摘要
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.
出处
《磁性材料及器件》
CSCD
北大核心
2009年第6期44-47,共4页
Journal of Magnetic Materials and Devices
基金
教育部科学技术研究重点资助项目(106138)
四川省科技攻关计划资助项目(2006202-010-6)
关键词
MNZN铁氧体
MoO3添加
机械性能
磁性能
manganese-zinc ferrite
MoO3 addition
mechanical property
magnetic property