用精铁矿粉制备BaZnCoTi-W型微波吸收铁氧体材料  

Preparation of BaZnCoTi-W Type Microwave Absorbing Ferrite with Refined Iron Mine Powder

作　　者：王勇[1] 孙越胜[1] 

机构地区：[1]电子工程学院,安徽合肥230037

出　　处：《材料科学与工程学报》2012年第4期543-546,共4页Journal of Materials Science and Engineering

摘　　要：利用称重、磁性探测和XRD图谱相结合的方式,分析了精铁矿粉的氧化相变过程,发现在750℃时,精铁矿粉被氧化生成α-Fe2O3;采用氧化工艺,直接用精铁矿粉和BaCO3一次烧结制备W型钡铁氧体BaZn1-aMnaCo1+0.5xTi0.5xFe16-XO27,分别研究了Co2+Ti 4+含量(x值)和涂层厚度对磁性能的影响,结果表明:当厚度为2.1mm及x=1.25时,样品在x全波段内(8～12GHZ)吸收衰减大于10dB,吸收峰达到31dB。The phase transition of refined iron mine powder to Fez 03 was analyzed by weighting, magnetic detection and X-ray diffractometry （XRD）. It was found that refined iron mine powder was oxidized to a-Fe2O3 at 750℃. W-type barium ferrite BaZnl ,MnaCo1＋0.5xTi0. 5xFe16-xO27 was prepared with refined mine powder and BaCO3 by standard ceramic technology. It has two advantages： （1） the direct use of refined mine powder and BaCO3 ; （2） the one time sinter forging. The effects of Co2＋ Ti4＋ content and coat thickness on absorption properties were also investigated. The results show that microwave reflection loss is above 10dB in the full range of x band （8-12GHZ） for a coat thickness of 2. lmm and x = 1.25. Besides, the highest absorption peak is 31 dB.

关 键 词：精铁矿粉 平面型六角晶系W型铁氧体 x波段微波吸收 

分 类 号：TM27[一般工业技术—材料科学与工程]