CAJ | 학술논문

以钢铁厂副产品铁鳞为主要原料，采用传统陶瓷合成方法，制备了永磁锶铁氧体粉体。研究了锶铁摩尔比（SrO∶nFe2O3）和焙烧温度对铁氧体粉体显微结构和磁性能的影响。结果发现，锶铁氧体(SrO·nFe2O3)中n值变小，晶胞a轴变短，c轴变长，晶胞体积变小；粉体的矫顽力从204kA/m增加到264kA/m，剩余磁化强度略有降低。焙烧温度增高使锶铁氧体晶粒变大，当温度达到1250℃时，晶粒尺寸增大到1.5μm，矫顽力Hcj则由271kA/m急剧降低到125kA/m，剩余磁化强度则由37.5 A·m2/kg增加到39.0 A·m2/kg。
이강철엄부산품철린위주요원료，채용전통도자합성방법，제비료영자송철양체분체。연구료송철마이비（SrO∶nFe2O3）화배소온도대철양체분체현미결구화자성능적영향。결과발현，송철양체(SrO·nFe2O3)중n치변소，정포a축변단，c축변장，정포체적변소；분체적교완력종204kA/m증가도264kA/m，잉여자화강도략유강저。배소온도증고사송철양체정립변대，당온도체도1250℃시，정립척촌증대도1.5μm，교완력Hcj칙유271kA/m급극강저도125kA/m，잉여자화강도칙유37.5 A·m2/kg증가도39.0 A·m2/kg。
Using by-product of Fe2O3 in iron and steel industry as main raw materials, SrFe12O19 ferrite powder has been prepared using traditional ceramic method. The influence of mol ratio n(Fe2O3:SrO) and calcining temperature on its microstructure and magnetic properties have been investigated. The result shows that with decrease of n value in Sr-ferrite, crystal parameter of a decreases and c axis increases. The crystal volume decreases correspondingly. At the same time, the crystal grain size of 1.0μm(n=5.6) could enhance the intrinsic coercivity(Hcj) from 204kA/m to 264kA/m while the remnant magnetization keeps slight decrease. When the calcining temperature increases to 1250℃,the grain size of crystal increases to 1.5μm and the corresponding Hcj decreases from 271kA/m to 125kA/m drastically. The remnant magnetization increases from 37.5emu/g to 39.0emu/g.