新型磁性材料──Co－Fe_3O_4磁流体的研制

本文途述了化学法制备Ｃｏ－Ｆｅ＿３Ｏ＿４磁流体的试验结果。在适宜的工作条件下，只要活性剂和载液选择得当，且与磁性颗粒之间的配比合理，就可以制备出磁性强和稳定性好的Ｃｏ－Ｆｅ＿３Ｏ＿４磁流体。通过对主要操作变量参数的研究，确定了最佳工艺条件。对相同操作条件下制备的Ｃｏ－Ｆｅ＿３Ｏ＿４磁流体和Ｆｅ＿３Ｏ＿４磁流体进行了比较，结果表明：前者的饱和磁化强度远大于后者。本试验研究为研制高质量的磁流体提供了依据。

Prepare on A New Type Magnetic Material Co-Fe_3O_4 Magnetic Fluid

This paper describes the experimentalresults of the prepare on a Co-Fe_3O_4 magnetic fluidby chemistry method.Under appropriate workingconditions,if a stabilizer and carrying fluid areproperly selected, and their distributed proportionto the magnetic grains is rational,a Co-Fe_3O_4 mag-netic fluid with strong magnetism and good stabilitycan be prepared,Through the study on main operating paremeters,optimal technological conditionsare detern1ined. In addition, the Fe_3O_4 magneticnuid prepared under the sarne operating conditionsand the Fe_3O_4 magnetic fluid are compared with it.The results show the saturation magnetization ofthe latter. This research prorides a scientific basisfor the prepare of high quality magnetic fluids,