不同含量聚乙二醇对碳化硅喷雾造粒的影响  

Effect of Polyethylene Glycol on the Silicon Carbide Spraying Processing

作　　者：陈健[1] 黄政仁[1] 刘学建[1] 

机构地区：[1]中国科学院上海硅酸盐研究所结构陶瓷工程研究中心

出　　处：《材料科学与工程学报》2008年第4期497-500,共4页Journal of Materials Science and Engineering

基　　金：国家重点基础研究规划(863项目)资助项目(2006AA03Z539)

摘　　要：通过研究碳化硅及其烧结助剂碳化硼、纳米碳黑在水溶液中的共分散性,制得了分散性良好的混合浆料,研究结果发现碳化硅及其烧结助剂碳化硼、纳米碳黑在碱性条件下可以实现共分散。同时聚乙二醇(PEG)作为浆料的分散剂和粉体的粘结剂,PEG含量对碳化硅喷雾造粒有重要的影响,结果显示随着PEG含量的增加,喷雾造粒的球状颗粒形貌趋于规整,粉体的流动性增加。The co-dispersion of silicon carbide with the sintering aids nano-C and B4 C in alkaline aqueous solution was studied and the mixed slurries were prepared as well. Silicon carbide can be well dispersed with the sintering aids nano-C and B,C in alkaline aqueous solution. The polyethylene glycol was used as the dispersant in slurries and the binder in spraying and it had obvious effect on silicon carbide spraying processing. The morphology of sphere particles tended to uniform and the fluidity of spraying powder elevated with the increase of PEG contents.

关 键 词：聚乙二醇(PEG) 碳化硅 喷雾造粒 流动性 

分 类 号：TF123.31[冶金工程—粉末冶金] TQ175.61[冶金工程—冶金物理化学]