添加MoO_3对MnZn铁氧体机械与磁性能的影响

Effect of MoO_3 on the Mechanical and Magnetic Properties of Manganese-Zinc Ferrite

用氧化物陶瓷工艺制备了添加MoO3的MnZn铁氧体。用扫描电子显微镜观察样品的微观形貌,用X射线衍射仪测量晶格常数,计算了平均晶粒尺寸和气孔率。测试了样品的密度、抗弯强度、维氏硬度以及磁性能。结果表明,MnZn铁氧体的抗弯强度和维氏硬度主要受气孔率的影响,添加适量的MoO3可促进晶粒生长,同时降低气孔率,进而改善材料的微观形貌,提高其机械性能和磁性能。

Manganese-zinc ferrite with MoO3 additive was prepared by oxide ceramic process. The samples＇ micrograph was characterized by scanning electron microscopy, and the lattice constant was measured by X-ray diffraction. The average grain size and porosity were calculated. The density, bending strength, Vickers hardness and magnetic properties of the samples were measured. The results showed that the main effect on bending strength and Vickers hardness is the porosity of manganese-zinc ferrite. Adding appropriate amount of MoO3 can promote grain growth, reduce porosity, and resultantly improve the mechanical and magnetic properties of manganese-zinc ferrite.