自蔓延法制备ZrO_2-Y_2O_3纳米粒子的影响因素  

Influence of di-ester Phosphate (PE) and the citric acid on the ZrO_2- Y_2O_3 (YSZ) nanoparticles synthesized by auto- ignited combustion

作　　者：杨晶[1] 连建设[1] 董奇志[1] 关庆丰[1] 陈积伟[1] 郭作兴[1] 王红颖[1] 

机构地区：[1]吉林大学材料科学与工程学院

出　　处：《功能材料与器件学报》2003年第3期272-276,共5页Journal of Functional Materials and Devices

基　　金：国家自然科学基金资助项目(59493300);教育部博士点基金资助项目(9800462)

摘　　要：采用自蔓延法制备ZrO2-Y2O3(YSZ)纳米粒子。研究了反应中柠檬酸与硝酸盐比例(c/n)对反应产物的影响以及对纳米晶粒尺寸的影响,并且探讨了分散剂的作用机理,在制备过程中添加分散剂磷酸酯(PE)对YSZ纳米颗粒尺寸的影响及其作用机制。结果表明,反应中柠檬酸与硝酸盐的最佳比例为0.56,此时可获得的晶粒尺寸为12nm;分散剂PE加入量为ZrOCl2质量的2%时,分散效果最好,获得的纳米颗粒团聚最小(30-70nm)。Nano- crystalline yttria stabilized zirconia (YSZ) particles were synthesized by auto- ignited combustion. The influence of citrate to nitrate(c/n) molar ratio on the reaction products and the nano- crystalline grain size were investigated. Di- ester phosphate (PE) as a dispersant was added to the nitrate solution. The influence of PE dispersant in the precursor solutions on the resulted particles and its reaction mechanism were also investigated. The best molar fuel- oxidant molar ratio is 0.56 in the experiment and the nanocrystalline grains sized of 12nm are obtained. PE with the weight of 2wt% ZrOCl2 is proved to be the best concentration from which typical nanoparticles sized of 30- 70nm are obtained.

关 键 词：YSZ 纳米粒子 自蔓延高温合成 制备 纳米晶粒 纳米颗粒 分散剂 磷酸酯 柠檬酸 硝酸盐 

分 类 号：TF123.72[冶金工程—粉末冶金]