【摘要】 本文研究了不同碱类和搅拌速度对生成的Fe3O4磁性胶体微粒形貌和磁性能的影响，证明按NaOH、NH4OH、NH4HCO3、Na2CO3的次序，饱和磁化强度依次降低；而随转速加快，矫顽力增加．上述研究结果为工业制备Fe3O4磁性胶体微粒提供了依据．更多还原

【Abstract】 The present paper describes the effects of different type of base and agitation velocity upon the morphology and magnetic properties of the magnetic colloidal particles.Research results show that the σs values decreases in the order of the bases used: NaoH,NH4OH, NH4HCO3 and Na2CO3 and Hc increases with agitation velocity.These results offer useful information for the manufacture of magnetic Fe3O4 colloidal particles.更多还原