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.
出处
《功能材料与器件学报》
CAS
CSCD
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)
