【摘要】 以钢厂副产的氧化铁红作为含铁原料，采用微波辅助熔盐法制备了SrFe₁₂O₁₉铁氧体，研究了Fe/Sr摩尔比和微波煅烧温度对样品的物相组成、微观结构及磁性能的影响。采用FullProf软件对样品的XRD数据进行了精修拟合分析，利用扫描电子显微镜（SEM）观察了样品的形貌，用振动样品磁强计（VSM）对样品的磁性能进行了表征。结果表明，Fe/Sr摩尔比对样品的物相组成及样品的晶胞参数有重要影响，当Fe/Sr摩尔比为10.5时，样品获得了较好的磁性能。随着煅烧温度的增加，SrM相的厚度也随着增加，在1373.15 K下微波煅烧2 h, SrM相的厚度最大，此时样品矫顽力最大达到2.69×10⁵ A/m,饱和磁化强度为63.04 A·m²/kg,而在1273.15 K制备的样品最大磁能积最大为9.47×10³ J/m³。更多还原

【Abstract】 In this experiment, SrFe₁₂O₁₉ was prepared by microwave assisted molten salt method used iron oxide red as iron-bearing raw material which is secondary product of steel plants. The effects of Fe/Sr molar ratio and microwave calcination temperature on the phase composition, microstructure and magnetic properties of the samples were studied. The XRD data of the samples were refined and fitted by the FullProf program, the morphology of the samples was observed by scanning electron microscope（SEM）, and the magnetic properties of the samples were characterized by vibrating sample magnetometer（VSM）. The results showes that the Fe/Sr molar ratio has an important influence on the phase com-position and the cell parameters of the sample. When the Fe/Sr molar ratio is 10.5, the sample has better magnetic properties. With the increase of calcination temperature, the thickness of SrM phase also increases. The thickness of SrM phase is the largest after microwave calcination at 1373.15 K for 2 hours. At this time, the maximum coercivity force of the sample reaches 2.69×10⁵ A/m, and the saturation magnetization is 63.04 A·m²/kg. The maximum magnetic energy product of SrM prepared at 1 273.15 K is 9.47×10³ J/m³.更多还原