添加剂对 ZrO_2(Y_2O_3)粉末比表面积的影响  

EFFECTS OF ADDITIVES ON THE SPECIFIC SURFACE AREA OF ZrO 2(Y 2O 3) POWDERS

作　　者：尹邦跃[1] 王零森[1] 张金生[1] 樊毅[1] 陶颖[1] 

机构地区：[1]中南工业大学粉末冶金国家重点实验室

出　　处：《中南工业大学学报》1998年第6期567-569,共3页Journal of Central South University of Technology(Natural Science)

基　　金：粉末冶金国家重点实验室资助项目

摘　　要：采用ＥＤＴＡ（乙二胺四乙酸）溶胶－凝胶法制备了ＺｒＯ２－８％Ｙ２Ｏ３（摩尔分数）纳米粉末，并研究了２种添加剂对粉末比表面积的影响．结果表明，促进凝胶稳定形成并增强氧化气氛的添加剂，可以增加粉末的均匀分散性，从而提高粉末的比表面积．经６００℃／２ｈ煅烧后，粉末的比表面积为１１０ｍ２／ｇ，平均粒径约１０ｎｍ，然而仍有微量Ｃｌ残余，因此，最佳制粉工艺还有待细致的研究．Nanometer ZrO 2 8% Y 2O 3(mole fraction) powders were prepared by the EDTA (ethylenediaminetetraacetic acid) sol gel method, and the effects of additives on the specific surface area of the powders were studied. The results showed that the specific surface area was increased by the additives promoting the formation of gel and enhancing “ in situ ” oxidizing environment as a result of improvement of homogeneity and dispersion. The powders calcined at 600 ℃ for 2 h, with the specific surface area of 110 m 2/g and average particle size of 10 nm, had trace chlorine residual, so further and more careful studies of the best preparation processing are needed.

关 键 词：溶胶-凝胶法 纳米粉末 添加剂 二氧化锆 Y2O3 

分 类 号：TF123.7[冶金工程—粉末冶金]