared by Dry Method

作　　者：郑琦 曾旭 ZHENG Qi;ZENG Xu(School of Mechanical and Electronic Engineering,Jingdezhen Ceramic Institute,Jingdezhen 333403,Jiangxi,China)

机构地区：[1]景德镇陶瓷大学机械电子工程学院,江西景德镇333403

出　　处：《中国陶瓷工业》2020年第3期20-23,共4页China Ceramic Industry

摘　　要：为制备高强度的Si3N4颗粒,在干法制备Si3N4粉末中掺入PF溶液,根据造粒机的造粒机制对Si3N4粉末进行造粒。利用扫描电镜对制备成型的Si3N4颗粒进行微观表征,观测其球形度、凝实程度,自动颗粒强度检测仪对颗粒进行强度测试,分析掺入PF不同含量时颗粒强度变化,总结得出掺入PF溶液对Si3N4颗粒强度的影响。试验表明:当掺入PF含量为3%时,制备成型的Si3N4颗粒较多且颗粒球形度较高,测得此时颗粒强度为1.54 N为最优值。In order to prepare Si3N4 particles with high strength,the dry preparation of Si3N4 powder was mixed with PF solution,and Si3N4 powder was granulated according to the granulating mechanism of the granulator.The prepared Si3N4 particles were characterized by scanning electron microscope to observe their sphericity and the degree of coagulation.The strength of the particles was tested by an automatic particle intensity detector to analyze the changes of particle strength when PF was added,and the influence of PF solution on the strength of Si3N4 particles was summarized.The results showed that when PF content was 3%,there were more Si3N4 particles with higher sphericity,and the particle strength is 1.54 N which was the optimal value.

关 键 词：PF溶液 干法造粒 Si3N4颗粒 强度 

分 类 号：TQ174.75[化学工程—陶瓷工业]