共沉淀法制备尖晶石型镍铁复合氧化物粉体的工艺与性能  

The technology and properties of nickel ferrate spinel complex oxide powder prepared by co-deposition from solution

作　　者：刘宜汉[1] 魏巍[1] 姜亚男[1] 赵明[1] 李晶[1] 

机构地区：[1]东北大学材料与冶金学院,沈阳110819

出　　处：《材料与冶金学报》2011年第4期253-256,272,共5页Journal of Materials and Metallurgy

基　　金：国家高科技研究发展计划(863)(2009AA03Z502)

摘　　要：对于溶液共沉淀法制备镍铁尖晶石前躯粉体的工艺进行了探索研究.以Fe(NO3)3和Ni(NO3)2的混合溶液为反应物,以碳酸钠为沉淀剂进行共沉淀反应;通过正交试验确定了在共沉淀过程中影响共沉淀粒度诸因素的主次顺序依次为:反应温度、搅拌速度、沉淀剂浓度、金属离子浓度;并通过反应温度和沉淀剂浓度对产率的影响试验,最终得到共沉淀反应沉淀的最佳条件.对于所制得的镍铁尖晶石陶瓷粉体检测结果表明:溶液共沉淀法得到的镍铁尖晶石前躯体粉末具有纯度高、粒度细的特点,并且制备出的镍铁尖晶石陶瓷材料的强度显著提高.The technology of preparing nickel ferrate complex powder by co - deposition method from solution containing Ni2 ＋ and Fe3 ＋ has been studied. The nickel nitrate and iron nitrate is .used as the source of ion, and the sodium carbonate is used as precipitator to take the act of co - deposition. The remarkable factor which effecting the granularity distribution of the co - deposition products is obtained for the by means of orthogonal experiment ; and the order is the reaction temperature, stirring intensity, the precipitator density, the Ni2＋ and the Fe3 ＋ density. The optimal parameter is got according to the effect of the reaction temperature and reactant density on the output of the oxide powder. The results shows that purer and finer nickel ferrate spinel predecessor powder can be gained by the co - deposition, and thus a higher quality nickel ferrate spinel ceramics can obtained this method.

关 键 词：镍铁尖晶石 复合氧化物 陶瓷粉体 液相共沉淀 

分 类 号：TB333[一般工业技术—材料科学与工程]