阴离子在形成纺锤形α-FeOOH中的作用  

Function of Anion in the Synthetic Process of Spindle-shaped α-FeOOH

作　　者：朱昊果[1] 陆轻铱[1] 曾京辉 宋宝珍[2] 曾桓兴[1] 

机构地区：[1]中国科学技术大学材料科学与工程系,合肥230026 [2]中国科学院化工冶金所,北京100080

出　　处：《无机材料学报》1998年第3期445-448,共4页Journal of Inorganic Materials

摘　　要：通过用不同碱类或混合碱分别和FeSO4反应，合成了纺锤形α－FeOOH；用TEM观察产物的形貌，结果显示：纺锤形α－FeOOH生成的轴比与［OH－］有关，［OH-］越高，形成的轴比越大，的浓度越大，短轴越长，轴比减小，越趋于椭球形.形成纺锤形粒子的本质原因可能是通过离子的链接凝并作用.Spindle-shaped α-FeOOH was prepared from FeSO4 and different alkalis or mired alhalisrespectively. The morphology of a-FeOOH was observed with TEM. The result shows that its axisratio related to [OH-], the higher concentration of [OH-], the longer axis ratio; α-FeOOH waslike the ellipsoid with caxbonic concentration increasing, because the short tals became Ionger andxis ratio smaller. The essential cause of formating spindle-shaped α-FeOOH particles was thecoagulation of CO ion bond.

关 键 词：纺锤形 磁粉 铁磁材料 磁记录材料 

分 类 号：TM271.014[一般工业技术—材料科学与工程] TQ586.1[电气工程—电工理论与新技术]