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磁性流体又称磁流体。它是一种软磁性的胶体溶液,在强磁场的作用下能够沿磁场方向取向。磁性流体由三种主要成分组成:(1)固态磁性微粒,如Fe_3O_4、r-Fe_2O_3、Fe、Co、Ni等,直径小于1.5×10~(-8)米(150埃);(2)包覆这些微粒并且阻止其相互聚集而产生凝聚的表面活性剂;(3)使这些微粒悬浮的载体,又称溶媒,如水、碳氢化合物、酯类、全氟碳化合物、聚苯醚等。载体与表面活
Magnetic fluid, also known as magnetic fluid. It is a soft magnetic colloidal solution, in the strong magnetic field can be along the magnetic field orientation. The magnetic fluid consists of three major components: (1) solid magnetic particles, such as Fe 3 O 4, r Fe 2 O 3, Fe, Co, Ni and the like, having a diameter of less than 1.5 × 10 -8 m Coating these particles and preventing them from aggregating to form cohesive surfactants; (3) carriers that suspend these particles, also known as vehicles, such as water, hydrocarbons, esters, perfluorocarbons, polyphenylene oxides and the like. Carrier and surface activity