纳米ZnO或纳米Y2O3对熔融石英陶瓷烧结性能的影响  

Effect of nano-ZnO or nano-Y_2O_3 on sintering property of fused quartz

作　　者：卜景龙[1] 陈越军[1] 于立学[1] 王志发[1] 

机构地区：[1]河北省无机非金属材料重点实验室河北联合大学材料科学与工程学院,河北唐山063009

出　　处：《耐火材料》2012年第5期334-336,共3页Refractories

基　　金：国家自然科学基金资助项目(51072046)

摘　　要：以高纯熔融石英粉为原料,分别加入相对于熔融石英粉质量1%、2%和3%的纳米ZnO或纳米Y2O3,经50 MPa压力成型后,在还原气氛中,于1 300、1 350和1 400℃保温1 h煅烧后,测定试样的显气孔率和常温抗折强度,并采用SEM分析试样的断口形貌。结果表明:引入纳米ZnO或纳米Y2O3可以明显地促进熔融石英陶瓷的烧结,纳米ZnO可大大提高熔融石英陶瓷材料的抗折强度并显著降低其显气孔率,纳米Y2O3作为熔融石英陶瓷助烧结剂的最佳加入量(w)为2%。Fused quartz ceramic was prepared using high purity fused quartz powder as starting material, separately introducing 1% ,2% and 3% （in mass） nano-ZnO or nano-Y2O3 as additive,molding at 50 MPa, firing in reducing atmosphere at 1300 ℃, 1 350 ℃ and 1400 ℃ for 1h, respectively. Apparent porosity and cold modulus of rupture were tested and fracto morphology was analyzed by SEM. The results show that adding nano-ZnO or nano-Y2O3 obviously improves sintering of fused quartz;adding nano-ZnO enhances modulus of rupture and decreases apparent porosity;the optimum dosage of nano-Y2O3 as sintering agent of fused quartz is 2%.

关 键 词：熔融石英陶瓷 烧结性能 纳米ZNO 纳米Y2O3 

分 类 号：TQ175.75[化学工程—硅酸盐工业]