添加剂对二氧化硅包裹碳化硅材料性能的影响  

Effects of Additives on Properties of Silica Bonded Silicon-carbide

作　　者：谈国强[1] 李建波[2] 

机构地区：[1]陕西科技大学材料科学与工程学院,咸阳71208 [2]中铁一局集团公司一公司,渭南714000

出　　处：《佛山陶瓷》2004年第3期6-9,共4页Foshan Ceramics

摘　　要：本文利用碳化硅颗粒表面氧化生成的二氧化硅将碳化硅颗粒包裹起来的方法,制备了二氧化硅包裹碳化硅材料;借助XRD、SEM分析了加入不同添加剂对材料抗折强度及抗热震性等性能的影响。结果表明添加硅粉能提高二氧化硅包裹碳化硅材料的抗弯强度和抗热震性,而Cu粉和V2O5对材料的性能影响不大。This paper studies the methods of silica oxidiz ing formation silicon-carbide particles surface bindi ng with silicon-carbide particle and prepares the mater ial of silica bonded silicon-carbide. Through the analys is of X-ray Diffraction (XRD) and Scanning Electron Micro scope (SEM),adding different additives affects the proper ties of the material of bending strength and thermal shock-resistance.The results indicate that the added si licon powder can increase the bending strength and thermal shock resistance of the material of silica bonded s ilicon-carbide while adding copper powder and V 2 O 5 have almost no effects on the properties of the ma terial.

关 键 词：二氧化硅 碳化硅 添加剂 抗热震性 XRD SEM 抗折强度 耐火材料 陶瓷窑具 

分 类 号：TQ175[化学工程—硅酸盐工业]