【摘要】 本文采用激光气相法,以150W CW CO₂激光器为光源、Fe（CO）₅作为主原料,并加入 SF₆敏化剂,成功地制备出了 Fe₂O₃超微粒子.实验结果表明,Fe₂O₃超微粒子具有颗粒细小、粒度体积分布窄、分散性好等优点,粒径范围为2～10nm,主要晶型为γ-Fe₂O₃.激光气相法制备 Fe₂O₃超微粒子,产率较高,是一种可行的方法,具有工业应用前景更多还原

【Abstract】 Fe₂O₃ ultrafine particles（UFP）were synthesized by laser induced vapor-phase reactionmethod,with a 150W CW CO₂ laser as light source and Fe（CO）₅ as main raw-material.Pho-tosensitizer of SF₆ was added to the reaction system.TEM,IR,XRD and electron diffractionpatterns examinations were used to describe the characteristic of the sample.The experimentalresults showed that the spherical ultrafine Fe₂O₃ products have diameters of 2～10 nm,withgood dispersity and uniformity.The main crystalline state of sample is γ-Fe₂O₃.This studyexpects ultrafine γ-Fe₂O₃ to have a good prospect in industrial applications.更多还原